LRB隔震渡槽结构地震响应的简化计算方法  

Simplified Computational Method for Seismic Response of LRB-isolated Aqueduct

作　　者：叶昆[1] 符蓉[2] 李黎[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]华中科技大学文华学院城建学部,湖北武汉430074

出　　处：《土木工程与管理学报》2011年第3期119-123,共5页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(51008134)

摘　　要：为探究采用铅芯橡胶隔震支座的大型渡槽结构地震响应的简化分析计算方法,本文针对某大型隔震渡槽进行了7度顺槽向地震响应分析。比较了双质点双线性模型、单质点双线性模型、改进后的单质点双线性模型和有限元模型的计算结果。分析了槽墩刚度、阻尼比对计算结果的影响。分析计算表明改进后的单质点双线性模型计算简便并能够满足精度要求,可以运用于实际工程的初步设计中。In order to simplify the computational methods for seismic response of LRB-isol ated aqueduct structure,different computational methods are compared in the cou rse of conducting seismic response analysis of one large LRB-isolated aqueduct d esigned according to Intensity 7.These methods consist of 2DOF combined with bi linear model,1DOF combined with bilinear model,improved 1DOF combined bilinear model and finite model.Effect of damping and stiffness of piers on the numeric al results are investigated.It is shown that the mothod of improved 1DOF combin ed bilinear model is the easiest and can meet the accuracy of engineering demand.

关 键 词：铅芯橡胶隔震支座 渡槽结构 双线性模型 

分 类 号：TU352.12[建筑科学—结构工程] TU311.4