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《Journal of Liaoning Technical University(Natural Science)》 2010-01
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Vulnerability analysis based on important factors of members

LI Ning1,YANG Bo2,JIANG Shaofei3 (1. Department of Construction and Develop Office,Shenyang 110013,China; 2. School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China; 3. College of Civil Engineering,Fuzhou University,Fuzhou 350108,China)  
Structural function decreases due to structural and material deterioration. In order to effectively manage large-scale and complex structures and reduce damage extents by various disasters,it is nowadays a focus to investigate the structural vulnerability and continuous collapse. In this paper,the principle of structural vulnerability is introduced,and then a new structural vulnerability analysis method based on the important factors of members is proposed. In the method proposed,the important factors of members are calculated,and then the redundancy of each member is obtained using the relationship between the redundancy and the important factors. The failure mode is searched through the redundancy. Therefore,the weak link is found and the fragile failure path is determined by the strain energy. A case study is conducted using a five-story steel frame. The results show that the proposed method is feasible and effective.
【Fund】: 福建省青年科技人才创新基金资助项目(2007F3054);; 教育部重点科技基金资助项目(208064);; 福建省教育厅A类重点基金资助项目(JA07002)
【CateGory Index】: TU312.3
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