施工车辆荷载对低路堤软土地基的影响深度分析

为了分析施工车辆荷载在低路堤软土地基中的分布规律与影响深度，本文通过预埋在天津滨海新区西 外环高速公路低路堤及软土地基中的动土压力盒，进行了不同工况下的动土压力测试，系统分析了施工车辆 轴载、行车速度对不同深度处动土压力的影响规律，以及轴载、车速对施工车辆作用深度的影响规律，结果 表明，动土压力峰值随着轴载、行车速度的增大而显著增大，随着埋置深度的增大而减小；施工车辆荷载的 影响深度随着轴载、行车速度的增大而显著增大，考虑超载的情况下，施工车辆荷载的影响深度可达3.0m， 需要在低路堤设计中充分考虑.
Inordertoinvestigatethedistributionlawandinfluentialdepthofconstructionvehicleloadinlowembank? mentsoftsubsoil,dynamicsoilpressureunderdifferentconditionsusingdynamicearthpressurecellsembeddedinthe lowembankmentandsoftsubsoilofTianjinBinhaiNewAreawestringexpressway.Theinfluentiallawofconstruction vehicleaxleloadsandspeedonthedynamicsoilpressureofdifferentdepthwerestudied.Constructionvehicleaxle loadsandspeedontheinfluentialdepthwerestudied,too.Theresultsshowthatthemaximumdynamicsoilpressure wouldincreasewiththeincreaseofaxleloadandvehiclespeed,anddecreasewiththeincreaseofthedepth.Theinfluen? tialdepthofconstructionvehicleloadwouldincreasesignificantlywiththeincreaseofaxleloadandvehiclespeed.The influentialdepthofconstructionvehicleloadinlowembankmentsoftsubsoilisabout3.0monconsidersoverloading. Theseneedtobefullyconsideredinthelowembankmentdesign.