综合管廊施工荷载对邻近地铁隧道影响分析

Analysis of the Influence of Construction Load of the Utility Tunnel on Adjacent Subway Tunnels

以江苏省徐州市泉润大道综合管廊工程为背景,建立了三维数值模型,分别以不同施工应力模拟变量分析了综合管廊施工荷载对邻近地铁隧道的影响规律,探讨了综合管廊施工中的大型机械行驶以及存放集中应力对地铁隧道管片的影响,提出了详细的监测方案,对结构的预警值和限制值提出了一定的要求,最后对综合管廊上穿地铁隧道施工进行了模拟计算,并与实测数据进行了对比分析,验证了数值模拟的可靠性。

Based on the utility tunnel project of Quanrun Avenue in Xuzhou City,Jiangsu Province,a 3D numerical model was established.The influence law of the construction load on the adjacent subway tunnel was analyzed by different construction stress simulation variables.The influence of large machinery running and stored concentrated stress on the tube segments of the subway tunnel was discussed during the construction.A detailed monitoring scheme was proposed.Some requirements were put forward for the early warning value and limit value of the structure.Finally,a simulation calculation was carried out for the construction of the subway tunnel crossing the integrated pipe corridor,and the reliability of the numerical simulation is verified by comparing with the measured data.