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工程科学与技术:2015,47(6):54-60
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基于行波效应飞燕式钢管混凝土拱桥地震分析
(大连理工大学)
基于行波效应飞燕式钢管混凝土拱桥地震分析
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投稿时间:2015-03-24    修订日期:2015-07-20
中文摘要: 为研究大跨度飞燕式钢管混凝土拱桥在地震行波效应作用下损伤,以主跨280m飞燕式钢管混凝土拱桥为桥梁样本,以台湾集集地震动记录作为地震样本,采用数值模拟方法,对桥梁样本在地震动样本作用下损伤进行了研讨。为使行波效应在桥梁样本上更为显著,地震动样本选取含有较高长周期脉冲的近断层地震记录。结果表明:在一致地震作用下,桥梁样本满足设计抗震要求;在计入行波效应下,桥梁样本不能很好的符合“小震不坏”的设计原则;总体来说计入行波效应桥梁损伤会增加21%左右。
Abstract:In order to research structural seismic damage performances of long-span fly-swallow type concrete-filled steel tubular arch bridge under traveling wave effect, an arch bridge with a 280 main span was taken as a bridge sample. Seismic records of the Chi-Chi earthquake in Taiwan were taken as ground motion samples. The numerical analysis was adopted to study the seismic damage of the bridge sample under the ground motion samples. In order to make the traveling wave effect more obvious on the bridge sample, near-fault earthquake records with long-periodic pulse were selected as ground motion samples. The research result shows that the seismic design requirement is met under the identical support seismic excitation; the seismic resistance regulation’ No Damage With Weak Earthquake’ is not satisfied under multi-support seismic excitation. In a word the bridge damage increase about 21% included in the traveling wave effect.
文章编号:201500263     中图分类号:    文献标志码:
基金项目:钢管混凝土核心柱组合桥墩的抗震性能研究
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liuzhen  liuzhen1988@mail.dlut.edu.cn 
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刘震.基于行波效应飞燕式钢管混凝土拱桥地震分析[J].工程科学与技术,2015,47(6):54-60.
liuzhen.基于行波效应飞燕式钢管混凝土拱桥地震分析[J].Advanced Engineering Sciences,2015,47(6):54-60.