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《Journal of Fuzhou University(Natural Science Edition)》 2010-03
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The assessment method of safety performance of cable-stayed bridge under multi-hazard based on structure vulnerability

GU Yin1,2,FAN Li-chu 2,YE Jian-ren 1(1.College of Civil Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;2.Department of Bridge Engineering,Tongji University,Shanghai 200092,China)  
The objective of this paper is to assess the promise of a novel tool for structural safety performance decision-making in multi-hazards.A straightforward measure is put forward for measuring the intensity of unforeseen hazards:the number of connected members "removed" from a structure in a brittle fashion.The importance indices of structural components of the structure was given,which is analyzed based on component stiffness.The redundancy level is studied by the important index combined with sensibility analysis.A typical cable-stayed bridge is analyzed based on this method.The weak parts in structure can be explored to assess the vulnerability of structure.Depending on this method,the assessment of the cable-stayed bridge is intended to identify those cable-stayed bridges that are structurally deficient and establish an order of priorities for retrofit.
【Fund】: 中国博士后科学基金资助项目(20070420112);; 福建省教育厅科研资助项目(JA07013)
【CateGory Index】: U448.27
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