基于有限元法的彩色半柔性路面结构力学响应规律分析  

Analysis of Mechanical Response Law of Color Semi-flexible Pavement Structure Based on Finite Element Method

作　　者：陈向阳 金俊杰 周四军 CHEN Xiangyang;JIN Junjie;ZHOU Sijun(Wuxi Municipal Construction Group Co.Ltd,Wuxi 214000,China)

机构地区：[1]无锡市政建设集团有限公司,无锡214000

出　　处：《交通科技》2022年第4期15-19,共5页Transportation Science & Technology

摘　　要：针对传统半刚性基层彩色沥青路面在渠化交通及重载路段结构性病害问题突出等问题,从探究彩色半柔性路面结构整体的力学响应规律出发,基于ABAQUS建立彩色半柔性路面结构三维有限元仿真模型,分析在标准轴载作用下的空间力学响应规律,分析了最大剪应力、水平拉应力与拉应变等5项力学响应指标的空间分布规律,其中最大剪应力峰值出现在路面结构4 cm处,峰值为0.402 MPa,整体弯沉处于较低水平。归纳选择最大剪应力峰值、水泥稳定碎石层层底拉应力、路基顶面竖向压应变、路表弯沉作为关键力学指标并选择3种不同荷载工况,进行轴载变化分析,发现结构抗力水平较好,与传统半刚性基层彩色沥青路面相比,彩色半柔性路面更具备应用于渠化交通路段或重载条件等功能性场合的潜力。In view of the problems of traditional semi-rigid base color asphalt pavement in channelized traffic and heavy load sections with prominent structural damage problems,from the investigation of the overall mechanical response law of color semi-flexible pavement structure,the three-dimensional finite element simulation model of color semi-flexible pavement structure was established based on ABAQUS to analyze the spatial mechanical response law under the action of standard axle load.The spatial distribution law of five mechanical response indexes such as maximum shear stress,horizontal tensile stress and tensile strain were analyzed.The peak of maximum shear stress appeared at 4 cm of the pavement structure with a peak value of 0.402 MPa,and the overall bending and settlement was at a low level.The maximum shear stress peak,the tensile stress at the bottom of cement stabilized gravel layer,the vertical compressive strain at the top surface of the roadbed,and the bending of the road surface were selected as the key mechanical indicators and three different loading conditions were selected for the axial load variability analysis.The level of structural resistance is good,and the color semi-flexible pavement has a wider potential to be used in functional situations such as drainage traffic sections or overload conditions than the traditional semi-rigid base course.

关 键 词：道路工程 彩色半柔性路面 力学响应 三维有限元模拟 剪应力 渠化交通 

分 类 号：U416.2[交通运输工程—道路与铁道工程]