交通荷载作用下黄土地基土压力分布规律研究  

Research on the distribution law of soil pressure in loess foundation under the action of vehicle load

作　　者：刘明 Liu Ming(Liaoning Railway Vocational and Technical College,Jinzhou Liaoning 121000,China)

机构地区：[1]辽宁铁道职业技术学院,辽宁锦州121000

出　　处：《山西建筑》2024年第10期72-75,79,共5页Shanxi Architecture

基　　金：中石油管道有限责任公司西部分公司项目资助(2019-XG11FW-011)。

摘　　要：为研究交通荷载作用下黄土地基土压力分布规律,基于某埋地管道项目现场试验,采用重载卡车以不同载重及低速工况下测得地基竖向和横向的动土压力。研究表明:在车辆荷载作用下竖向土压力随深度减小,且越深影响程度越小;动土压力沿竖向传递的能力大于沿横向传递的能力;轴载产生的动应力峰值随着地基深度的增加逐渐减小且具有滞后性。车辆在低速10km/h~30km/h区间内,速度对地基的动力效应影响不太显著。To study the distribution law of soil pressure on loess foundation under traffic loads,based on on-site tests of a buried pipeline project,the vertical and horizontal dynamic soil pressure of the foundation was measured using heavy-duty trucks under different load and low-speed conditions.Research has shown that under vehicle loads,vertical soil pressure decreases with depth,and the deeper the effect,the smaller the degree of influence.The ability of soil pressure to be transmitted vertically is greater than that to be transmitted horizontally.The peak dynamic stress generated by axial load gradually decreases with the increase of foundation depth and exhibits hysteresis.The impact of speed on the dynamic effect of the foundation is not significant for vehicles in the low-speed range of 10 km/h~30 km/h.

关 键 词：交通荷载 动土压力 现场试验 分布规律 

分 类 号：TU444[建筑科学—岩土工程]