建筑结构学报2017，Vol.38Issue(10)：88-94,7.DOI:10.14006/j.jzjgxb.2017.10.010
高层建筑基于风速风向联合概率分布作用的风致响应可靠度分析
Reliability analysis of wind-induced response of high-rise buildings with effect of joint distribution of wind speed and direction
摘要
Abstract
In order to evaluate the reliability of human-comfort of high-rise buildings under wind excitation,the approximate analytical formula of root mean squared (RMS) wind-induced acceleration of high-rise building top was deduced in this paper.The joint probability distribution model of wind speed and direction was established.Taking the Guangzhou West Tower as an example,the engineering meteorological analysis and wind tunnel test results for this super high-rise building were investigated.By adopting the curve fitting method and random vibration theory,the empirical formula of wind-induced acceleration response of this high-rise building can be expressed in terms of the mean wind speed at 10m above ground level,the natural frequency and damping ratio of the investigated building.Considering the mean wind speed as random variable with Weibull distribution,and damping ratio of the building as random variable with normal distribution,the reliability of human-comfort of tall buildings was evaluated by the checkpoint method in reliability theory.The combined effect of joint probability distribution of wind speed and direction on the reliability analysis of human-comfort of tall buildings was considered by adopting the conditional probability multiplication theorem.Analysis results show that the failure probabilities of wind-induced acceleration response in each wind approaching direction are obviously different.Therefore the joint probability distribution model of wind speed and direction should be included in the reliability analysis.The final analysis results also show that the reliability of wind-induced acceleration response (human-comfort) of the investigated high-rise building top can reach 99.98％ under the wind excitation of design wind speeds with 10-year return period.关键词
高层建筑/风致振动分析/可靠度分析/风速风向联合分布/风振舒适度Key words
high-rise building/wind-induced vibration analysis/reliability analysis/joint probability distribution of wind speed and direction/wind-induced serviceability分类
建筑与水利引用本文复制引用
吴玖荣,郑庆星,傅继阳,唐争兵,谢壮宁..高层建筑基于风速风向联合概率分布作用的风致响应可靠度分析[J].建筑结构学报,2017,38(10):88-94,7.基金项目
国家自然科学基金项目(51378134,51578169),广东省高等学校高层次人才项目,长江学者和创新团队研究计划(IRT13057). （51378134,51578169）
