多跨连续刚构桥地震响应时程分析  

Time History Analysis of Seismic Response of Multi Span Continuous Rigid Frame Bridges

作　　者：张戈[1] 武井祥 ZHANG Ge;WU Jingxiang(School of Civil Engineering,Xiangtan University;School of Mechanical Engineering and Mechanics,Xiangtan University)

机构地区：[1]湘潭大学土木工程学院 [2]湘潭大学机械工程与力学学院

出　　处：《广东建材》2024年第1期94-98,共5页Guangdong Building Materials

摘　　要：桥梁直接关系到交通体系的命脉,在整个交通工程中占重要地位。而连续刚构桥梁又因其跨越能力出众,施工容易,行车性能好,维护方便等诸多优势,成为一种常见的桥型。中国地震活动频繁,因此,对桥梁进行的抗震响应分析,用于提高桥梁的抗震能力,可以更好地满足桥梁的稳定性能。基于此,本文介绍了地震灾害对桥梁的危害性,连续刚构桥结构特点,并以淮河大桥为背景,通过建立ANSYS有限元模型,对该模型分别输入EL-CENTRO波和模拟地震波,比较分析结果,给出研究的结论。本文研究成果可为大跨度连续刚构桥的抗震设计提供参考。Bridges are directly related to the lifeline of the transportation system and play an important role in the entire transportation engineering.The continuous rigid frame bridges has become a common type of bridge due to their outstanding crossing ability,easy construction,good driving performance,and convenient maintenance and many other advantages.Due to frequent seismic activities in China,seismic response analysis of bridges can be used to improve their seismic capacity and better meet the stability performance of bridges.Therefore,this research introduces the harm of earthquake disasters to bridges and the structural characteristics of continuous rigid frame bridge.The ANSYS finite element model was established with the Huaihe River Bridge as the background.The established model was inputted with EL-CENTRO waves and simulated seismic waves,and the analysis results were compared to provide a conclusion for the research.The research results of this article can provide reference for the seismic design of large-span continuous rigid frame bridges.

关 键 词：连续刚构桥 EL-CENTRO波 抗震分析 有限元 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]