近年来，高层建筑在我国如雨后春笋般地不断涌现。以上海为例．目前已建成的高层建筑就达2000多幢．其中，20层以上的高层民用建筑占了绝大多数。根据《建筑设计防人规范》（GBJ16一87)及《高高层民用建筑设计防火规范》（；B5O045-95）的规定．九层（含九层）以下的住宅（包括 In recent years, high-rise buildings have mushroomed in China. Take Shanghai as an example. There are currently more than 2,000 high-rise buildings built. Among them, high-rise civil buildings with more than 20 floors accounted for the vast majority. According to “Architecture Design Anti-Person Regulations” (GBJ16-87) and “High-rise Civil Building Design Fire Prevention Code” (B5O045-95) requirements. Nine floors (including nine floors) of residential buildings (including