三维振震双控支座在地铁上盖结构中的减振效果研究  

Research on Vibration Reduction Effect of Three-Dimensional Bearing for Dual Control of Subway and Earthquake-Induced Vibrations in Over-Track Buildings

作　　者：陆德成 周颖[1] 王睿[1] 马开强 王梁坤 LU Decheng;ZHOU Ying;WANG Rui;MA Kaiqiang;WANG Liangkun(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Sichuan Institute of Building Research,Sichuan 610000,China)

机构地区：[1]同济大学土木工程防灾减灾全国重点实验室,上海200092 [2]四川省建筑科学研究院有限公司,四川610000

出　　处：《结构工程师》2024年第1期11-21,共11页Structural Engineers

基　　金：国家自然科学基金杰出青年基金项目(52025083)。

摘　　要：地铁振动带来的舒适度问题已经成为地铁上盖开发的重要制约因素,对地铁上盖结构设计提出了更高的要求。三维振震双控支座可以兼顾对水平向地震和竖向地铁振动响应进行控制,在地铁上盖开发中具有重要的研究和应用价值。提出了一种基于橡胶隔震支座和碟形弹簧的三维振震双控支座,并通过原型支座试验对其竖向刚度和解耦效果进行了验证。在此基础上,以某地铁上盖结构工程项目为背景,采用现场振动测试获得的地铁振动时程作为激励,建立了三维振震双控结构模型并进行了时程分析。计算结果表明,设置三维振震双控支座后,该结构水平向隔震效果显著;竖向Z振级减小,有效提高了地铁上盖结构的舒适度。Subway-induced vibrations have become a significant constraint in the development of over-track buildings,imposing higher demands on structural design.To address this issue,researchers have explored the concept of three-dimensional bearings capable of mitigating both subway and earthquake-induced vibrations.Such dual-control bearings hold substantial research and practical value for over-track buildings'development.In this paper,the three-dimensional bearing based on rubber isolation bearing and disc spring is proposed,and its vertical stiffness and decoupling effects are verified through prototype bearing tests.On this basis,this paper takes an over-track building engineering project as the background,uses the subway vibration time history obtained by the in-situ vibration test as the excitation,establishes the isolation structure,and carries out the time history analysis.The results indicate the bearing's effectiveness in decreasing horizontal seismic vibrations.Moreover,the vertical Z vibration level can be reduced,which proves the bearing can improve the comfortability of the over-track buildings.

关 键 词：三维振震双控支座 碟形弹簧 地铁上盖结构 地铁振动 舒适度评价 

分 类 号：U231[交通运输工程—道路与铁道工程] TU352.1[建筑科学—结构工程]