地铁列车引起的振动对城市敏感建筑结构的影响  

Effect of train-induced vibration on the sensitive structure in city

作　　者：匡健 王明斌[2,3] 张波[4] 张敦福[4] 

机构地区：[1]广东省建东工程监理有限公司,广东广州510500 [2]鲁东大学土木工程学院,山东烟台264025 [3]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [4]山东大学土建与水利学院,山东济南250061

出　　处：《山东大学学报（工学版）》2013年第6期72-76,共5页Journal of Shandong University（Engineering Science）

基　　金：国家自然科学基金资助项目(51279095;51379114);山东省自然科学基金资助项目(ZR2012EEM010);水资源与水电工程科学国家重点实验室开放基金资助项目(2012B104);山东省高校科技计划资助项目(J11LE03)

摘　　要：以某相对地铁线路水平距离较近的市级文物保护敏感建筑为研究对象,设线路时速70 km/h,分析地铁列车运行时产生的振动对该建筑结构的动力影响。针对整体道床和橡胶减振垫浮置板道床,建立车辆-轨道耦合模型,采用Newmark方法计算列车载荷;建立轨道-土层耦合模型,利用有限元方法分析地铁列车引起的振动在地表面的传播特性,并计算地铁列车振动对敏感建筑结构及周围环境的影响。研究结果表明:采用整体道床时,敏感点的垂向Z振级和敏感建筑结构的水平速度都大于标准值;采用橡胶减振垫浮置板道床时,敏感点的垂向Z振级和敏感建筑结构的水平速度都低于标准值;同时说明橡胶减振垫浮置板道床具有很好的减振效果。For the monolithic track bed and rubber floating slab track bed, the vehicle-track coupling model was estab- lished, and the train loads were calculated by Newmark method. Then the track-soil coupling model was established, the propagation characteristics on surface of metro vehicle-induced vibration was analyzed, and the effect of metro vehi- cle-induced vibration on the sensitive structure was studied by the finite element method. The results showed that the vertical Z vibration level of sensitive point and the horizontal vibration velocity of sensitive structure were bigger than the standard values respectively under monolithic track bed, which were lower than the standard values respectively under rubber floating slab track bed. The results also showed that the damping effect of the rubber floating slab track bed was very good.

关 键 词：敏感建筑结构 整体道床 橡胶减振垫浮置板道床 有限元法 结构振动速度 垂向Z振级 

分 类 号：TU435[建筑科学—岩土工程]