asp 发表于 2002-11-4 17:04:00

[转帖]《建筑物防雷设计规范》GB50057-94 2000 年局部修订 附录5-7

[这个贴子最后由ASP在 2003/04/29 11:38am 第 3 次编辑]<br><br>&lt;html&gt;&lt;head&gt;&lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html&#59; charset=gb2312&quot;&gt;&lt;meta name=&quot;GENERATOR&quot; content=&quot;Microsoft FrontPage 4.0&quot;&gt;&lt;meta name=&quot;ProgId&quot; content=&quot;FrontPage.Editor.Document&quot;&gt;&lt;title&gt;New Page 1&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;font size=&quot;3&quot;&gt;中华人民共和国国家标准 &lt;br&gt;&lt;br&gt;《建筑物防雷设计规范》GB50057-94 &lt;br&gt;&lt;br&gt;局部修订条文 &lt;/font&gt;&lt;/p&gt;&lt;table&gt;&lt;tr&gt;&lt;td&gt;&lt;p align=&quot;center&quot;&gt;&lt;font size=&quot;3&quot;&gt;工程建设标准局部修订公告 &lt;br&gt;&lt;/font&gt;&lt;font size=&quot;2&quot;&gt;&lt;br&gt;第24号 &lt;br&gt;&lt;br&gt;国家标准《建筑物防雷设计规范》GB50057-94，由国家机械工业局设计研究院会同有关单位进行了局部修订，已经有关部门会审，现批准局部修订的条文，自2000 年10月1日起施行，原规范中相应的条文同时废止。现予公告。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;&lt;/font&gt;&lt;font size=&quot;3&quot;&gt;中华人民共和国建设部 &lt;br&gt;　2000年8月24日&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/table&gt;&lt;p align=&quot;left&quot;&gt;&lt;font size=&quot;2&quot;&gt;&lt;br&gt;　&lt;br&gt;&lt;br&gt;&lt;/font&gt;&lt;b&gt;&lt;font size=&quot;3&quot;&gt;附录五 分流系数 kC &lt;/font&gt;&lt;/b&gt;&lt;font size=&quot;2&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;1.分流系数 kC，单根引下线时应为1，两根引下线及接闪器不成闭合环的多根引下线时应为 0.66，接闪器成团合环或网状的多根引下线时应为 0.44（附图5.1）。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;　　2.当采用网格型接闪器、引下线用多根环形导体互相连接、接地体采用环形接地体，或者利用建筑物钢筋或钢构架作为防雷装置时分流系数 kc 应按附图5.2 确定。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;　　3.在接地装置相同（即采用环形接地体）的情况下，按附图5.1 和附图5.2 计算出的分流系数值不同时，可取较小的数值。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;　　[说明] &nbsp;附图5.1 适用于单层、多层建筑物和每根引下线有自己的接地体或接于环形接地体以及引下线之间（除屋顶外）在屋顶以下至地面不再互相连接。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;　　附图5.2 适用于单层到高层，在接地装置符合要求的情况下不论层数多少，当引下线（附屋顶外）在屋顶以下至地面不再互相连接时分流系数采用 kC1。在钢筋混凝土框架式结构和利用钢筋作为防雷装置的情况下，当接地装置利用整体基础或闭合条形基础或人工环形接地体（此时与周边每根柱子钢筋连接）时，附图5.2 中的 h1～hm 为对应于每层高度，n 为沿周边的柱子根数。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft51.jpg&quot; width=&quot;479&quot; height=&quot;601&quot;&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft52.jpg&quot; width=&quot;529&quot; height=&quot;565&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;--------------------------------------------------------------------------------&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;/font&gt;&lt;font size=&quot;3&quot;&gt;&lt;b&gt;附录六 &nbsp;雷电流 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/b&gt;&lt;/font&gt;&lt;font size=&quot;2&quot;&gt;&lt;br&gt;　　1.闪电中可能出现的三种雷击见附图6.1，其参量应符合附表6.1～附表6.3 的规定。雷击参数的定义应按附图6.2 确定。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;　　2.对雷电流的电荷量 Qs 和单位能量可近似按下列计算式计算。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　Qs=（1/0.7）×I×T2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;（C） &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; （附6.1）&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　W/R=（1/2）×（1/0.7）×I2×T2 &nbsp; &nbsp; &nbsp; （J/Ω） 　 （附6.2）&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;式中：I──雷电流幅值（A）；&lt;br&gt;　　　　　T2──半值时间（s）。&lt;br&gt;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft61.jpg&quot; width=&quot;427&quot; height=&quot;163&quot;&gt;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft62.jpg&quot; width=&quot;391&quot; height=&quot;479&quot;&gt;&lt;br&gt;&lt;br&gt;&lt;/font&gt;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&#59; MARGIN-TOP: 6pt&quot;&gt;&lt;b style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;首次雷击的雷电流参量&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-spacerun: yes&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;附表&lt;/span&gt;&lt;span lang=&quot;EN-US&quot;&gt;6.1&lt;O:P&gt; 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&nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;10&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;10&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 109.25pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;146&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;10&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 