公交车移动荷载作用下浅埋电力隧道结构动力响应分析  

Dynamic Response Analysis of Shallow Buried Power Tunnel Structure under Bus Moving Load

作　　者：田岗 金春峰 侯代敏 张海军 郭起林 段艳芳 TIAN Gang;JIN Chunfeng;HOU Daimin;ZHANG Haijun;GUO Qilin;DUAN Yanfang(China Electronic Engineering Design Institute Co.,Ltd.,Beijing 100142,China;C+E Center for Engineering Research Test and Appraisal Co.,Ltd.,Beijing 100142,China)

机构地区：[1]中国电子工程设计院有限公司,北京100142 [2]中电投工程研究检测评定中心有限公司,北京100142

出　　处：《工程质量》2024年第1期23-29,共7页Construction Quality

摘　　要：为研究浅埋电力隧道在公交车移动荷载作用下的结构动力响应情况,以某城市既有浅埋电力隧道为例,建立了“公交车荷载-道路-电力隧道”多元耦合动力分析模型,并对公交车移动荷载加以简化,重点分析了公交车以36、54、72 km/h三种车速情况下路面和隧道顶板的动力响应特征。结果表明,在36、54、72 km/h三种不同车速条件下,路面和隧道顶板的最大沉降量和最大振动应力幅值随车速变化的幅度较小,而它们的最大振动速度幅值和最大振动加速度幅值随车速变化的幅度较大,但整体上路面和隧道顶板的振动效应随车速提高而增长。因此,在实际工程中应加强管控高速运营公交车辆对既有电力隧道产生的不利振动影响。In order to study the structural dynamic response of shallow buried power tunnel under bus moving load,this paper takes an existing shallow buried power tunnel as an example,establishes a multi coupling dynamic analysis model of“bus load-road-power tunnel”,simplifies the bus moving load,and focuses on the dynamic response characteristics of road surface and tunnel roof under the conditions of 36km/h,54km/h and 72km/h.The results show that under the conditions of 36km/h,54km/h and 72km/h,the maximum settlement and maximum vibration stress amplitude of the road surface and tunnel roof vary slightly with the bus speed,while their maximum vibration velocity amplitude and maximum vibration acceleration amplitude vary greatly with the bus speed,but the vibration effect of the road surface and tunnel roof increases with the bus speed.Therefore,in the actual project,it is necessary to strengthen the management and control of the adverse vibration impact of high-speed operating bus on the existing power tunnel.

关 键 词：车辆荷载 道路 电力隧道 动力响应 有限元 

分 类 号：U45[建筑科学—桥梁与隧道工程]