Particle Flow Movement Behavior of Asphalt Pavement under Vehicle Load

被引：0

作者：

Zhang J. ^{[1
]}

Wu X. ^{[1
]}

Rong S. ^{[1
]}

Diao L. ^{[1
]}

Qi J. ^{[1
]}

机构：

[1] Shijiazhuang Hongye Traffic Construction Supervision Co. LTD, Shijiazhuang

来源：

Journal of Engineering Science and Technology Review | 2023年 / 16卷 / 02期

关键词：

Asphalt pavement; Granular flow; Mechanical response; Mesoscopic parameters; Vehicle load;

D O I：

10.25103/jestr.162.07

中图分类号：

学科分类号：

摘要：

The damage to asphalt pavement is closely related to the movement behavior of various material particles in the asphalt mixture under the load of a vehicle. A 2-degree-of-freedom 1/4 vehicle model was constructed to analyze the movement behavior of particles in each structural layer of asphalt pavement. The mechanical behavior of various pavement materials was described by the constitutive relationship of the parallel bond model and contact bond model. The mesoparameters of each material were obtained through uniaxial compression tests. A 3D discrete element model of asphalt pavement was constructed, and the movement of the vehicle load was simulated by using the fish program. Results show that the asphalt pavement structure model can be constructed in accordance with discrete element theory, and the error between the calculated results of the discrete element model and the measured results is within 7%. The vertical velocity of the pavement structural layer particles is the largest, and the transverse velocity is the smallest. The translational velocity of particles in the upper layer is much higher than that in the middle layer, and the translational velocity of particles in the base layer is the least. The vertical contact force between particles is the largest, followed by the longitudinal contact force, and the transverse contact force is the least. These conclusions provide a valuable reference for similar asphalt pavement engineering. © 2023 School of Science, IHU. All rights reserved.

引用

页码：49 / 58

页数：9

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