Model testing and numerical analysis of dynamic response of graded crushed rock base structure

被引：0

作者：

Li J. ^{[1
,2
]}

Zhang A.-S. ^{[1
]}

Zhang J.-H. ^{[1
]}

Qian J.-F. ^{[3
]}

机构：

[1] Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha

[2] College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing

[3] Department of Civil Engineering, Monash University, Clayton, 3800, VIC

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 06期

关键词：

cross-anisotropy; finite element method; graded crushed rock; model test; road engineering;

D O I：

10.13229/j.cnki.jdxbgxb.20220355

中图分类号：

学科分类号：

摘要：

To understand the actual dynamic response of graded crushed rock（GCR），the laboratory model testing and numerical analysis of GCR base layer were performed. First，based on the cross-anisotropy theory，a mechanical-empirical model for elastic modulus of GCR was established. Then，the stress and deformation laws at different positions of GCR structure were analyzed through laboratory model test. Finally，a novel calculation approach of finite element model was proposed for GCR base layer. The results of model testing and numerical analysis show that changes of stress in the GCR structure present a significant cross-anisotropy characteristic. The loading time and peaking displacement at the top of GCR layer are closely related to vehicle speed. The calculation results of finite element model are basically consistent with the trend of laboratory model test，but it is still conservative in pavement design. © 2023 Editorial Board of Jilin University. All rights reserved.

引用

页码：1782 / 1789

页数：7

共 19 条

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