摘要
试验以阿拉山口市温泉县G30公路建设项目为依托,通过数值模拟方法,建立设置反h型桩的陡坡路基典型数值模型。研究在车辆行驶过程中对陡坡路基造成的影响因素,其中主要分析了在不同车辆行驶速度、载荷及数量对陡坡的影响。通过ABAQUS有限元试验,结果表明:一辆空载汽车以20 m/s的行驶速度行驶下对陡坡路基的影响效果最小,陡坡路基所受应力应变及加速度均处于最小;当三辆满载汽车以28 m/s的行驶速度在该段路面行驶时,汽车对陡坡路基造成的的应力应变及加速度最大,同时将会对陡坡路基的稳定性产生较大的影响。
The test is based on Alashankou Wenquan County G30 Highway Construction Project.The typical numerical model of steep slope subgrade with reverse H pile is established by the numerical simulation method.The influencing factors on steep slope subgrade caused in the vehicle driving process are studied.The influences of the different vehicle driving speeds,loads and numbers on the steep slope are mainly analyzed.Through ABAQUS finite element test,the result shows that the influence of a no-load vehicle at speed of 20 m/s is the minimum on steep slope subgrade,and the stress,strain and accelerated speed on the steep slope subgrade are at the minimum.When three full-load vehicles at speed of 28 m/s drive on this section of pavement,the stress,strain and accelerated speed on the steep slope subgrade are at the maximum,and at the same time,will make a big influence on the stability of steep slope subgrade.
作者
李伟
郭芳山
LI Wei;GUO Fangshan
出处
《城市道桥与防洪》
2020年第12期162-165,175,M0017,共6页
Urban Roads Bridges & Flood Control
关键词
陡坡路基
有限元
动力学
时程响应
steep slope subgrade
finite element
dynamics
time-history response
