(1 昆明理工大学建筑工程学院， 昆明650500； 

2 云南睿德道路桥梁工程设计有限公司， 昆明 650500）

［摘要］为研究LNR水平力分散型橡胶支座的抗震性能，以云南某桥为实际工程背景，运用有限元分析软件建立有限元模型，对水平力分散型橡胶支座、铅芯橡胶支座和抗震盆式橡胶支座进行了非线性动力时程分析比较。分析表明：使用水平分散型橡胶支座可延长结构的周期，减小结构地震动响应；水平分散型橡胶支座可以使桥梁下部结构水平力分散，各墩协同抵抗地震水平力作用，使内力分配更加合理；研究结果对非规则桥梁在E2地震作用下支座的设计，具有一定的指导意义。

［关键词］桥梁； 抗震性能； 水平力分散型橡胶支座； 减隔震； 动力时程分析 

中图分类号： U442.5+5，TU352 文献标识码： A文章编号：  1002-848X(2016)S2-0300-05

Study on seismic performance of bridge bearings based on nonlinear time-history analysis

Deng Junlei1, Li Rui1, Yang Jingjing2

(1 Faculty of Civil and Engineering, Kunming University of Science and Technology, Kunming 650500, China；

2 Yunnan Rui De Road and Bridge Engineering Design Limited Company， Kunming 650500, China)

Abstract: In order to research the seismic performance of LNR horizontal force distributed ubber bearings, taking a bridge in Yunnan as the practical engineering background, using the finite element analysis software to build finite element, horizontal force dispersible rubber bearings, lead rubber bearings and seismic pot rubber bearing were compared with the nonlinear dynamic time history analysis. Analysis shows that the usage of horizontal force dispersible rubber bearings can prolong the cycle, reduce seismic response of the structure. Horizontal force dispersible rubber bearings can scatter the horizontal force of bridge foundation, the pier synergy to resist seismic horizontal force, which make the internal force distribution more reasonable. The results have certain guilding significance for the design of the bearings of the irregular brdge under E2 earthquake action.

Keywords: bridge; seismic performance; horizontal force dispersible rubber bearing; seismic isolation; dynamic time history analysis

作者简介： 邓俊雷，硕士研究生，工程师，Email:401322258@qq.com。

*国家自然科学基金项目（KKGD201506103）。