112.1pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;149&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;T&lt;/span&gt;&lt;sub&gt;&lt;span lang=&quot;EN-US&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;半值时间（μ&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;s&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;350&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;350&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 109.25pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;146&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;350&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 112.1pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;149&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;Q&lt;/span&gt;&lt;sub&gt;&lt;span lang=&quot;EN-US&quot;&gt;s&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;电荷量（&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;C&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;100&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;75&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 109.25pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;146&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;50&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 112.1pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;149&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;W/R&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;单位能量（&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;MJ/&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;Ω）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;10&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;5.6&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 109.25pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;146&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;2.5&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp;&lt;/tbody&gt; &nbsp;&lt;/table&gt;&lt;/div&gt;&lt;p align=&quot;left&quot;&gt;&lt;font size=&quot;2&quot;&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;注：1.因为全部电荷量 Qs 的本质部分包括在首次雷击中，故所规定的值考虑合并了所有短时间雷击的电荷量。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　 2.由于单位能量 W/R 的本质部分包括在首次雷击中，故所规定的值考虑合并了所有短时间雷击的单位能量。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;首次以后雷击的雷电流参量 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;附表6.2 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&lt;/font&gt;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&#59; MARGIN-TOP: 6pt&#59; TEXT-INDENT: 17.85pt&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;b style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;首次以后雷击的雷电流参量&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-spacerun: yes&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;附表&lt;/span&gt;&lt;span lang=&quot;EN-US&quot;&gt;6.2&lt;O:P&gt; 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mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;T&lt;/span&gt;&lt;sub&gt;&lt;span lang=&quot;EN-US&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;半值时间（μ&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;s&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; 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BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;100&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;100&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;i&gt;I&lt;/i&gt;/T&lt;/span&gt;&lt;sub&gt;&lt;span lang=&quot;EN-US&quot;&gt;1&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;平均陡度（&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;kA/&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;μ&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;s&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;200&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;150&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;100&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp;&lt;/tbody&gt; &nbsp;&lt;/table&gt;&lt;/div&gt;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&#59; TEXT-INDENT: 18pt&quot;&gt;&lt;b