震区曲线匝道连续梁桥下部结构抗震性能研究

Study on Seismic Behavior of Lower Curve Continuous Beam Bridge in Seismic Region

以某震区曲线匝道连续梁桥为研究对象,通过Midas Civil有限元分析软件对该桥建立空间有限元分析模型,依据《公路桥梁抗震设计细则》(JTG/T B02-01-2008)中相关规定,应用反应谱法分析了该桥的自振特性,对该桥在E1和E2地震作用下的受力进行了分析,并且比较了E1和E2作用下墩桩受力,最后对该桥下部结构的抗震性能进行了校核。

With a curved ramp in the earthquake region of the continuous beam bridge as the research object, establish space finite element analysis model of the bridge with Midas finite element analysis software Civil, based on the ＂guidelines for seismic design of highway bridges＂ （JTG/T B02 - 01 - 2008） in the relevant provisions of the analysis of the vibration characteristics of the bridge using the response spectrum method, the the bridge at E1 and E2 under seismic loading are analyzed, and the comparison of El and E2 under the effect of pier pile stress, the seismic performance of the bridge substructure were checked.