Analysis of load characteristics and responses of low-rise building under tornado. (2017)

• Record Type: Journal Article
• Authors: Xu, Feng; Ma, Jie; Chen, Wen-li; Xiao, Yi-qing; Duan, Zhong-dong
• Is Part Of: Procedia engineering. Volume 210(2017)
• Page Start: 165
• Page End: 172
• Publication Date: 2017
• Subjects: Tornado -- CFD -- Low-rise building -- Finite elemen model -- Fluid structure interaction; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.11.062
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: In this paper, the numerical model of the tornado generator is established by using the computational fluid dynamics (CFD) method. The radar observed wind profiles of Spencer tornado (1998) are used as inlet boundary condition to form tornado wind field, and the influence of surface roughness is taken into account. This method is used to generate the tornado wind field with the same intensity as recorded in our country, and the wind load characteristics of low-rise building located in different positions in the tornado wind field are analyzed. Then the finite element model of the building is established by ANSYS software, and the building is considered as steel frame-steel plate composite wall structure, which rationality of the finite element model is determined by the modal analysis. The one-way fluid structure interaction method is adopted to transfer the tornado load to the surface of the finite element model, and the displacement response, deformation and damage state of the wall surface and roof surface of the building in different locations of the tornado wind field are analyzed in detail.