style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;长时间雷击的雷电流参量&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-spacerun: yes&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;span style=&quot;mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;附表&lt;/span&gt;&lt;span lang=&quot;EN-US&quot;&gt;6.3&lt;O:P&gt; &lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/b&gt;&lt;/p&gt;&lt;div align=&quot;center&quot;&gt; &nbsp;&lt;table border=&quot;1&quot; cellPadding=&quot;0&quot; cellSpacing=&quot;0&quot; style=&quot;BORDER-BOTTOM: medium none&#59; BORDER-COLLAPSE: collapse&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; mso-table-layout-alt: fixed&#59; mso-border-alt: solid windowtext .5pt&#59; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt&quot;&gt; &nbsp; &nbsp;&lt;tbody&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td rowSpan=&quot;2&quot; style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: windowtext 0.5pt solid&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;雷电流参数&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td colSpan=&quot;3&quot; style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: windowtext 0.5pt solid&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 309.9pt&#59; mso-border-left-alt: solid windowtext .5pt&quot; width=&quot;413&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;防雷建筑物类别&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;一类&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;二类&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: medium none&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;三类&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp; &nbsp;&lt;tr style=&quot;HEIGHT: 20pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;i&gt;Q&lt;/i&gt;&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;&lt;sub&gt;1&lt;/sub&gt;电荷量（&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;C&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;）&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; style=&quot;LINE-HEIGHT: 110%&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;200&lt;O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/O:P&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/span&gt;&lt;/font&gt;&lt;/p&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/td&gt; &nbsp; &nbsp; &nbsp; &nbsp;&lt;td style=&quot;BORDER-BOTTOM: windowtext 0.5pt solid&#59; BORDER-LEFT: medium none&#59; BORDER-RIGHT: windowtext 0.5pt solid&#59; BORDER-TOP: medium none&#59; HEIGHT: 20pt&#59; PADDING-BOTTOM: 0cm&#59; PADDING-LEFT: 5.4pt&#59; PADDING-RIGHT: 5.4pt&#59; PADDING-TOP: 0cm&#59; WIDTH: 103.3pt&#59; mso-border-left-alt: solid windowtext .5pt&#59; mso-border-top-alt: solid windowtext .5pt&quot; width=&quot;138&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;center&quot; 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&nbsp; &nbsp; &nbsp;&lt;/tr&gt; &nbsp; &nbsp;&lt;/tbody&gt; &nbsp;&lt;/table&gt;&lt;/div&gt;&lt;p align=&quot;left&quot;&gt;&lt;font face=&quot;宋体&quot; size=&quot;2&quot;&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;平均电流 &nbsp; &nbsp; &nbsp; &nbsp; &lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;i&gt;I &lt;/i&gt;&lt;/span&gt;&lt;span style=&quot;mso-bidi-font-size: 10.0pt&#59; mso-ascii-font-family: Times New Roman&#59; mso-hansi-font-family: Times New Roman&quot;&gt;≈&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt;&lt;i&gt;Q&lt;/i&gt;&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-style: normal&quot;&gt;&lt;sub&gt;1&lt;/sub&gt;&lt;/span&gt;&lt;span lang=&quot;EN-US&quot; style=&quot;mso-bidi-font-size: 10.0pt&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; /T&lt;/span&gt;&lt;/font&gt;&lt;p align=&quot;left&quot;&gt;&lt;font size=&quot;2&quot;&gt;　[说明] &nbsp;对平原和低建筑物典型的向下闪击，其可能的四种组合见附图6.3。对约高于 100m 的高层建筑物典型的向上闪击，其可能的五种组合见附图6.4。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;从附图6.3 和附图6.4 可分析出附图6.1。