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多轮组车辆荷载下公路地基的附加动应力

魏星, 王刚

魏星, 王刚. 多轮组车辆荷载下公路地基的附加动应力[J]. 岩土工程学报, 2015, 37(10): 1924-1930. DOI: 10.11779/CJGE201510022
引用本文: 魏星, 王刚. 多轮组车辆荷载下公路地基的附加动应力[J]. 岩土工程学报, 2015, 37(10): 1924-1930. DOI: 10.11779/CJGE201510022
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WEI Xing, WANG Gang. Induced dynamic stresses in subsoil of road subjected to moving vehicle load with wheel groups[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(10): 1924-1930. DOI: 10.11779/CJGE201510022
Citation: WEI Xing, WANG Gang. Induced dynamic stresses in subsoil of road subjected to moving vehicle load with wheel groups[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(10): 1924-1930. DOI: 10.11779/CJGE201510022
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多轮组车辆荷载下公路地基的附加动应力  English Version

  • 1. 西南交通大学土木工程学院，四川 成都 610031;
    2.重庆大学土木工程学院，重庆 400044

基金项目: 国家自然科学基金项目（51209179）
详细信息
    作者简介:

    魏星(1977- )，女，博士，副教授，主要从事土的本构理论、数值分析等方面的研究工作。E-mail: weixinghl@163.com。

  • 中图分类号: A

Induced dynamic stresses in subsoil of road subjected to moving vehicle load with wheel groups

  • 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;
    2. School of Civil Engineering, Chongqing University, Chongqing 400044, China

摘要

    摘要
  • 摘要: 基于移动集中点荷载作用下的地基附加动应力的理论解，采用数值积分方法计算了移动圆形均布荷载下地基的附加动应力。将交通荷载简化为移动的均布圆形荷载，对比分析了荷载作用半径、荷载移动速度对地基附加动应力的影响规律。分析结果表明：浅层地基和深层地基中的附加动应力分布规律有所差异;荷载移动速度对地基中各应力分量的影响规律与地基深度密切相关;地基中的附加应力分布曲线具有良好的归一化规律。在单个轮轴荷载计算方法的基础上，采用叠加法对多轮组车辆荷载作用下的地基附加动应力进行了研究。计算结果表明：应力的叠加效应和荷载移动速度效应对深层地基的影响较浅层地基更为显著;多轮组车辆荷载作用下，应力路径形式变得更为复杂。
    Abstract: The single wheel load of vehicle is simplified as a uniform circular pressure acting on the road surface, then an integral solution method for calculating the induced stresses in subsoil due to a single moving wheel load is proposed based on the theoretical solution of Eason. An integral program for the proposed integral solution is coded so as to numerically evaluate the induced dynamic stresses. The cases of elastic half-space solid subjected to single wheel load with different acting radii and moving velocities are analyzed by the program. The calculated results reveal that the effect of acting radius and moving velocity on induced stresses depends on the depth of the soil element, and the distribution curves of induced dynamic stresses can be normalized to be one group of curves. The induced dynamic stresses due to a group of wheel load are evaluated using the superposition method. The effects of stress superposition and the moving velocity are more significant for deeper soil elements in subsoil, which results in complicated stress paths.
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    • 参考文献(15)
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出版历程
  • 收稿日期:  2014-11-25
  • 发布日期:  2015-10-19

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