提升路基刚度对路面结构性能的影响分析  

Analysis of the Effect of Improving the Stiffness of the Subgrade on the Performance of the Pavement Structure

作　　者：李良斌 LI Liang-bin(China Metallurgical Guizhou Construction Investment Development Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]中冶(贵州)建设投资发展有限公司,贵阳550081

出　　处：《价值工程》2022年第28期103-105,共3页Value Engineering

摘　　要：以往对于沥青路面结构力学响应的分析多为静力分析,这可能与路基路面的实际受力情况不符。本文采用ABAQUS软件来计算提升路基刚度对于循环荷载作用下沥青路面结构力学响应的影响。分析结果表明提升路基刚度对于降低路表弯沉值、减小累积竖向位移、降低底基层拉应力值具有一定的影响,考虑成本因素采用价值工程对改良方案进行评价,5%水泥土上路床+3%水泥土下路床为最优的改良效果。In the past,the mechanical response analysis of the asphalt pavement structure was mostly static analysis,which may not be consistent with the actual stress situation of the subgrade pavement.In this paper,the ABAQUS software is used to calculate the effect of improving the stiffness of the subgrade on the mechanical response of the asphalt pavement structure under the action of cyclic load.The analysis results show that increasing the subgrade stiffness has a certain effect on reducing the deflection value of the road surface,reducing the cumulative vertical displacement,and reducing the tensile stress value of the sub-base.The value engineering improvement plan is used for evaluation considering the cost.5%cement-soil upper road bed+3%cement-soil lower road bed is the best improvement effect.

关 键 词：弹性模型 力学响应 循环动荷载 路基刚度 

分 类 号：U416[交通运输工程—道路与铁道工程]