Dynamic Response Analysis of Soil-Rock Mixed Subgrade under Moving Vehicle Load

doi:10.16046/j.cnki.issn2096-5680.2022.03.003

Journal of Hebei University of Water Resources and Electric Engineering ›› 2022, Vol. 32 ›› Issue (3): 14-20.DOI: 10.16046/j.cnki.issn2096-5680.2022.03.003

• Geotechnical Engineering Column • Previous Articles Next Articles

Dynamic Response Analysis of Soil-Rock Mixed Subgrade under Moving Vehicle Load

ZHAO Ya-jun^1,2, CAO Hao¹, SONG Yang^3,4, WANG Lei³, ZHANG Zhi-bin³

1. School of Civil Engineering, Hebei University of Engineering, 056038, Handan, Hebei, China;
2. Demonstration Center for Experimental Teaching of Mechanics, 056038, Handan, Hebei, China;
3. Department of Traffic Engineering, Hebei University of Water Resources and Electric Engineering, 061001, Cangzhou, Hebei, China;
4. Hebei Key Laboratory of Geotechnical Engineering Safety and Deformation Control, 061001, Cangzhou, Hebei, China

Received:2022-03-07 Revised:2022-05-14 Online:2022-09-30 Published:2023-10-26

移动车辆荷载下土石混填路基动力响应分析

赵亚军, 曹浩, 宋杨, 王磊, 张志彬

1.河北工程大学土木工程学院,河北省邯郸市太极路19号 056038;
2.河北工程大学力学实验教学示范中心,河北省邯郸市太极路19号 056038;
3.河北水利电力学院交通工程系,河北省沧州市黄河西路49号 061001;
4.河北省岩土工程安全与变形控制重点实验室,河北省沧州市黄河西路49号 061001

通讯作者: 宋杨(1982-),男,河北沧州人,博士,教授,主要从事交通岩土方面研究。E-mail:songyang@hbwe.edu.cn
作者简介:赵亚军(1979-),男,河南汤阴人,博士,副教授,主要从事道路与新材料方面研究。E-mail:zhaoyajun@hebeu.edu.cn
基金资助:
国家自然科学基金项目(51978237);河北省自然科学基金项目(E2018412002);河北省人才工程资助项目(A202101027);河北省高等学校科学技术研究重点项目(ZD2021068);河北省大学生科技创新能力培育专项项目(22E50398D)。

Abstract

Abstract: In order to study the dynamic response of soil-rock mixed roadbed under vehicle load, a three-dimensional numerical model of asphalt pavement system was established by using finite element software ABAQUS.The moving uniform distribution load was used to simulate the vehicle load, and the response law of dynamic stress and deformation of soil-rock mixed roadbed under different driving speeds and vehicle loads was analyzed, and the depth of roadbed working area was determined.The results show that in the cross section of the roadbed, the vertical stress is the largest at the wheel action position, and the stress decreases when it is far away from the action point. The dynamic stress and deformation decay fastest in the depth of 1m. The influence degree of vehicle load on roadbed is greater than that of vehicle speed. With the increase of vehicle overloading rate, the dynamic stress response of subgrade increases, and the depth of subgrade work area is between 2.33m and 4.15m.

Key words: road engineering, moving loads, soil-rock subgrade, dynamic response, numerical simulation

摘要： 为研究车辆荷载下土石混填路基的动力响应,利用ABAQUS有限元软件建立沥青路面系统三维数值模型。采用移动均布荷载模拟车辆荷载,分析不同的行车速度和车辆荷载作用下土石混填路基动应力、变形的响应规律,并确定路基工作区深度。结果表明:在路基横断面,车轮作用位置处竖向应力最大,远离作用点时应力减小;动应力和变形在路基深度1m范围内衰减最快;车辆荷载对路基的影响程度要大于车速对路基的影响程度;随着车辆超载率的增加,路基的动应力响应也就越大,路基的工作区深度在2.33m～4.15m之间。

关键词: 道路工程, 移动荷载, 土石混填路基, 动力响应, 数值模拟

CLC Number:

U416.1

ZHAO Ya-jun, CAO Hao, SONG Yang, WANG Lei, ZHANG Zhi-bin. Dynamic Response Analysis of Soil-Rock Mixed Subgrade under Moving Vehicle Load[J]. Journal of Hebei University of Water Resources and Electric Engineering, 2022, 32(3): 14-20.

赵亚军^1,2, 曹浩¹, 宋杨^3,4, 王磊³, 张志彬³. 移动车辆荷载下土石混填路基动力响应分析[J]. 河北水利电力学院学报, 2022, 32(3): 14-20.

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Dynamic Response Analysis of Soil-Rock Mixed Subgrade under Moving Vehicle Load

移动车辆荷载下土石混填路基动力响应分析

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