Entire-process simulation of earthquake-induced collapse of a mockup cable-stayed bridge by vector form intrinsic finite element (VFIFE) method

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題名:	Entire-process simulation of earthquake-induced collapse of a mockup cable-stayed bridge by vector form intrinsic finite element (VFIFE) method
作者:	王仲宇;Duan, Y.F.;He, K.;Zhang, H.M.;Ting, E.C.;Wang, C.Y.;Chen, S.K.;Wang, R.Z.
貢獻者:	工學院土木工程學系
關鍵詞:	Cable-stayed bridges;Collapse;Computer simulation;Earthquake damage;Excitation;Mathematical analysis;Mockups;Seismic phenomena
日期:	2014-03-01
上傳時間:	2026-04-21 13:46:13 (UTC+8)
出版者:	SAGE Publications Inc.;London, England: SAGE Publications
摘要:	摘要： It is important to simulate the entire-process collapse of earthquake excited cable-stayed bridge in order to assure the damage extent under strong earthquakes and to optimize the anti-collapse seismic measures. The newly developed vector form intrinsic finite element (VFIFE) method is capable of computing large deformation, large displacement, collision, and fractures that would happen in the structural collapse. Therefore, it has the potential to simulate the entire-process collapse of earthquake excited structures. For the cable-stayed bridges, the axial forces change significantly during the earthquake excitation. The interaction between the axial forces and bending moments should be taken into account. In order to address this issue, this paper first presents the formulation for integration of VFIFE method and fiber beam-column element model. A bilinear elastic-plastic constitutive damage model is proposed for the mechanical behavior of the fiber and element. The collapse analysis of a 2D mockup bridge scaled from an actual cable-stayed bridge is then conducted. The entire process of the structural damage and collapse are successfully simulated by the proposed method VFIFE-Fiber. This study provides a foundation for seismic damage prediction and anti-collapse seismic design for cable-stayed bridges. 出版者： London, England: SAGE Publications 出版日期： 2014-03 出處： Advances in structural engineering, 2014-03, Vol.17 (3), p.347-360 版權： 2014 SAGE Publications 識別號： ISSN: 1369-4332 識別號： EISSN: 2048-4011 識別號： DOI: 10.1260/1369-4332.17.3.347
顯示於類別:	[土木工程學系 ] 期刊論文

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