双塔结构风荷载干扰效应试验研究  

WIND LOAD EXPERIMENTAL INVESTIGATION OF INTERFERENCE EFFECTS ON A DOUBLE TOWER STRUCTURE

作　　者：刘庆宽[1] 马文勇[1] 盛永青 侯莉倩 

机构地区：[1]石家庄铁道大学风工程研究中心,河北石家庄050043

出　　处：《工程力学》2011年第A01期75-79,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(50878135);河北省科技支撑计划项目(09215626D);河北省自然科学基金项目(E2008000442)

摘　　要：在模拟的大气边界层中,通过双塔结构刚性测压模型风洞试验,研究了两高耸建筑间的风荷载分布特征,通过分析结构的体型系数,研究了两建筑间的风荷载干扰效应。结果表明:该双塔结构风干扰效应主要表现为遮挡效应和狭管效应,由于位于上流的施扰建筑的影响,受扰建筑的负压绝对值明显减小;当施扰建筑平行与受扰建筑时,狭管效应导致位于两个建筑之间的负风压值大幅高,且随着建筑高度的增大,该狭管效应逐渐减弱。Based on the rigid pressure testing model of double towers structures,the paper studied the characteristics of wind load acting on a double tower structure by wind tunnel tests in simulated atmospheric boundary layers.By analyzing shape coefficients,wind induced interference effects were studied.Results show that block effect and slit-width effect are significant.The negative wind pressure on the interfered structure is very low due to the existing of the upwind interfering structure.The negative wind pressure on the wall facing one tower becomes much higher when the interfering structure is parallel to the interfered structure along the wind direction due to the slit-width effect.The slit-width effect becomes smaller with the increase of building height.

关 键 词：双塔结构 风洞试验 风压 体型系数 干扰效应 

分 类 号：TU312[建筑科学—结构工程] TU317