沥青混凝土路面装配式基层连接方式力学特性

为了深入研究沥青混凝土路面装配式基层结构的力学特性,运用ABAQUS有限元软件分别模拟静载和动载作用下,凹凸相嵌合连接以及静载作用下板块边长对装配式基层力学性能的影响.研究结果表明:当预制板块的边长为1.5 m时,沥青混凝土路面装配式基层结构基层底部的最大竖向应变值最小;设置凹凸相嵌合连接使得板底的最大竖向应变减小,并且可以增强装配式基层的协同工作能力,但有无连接的装配式基层结构均能满足板底的最大竖向应变及板底最大水平拉应力要求.

Mechanical characteristicsof assembled base connection modes of asphalt concrete pavement

In order to study deeply the mechanical characteristics of assembled base structure of asphalt concrete pavement, the finite element software ABAQUS is used to simulate respectively the effects of concavo-convex fitting and plate-block side length on the mechanical characteristics of assembled base under dynamic loads or under the static load. The results show that the maximum vertical strain value at the bottom of the base course of the asphalt concrete pavement will be minimum when the plate-block side length is 1.5 m. After the concavo-convex connection is set, the strain at the bottom of the board will be further reduced and the cooperative working ability of the assembled base layer can be enhanced. In addition, the study shows, however, that the assembled base structure with and without connections can meet the requirements of maximum vertical strain and maximum horizontal tensile stress of the bottom of the board.