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《Sichuan Building Science》 2018-05
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Study on wind loads of asymmetric twin-tower tall building over complex terrain

WU Zeda;LIU Xinpeng;XIONG Hui;YAN Zhitao;School of Civil Engineering,Chongqing University;School of Civil Engineering and Architecture,Chongqing University of Science and Technology;  
In order to study the asymmetric twin-tower tall building over a complex terrain,wind tunnel tests on the rigid model of an asymmetrical twin-tower tall building were conducted to obtain the time-history datum of the wind pressure of the two towers. The average wind pressure coefficients of each measurement point of the two towers were obtained. Based on the average wind pressure coefficients,the wind load distributions and wind pressure correlations of the twin-tower structure were studied. The results show that the complex surrounding environment will reduce the average wind pressure coefficients of the windward sides of the towers A and B by30% to 50%,and the tower B has a greater impact on the tower A,leading to the average wind pressure coefficients of the windward surface of tower A in the height of tower B are a large negative value,and the average wind pressure coefficients are reduced by 50%outside the height range. The existence of tower B will also result in a negative value of the horizontal correlation coefficient in the windward side of tower A. So it is necessary to pay attention to the negative pressure in the windward side during the design process.
【CateGory Index】: TU973.213
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