摘要
以CAARC标模为研究对象,通过采用刚性模型同步测压试验和高频覆面积分计算方法(HFPI),展开单一施扰情况下施扰建筑高度、位置对受扰建筑静力和动力风荷载特性的影响研究。研究结果表明:当施扰建筑处于受扰建筑上游正前方时,表现出遮挡效应;当施扰建筑处于侧向时,静力干扰系数均在1.0~1.1之间;施扰建筑对顺风向基底弯矩谱的影响较小,对横风向基底弯矩谱起到一定程度的削弱作用,且随着施扰高度增加,削弱程度会增加。
A series of wind tunnel tests were carried out to obtain the dynamic pressure on the surfaces of the CAARC rigid model.Based on these test data,wind load histories of the building were calculated by using the method of high frequency pressure integral（HFPI）. The influence between a single building and the CAARC model was analyzed in different cases,such as,different heights of the interfering building,and also different positions of the interfering building. The results show that,when the interfering building forwards in the disturbed building upstream,the shielding effect was shown evidently;when the interfering building putted in the lateral position,static interference coefficient was between 1.0~1.1;the across-wind base moment spectra energy would be reduced by the interfering building with more height.
出处
《广东土木与建筑》
2017年第6期27-30,共4页
Guangdong Architecture Civil Engineering
关键词
CAARC标模
干扰效应
弯矩谱
风洞试验
CAARC model
interference effect
bending moment spectrum
wind tunnel test
