随机地震动场多点激励下大跨度桥梁地震反应分析方法  

Methods of seismic response analysis for long-span bridges under multi-support excitations of random earthquake ground motion

作　　者：史志利[1] 李忠献[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《地震工程与工程振动》2003年第4期124-130,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金资助项目(50178047)

摘　　要：地震输入问题一直是工程结构抗震研究关注的焦点。对大跨度桥梁结构,考虑随机地震动场的多点激励而进行地震反应分析较为合理。本文结合大跨度桥梁抗震设计,系统地介绍了随机地震动场的模型以及随机地震动场多点激励下大跨度桥梁地震反应分析的方法。Earthquake input pattern is a principal focus in the research on earthquake-resistance of engineering structures. For long-span bridges, a rational method for seismic response analysis should be developed considering the multi-support excitations of random earthquake ground motion. In this paper, based on earthquake-resistant design of long-span bridges, the patterns of random earthquake ground motion and the methods of seismic response analysis for long-span bridges under multi-support excitations of random earthquake ground motion are presented systematically.

关 键 词：大跨度桥梁 随机地震动场 多点激励 地震反应分析 地震输入 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] P315.9[交通运输工程—道路与铁道工程]