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采用有限元法分析了京津城际轨道跨北京四环大桥的整体动力特性。采用反应谱法和时程反应分析法对该桥进行了地震反应分析,以期为进一步研究加劲拱连续梁桥的抗震性能,制定相应的抗震措施提供参考。
The dynamic characteristics of Beijing-Tianjin inter-city orbital cross Beijing Fourth Ring Bridge are analyzed by using finite element method. The seismic response analysis of the bridge is carried out by response spectrum method and time-history analysis method. It is expected to provide reference for further study on the seismic performance of the stiffening arch continuous beam bridge and the corresponding anti-seismic measures.