基于现场实测的膜结构风场特性研究  

A study of the wind characteristics of membrane structures based on field measurements

作　　者：张建胜[1] 李伟杭[1] 王建东[1] 陶瑾[1] 吴力平[2] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014 [2]杭州科技职业技术学院,浙江杭州310018

出　　处：《浙江工业大学学报》2016年第2期216-220,共5页Journal of Zhejiang University of Technology

基　　金：浙江省科技厅公益技术应用研究项目(2014C33031)

摘　　要：为了研究膜结构的风特性和风压分布,对一双曲抛物面形膜结构的风场特性进行了现场实测。通过分析2015年7月一次大风过程的数据,得到了该膜结构屋面的风特性和风压分布情况,并与数值模拟结果进行对比分析。分析结果表明:屋面来流风一侧以负风压为主,且来流风一侧屋面的风压较大,另一侧则反之;随着风速的增大,屋面的风压系数基本保持不变;屋面的风压系数实测值略小于数值模拟的数值,但两者分布一致且相差不大.In order to study the wind characteristics and wind pressure distributions of membrane structures,field measurements were conducted on the wind characteristics of a pair of hyperbolic parabolic membrane structures.By analyzing the data of a big wind in July 2015,the wind characteristics and wind pressure distributions of the membrane structures were obtained and compared with the results of numerical simulations.The analysis results indicate that negative wind pressure predominates on the wind inflow side of the roof and the wind pressure is higher.However,the situation is the opposite on the other side.The wind pressure coefficient is basically invariable as the wind speed increases.Although the measured wind pressure is slightly smaller than the results of numerical simulations,their distributions are similar.

关 键 词：膜结构 现场实测 风特性 数值模拟 

分 类 号：TU312.1[建筑科学—结构工程]