期刊论文

Study on the deformation characteristics of integrated pipe gallery under vehicle load

中文

建筑结构

1002-848X

2019

A01

845-849

10.19701/j.jzjg.2019.S1.180

本校为第一机构

为研究城市综合管廊在车辆荷载作用下的变形特性,建立了综合管廊-路基土-车辆荷载有限元模型,并通过数值模型计算与实测结果对比分析,探讨了行车速度、车辆荷载加载位置对综合管廊顶板位移的影响规律。研究表明,车辆动载作用下管廊会产生明显的动位移,以行车速度60km/h为例,其增量幅值为静载作用的33.10%,加载6s后管廊振动趋于平稳;跨度最大舱中跨中位置竖向位移最大,沿顶板向两侧减少;车速越小,管廊顶部的竖向位移越大;存在最不利加载位置,即当车辆荷载位于管廊边侧墙正上方时,管廊顶板左右侧竖向位移差最大,达到了4.46mm,在综合管廊设计和施工中应引起注意。

In order to rearch urban intergrated pipe gallery under traffic load,the finite element model of the intergrated pipe gallery-roadbed soil-vehicle load was established,and the influence law of the traffic speed and the loading position of the vehicle on the displacement of the roof of the intergrated pipe gallery was discussed through the comparison between the numerical model calculation and the measured results.The study shows that the tube gallery can produce obvious dynamic displacement under the action of vehicle dynamic load.Taking 60 km/h driving speed as an example,its incremental ampl...