超高层建筑间的干扰效应:建筑外形的影响及干扰因子分布的相关特征  

Interference effects of high-rise buildings: effects of building shapes and correlations of envelope interference factors

作　　者：谢壮宁[1] 洪海波[1] 李神云[1] 

机构地区：[1]汕头大学土木工程系,广东汕头515063

出　　处：《建筑结构学报》2008年第2期13-18,共6页Journal of Building Structures

基　　金：国家自然科学基金项目(50478118);国家自然科学基金重大研究计划重点项目(90715040)资助

摘　　要：采用高频底座力天平方法,研究了不同断面形状的施扰建筑对一正方形断面受扰建筑的静力和动力干扰影响,分析了正方形断面施扰建筑和正方形切角断面施扰建筑的干扰效应的相关性。结果显示:施扰建筑结构断面的特征尺寸对其所产生的干扰响应起着关键性的作用,当施扰建筑的特征尺度相同时,切角和正方形截面施扰建筑的包络干扰因子(EIF)分布存在明显的相关性,并由此得到了一类特征尺寸相同的不同断面施扰建筑对包络干扰因子分布影响的回归关系(相关系数大于0.91,回归余差小于0.08),较大程度地简化了干扰响应研究结果的繁杂程度,简化了受扰建筑的荷载取值过程。The mean interference effects and dynamic effects of different cross-section tall buildings on a square section interfered building are studied based on the high frequency force balance technique. The correlations of interference effects between the square cross-sectional interfering building and the comer-cut interfering building are also analyzed. The results show that the characteristic dimension of the interfering building is the key factor that affects the distributions of the dynamic envelope interference factor （ElF） . Significant correlations are found between the EIFs of the interfering buildings with same characteristic dimensions. Relevant regression equations, in which the maximum residual is 0.08 and the minimum correlation coefficient is O. 91, are also proposed to simplify the complexity of interference effects of interfering buildings with different shapes.

关 键 词：高层建筑 风荷载 风洞试验 相关分析 干扰效应 

分 类 号：TU973.213[建筑科学—结构工程] V211.74[航空宇航科学与技术—航空宇航推进理论与工程]