山地建筑等效截收面积的计算研究

Calculation Study on Equivalent Interception Area of Mountainous Buildings

根据GB 50057-2010《建筑物防雷设计规范》中建筑物等效截收面积Ae的计算方法,结合重庆山地建筑特点,提出建筑物防雷高度的概念并分析山地建筑防雷高度的选取方式,说明利用滚球法(R=100 m)计算其Ae的原理,阐述不同类型山地建筑Ae的简易计算方法。

According to the calculation method of building equivalent cross‑sectional area Ae in the Code for Design Protection of Structures against Lightning(GB 50057-2010),and combined with the characteristics of mountainous buildings in Chongqing,this paper puts forward the concept of building lightning protection height,analyzes the selection method of mountainous buildings lightning protection height,explains the principle of using roll‑ball method(R=100m)to calculate its Ae,and expounds the simple calculation methods of different types of mountainous buildings Ae.