汶川地震中高原大桥落梁破坏分析

英文篇名：An analysis on unseating damage of Gaoyuan Bridge during Wenchuan Earthquake
中文刊名：苏州科技学院学报(工程技术版)
英文刊名：Journal of Suzhou University of Science and Technology(Engineering and Technology)
作者：赵闯 ; 丁海平
英文作者：ZHAO Chuang1 ; DING Haiping1 ; 2(1.Jiangsu Provencal Key Laboratory of Structure Engineering ; Suzhou 215011 ; China ; 2.Institute of Engineering Mechanics ; China Earthquake Administration ; Harbin 150080 ; China)
中文关键词：高原大桥 ; 落梁 ; 碰撞
英文关键词：Gaoyuan Bridge ; unseating of the bridge girders ; pounding
出版日期：2012-12-15
机构：江苏省结构工程重点实验室;中国地震局工程力学研究所;
年：2012
期：04
出版单位：苏州科技学院学报(工程技术版)

摘要

结合实际震后现象对高原大桥的落梁破坏进行模拟分析,对震后落梁现象提出了一个新的解释,即认为地震过程中高原侧桥台后土体先发生破坏,在失去土体的支撑作用下桥台背墙在与邻梁的碰撞中被撞碎并被顶入土体中,从而引起墩台处的墩(台)梁位移增大,并最终导致落梁破坏的发生。
Unseating of Gaoyuan Bridge girders is studied based on the unseating phenomenon during the Wenchuan Earthquake.As to the unseating of the bridge girders after an earthquake,the paper presents a new perspective that the soil behind Gaoyuan abutment is seriously damaged during earthquake;without the support of soil,the abutment breast wall is sundered during the pounding and then is pushed into the soil.This causes a larger relative displacement of the bridge girders to the piers,leading to the unseating damage of girders in the end.

引文

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