摘要
为了研究沥青路面流固耦合作用对面层畸变能的影响,选用典型的半刚性基层沥青路面结构为研究对象,应用ABAQUS有限元软件建立饱水沥青路面三维有限元模型,运用多孔介质流固耦合理论分析沥青路面在水-荷载耦合作用下沥青面层各层层底最大主应力和剪应力的响应,从而分析其对面层畸变能的影响。研究结果表明:沥青路面在水-动荷载耦合作用下,上、中和下面层层底的最大主应力和剪应力呈现波动变化,面层畸变能也呈波动变化,且畸变能从上面层到下面层逐渐减小,相邻层间的畸变能相差较大,上面层最大畸变能是下面层的9.86倍。
In order to study the effect of asphalt pavement of fluid-solid coupling on the surface distortion energy, the typical asphalt pavement structure with semi-rigid base was chosed as the research object. The three-dimensional finite element model of full-water asphalt pavement was established by virtue of the ABAQUS finite element software. The maximum principal stress and shear stress response at the bottom of each asphalt layer was analyzed on the basis of the porous medium of fluid-solid coupling theory. And the surface distortion energy was then analyzed. The research results show that the asphalt pavement under the action of water-coupling dynamic load, the bottom of the layers below, which the maximum principal stress and shear stress, fluctuated change, surface distortion can also show volatility change, and distortion energy from above to below layer gradually decreases, and the distortion can vary between adjacent layers is larger, the above layer under the maximum distortion energy is 9.86 times as much.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2017年第4期711-715,共5页
Journal of Railway Science and Engineering
基金
长江学者和创新团队发展计划滚动支持项目(IRT15R29)
关键词
沥青路面
流固耦合作用
半刚性基层
畸变能
多孔介质
asphalt pavement
fluid-solid coupling
semi-rigid base
distortion energy
porous media
