罕遇地震作用下某大跨度钢桁架拱桥抗震分析  

Seismic Analysis of a Large Span Steel Truss Arch Bridge under Rare Earthquake

作　　者：陈丽军 贺金龙[2] 孙福维 张茂会 

机构地区：[1]武汉市政工程设计研究院有限责任公司,430023 [2]西南交通大学土木工程学院,成都610031

出　　处：《特种结构》2014年第3期61-64,共4页Special Structures

摘　　要：怒江特大桥主桥为主跨490m的上承式钢桁架拱桥,由于桥位处抗震设防烈度要求较高,又是跨越怒江的特大型桥梁,其抗震性能尤为重要。本文结合怒江特大桥的抗震设计,从地震输入、地震响应计算等方面研究钢桁拱桥的抗震性能,计算结果已被该桥的设计使用。The main bridge of the Nujiang Grand Bridge is a deck steel trussed arch bridge with a span of 490 meters, the seismic behavior of the bridge is particularly important because of the requirement of seismic fortification intensity and the long-span of it. Combining the seismic design of the bridge, a research on the seismic behavior of the steel trussed arch bridge in many aspects, such as the earthquake input, seismic responses and so on was made in the paper. The results have been used for the design of the bridge.

关 键 词：钢桁架拱桥 动力特性 反应谱 时程分析 抗震设计 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]