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中文摘要：
根据隔震曲线梁桥的特点,利用两个正交的非线性水平弹簧单元来模拟铅芯橡胶支座的双向非线性特性,基于大型有限元分析软件SAP2000,选取强震记录作为地震输入,考虑了曲线梁桥自身特性的影响,建立了隔震与无隔震曲线梁桥的空间有限元模型,并进行了双向地震动作用下的地震响应分析.结果表明：铅芯橡胶支座不仅可以有效地降低曲线梁桥的地震响应,还有助于减少曲率半径对曲线梁桥地震响应的影响.为曲线梁桥减隔震设计的深入和桥梁结构抗震安全性的提高提供了依据和参考.
英文摘要：
According to the characteristics of seismically isolated curved beam bridge,the bidirectional nonlinear behavior of lead rubber bearing is taken into account by using two orthogonal nonlinear spring element.Based on FEA software SAP2000,reasonable strong seismic motion records are selected and the dimensional FEA models of curved beam bridges with and without lead rubber bearing are established.Considering the effect of characteristics of curved beam bridge,the time history analysis under bidirectional seismic motions are finished.The results show that the seismic response of curved beam bridge and the influence of curvature radius can be reduced by using lead rubber bearing.So,some meaningful references are provided for the design of vibration absorption and isolation of the curved beam bridge in this paper.
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Solution of Moving-load Induced Soil Vibrations Based on the Betti-Rayleigh Dynamic Reciprocal Theor
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