岩土力学 ›› 2019, Vol. 40 ›› Issue (4): 1427-1432.doi: 10.16285/j.rsm.2017.2105

• 基础理论与实验研究 • 上一篇    下一篇

面板对加筋土挡墙影响的离心模型试验研究

徐 鹏1, 2,蒋关鲁1, 2,王 珣3,黄昊威1,黄 哲2,王智猛3   

  1. 1. 西南交通大学 土木工程学院,四川 成都 610031;2. 西南交通大学 高速铁路线路工程教育部重点试验室,四川 成都 610031; 3. 中铁二院工程集团有限责任公司,四川 成都 610031
  • 收稿日期:2017-10-20 出版日期:2019-04-11 发布日期:2019-04-25
  • 通讯作者: 蒋关鲁,男,1962年生,博士,教授,主要从事道路与铁道工程方面的研究工作。E-mail: wgljiang@swjtu.edu.cn E-mail:sdxplt@163.com
  • 作者简介:徐鹏,男,1988年生,博士研究生,主要从事高速铁路路基及地基处理设计等方面的研究工作
  • 基金资助:
    中国铁路总公司科技研究开发计划项目(No. 2014G003-C)

Centrifuge model tests on influence of facing on reinforced soil retaining walls

XU Peng 1, 2, JIANG Guan-lu 1, 2, WANG Xun3, HUANG Hao-wei 1, HUANG Zhe2, WANG Zhi-meng3   

  1. 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. Key Laboratory of High-speed Railway Engineering of Ministry of Education, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 3. China Railway Eryuan Engineering Group Co., Ltd., Chengdu, Sichuan 610031, China
  • Received:2017-10-20 Online:2019-04-11 Published:2019-04-25
  • Supported by:
    This work was supported by the Project of Science and Technology Research and Development Plan of China Railway Corporation (2014G003-C).

摘要: 加筋土挡墙因其特有的景观性能、协调变形性能而日益受到设计者青睐。面板作为加筋土挡墙的组成部分,对墙体的承载能力影响显著。针对现有设计规范无法考虑面板形式对结构自身力学变形特性的影响,设计并开展了整体式与分块式面板的离心模型试验。数据测试分析显示:整体式面板加载期的位移小于分块式面板位移;由于分块式面板位移较大,所以其水平土压力小于整体式面板土压力;加筋土挡墙面板底部存在应力集中现象;分块式面板筋-土界面的摩擦系数发挥值大于整体式面板数值,但两者均小于设计规范建议值;由于模型筋材长度较长并且连接件的存在,导致原型设计较为保守。

关键词: 加筋土挡墙, 面板, 离心模型试验, 位移, 摩擦系数

Abstract: Reinforced soil retaining walls are increasingly favored by designers in civil engineering because of its unique landscape performance and good seismic-resistance performance. As an integral part of the reinforced soil retaining walls, facing has a significant influence on its bearing capacity. In view of the fact that the existing design codes cannot consider the effect of facing form on the mechanical deformation characteristics of the structure itself, centrifuge model tests were carried out on walls with full-height panel facing and blocked facing. The following results are obtained: the displacement of the full-height panel facing is less than that of the blocked facing during the loading period. Since the larger displacement for the model wall with blocked facing, its horizontal earth pressure is smaller; stress concentration occurs at the bottom of the facing of the reinforced soil retaining wall. It is found that the soil-reinforcement friction coefficient for the reinforced soil retaining wall with blocked facing is larger than that in the case of full-height panel facing, while both of them are less than the recommended values from the design codes. The model walls are conservative due to the larger reinforcement length and the use of the anchor connector.

Key words: reinforced soil retaining wall, facing, centrifuge model test, displacement, friction coefficient

中图分类号: 

  • TU 472
[1] 赵久彬, 刘元雪, 何少其, 杨骏堂, 柏准, . 三峡库区阶跃变形滑坡水平位移与降雨量 数学统计模型[J]. 岩土力学, 2020, 41(S1): 305-311.
[2] 王立安, 赵建昌, 余云燕, . 瑞利波在非均匀饱和地基中的传播特性[J]. 岩土力学, 2020, 41(6): 1983-1990.
[3] 黄福云, 陈汉伦, 董锐, 单玉麟. 水平低周往复位移下单桩-土相互作用试验研究[J]. 岩土力学, 2020, 41(5): 1625-1634.
[4] 田抒平, 高盟, 王滢, 陈青生. Duxseal隔振性能数值分析与现场试验研究[J]. 岩土力学, 2020, 41(5): 1770-1780.
[5] 汤明高, 李松林, 许 强, 龚正峰, 祝 权, 魏 勇. 基于离心模型试验的库岸滑坡变形特征研究[J]. 岩土力学, 2020, 41(3): 755-764.
[6] 宋义敏, 张 悦, 许海亮, 王亚飞, 贺志杰. 基于非均匀特征的岩石蠕滑与黏滑变形演化研究[J]. 岩土力学, 2020, 41(2): 363-371.
[7] 王国辉, 陈文化, 聂庆科, 陈军红, 范晖红, 张川, . 深厚淤泥质土中基坑开挖对基桩 影响的离心模型试验研究[J]. 岩土力学, 2020, 41(2): 399-407.
[8] 邓涛, 林聪煜, 柳志鹏, 黄明, 陈文菁, . 大位移条件下水平受荷单桩的简明弹塑性计算方法[J]. 岩土力学, 2020, 41(1): 95-102.
[9] 王忠凯, 徐光黎. 盾构掘进、离开施工阶段对地表变形的 影响范围及量化预测[J]. 岩土力学, 2020, 41(1): 285-294.
[10] 王体强, 王永志, 袁晓铭, 汤兆光, 王海, 段雪锋. 基于振动台试验的加速度积分位移方法可靠性研究[J]. 岩土力学, 2019, 40(S1): 565-573.
[11] 王钦科, 马建林, 陈文龙, 杨彦鑫, 胡中波, . 上覆土嵌岩扩底桩抗拔承载特性离心 模型试验及计算方法研究[J]. 岩土力学, 2019, 40(9): 3405-3415.
[12] 吴爽爽, 胡新丽, 章涵, 周昌, 龚辉, . 嵌岩桩负摩阻力现场试验与计算方法研究[J]. 岩土力学, 2019, 40(9): 3610-3617.
[13] 张强, 李小春, 周英博, 石露, 白冰, . 高压孔隙CO2/水作用下完整四川三叠系 砂岩剪切特性的试验研究[J]. 岩土力学, 2019, 40(8): 3028-3036.
[14] 邓茂林, 易庆林, 韩蓓, 周剑, 李卓骏, 张富灵, . 长江三峡库区木鱼包滑坡地表变形规律分析[J]. 岩土力学, 2019, 40(8): 3145-3152.
[15] 许紫刚, 杜修力, 许成顺, 韩润波, 乔磊. 复杂断面地下结构地震反应分析的 广义反应位移法研究[J]. 岩土力学, 2019, 40(8): 3247-3254.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!