摘要
为分析探讨半柔性材料在沥青路面结构中的层位适用性,采用APBIH97软件计算了几种典型路面结构的半刚性基层层底拉应力、路基顶面压应变和不同面层深度位置剪应力。分析结果表明:半柔性材料用于路面上面层或中面层均可使半刚性基层层底拉应力及路基顶面竖向压应变降低,使沥青结构层内的剪应力减小。综合计算结果及经济性、行驶舒适性等因素,对于公交专用道,推荐将半柔性材料用于中面层;对于道路交叉口位置,推荐用于上面层。
In order to analyze and discuss the layer suitability of semi-flexible material in asphalt pavement structure,APBIH97 software was used to calculate the bottom tensile stress of semi-rigid base layer,top surface compressive strain of soil foundation and shear stress of different depth.The results showed that semi-flexible materials could reduce the tensile stress at the bottom of the semi-rigid base layer,the vertical compressive strain at the top of the subgrade and decrease the shear stress in the asphalt structure layer.For bus lanes,semi-flexible materials were recommended for the middle surface layer.For road intersection locations,it was recommended for upper layers.
出处
《上海公路》
2020年第4期68-70,I0006,共4页
Shanghai Highways
关键词
沥青路面
半柔性材料
路面结构
力学分析
asphalt pavement
semi-flexible material
pavement structure
key technologies
mechanical analysis
