屋面不设接闪网格的情况计算

Calculation of Case without Air-termination Grid on Roof

根据实际案例,通过使用滚球法及GB 50057—2010《建筑物防雷设计规范》相关公式计算,探讨了实际项目中屋面不设接闪网格的可能性,计算了不设置接闪网格后可节省的钢材质量,并计算了不上人屋面和上人屋面两种类型的建筑中一些可以不在屋面上做接闪网格的判据。

According to the actual case,using the rolling ball method and the correlation formula of GB 50057—2010“Code for design protection of structures against lighting”,the possibility of not setting the air-termination grid is discussed in the actual project,and the quality of steel that can be saved without installing the air-termination grid is calculated.Furthermore,some criteria that cannot be used as air-termination grids on the non-accessible roofs and accessible roofs are calculated.