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侧击雷防护是高层建筑(含超高层)雷电防护的重要内容之一。以第二类防雷建筑为例,结合电气几何模型和雷电流特性,分析了高层建筑侧击雷的雷电流幅值范围及其概率分布特征。结果表明:建筑物越高,雷电侧击概率越大,且与建筑物高度成指数关系增长;建筑物越高,发生雷电侧击的雷电流幅值范围越大。基于此,讨论了防雷工程中常见的侧击雷防护技术问题,为高层建筑的侧击雷防护提供参考。
Side lightning protection is one of the important contents of lightning protection of high-rise buildings (including super-high-rise buildings). Taking the second type of lightning protection building as an example, the range of lightning current amplitude and the probability distribution characteristics of the side lightning stroke of the tall building are analyzed combining with the geometric model of the electrical and the characteristics of the lightning current. The results show that the higher the building is, the greater the probability of thunder and lightning strikes is and the higher the exponential relationship with the height of the building is. The higher the building is, the larger the amplitude of the thunder and lightning current is. Based on this, the common side lightning protection technology in lightning protection project is discussed, which provides a reference for side lightning protection of tall buildings.