局部静荷载作用下加筋对土拱效应的影响
作者:
作者单位:

1.同济大学 土木工程学院,上海 200092;2.中国长江三峡集团有限公司 上海勘测设计研究院有限公司,上海 200434;3.新城商业管理集团有限公司 上海分公司,上海 200000;4.浙江大学 建筑设计研究院有限公司,浙江 杭州 310027;5.中国长江三峡集团有限公司 科学技术研究院,北京 100038

作者简介:

李格烨(1995 — ),女,博士生,主要研究方向为地基加固及加筋土结构.E-mail: ligeye@tongji.edu.cn

通讯作者:

沈盼盼(1989 —),女,工学博士,主要研究方向为地基处理及加筋土结构.E-mail: hermit_shpp@hotmail.com

中图分类号:

TU431

基金项目:

国家自然科学基金面上项目(51478349)


Effects of Reinforcement on Soil Arching Development Under Localized Static Loading
Author:
Affiliation:

1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;2.Shanghai Investigation, Design and Research Institute Co., Ltd., China Three Gorges Corporation, Shanghai 200434, China;3.Shanghai Branch, Seazen Business Management Corporation Co., Ltd., Shanghai 200000, China;4.Architectural Design and Research Institute Co., Ltd., Zhejiang University, Hangzhou 310027, Zhejiang, China;5.Research Center for Hydropower Engineering, Institute of Science and Technology, China Three Gorges Corporation, Beijing 100038, China

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为探究局部静荷载作用下加筋对土拱效应的影响,利用铝棒相似土作为填料,设置4种不同的筋材布置方式,开展了平面应变活动门试验。试验结果表明,在自重和局部静荷载作用下,筋材的使用明显地减少了土拱的退化。与无筋情况不同,筋材的存在使得土拱在卸载阶段仍继续退化。当筋材总刚度基本相同时,垫层上、下方铺设两层筋材的方式有利于土拱的发展。另外,提出了预测不加筋活动门上方或筋材挠曲段上方由于局部静荷载引起的竖向附加应力的理论计算方法。

    Abstract:

    In this paper, plane-strain trapdoor tests were conducted to investigate the effects of reinforcement on the soil arching development under localized static loading, by using analogical soil made of aluminum rods as the backfill and by using four different reinforcement arrangements. Test results show that the use of reinforcement significantly minimizes soil arching under self-weight and localized static loading. Soil arching with reinforcement degrades greatly in unloading stages due to the existence of reinforcement, which was different from that without reinforcement. When the total reinforcement stiffness is the same, two low stiffness reinforcement layers with a backfill layer of certain thickness in between promotes soil arching. A soil arching analytical solution was proposed to predict the additional vertical stresses induced by localized static loading.

    参考文献
    相似文献
    引证文献
引用本文

李格烨,徐超,沈盼盼,张兴亚,罗敏敏,梁程.局部静荷载作用下加筋对土拱效应的影响[J].同济大学学报(自然科学版),2022,50(1):50~59

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-03-19
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-02-17
  • 出版日期: