地震作用下高墩连续T形梁桥梁端碰撞分析

英文篇名：Analysis on the impact simulation between adjacent girders of a high-pier continuous T shaped-beam bridge under earthquakes
中文刊名：世界地震工程
英文刊名：World Earthquake Engineering
作者：龚万江 ; 保石才 ; 刘维娟
英文作者：GONG Wanjiang ; BAO Shicai ; LIU Weijuan(Yunnan Provincial Plan Design & Research Institute of Communications ; Kunming 650011 ; China)
中文关键词：地震 ; 高墩 ; 连续T形梁桥 ; 伸缩缝 ; 单边碰撞 ; 非线性
英文关键词：earthquakes ; high-pier ; continuous T shaped-beam bridge ; expansion joint ; one-sided impacting ; nonlinear
出版日期：2009-09-15
机构：云南省交通规划设计研究院;
年：2009
期：03
出版单位：世界地震工程

摘要

针对高墩连续梁桥伸缩缝位置处的碰撞现象,建立考虑单边碰撞空间有限元简化分析模型,采用非线性时程分析方法研究了高墩连续梁桥伸缩缝处碰撞发生的规律。总结了梁端碰撞发生时各个桥墩、台位置处梁墩相对位移及墩底内力的变化规律,以及影响梁端碰撞的因素。研究成果对同类型桥梁抗震设计时具有一定的参考价值。
Based on the impact phenomenon at expansion joints of high-pier continuous bridge during.earthquakes,a simplified analytical model with considering the effects of one-sided collision is presented by using spatial finite element method.For determining the nonlinear seismic responses,the impacting phenomenon of adjacent girders at expansion joints of the high-pier continuous bridge is studied by the time history analysis method.The variation laws of relative displacement and the internal force at the bottoms of each pier and abutment are investigated,and the influencing factors of impacting simulation between the adjacent girders are discussed.The results from the present study may serve as a reference base for seismic design of continuous bridges.

引文

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