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Analysis of three dimensional equivalent static wind loads of symmetric high-rise buildings based on wind tunnel tests

  • Liang, Shuguo (School of Civil and Building Engineering, Wuhan University) ;
  • Zou, Lianghao (School of Civil and Building Engineering, Wuhan University) ;
  • Wang, Dahai (School of Civil Engineering and Architecture, Wuhan University of Technology) ;
  • Huang, Guoqing (School of Civil Engineering, Southwest Jiaotong University)
  • Received : 2013.11.28
  • Accepted : 2014.08.31
  • Published : 2014.11.25

Abstract

Using synchronous surface pressures from the wind tunnel test, the three dimensional wind load models of high-rise buildings are established. Furthermore, the internal force responses of symmetric high-rise buildings in along-wind, across-wind and torsional directions are evaluated based on mode acceleration method, which expresses the restoring force as the summation of quasi-static force and inertia force components. Accordingly the calculation methods of equivalent static wind loads, in which the contributions of the higher modes can be considered, of symmetric high-rise buildings in along-wind, across-wind and torsional directions are deduced based on internal forces equivalence. Finally the equivalent static wind loads of an actual symmetric high-rise building are obtained by this method, and compared with the along-wind equivalent static wind loads obtained by China National Standard.

Keywords

high-rise building;equivalent static wind load;mode acceleration method;internal force responses

Acknowledgement

Supported by : China National Natural Science Foundation

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