铅芯橡胶支座在旧桥抗震加固中的应用
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摘要
针对某旧桥不满足抗震性能要求的问题,提出采用铅芯橡胶支座进行减震。以双线性模型模拟支座,并选取合适的地震波时程对桥梁下部结构进行时程分析。结果表明,E2地震下结构内力大幅削减,变形满足要求,实现了抗震加固的目标。
Aiming at the problem of an old bridge not able to meet the seismic property requirement, the lead rubber bearing is proposed to use for the seismic reduction. The bilinear model is used to simulate the bearing and the suitable seismic wave time history is selected to carry out the time history analysis of the bridge substructure. The result shows that the inner force of structure is greatly reduced in E2 earthquake and the deformation meets the requirement so as to realize the objective of seismic reinforcement.
Aiming at the problem of an old bridge not able to meet the seismic property requirement, the lead rubber bearing is proposed to use for the seismic reduction. The bilinear model is used to simulate the bearing and the suitable seismic wave time history is selected to carry out the time history analysis of the bridge substructure. The result shows that the inner force of structure is greatly reduced in E2 earthquake and the deformation meets the requirement so as to realize the objective of seismic reinforcement.
引文
[1]赵君黎.公路桥梁学科发展[A].2014年全国桥梁学术会议论文集[C].珠海:2014.
[2]江宜城,聂肃非,叶志雄,李黎.多铅芯橡胶隔震支座非线性力学性能试验研究及其显式有限元分析[J].工程力学,2008,25(7).
[3]张辉,戴公连.武广高速铁路陈村水道特大桥地震响应及支座优化研究[J].城市道桥与防洪,2008,(7).
[4]吴彬,庄军生,臧晓秋.铅芯橡胶支座的非线性动态分析力学参数试验研究[J]工程力学,2004,21(5).
[2]江宜城,聂肃非,叶志雄,李黎.多铅芯橡胶隔震支座非线性力学性能试验研究及其显式有限元分析[J].工程力学,2008,25(7).
[3]张辉,戴公连.武广高速铁路陈村水道特大桥地震响应及支座优化研究[J].城市道桥与防洪,2008,(7).
[4]吴彬,庄军生,臧晓秋.铅芯橡胶支座的非线性动态分析力学参数试验研究[J]工程力学,2004,21(5).
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