【摘要】 为了分析聚丙烯纤维加筋水泥石灰土基层材料对路面结构设计及重载交通的影响,以聚丙烯纤维加筋水泥石灰土为对象,借助正交分析法,选取基层厚度、基层模量(聚丙烯纤维掺量)和底基层厚度作为主要影响因素,对聚丙烯纤维水泥石灰土基层沥青路面结构设计参数进行计算;同时分析了不同超载作用下纤维水泥石灰土基层沥青路面结构的弯沉及应力情况。结果表明:提高基层厚度有利于路面结构受力,同时使用聚丙烯纤维掺量为0.2%的水泥石灰土作基层材料,对于优化重载作用下的路面结构设计更为显著。为聚丙烯纤维加筋水泥石灰土在石料匮乏地区的应用提供了依据。更多还原

【Abstract】 In order to analyze the effect of polypropylene fiber reinforced cement lime soil base material on pavement structure design and heavy load traffic. In this study,taking polypropylene fiber reinforced cement lime soil as the research object,by means of orthogonal analysis,the thickness of the base layer,the base layer modulus( polypropylene fiber content) and the subbase layer thickness are selected as the main factors,and the design parameters of asphalt pavement structure of fiber cement lime soil base are calculated. At the same time,the deflection and stress of asphalt pavement structure of fiber cement lime soil under different overload conditions are analyzed. The results show that increasing the thickness of the basement is beneficial to the stress of the pavement structure,simultaneously,using polypropylene fiber content of 0. 2% of the cement lime soil as the base material,is more significant for the optimization of heavy load under the pavement structure design.更多还原