（浙江大学建筑工程学院， 杭州 310058）

［摘要］以实际工程为背景，提出了通过改变两建筑物排布角度的方法，以探索较有利的风荷载作用状况。针对中心间距为90m、高度为280m的两幢圆角方形高层建筑，设计了四种不同相对角度的排布方式，对这四种方式以及单体建筑分别进行了风洞模型试验和风振响应分析。结果表明，角对角排布和错位30°排布形式能够降低建筑风荷载局部体型系数和结构所受的扭矩，而边对边排布能够使得整体体型系数和基底合力达到最小；边对边排布条件下结构顶层峰值位移和峰值加速度最小。

［关键词］高层建筑； 双塔建筑； 建筑布局； 风荷载； 风振响应

中图分类号：TU973-213文献标识码：A文章编号：1002-848X(2019)14-0126-05

Study on wind-load characteristics of twin-tower high-rise buildings in equal distance layout

Chen Qiang, Chen Shuifu, Shi Zhuoran

（College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China)

Abstract:Based on the actual project, the method of changing the layout angle of the two buildings was proposed to explore the favorable wind load condition. Four different relative angle arrangement methods were designed for two round square high-rise buildings with center spacing of 90m and height of 280m. Wind tunnel model test and wind vibration response analysis were carried out for these four methods and individual buildings respectively. The results show that the angular diagonal arrangement and the misaligned 30° arrangement can reduce the local body shape coefficient and the torque of the structure, while the edge-to-edge arrangement can minimize the overall body shape coefficient and the base force; top displacement and peak acceleration of the top layer of the structure are the smallest under the edge-to-edge arrangement condition.

Keywords:high-rise building; twin-tower building; building layout; wind load; wind dynamic response