摘要
在山区建筑物抗风设计中,必须考虑地形对风场的影响。对比分析了中国GB 5009-2012、日本AIJ-2004、美国ASCE/SEI 7-10、加拿大NBC-2005、国际ISO标准ISO 4354-2009(E)、澳大利亚/新西兰AS/NZS 1170.2-2011、欧洲BS EN 1991-1-4-2005、德国DIN 1055-4、英国BS 6399-2-1997等荷载规范中关于山地风速地形修正系数的有关规定。为便于比较,将地形修正系数计算公式统一形式。结合单体山峰风洞试验,探讨了不同坡度、不同维度山峰的迎风区、山顶和背风区的地形修正系数分布,对地形修正系数的规定提出建议。
Wind topographic effect should be considered for the wind-resistant design of buildings in hilly terrain.A detailed comparison on wind topographic factor of hilly terrain is made considering different Codes and standards,such as China(GB 50009-2012),Japan(AIJ-2004),America(ASCE/SEI 7-10),Canada(NBC-2005),ISO(ISO 4354-2009(E)),Australia/New Zealand(AS/NZS 1170.2-2011),Europe(BS EN 1991-1-4-2005),Britain(BS 6399-2-1997),etc.The expressions for calculating wind topographic factor are modified to a simplified unified form for the clarity of concepts.To investigate the distribution of the topographic factor along the hillside,wind tunnels test results of a single hill model with different slopes are introduced.Some suggestions for topographic factor are put forward.
作者
胡伟成
杨庆山
张建
HU Wei-cheng;YANG Qing-shan;ZHANG Jian(Department of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Department of Civil Engineering,Chongqing University,Chongqing 400044,China;Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment,Beijing 100044,China)
出处
《工程力学》
EI
CSCD
北大核心
2018年第10期203-211,共9页
Engineering Mechanics
基金
国家自然科学基金重点项目(51578059)
关键词
山地地形
风场
荷载规范
地形修正系数
风洞试验
hilly terrain
wind field
load codes and standards
wind topographic factor
wind tunnel test
