大跨度连续刚构桥抗震响应特性评估研究  

Evaluation on Seismic Characteristics of Long-span Continuous Rigid Frame Bridge

作　　者：张清平 张德海 

机构地区：[1]中国市政工程中南设计研究总院,湖北武汉430010

出　　处：《公路工程》2011年第5期77-79,85,共4页Highway Engineering

摘　　要：为判断已建桥梁结构的抗震特性,迭代拟合了规范反应谱对应的人工加速度时程。分别采用反应谱法及时程分析方法对运营期大跨度连续刚构桥进行了E1级及E2级抗震特性研究,研究结果表明:本桥地震响应低阶参与振型与地震动峰值对应卓越频率值并不吻合,本桥在E1及E2地震作用下,墩身及主梁结构响应值较小,地震动作用下不会发生桥梁碰撞特征。To evaluate the seismic characteristics of the already built bridge , the Artificially acceleration schedule is fitted iteratively based on Standard response spectrum. The E1 degree and E2 degree seismic characteristics of the continuous rigid frame bridge within operation period are researched by response spectrum method and time-history method. The research indicate：the seismic response of loworder participation mode of this bridge is not agree with the ground motion peak corresponding excellence frequency, so the piers and girder structure response value is lesser, the action of collision characteristics will not happen under the earthquake.

关 键 词：连续刚构桥 抗震响应 反应谱法 时程分析法 评估 

分 类 号：TU311.3[建筑科学—结构工程] U448.23[建筑科学—桥梁与隧道工程]