荆岳长江大桥结构体系减震效能分析  

Seismic Reduction Efficiency Analysis on Structural System of JingYue Yangtze River Bridge

作　　者：干学军[1] 丁望星[1] 

机构地区：[1]湖北省交通规划设计院,武汉430051

出　　处：《建材世界》2011年第5期95-100,共6页The World of Building Materials

摘　　要：荆岳长江大桥主桥为主跨816m双塔不对称混合梁斜拉桥,滩桥为主跨154m的七跨连续预应力混凝土梁桥;大桥抗震设防标准为8级;主要对抗震设防标准、性能目标和输入地震动参数、减震耗能装置进行研究;建立动力分析模型,采用反应谱和线性和非线性时程分析方法分析了主桥不同约束状态下的地震响应,以及大桥结构体系的减震效能,验证减震结构体系的合理性。The main bridge of JingYue Yangtze river bridge is a asymmetric hybrid girder cable-stayed bridge with a main span 816 m.The beach land bridge is a prestressed concrete continuous girder with a main span of 154 m.Seismic fortification criterion of the bridge is 8 grade.In this paper,seismic fortification criterion,performance objective,ground motion parameter and damping device are researched.The dynamic analysis model is set up,using reaction spectrum analytical method and time history analytical method to analyze seismic response of the main bridge in different restricted states,and seismic reduction efficiency of the structural system,verify the reasonableness of damping structural system.

关 键 词：斜拉桥 减震 反应谱 时程分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]