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双坡低矮建筑风压系数的概率统计特性分析
引用本文:全涌,顾明,陈斌.双坡低矮建筑风压系数的概率统计特性分析[J].土木工程学报,2011(7).
作者姓名:全涌  顾明  陈斌
作者单位:同济大学土木工程防灾国家重点实验室;杭州市市政设施监管中心;
基金项目:国家科技支撑计划课题(2006BAJ06B05,2008BAJ08B14); 国家自然科学基金创新研究群体基金(50621062)
摘    要:基于低矮建筑表面风压测量风洞试验数据,分析了低矮建筑各部位风压系数的概率统计特征。分析结果显示,在迎风墙、屋盖上风区和侧墙上风区以及斜风时屋盖某些关键测点上,风压系数的偏度系数和峰度系数都严重偏离高斯过程对应值,表现出很强的非高斯性;在背风墙、屋盖下风区和侧墙下风区,尽管风压系数的偏度系数接近高斯过程对应值,但峰度系数仍然偏大,风压系数仍然是非高斯性的。将利用峰值因子法得到的模型各测点上的最不利正、负风压系数与直接观察法得到的结果进行了对比,结果表明,峰值因子法低估了墙面上的最不利正、负风压系数,低估了屋盖上的最不利负风压系数,但高估了屋盖上的正风压系数,估计误差率在-37%~+120%之间。

关 键 词:低矮建筑  风压系数  概率分析  非高斯性  

Statistical and probabilistic anaysis of wind pressure coefficients on gable-roofed low-rise buildings
Quan Yong Gu Ming Chen Bin.Statistical and probabilistic anaysis of wind pressure coefficients on gable-roofed low-rise buildings[J].China Civil Engineering Journal,2011(7).
Authors:Quan Yong Gu Ming Chen Bin
Affiliation:Quan Yong1 Gu Ming1 Chen Bin2(1.State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China,2.Hangzhou Municipal Installation Supervision and Administration Center,Hangzhou 310003,China)
Abstract:Based on pressure measurement in a wind tunnel test of a series of low-rise building models,the statistical and probabilitic aspects of the wind pressure coefficients on the surfaces of low-rise buldings are analysed.The resuilts indicate that the skewness coefficients and kurtosis coefficients of wind pressure coefficients on windward wall,upwind part of the roof and side wall,and crucial points on the roof for oblique wind are far from those of Gaussian process.The skewness coefficients for leewind wall,d...
Keywords:low-rise building  wind pressure coefficient  probabilistic analysis  non-Gaussian  
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