Abstract

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Title:: Research on Diaphragm Arrangement of Quadrangular Tubetype Steel Frame Tridimensional Parking Structure

Author(s):: HE Yong-jun; ZHOU Xu-hong; TANG Jia-yun; School of Civil Engineering, Hunan University

Keywords:: tridimensional parking structure; diaphragm arrangement; structural deformation; static property; lateral displacement

Abstract:: A tridimensional parking structure with diaphragms was presented by setting diaphragms at some levels of the quadrangular tubetype steel frame. A structural analysis model was established by finite element software SAP2000. By comparing the static property of the structures with different diaphragm arrangement schemes, the effects of diaphragms on structural optimum properties, including the lateral displacement and internal force distribution of the middle frame and the deformation of the parking areas and lifting areas, were studied. Meanwhile, the optimal arrangement scheme of diaphragms was investigated. Results indicate that the behavior of the quadrangular tubetype steel frame tridimensional parking structure is significantly improved for the diaphragms. Besides, the storey shifts of the middle frame become smaller and more uniformly, the deformation of the parking areas and lifting areas is effectively restrained, which is conducive to parking of vehicles and operation of the lifting equipment. Moreover, the sudden change of column internal forces becomes relatively moderate. Synthesizing the cost and structural behaviors, arranging diaphragms every four storeys is the optimal scheme.