河北水利电力学院学报

河北水利电力学院学报 ›› 2021, Vol. 31 ›› Issue (3): 7-12.DOI: 10.16046/j.cnki.issn2096-5680.2021.03.002

• 技术理论与应用 • 上一篇    下一篇

沥青路面路基工作区深度影响因素的研究

刘小兰1, 陈郝2, 李自林3   

  1. 1.天津城建大学土木工程学院,天津市津静路26号 300384;
    2.北京建工六建集团有限责任公司,北京市海淀区玉泉路甲2号 061001;
    3.河北省岩土工程安全与变形控制重点实验室(河北水利电力学院),河北省沧州市黄河西路49号 061001
  • 收稿日期:2021-01-04 修回日期:2021-03-23 出版日期:2021-09-30 发布日期:2021-11-19
  • 通讯作者: 李自林（1953-），男，河北成安人，硕士，河北水利电力学院教授，博士生导师，主要从事结构稳定与振动研究。E-mail：hebeigaomuying@163.com
  • 作者简介:刘小兰（1989-），女，河北张家口人，博士，讲师，主要从事路基路面动态响应研究。E-mail：1066323835@qq.com
  • 基金资助:
    国家自然科学基金项目（51178456）

Study of Influence Factors on Asphalt Pavement Subgrade Workspace Depth

LIU Xiao-lan1, CHEN Hao2, LI Zi-lin3   

  1. 1. Civil Engineering College, Tianjin Chengjian University,300384, Tianjin, China;
    2. BCEG NO.6 Construction Engineering CO., LTD., 100143, Beijing, China;
    3. Hebei Key Laboratory of Geotechnical Engineering Safety and Deformation Control (Hebei University of Water Resources and Electric Engineering), 061001, Cangzhou, Hebei, China
  • Received:2021-01-04 Revised:2021-03-23 Online:2021-09-30 Published:2021-11-19

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摘要： 针对当前未考虑道路结构层参数、车辆动荷载、行车速度对沥青路面路基工作区深度的影响现状,文中借助有限元软件,分析了38种道路结构层参数、5种车辆动荷载和2种行车速度对沥青路面路基工作区深度的影响。结果表明:铺面结构层模量对路基工作区深度的影响较小,而铺面结构层厚度对路基工作区深度的影响较大,特别是基层厚度对路基工作区深度的影响尤为显著;土基模量对路基工作区深度影响显著,但随着土基模量的增加,路基工作区深度增加;车辆动荷载对路基工作区深度的影响呈线性正相关,且车辆动载每增加50kN,路基工作区深度增加约1m;行车速度对路基工作区深度的影响呈正相关,且行车速度每增加10m/s,路基工作区深度增加约0.4～1.4m。

关键词: 沥青路面, 结构层参数, 车辆动荷载, 行车速度, 路基工作区深度

Abstract: Because the influence of structure layer parameters, vehicle dynamic load and speed on asphalt pavement sub-grade workspace depth is not considered, this paper analyzes the influence factors of asphalt pavement sub-grade work area depth with the finite element software, including 38 kinds of road structure layer parameters, 5 kinds of vehicle dynamic load and 2 kinds of driving speed. The results are as follows: modulus of pavement has less effect on the sub-grade work area depth, but thickness of pavement has more effect on the sub-grade work area depth, particularly thickness of the grass-roots level. Modulus of soil base has great effect on the sub-grade work area depth, and the sub-grade work area depth increases with the increase of modulus of soil base. The vehicle dynamic load has a linear positive correlation with the sub-grade work area depth, and when the vehicle dynamic load increases 50KN, the sub-grade work area depth increases about 1 m. The vehicle speed has a linear positive correlation with the sub-grade work area depth, and when the vehicle speed increases 10m/s, the sub-grade work area depth increases about 0.4-1.4 m.

Key words: asphalt pavement, structural layer parameters, vehicle dynamic load, speed, subgrade workspace depth

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