海绵型道路沥青路面排水基层结构力学分析  

Mechanical Analysis of Drainage Base of Asphalt Pavement in Sponge Road

作　　者：锁利军[1] SUO Lijun(Luoyang Institute of Science and Technology, Luoyang 471023 China)

机构地区：[1]洛阳理工学院土木工程学院,河南洛阳471023

出　　处：《洛阳理工学院学报（自然科学版）》2017年第3期33-37,共5页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：发展海绵型道路是提高城市防洪、排涝、减灾能力的一种有效措施。为了研究海绵型道路沥青路面排水混凝土基层的应力状态,建立了排水混凝土基层沥青路面三维有限元模型。采用横观各向同性弹性本构关系模型模拟沥青路面结构层间接触状态。利用数值方法对排水混凝土基层沥青路面进行了力学分析。研究了沥青面层厚度、排水混凝土基层厚度、地基模量对基层应力的影响。结果表明:基层荷载应力随基层厚度的增大而减小,随着面层厚度的增大而减小,随着基层与地基模量比的增大而增大;基层温度应力随着基层厚度的增大而增大,随着面层厚度的增大而减小,随着基层与地基模量比的增大而增大。In the construction of sponge city, developing sponge road is an effective measure to improve the ability of flood control, drainage and disaster reduction. In order to analyze stress of drainage concrete base, three-dimension finite element model of asphalt pavement, which includes drainage concrete base, is established. Horizontal isotropic elasticity constitutive model, which is regarded as orthotropic interface model, is used to simulate numerically the interface between horizons of pavement. Numerical method is em- ployed to do mechanical analysis of drainage concrete base of asphalt pavement. The influence of correlated factors, such as surface course＇s thickness, and base＇s thickness and modulus, and foundation＇s modulus, are analyzed. Meanwhile, calculation results with the same factors are compared, and the results show that load stress of drainage concrete base decrease with increase of base＇s thickness, while thermal stress of drainage concrete increase with increase of base thickness. Load stress and thermal stress decrease when the surface thickness increases. Load stress and thermal stress increase when ratio of base＇s modulus and foundation modulus increases.

关 键 词：海绵型道路 沥青路面 排水混凝土基层 层间接触模型 力学分析 

分 类 号：U416[交通运输工程—道路与铁道工程]