中、美、加、欧屋面雪荷载规范对比  

Comparison of snow load requirements in design codes used in China,USA,Canada and EU

作　　者：范峰[1] 莫华美[1] 洪汉平[2] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]加拿大西安大略大学土木与环境工程系

出　　处：《哈尔滨工业大学学报》2011年第12期18-22,共5页Journal of Harbin Institute of Technology

基　　金："十一五"国家科技支撑项目:"高性能建筑结构设计关键技术研究"(2006BAJ01B02)

摘　　要：陈述了我国规范与美国、加拿大和欧盟规范在雪荷载取值方面的差异.结果表明:我国规范的雪荷载计算公式过于简单,不能充分考虑各种相关因素对雪荷载的影响;我国规范规定的屋面雪荷载临界坡度在4本规范中最小;在双坡、拱形和高低屋面中,我国规范的雪荷载剖面与国外规范差异较大;最后给出对我国规范雪荷载取值规定的一些初步修改建议,为我国雪荷载规范的修订和完善提供思路和参考.This study compares the snow load provisions recommended in design codes used in China,USA,Canada and the EU.It shows that the basic snow load requirements in Chinese standard are too simplistic to cope with major factors that control the complex roof snow load patterns.The recommended critical roof slope in Chinese standard is the lowest among the considered four design codes.Furthermore,the recommended snow loads for the gable,arched and step roofs in Chinese standard differ from the other three design codes in terms of the snow load pattern.The comparison allowed us to suggest some preliminary modifications to snow load requirements in Chinese standard,although a detailed probability-based calibration is needed to confirm the recommended changes.

关 键 词：雪荷载 规范对比 修改建议 

分 类 号：TU312.1[建筑科学—结构工程]