&lt;/font&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;p align=&quot;left&quot;&gt;&lt;font size=&quot;2&quot;&gt;&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/font&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft63.jpg&quot; width=&quot;518&quot; height=&quot;461&quot;&gt; &lt;p align=&quot;left&quot;&gt;&lt;font size=&quot;2&quot;&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;附图6.3 &nbsp;向下闪击可能的雷击组合&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft64.jpg&quot; width=&quot;501&quot; height=&quot;487&quot;&gt;&lt;br&gt;附图6.4 &nbsp;向上闪击可能的雷击组合&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;&lt;br&gt;--------------------------------------------------------------------------------&lt;br&gt;&lt;br&gt;&lt;br&gt;附录七 环路中感应电压、电流和能量的计算 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　1.在不同的线路结构和敷设路径（附图7.1）以及不同的外部防雷装置下当雷击建筑物的防雷装置时，在该等线路中预期的最大感应电压和能量可近似地按附表7.1 中的计算式计算。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;i—流经引下线的分雷电流；&lt;br&gt;&lt;br&gt;K—作自然引下线用的金属电缆管道；&lt;br&gt;&lt;br&gt;T—作引下线用的金属结构立柱；&lt;br&gt;&lt;br&gt;l—电气装置平行于引下线的长度；&lt;br&gt;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft71.jpg&quot; width=&quot;501&quot; height=&quot;487&quot;&gt;&lt;br&gt;i—流经引下线的分雷电流；&lt;br&gt;K—作自然引下线用的金属电缆管道；&lt;br&gt;T—作引下线用的金属结构立柱；&lt;br&gt;l—电气装置平行于引下线的长度；&lt;br&gt;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_fb71.jpg&quot; width=&quot;733&quot; height=&quot;424&quot;&gt;&lt;br&gt;&lt;br&gt;注：① 如金属窗框架与建筑物互相连接的钢筋在电气上有连接时本栏也适用于这类钢筋混凝土建筑物。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;　　② Ui──采用首次以后的雷击电流参量（附表6.2）时预期的最大感应电压； &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　Uk──采用首次雷击电流参量（附表6.1）时在电缆内导体与屏蔽层之间预期的最大共模压，RM /l＜0.1Ω/m；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;　　　　Uq──屏蔽电缆内导体之间预期的最大差模电压； &lt;br&gt;&lt;br&gt;　　　　w──当采用首次雷击电流参量（附表6.1）及环路由于产生火花放电而成闭合环路时，预期产生于环路内的最大能量；&lt;br&gt;&lt;br&gt;　　　　l──与引下线平行的电气装置的长度（m）；&lt;br&gt;&lt;br&gt;　　　　RM──电缆总长的电缆屏蔽层电阻（Ω）；&lt;br&gt;&lt;br&gt;　　　　a──引下线之间的平均距离（m）；&lt;br&gt;&lt;br&gt;　　　　h──防雷装置接闪器的高度（m）。 &lt;br&gt;&lt;br&gt;　　　③ 附表7.1 适用于第一类防雷建筑物的雷电流参量。对第二类防雷建筑物，表中的感应电压计算式应乘以 0.75（因第二类防雷建筑物的雷电流为第一类的 75%），能量计算式应乘以 0.56（即0.752=0.56，因能量与电流的平方成正比）。对第三类防雷建筑物，表中的感应电压计算式应乘以 0.5（因第三类防雷建筑物的雷电流为第一类的 50%），能量计算式应乘以 0.25（即0.52=0.25）。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;2.格栅形屏蔽建筑物附近遭雷击时在LPZ1区内环路的感应电压和电流。&lt;br&gt;　　在　LPZ1　区　Vs　空间内的磁场强度看成是均匀的情况下（见图6.3.2-1和图6.3.2-2），附图7.2 所示为无屏蔽线路构成的环路，其开路最大感应电压　Uoc/max 宜按下式确定：&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;　　　　　Uoc/max =μ0·b·l·H1/max/ T1 （V） &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;（附7.1）&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;式中：μ0──真空的磁导系数，其值等于 4π·10-7；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　　b ──环路的宽（m）；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　　l ──环路的长（m）；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　H1/max──LPZ1区内最大的磁场强度（A/m），按式（6.3.2-2）确定；&lt;br&gt;&lt;br&gt;若略去导线的电阻（最坏情况），最大短路电流 isc/max 可按下式确定：&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;　　　　　isc/max =μ0·b·l·H1/max/ L （A） &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; （附7.2） &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;式中：L──环路的自电感（H）。&lt;br&gt;&lt;br&gt;矩形环路的自电感可按下式计算： &lt;br&gt;&lt;br&gt;　　　　　L = {0.8√l2+b2 －0.8(l + b) + 0.4·l·ln[(2b/r)/ 1+√1+(b/l)2 &nbsp;] &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　+0.4·b·ln[(2l/r)/ 1+√1+(l/b)2 &nbsp;]}·10－6（H） &nbsp; &nbsp; &nbsp; &nbsp; （附7.3） &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;式中：r ──环路导线的半径（m）。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;3.格栅形屏蔽建筑物遭直接雷击时在LPZ1区内环路的感应电压和电流在 LPZ1 区 Vs 空间内的磁场强度 H1 应按式（6.3.2-4）确定。根据附图7.2 所示环路，其开路最大感应电压　Uoc/ max 宜按下式确定：&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;Uoc/ max =μ0·b·ln（1+l /dl/w）·kH·（w /√d1/r）·io/max/T1 （V） &nbsp; &nbsp; （附7.4）&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;式中：dl/ w──环路至屏蔽墙的距离（m），根据式（6.3.2-5）dl/w ≥ ds/2 ；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　dl/ r──环路至屏蔽顶的平均距离（m）；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　io/ max──LPZ0A 区内的雷电流最大值（A）；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　　kH──形状系数（1 /√m ），取 kH =0.01（1/√m ）；&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　　　　w ──格栅形屏蔽的网格宽（m）。