考虑钢筋锈蚀的震损结构抗震性能评估  

Seismic Performance Evaluation of Earthquake Damaged Structures Considering Rebar Corrosion

作　　者：张宇[1] 李宏男[1] 李钢[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《建筑科学与工程学报》2011年第4期97-105,共9页Journal of Architecture and Civil Engineering

基　　金："十一五"国家科技支撑计划重大项目(2006BAJ03A03-09);国家自然科学基金重大研究计划项目(90815026);地震行业科研专项项目(200808074);高等学校学科创新引智计划项目(B08014)

摘　　要：提出了考虑钢筋锈蚀的震损结构抗震性能评估方法,分析了钢筋混凝土结构考虑钢筋锈蚀因素及地震作用后结构抗震性能的变化;通过数值算例获得了考虑钢筋锈蚀的震损结构的能力谱曲线,并与完好结构的能力谱曲线进行对比,验证了该方法的有效性及实用性。结果表明:钢筋锈蚀及地震损伤对钢筋混凝土结构抗震性能影响较大,对震损结构进行考虑钢筋锈蚀因素的抗震性能评估是十分必要的。A method of evaluating the seismic performance of an earthquake damaged structure considering the influence of rebar corrosion was proposed, and the changes in structural seismic performance of the reinforced concrete structure considering rebar corrosion and earthquake action were analyzed. Through a numerical example, the validity and feasibility of this method were verified; then, the capacity spectrum curves of the damaged structure were got, after contrasting this capacity spectrum curves to those of a perfect structure. Results show that there is a great influence caused by earthquake damage and rebar corrosion on the seismic performance of the reinforced concrete structure. The seismic performance evaluation of an earthquake damaged structure considering rebar corrosion is necessary.

关 键 词：钢筋锈蚀 震损结构 抗震性能评估 时程 静力弹塑性分析 能力谱 

分 类 号：TU973.31[建筑科学—结构工程]