公路桥梁抗震设计方法及实例分析  

The Analysis of Highway Bridge Seismic Design Method and Examples

作　　者：翟晓春[1] ZHAI Xiao-chun(Shanxi Transportation Research Institute, Taiyuan, Shanxi 030006, Chin)

机构地区：[1]山西省交通科学研究院,山西太原030006

出　　处：《山西交通科技》2017年第2期59-62,共4页Shanxi Science & Technology of Transportation

摘　　要：基于公路桥梁抗震设计要点及常用抗震设计方法,以某连续刚构桥为依托,通过数值计算对桥梁结构自振特性、不同等级地震作用下的桥梁结构响应进行了分析,阐述了桥梁抗震设计方法的应用过程。研究表明:该桥在E1及E2地震动作用下,主结构均处于弹性工作状态,主结构强度满足抗震设计需求;矮墩受力更为不利,针对类似桥梁,需要更为关注矮墩的抗震性能;该桥在E2地震作用下,主梁的位移略大于伸缩缝的最大伸缩量,建议进一步优化伸缩缝选型。Based on the key points and common seismic design methods of highway bridge seismic design,taking a continuous rigid frame bridge as an example, through the numerical calculation, this paper analyzed the natural vibration characteristics of the bridge structure, the bridge structure response under different seismic action, and also expounded the application process of bridge seismic design method, which provided reference for the similar highway bridge seismic design in the future.

关 键 词：连续刚构 抗震设计 动力响应 反应谱分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]