Combination coefficient of ESWLs of a high-rise building with an elliptical cross-section

Qinhua Wang, Shuzhi Yu, Chiujen Ku and Ankit Garg

Abstract

As the height and flexibility of high-rise buildings increase, the wind loads become more dominant and the combination coefficient of Equivalent Static Wind Loads (ESWLs) should be considered when they are used in the structural design. In the first phase of the study, a brief introduction to the theory on the combination coefficient for high-rise buildings was given and then the time history of wind-induced responses of a 208-meter high-rise building with an elliptical cross-section was presented based on the wind tunnel test results for pressure measurement. The correlation between wind-induced responses was analyzed and the combination coefficients of ESWLs of the high-rise buildings using Turkstra's rule, and Asami's method, were calculated and compared with related design codes, e.g., AIJ-RLB, ASCE 7-10, and China Load Code for structural design. The results of the study showed that the combination coefficients from Asami's method are conservative compared with the other three methods. The results of this paper would be helpful to the wind-resistant design of high-rise buildings with elliptical crosssection.

Key Words

high-rise buildings with elliptical cross-section; combination coefficient; correlation of wind-induced responses; equivalent static wind loads

Address

Qinhua Wang:Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China/ Key Laboratory of Structure and Wind Tunnel of Guangdong Higher Education Institutes, Shantou 515063, China Shuzhi Yu:Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China Chiujen Ku:Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China Ankit Garg:Guangdong Engineering Center for Structure Safety and Health Monitoring, Shantou University, Shantou 515063, China

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