结构工程师2024，Vol.40Issue(2)：91-100,10.
隔震支座布置对地铁上盖多塔楼隔震结构的抗震性能影响分析
Analysis of Impact of Arrangement of Isolation Bearing on Seismic Behavior of Isolated Multi-Tower Structures with Large Base on Subway
摘要
Abstract
The stiffness distribution of the isolation story and the isolation effect are badly influenced by arrangement of isolation bearings.Based on the stiffness ratio and eccentricity ratio of the lead rubber bearing,the arrangement of the isolation bearing was determined.The effect of different arrangement of the isolation bearing on the seismic response of the isolated multi-tower structures with large base on the subway was studied.The variation law of seismic decrease coefficient,floor acceleration,inter-story drift,floor displacement and floor shear of isolated structure was studied.The results showed that when stiffness ratio of the lead rubber bearing varied within a certain range,the seismic decrease coefficient of isolation story and superstructure increased,the floor acceleration,floor displacement,inter-story drift and floor shear of isolation story and superstructure decreased.For the substructure,the seismic decrease coefficient and floor shear increased,while the floor acceleration and inter-story drift decreased,and the floor displacement was almost constant.When eccentricity changed within a certain range,the seismic decrease coefficient and floor acceleration of isolation story and superstructure increased,while the floor displacement,inter-story drift and floor shear of isolation story and superstructure decreased.For the substructure,the damping coefficient increased,the inter-story drift and floor shear decreased.Floor acceleration and floor displacement were almost constant.关键词
地铁上盖开发/多塔楼结构/隔震结构/铅芯橡胶支座刚度比/偏心率Key words
development and utilization above subway/multi-tower structures/seismic isolation structures/stiffness ratio of lead rubber bearing/eccentricity ratio引用本文复制引用
张永强..隔震支座布置对地铁上盖多塔楼隔震结构的抗震性能影响分析[J].结构工程师,2024,40(2):91-100,10.基金项目
中铁第一勘察设计院集团有限公司科技创新项目(19-59) （19-59）
