复杂体型低矮房屋风荷载特性风洞试验研究 - 西安建筑科技大学学报.pdf
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第 48 卷 第 6 期 西安建筑科技大学学报(自然科学版) Vol.48 No.6
2016 年 12 月 J. Xian Univ. of Arch. Tech. (Natural Science Edition) Dec. 2016
DOI: 10.15986/j.1006-7930.2016.06.010
复杂体型低矮房屋风荷载特性风洞试验研究
聂少锋1 2 1 2
,周绪红 ,陶 莹 ,石 宇
( 长安大学建筑工程学院,陕西 西安 ; 重庆大学土木工程学院,重庆 )
1. 710061 2. 400044
对具有复杂体型的“ ”型和“ ”型低层房屋风荷载特性进行了风洞试验研究.研究了屋面平均和脉动风压系数的
摘要: L T
分布规律以及体型系数,并与传统 一 型低层双坡屋面房屋的风荷载特性进行了对比分析.结果表明: 坡角时,屋檐及
“ ” 30°
屋脊附近因气流分离常形成较高负压,迎风屋面平均风压系数多呈环状分布;当屋面处于背风区域时,风压系数分布较均
匀;“ ”型和“ ”型低层房屋与传统“一”型房屋相应各面体型系数变化规律有一定的相似性,但是必须考虑各面间的
L T
相互干扰使得其风压增大的效应.
关键词:双坡屋面;复杂体型;低层房屋;风洞试验;风压系数;体型系数
中图分类号:TU312.1 文献标志码:A 文章编号:1006-7930(2016)06-0832-07
Wind tunnel test on wind load characteristics
of low-rise buildings with complex shape
1 2 1 2
NIE Shaofeng , ZHOU Xuhong , TAO Ying , SHI Yu
(1. School of Civil Engineering, Chang’an University, Xiʹan 710061, China;
2. School of Civil Engineering, Chongqing University, Chongqing 400044, China)
Abstract: Wind tunnel test on wind load characteristics of low-rise buildings with complex shapes of “L” and “T” were presented.
The distribution rules of mean wind pressure and fluctuating wind pressure coefficient of roof as well as shape coefficients of each
surface were analyzed in detail. The wind load characteristics of “L” and “T” shape models were compared with which of low-ris
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