中文摘要：

将一种新型的高阻尼橡胶减隔震支座应用在连续梁桥上,以桥墩及桩基抗弯能力和支座位移等性能指标为研究对象,基于数值模型,着重分析非规则混凝土连续梁桥纵桥向的减隔震性能。为使全桥结构的地震需求规则化、均匀化,根据数值分析结果,优化了非规则连续梁桥的减隔震支座设计参数和布置方案,采用连梁装置和纵向限位挡块解决隔震产生的大位移,并对桩基础的设计方案进行了探讨。连续梁桥的减隔震设计兼顾了抗震性能和经济性的总体需求。计算模型考虑了场地土体刚度、支座非线性以及限位挡块的碰撞等,分析结果表明高阻尼橡胶支座具有较好的减隔震性能。

英文摘要：

A kind of innovative high damping rubber isolation bearing is applied on a continuous girder bridge. Taking the flexuary capacity of piers and piles as well as displacements of bearings as the research objects, the seismic isolation performance along the longitudinal direction of an irregular concrete continuous girder bridge is emphasized based on numerical model. To regularize and unify the seismic demands of the whole bridge system, various design parameters and layout of the isolators of the bridge are optimized according to the FEM result. The unseating device and restraining block are adopted to reduce the large seismic displacement of girder due to isolation design, and the design scheme of the pile foundation is also discussed. The balance between seismic performance and economy is considered in the final isolation seismic design. The effects of field soil stiffness, nonlinearity of beargings and collision of restraining blocks are considered in the calculation model. The analysis result shows that high-damped rubber bearing is a kind of highly effective isolation device.