【摘要】 考虑了铅芯橡胶支座的非线性特性和桥梁结构的相互影响 ,并在建立有限元铁路连续梁桥全桥动力分析模型的基础上 ,采用了时程分析的方法 ,对不同地震输入激励条件下的铁路连续隔震桥梁的动力响应及参数影响规律 ,进行了计算研究 ,取得了一些有实用价值的结果 ,为铁路连续梁桥的减隔震设计 ,提高桥梁结构的抗震安全性提供了科学依据和重要参考。更多还原

【Abstract】 Considering the interaction between nonlinear characteristic of lead cored rubber buffer and the bridge structure, and based on the establishment of the model of dynamic analysis of finite element on continuous beam bridge, the dynamic response of vibration absorption and isolation and its impact on parameters under the excitation of various seismic input are calculated by time history analysis. Some valuable results are obtained, which provide the meaningful reference for the design of vibration absorption and isolation of the continuous beam bridge.更多还原