多国荷载规范中平屋盖及球形屋盖体型系数取值探讨  

Comparison of shape factors for flat and domed roofs in different countries' wind load standards

作　　者：孙瑛[1] 赵柏玲[1] 曹正罡[1] 武岳[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《空间结构》2009年第2期16-21,共6页Spatial Structures

基　　金：国家自然科学基金重大研究计划重点项目(90815021);国家自然科学基金资助项目(50708030);第42批中国博士后基金资助

摘　　要：风荷载体型系数一直是风工程和风荷载规范研究专家关注的主要问题之一.本文首先总结了各国荷载规范中风荷载规定的差异,并就平屋盖和球形屋盖的风载体型系数对比了中国规范(GB50009-2001)、美国规范(ASCE7-98)、加拿大规范(NBC-1995)和日本规范(AIJ-2004)中的规定.最后结合大跨度平屋盖与球形屋盖的风洞试验,给出了球形屋盖和平屋盖的风载体型系数取值建议,为大跨屋盖结构的抗风设计提供了参考资料.Shape factor is usually a hot topic in research of wind engineering and wind load standards. In this paper, main differences in wind load standards of different countries are summarized firstly. Secondly, shape factors of wind pressure for flat roof and dome are compared between ASCE7-98, AIJ-2004, NBC- 1995 and GB50009-2001. Finally, based on wind tunnel test data, shape factor for flat and domed roofs are suggested, which can provide guidance for designers.

关 键 词：风荷载规范 平屋盖 球形屋盖 风载体型系数 

分 类 号：TU312.1[建筑科学—结构工程]