汶川地震回澜立交桥震害成因分析
发布时间：2018-07-05 16:03
本文选题：汶川地震 + 回澜立交桥 ； 参考：《振动与冲击》2014年12期
【摘要】：绵竹市回澜立交桥为典型的小曲率半径梁桥,在汶川地震中该桥桥墩普遍出现塑性铰压溃破坏。基于对回澜立交匝道桥的震害情况调查,建立桥梁三维动力数值模型,进行了动力特性及动力时程分析,在时程分析中考虑了材料弹塑性、边界碰撞效应以及支座滑移效应等关键非线性因素,并研究了各因素对桥梁地震动响应的影响,最后,基于定性与定量分析的结论,得到了回澜立交匝道桥的震害成因。
[Abstract]:Huilan overpass in Mianzhu City is a typical beam bridge with small radius of curvature. Based on the investigation of earthquake damage of Huilan interchange ramp bridge, a three-dimensional dynamic numerical model of the bridge is established, and the dynamic characteristics and dynamic time-history analysis are carried out. The elastic-plastic material is considered in the time-history analysis. Some key nonlinear factors, such as boundary collision effect and support slip effect, are studied. Finally, based on the qualitative and quantitative analysis, the causes of earthquake damage of Huilan interchange ramp bridge are obtained.
【作者单位】： 林同h旯使こ套裳，
本文编号：2100818
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