车辆制动荷载对再生沥青混合料面层变形的影响  

Influence of Vehicle Braking Load on Deformation for Recycled Asphalt Mixture Surface Layer

作　　者：王铵 WANG An(China Railway 18th Bureau Group Fifth Engineering Co.,Ltd.,Tianjin 300451,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300451

出　　处：《施工技术(中英文)》2025年第5期138-141,146,共5页Construction Technology

基　　金：中铁十八局集团有限公司科技创新项目。

摘　　要：借助模型试验,研究不同制动荷载作用下,不同面层再生沥青混合料路面表层水平方向的应变变化规律,分析路面结构与制动荷载对路面竖向应变的影响,探索不同制动荷载下路面结构水平位移的变化规律。结果表明,当制动荷载为40kN时,车轮前方0.25m处,再生混合料布置在下面层、中面层、上面层时的压应变最大。当匀速行驶时,路面表层为压应变,为-1.0ε×10^(4)。随着再生混合料由下面层至上面层,路面表层水平位移逐渐增大。Through model tests,the variation law of horizontal tensile strain at the surface layer of recycled asphalt mixture pavement under different braking loads at different layers was studied.The influence of pavement structure and braking load on the vertical tensile strain of pavement was analyzed,and the variation law of lateral displacement of pavement structure under different braking loads was explored.The results are as follows,when the braking load is 40kN,at 0.25m in front of the wheel,the compressive strain is the largest when the recycled mixture placed in the lower layer,the middle layer and the upper layer.When the vehicle is traveling at a constant speed,the surface layer of the pavement shows compressive strain,and the value is-1.0ε×104.As the recycled mixture moves from the lower layer to the upper layer,the lateral displacement of the surface layer of the pavement gradually increases.

关 键 词：公路 再生沥青混合料 面层结构 横向变形 制动荷载 

分 类 号：U416[交通运输工程—道路与铁道工程]