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双塔结构风荷载干扰效应试验研究 被引量:2

WIND LOAD EXPERIMENTAL INVESTIGATION OF INTERFERENCE EFFECTS ON A DOUBLE TOWER STRUCTURE
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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.
出处 《工程力学》 EI CSCD 北大核心 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)
关键词 双塔结构 风洞试验 风压 体型系数 干扰效应 double tower wind tunnel test wind pressure shape coefficient interference effects
作者简介 刘庆宽(1971-),男,河北保定人,教授,博士,从事桥梁及结构抗风研究(E—mail:lqk@stdu.edu.cn). 马文勇(1981-),男,陕西蒲城人,讲师,博士,从事结构抗风研究(E—mail:mawenyong@126.com; 盛永青(1984-),男,辽宁盖县人,硕士生,从事结构抗风研究(E—mail:shengyongqingsheng@163.com); 侯莉倩(1987-),女,河北石家庄人,硕士生,从事结构抗风研究(E—mail:houliqian1987@163.com)
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