Repair and Strengthening Assessment of Existing Bridges Based on Time-Dependent Reliability Analysis  

作　　者：孙晓燕 黄承逵 孙保沭 

机构地区：[1]Civil Engineering Departmet, Tsinghua University [2]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology [3]Department of Hydraulic and Hydropower Engineering, North China Institute of Water Conservancy and Hydropower

出　　处：《Journal of Southwest Jiaotong University(English Edition)》2004年第2期159-164,共6页西南交通大学学报（英文版）

基　　金：TheLiaoningProviceCommunicationDe partmentKeyScienceFoundation (No .0 10 1)

摘　　要：The strategy on repair and strengthening of existing bridges based on time-dependent reliability was analyzed with the maximum expected benefit as the objective function. A sample of risk-ranking decision was illustrated based on updated inspection information with 35 survival age. The effect of improvement of live loads and difference of repair methods on time-dependent reliability of existing bridges are considered. The results show that the decision method can be used in real project, with the cost of failure consequence and the risk of failure considered.The strategy on repair and strengthening of existing bridges based on time-dependent reliability was analyzed with the maximum expected benefit as the objective function. A sample of risk-ranking decision was illustrated based on updated inspection information with 35 survival age. The effect of improvement of live loads and difference of repair methods on time-dependent reliability of existing bridges are considered. The results show that the decision method can be used in real project, with the cost of failure consequence and the risk of failure considered.

关 键 词：Existing bridge Repairing and strengthening Time-dependent reliability Economical optimization risk-ranking decision 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]