【摘要】 以穗盐路特大铁路桥为对象,对安装E型钢阻尼支座的独塔双索面曲线铁路斜拉桥的抗震性能进行了研究。建立了斜拉桥的动力有限元模型之后,考虑两种地震水平力的作用,采用反应谱法和非线性动力时程分析法对斜拉桥的抗震性能做了数值分析。研究表明,横向约束销钉剪断后,安装了E型钢阻尼支座的桥梁结构的地震内力响应相比无减震体系有较好的改善,且桥梁各代表截面及桩基础内力等的抗震验算均满足相应的抗震性能要求。更多还原

【Abstract】 The E type steel damper bearing was added to the Huiyan road railway bridge with signle tower and double cable plane.In this study,how the seisemic performance of Huiyan road railway bridge was improved by added the E type steel damper is studied.Based on the dynamic finite element model of the cable-stayed bridge,the seismic performance of the bridge are analyzed in terms of response spectrum method and nonlinear dynamic analysis method,where two levels of earthquake forces are considered.Research results show that,if ignoring the impaction of the lateral constrained pins after their destruction,the installation of E type steel damper bearing shall improve the seismic performances of the bridge structure compared to system without added damping,and for the representative sections of the bridge and the internal forces of the pile foundations,their seismic performance requirements are satisfied.更多还原