上承式大跨度钢箱无铰拱桥地震响应分析  

Seismic Response Analysis of Deck Type Large Span Steel Box Hingeless Arch Bridge

作　　者：王伟 许晨夜 WANG Wei;XU Chenye(CCCC Second Highway Consultants Co.,Ltd.,Wuhan,Hubei 430000,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430000

出　　处：《黑龙江交通科技》2024年第9期127-130,137,共5页Communications Science and Technology Heilongjiang

摘　　要：根据桥梁所在位置的场地情况,分别在E1、E2地震作用下选择出与场地相适应的反应谱及人工合成相应地震波时程曲线,然后建立迈达斯全桥模型,分别用反应谱法及时程分析法研究拱桥结构在E1、E2地震作用下的地震响应情况。结果表明在两水准下拱肋均处于安全状态,但拱上墩柱受力有一定的差异,且线性时程分析法的计算结果比反应谱法的计算结果大80%左右。According to the location of the bridge,the selection of E1 and E2 earthquakes and the corresponding seismic time curve,and then establish the whole bridge finite element model,and use the reaction spectrum method to study the seismic response of the arch bridge structure in E1 and E2 earthquakes.The results show that the arch ribs are in a safe state in both levels,and the result of the linear time history analysis is about 80%larger than that of reaction spectroscopy.

关 键 词：大跨度 无铰拱桥 反应谱 时程分析 时程曲线 地震响应 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]