基于温度场的混合式基层沥青路面结构车辙数值模拟分析

发布时间：2018-05-12 09:09

本文选题：道路工程 + 沥青路面　；参考：《公路交通科技》2015年12期

【摘要】：为了研究基于温度场的混合式基层沥青路面结构的车辙性能,以广西地区气候特征为例,针对混合式基层沥青路面结构特点和现有研究的不足,运用有限元方法,借助ABAQUS计算了4种不同组合的路面结构的温度梯度分布和车辙深度。结果表明:采用连续变温的沥青路面车辙模拟分析方法更符合实际情况;通过合理的结构设计,混合式基层的抗车辙性能比半刚性基层沥青路面更优越;以水稳为底基层,级配碎石为过渡层及大粒径沥青碎石混合料作下面层的混合式基层沥青路面结构,不仅有利于减少路面裂缝的产生,改善沥青路面的内部排水,而且不会因其剪切破坏而产生更严重的车辙;沥青路面中面层是车辙变形的主要层面,厚式沥青路面结构的抗车辙性能欠佳,但通过合理的结构设计,也不会出现过于严重的车辙现象。
[Abstract]:In order to study the rutting performance of mixed base asphalt pavement structure based on temperature field, taking the climate characteristics of Guangxi region as an example, aiming at the structural characteristics of mixed base asphalt pavement and the deficiency of existing research, the finite element method is used. The temperature gradient distribution and rutting depth of four different combinations of pavement structures are calculated by ABAQUS. The results show that the rutting simulation analysis method of asphalt pavement with continuous variable temperature is more suitable for the actual situation; through reasonable structural design, the rutting resistance of the hybrid base is better than that of the semi-rigid asphalt pavement, and the base is based on water stability. Graded crushed stone is a mixed base asphalt pavement structure with transition layer and large particle size asphalt macadam mixture as the lower layer. It is not only helpful to reduce the occurrence of pavement cracks, but also to improve the internal drainage of asphalt pavement. The middle surface of asphalt pavement is the main layer of rutting deformation, and the rutting resistance of thick asphalt pavement structure is poor, but through reasonable structural design, Nor will there be too much rutting.
【作者单位】：长沙理工大学土木与建筑工程学院;现代公路交通基础设施先进建养技术湖南省协同创新中心;湖南交通职业技术学院;长沙理工大学交通运输工程学院;
【基金】：国家自然科学基金项目(51278067,51508040) 湖南省教育厅科学研究项目(14C0409)
【分类号】：U416.217

【共引文献】