橡胶沥青应力吸收层性能研究  

Study on the Performance of Stress Absorbing Layer of Rubber Asphalt

作　　者：霍延敏 位可可 HUO Yan-min;WEI Ke-ke(Jiluoxi Project Department of Henan Transport Investment Group Co.Ltd.,Jiyuan 454650,Henan,China;Henan Zhonggong Design&Research Group Co.,Ltd.,Zhengzhou 450000,Henan,China)

机构地区：[1]河南交通投资集团有限公司济洛西项目部,河南济源454650 [2]河南省中工设计研究院集团股份有限公司,河南郑州450000

出　　处：《合成材料老化与应用》2024年第6期62-65,共4页Synthetic Materials Aging and Application

摘　　要：利用数值模拟和室内试验相结合的方法,研究了橡胶沥青应力吸收层对沥青路面力学性能的影响规律,分析了橡胶沥青最佳洒布量和碎石最佳满铺率。结果表明:沥青路面设置橡胶沥青应力吸收层会增大路表弯沉和沥青面层层底剪应力,减小沥青面层层底拉应力;其厚度不宜设置过大,橡胶沥青最佳洒布量为2.2kg/m^(2),碎石最佳满铺率为70%。Using a combination of numerical simulation and in-house tests,the influence of rubberized asphalt stress absorption layer on the mechanical properties of asphalt pavement was studied,and the optimal amount of rubberized asphalt and the optimal full coverage rate of crushed stone were analyzed.The results show that the installation of a rubberized asphalt stress absorption layer on an asphalt pavement will increase the surface deflection and bottom shear stress of the asphalt layer,while reducing the bottom tensile stress.The layer thickness should not be set too large,and the optimal amount of rubberized asphalt is 2.2 kg/m^(2),while the optimal full coverage rate of crushed stone is 70%.

关 键 词：橡胶沥青应力吸收层 力学性能 沥青最佳洒布量 碎石最佳满铺率 

分 类 号：U416[交通运输工程—道路与铁道工程]