土工基础

›› 2018, Vol. 32 ›› Issue (6): 676-680.

• 工程实录 • 上一篇    下一篇

墙顶复杂外力作用下加筋土挡墙模型试验研究

黄   聪1，余文成1,2，王志兵1,2，何宏发1   

  1. （1.桂林理工大学土木与建筑工程学院，广西桂林 541004;2.广西岩土力学与工程重点实验室，广西桂林 541004）
  • 收稿日期:2018-03-21 修回日期:2021-08-09 出版日期:2018-12-20 发布日期:2018-12-21
  • 通讯作者: 余文成（1974-），男，副院长，副教授。主要从事道路工程方面的教学与科研。
  • 作者简介:黄 聪（1994-），男，本科生，研究方向为道路工程。
  • 基金资助:

    广西科技计划项目（桂科攻142511012），桂林理工大学大学生创新创业训练计划项目（201710596037）；广西自然科学基金项目（2017GXNSFAA198092）。

Model Test of Reinforced Earth Retaining Walls Under Complicated Load Conditions Acting of the Top of Wall

HUANG Cong1, YU Wencheng1,2, WANG Zhibing1,2， HE Hongfa1   

  1. (1.College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004；
    2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin 541004)
  • Received:2018-03-21 Revised:2021-08-09 Online:2018-12-20 Published:2018-12-21

摘要： 为了研究加筋挡土墙在竖直荷载、水平荷载及水平瞬时荷载组成的复杂力系作用下能够保持挡土墙稳定及用筋面积最小时的最优布筋方式，以白卡纸作为墙面板，牛皮纸作为筋带，砂土作为填料开展了室内模型试验，对比了三种不同配筋方式对挡墙稳定与墙面板变形的影响。结果发现“主筋-次筋”组合方案能大幅降低筋带使用量，且能较好地控制墙面板变形，次筋不仅能分担主筋所承受的荷载，而且能提高靠近墙面板部分区域土体的压实度，增加了填土的内部稳定性。

关键词: 加筋土挡墙, 模型试验, 次筋, 变形

Abstract: This paper presents a laboratory modeling program of reinforced soil retaining wall under complicated loading conditions. The optimized reinforcement and reinforcing spacing were investigated throughout testing. The facing of the retaining wall panel was simulated by white paper cardboards and the reinforcement straps were simulated by Kraft paper types. The backfill material in the mechanically stabilized earth wall system was clean sand. Three different reinforcement spacings were studied. The model test results indicate that the combination of primary and secondary reinforcements can effectively reduce the total reinforcement quantities with a satisfactory facing movement control. The use of secondary reinforcements can effectively share the loading carried by the primary reinforcements and also improve the degree of compaction neat the wall panel.

Key words: Mechanically Stabilized Earth Retaining Wall, Model Test, Secondary Reinforcements, Deformation