期刊论文

Contrastive Analysis of Dynamic Response of Saturated Asphalt Pavement Structure under Different Loading Modes

中文

沈阳建筑大学学报(自然科学版)

2095-1922

2019

35

2

263-276

10.11717/j.issn:2095-1922.2019.02.09

51378084:国家自然科学基金 2014319825060:交通部应用基础研究项目 CX2014B371:湖南省研究生科研创新项目 kfj150303:道路结构与材料交通行业重点实验室(长沙)开放基金

本校为第一机构

目的探讨不同荷载模式下饱水沥青路面结构的水损害机理,改进和完善沥青路面防排水设计方法.方法基于沥青混合料的渗透试验和多孔介质流固耦合理论,采用非线性有限元方法,对比分析了碗形分布荷载和均布荷载作用下饱水沥青路面结构各力学场量的变化并进行数值模拟分析.结果在均布荷载和碗型荷载两载模式下,饱水沥青路面结构内部各力学场量的时程变化特性相类似,均随着车轮动荷载的作用过程表现出波动性和滞后性,孔隙水压力对体积应力和应变影响较大.与均布荷载下计算结果相比,碗形分布荷载作用时上面层内最大正孔隙水压力高0.18倍,下面层底部最大水平拉应力和最大水平拉应变分别高0.14倍和0.15倍,...

The mechanism of water damage of saturated asphalt pavement structure under different loading modes was discussed to improve and perfect the design method of waterproofing and drainage for asphalt pavement.Based on the permeability test of asphalt mixture,the changes of the mechanical field parameters among the saturated asphalt pavement structure under uniform distribution load and bowl-shaped distribution load were simulated and analyzed by using non-linear finite element method according to the theory of porous media.Stimulating results show...