期刊论文

Analysis of Dynamic Response of Asphalt Pavement Structure Under Different Seepage Flow States

中文

中国公路学报

1001-7372

2019

32

3

13-24

10.19721/j.cnki.1001-7372.2019.03.002

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

本校为第一机构

为了研究荷载-渗流耦合作用下不同渗流形态对沥青路面结构各力学场量响应的影响,进一步揭示沥青路面水损害机理,在高水压沥青混合料渗透试验的基础上,采用非线性有限元方法,模拟分析碗形分布动荷载下Forchheimer非线性渗流和达西线性渗流时饱水沥青路面内部各力学场量的变化。渗透试验结果表明:在较高水力梯度下渗流流速-水力梯度关系呈现出非线性特征,不再适用达西定律,而需应用Forchheimer非线性渗流定律描述。数值模拟分析结果表明:2种渗流形态时沥青路面结构内部各力学场量均随着车轮动荷载的作用过程表现出波动性,且孔隙水压力均随着半正弦波型荷载的变化而呈正相关关系;与达西渗流时计算结...

In order to study the effects of different seepage states on the response of mechanical field parameters of asphalt pavement structures under load-seepage coupling behavior, and reveal the mechanism of water damage, this study simulated and analyzed the changes in the mechanical response of saturated asphalt pavement structures under Forchheimer seepage flow and Darcy seepage flow conditions using non-linear finite element method based on the permeability test of asphalt mixture under the condition of high water pressure. The permeability test ...