Dynamic Reliability Analysis on Arch Dam by Considering Random Elastic Modulus
Due to the massive volume of body and complex structure, the dynamic reliability analysis on arch dam under earthquake action draws more attention.In this paper calculated seismic dynamic action on arch dam by applying mode superposition response spectrum method.By taking the elastic modulus of the dam concrete and the rock foundation beneath the dam, and concrete tensile and compressive strength as random variables, adapting response surface method to establish limit state equation.The reliability index of each element in the dam was calculated via gradient optimization method, as a result to obtain the variation law of reliability index of dam body.The calculation of real case shows that the tensile index is comparatively low at some region of dam heel and abutment upstream, which requires the measure for aseismic measures, while the reliability index for tensile and compressive stress on other part of dam generally meets requirement.
Arch dam Elastic modulus Response surface method Response spectrum Dynamic reliability
Chen Hongjie Wu Qingxi Zhen Hongfeng
College of Civil and Communication,Hohai University,Nanjing,Jiangsu 210098,China College of Mechanics and Material,Hohai University,Nanjing,Jiangsu 210098,China Shandong Water Polytechnic,Rizhao,Shandong 276826,China
国际会议
上海
英文
931-936
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）