钢架结构库房防雷设计

Lightning Protection Design of Steel Frame Structure Warehouse

由金属屋面、金属外皮夹心层围护材料的钢架结构建筑,对雷电临近闪击而言,是一个自然的人工电磁屏蔽体;但当雷电闪击这类建筑物时,支撑建筑的钢架结构金属体内即有直击雷电流通过并入地泄流,可能导致建筑内部二次雷电感应雷击事故。在建筑外表添加安装与其金属体绝缘防直击雷装置,拦截直击雷击电流并将拦截到的雷电流分流屏蔽入地,完全能避免雷电击在建筑物本体上,有效地避免二次雷电感应危害。

A steel frame structure building made of metal roof and metal sandwich layer enclosure material is a natural artificial electromagnetic shielding body for lightning near lightning strikes;But when lightning strikes such buildings,there is a direct lightning current flowing through the metal body of the steel frame structure supporting the building,which may lead to secondary lightning induced lightning accidents inside the building.Adding insulation devices to the exterior of buildings to prevent direct lightning strikes,intercepting direct lightning current and diverting and shielding the intercepted lightning current to the ground,can completely prevent lightning strikes on the building body and effectively avoid secondary lightning induction hazards.