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;若略去导线的电阻（最坏情况），最大短路电流 isc/ max 可按下式确定：&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;isc/ max =μ0·b·ln（1+l /dl/w）·kH·（w /√d1/r）·io/ max / L（A） &nbsp; &nbsp; （附7.5） &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft72.jpg&quot; width=&quot;565&quot; height=&quot;483&quot;&gt;&lt;br&gt;注：① 当环路不是矩形时，应转换为相同环路面积的矩形环路。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　② 图中的电力线路或信息线路也可以是邻近的两端做了等电位连接的金属物。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;4.在 LPZn+1 区（n等于或大于1）内的感应电压和电流&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　在 LPZn+1 区 Vs 空间内的磁场强度 Hn+1 看成是均匀的情况下（见图6.3.2-2），附图7.2所示环路，其最大感应电压和电流可按式（附7.1）和式（附7.2）确定，该两式中的 H1/max 应根据式（6.3.2-2）或式（6.3.2-6）计算出的 Hn+1/max代入。式（6.3.2-2）中的 H1 用 Hn+1/ max 代入，Ho 用 Hn/ max 代入。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　[说明] &nbsp;计算举例，以附图7.3和附图7.4两种装置作为例子。建筑物属于第二类防雷建筑物。以附表7.1中给出的计算式为基准，指出其实际的应用。两个例子中的线路敷设均无屏蔽。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　第I种情况：以附图7.3 所示的装置作为例子。外部防雷装置有四根引下线，它们之间的距离 a 设定为 10m。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　为评价电压 U1（它决定水管与设备G2 之间的最小分开距离S），采用附表7.1的（a）列和附图7.1的（a）图。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　　U1 = 0.75×l×√a/h ×100 = 0.75×6×√10/20 ×100 = 318kV &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;式中：l ──从水管至设备的最近点向下至水管水平走向的高（m）。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　若由于过大的电压U1而引发的击穿火花，其能量按附表7.1 的相关计算式评价： &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　　w1 = 0.56×l×a/h×2000 = 0.56×6×10/20×2000 = 3.36kJ &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;为评价电压 U2 （信息系统与低压电力装置之间的电压）采用附表7.1的（b）列和附图7.1的（b）图。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　　U2 = 0.75×l×√a/h ×2.0= 0.75×6×√10/20 ×2.0 = 8.5kV &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;评价击穿火花的相应能量则采用附表7.1 第一行的相关计算式： &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　　　　　 w2 = 0.56×l×a/h×1 = 0.56×6×10/20×1 = 1.68J&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft73.jpg&quot; width=&quot;565&quot; height=&quot;483&quot;&gt;&lt;br&gt;&lt;br&gt;1──通信系统；&lt;br&gt;2──电力系统；&lt;br&gt;G1──I 级设备（有PE线）； &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;G2──II 级设备（无PE线）； &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;U1──水管与电力系统之间的电压； &lt;br&gt;U2──通信系统与电力系统之间的电压；&lt;br&gt;d1──G2 设备与水管之间的平均距离，d1=1m； &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;h──建筑物高度，h =20m； &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;l──金属装置与防雷装置引下线平行路径的长度； &lt;br&gt;s──分开距离； &lt;br&gt;w──金属水管或其他金属装置。 &lt;br&gt;&lt;br&gt;注：本例设定水管与引下线之间在上端需要连接，因为它们之间的隔开距离小于所要求的安全距离。&lt;br&gt;&lt;br&gt;第 II 种情况：以附图7.4 的装置为例子。建筑物为无窗钢筋混凝土结构。计算方法与第 I 种情况相似。管线的路径与第 I 种情况相同。所采用的计算式为附表7.1 的最后一行。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　U1 = 0.75×l×1/√h ×2.0= 0.75×6×1/√20 ×2.0= 2kV &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　w1 = 0.75×l×1/h×1.5= 0.75×6×1/20×1.5 = 0.25J &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　U2 = 0.75×l×1/h×0.1= 0.75×6×1/√20 ×0.1= 22.5kV &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;　　　w2 = 0.56×l×1/h2×0.002= 0.56×6×1/400×0.002 =（略去不计） &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;比较第 I 种和第 II 种情况的 U1，可清楚地证实外墙采用钢筋混凝土结构所得到的屏蔽效率。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　附图7.3 中的 U2 电压和附图7.4 中的 U3 电压，其大小取决与低压电力线路与通信线路所形成的有效感应面积的大小。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　第 II 种情况所示的通信线路路径很明显是不利的，以致感应电压 U3 大于第I种情况采用的路径所产生的电压，即附图7.4中虚线所示的线路路径产生的 U2。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　附图7.4 所示的线路路径的 U3 电压预期可达到 U1=2kV 的值。&lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 　　参照现今实际的一般装置，由于等电位连接的规定，保护线（PE线）是与水管接触的。所以采用I级设备时 U1 电压可能发生于设备内的电力系统与通信系统之间。因此，采用无保护线的II级设备是有利的。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&lt;img src=&quot;http://asp.cn/img/50057/gb50057-94_ft74.jpg&quot; width=&quot;476&quot; height=&quot;386&quot;&gt;&lt;br&gt;&lt;br&gt;附图7.4 &nbsp;外墙为钢筋混凝土的建筑物 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;注：1. 图例和标注的意义见附图7.3；&lt;br&gt; 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U2和U3是通信系统和电力系统之间的电压，其大小取决于感应面积。 &lt;br&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;/body&gt;&lt;/html&gt;
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查看完整版本: [转帖]《建筑物防雷设计规范》GB50057-94 2000 年局部修订 附录5-7