柔性挡墙的主动土压力计算及分布研究

应宏伟; 朱伟; 郑贝贝; 王小刚

doi:10.11779/CJGE2014S2001

柔性挡墙的主动土压力计算及分布研究 English Version

应宏伟^{1, 2},
朱伟^{1, 2},
郑贝贝³,
王小刚^{1, 2}

1. 浙江大学滨海和城市岩土工程研究中心,浙江杭州 310058;
2. 浙江大学软弱土与环境土工教育部重点试验室,浙江杭州 310058;
3. 浙江东南建筑设计有限公司,浙江杭州 310014

详细信息

作者简介:
应宏伟(1971- ),男,博士,副教授,从事岩土工程的教学与科研工作。E-mail: ice898@zju.edu.cn。

计量
- 文章访问数: 0265
- HTML全文浏览量: 0
- PDF下载量: 0257
出版历程
- 收稿日期: 2014-07-27
- 发布日期: 2014-07-27

Calculation and distribution of active earth pressure against flexible retaining walls

YING Hong-wei^{1, 2},
ZHU Wei^{1, 2},
ZHENG Bei-bei³,
WANG Xiao-gang^{1, 2}

1. Research Center of Costal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China;
3. Zhejiang Southeast Architecture Design Co. Ltd., Hangzhou 310014, China

摘要

摘要: 已有研究表明,柔性挡墙在不同位移量和位移模式下,主动土压力的大小和分布均发生变化,其分布也与刚性挡墙有明显区别。在前人室内试验和数值模拟结果的基础上,建立了考虑位移变化效应的柔性挡墙土压力计算模型,采用中间状态系数来统一反映挡墙位移模式和位移量的影响,提出了任意位移柔性挡墙主动土压力合力系数的计算公式;在求得合力基础上,将土体简化为非线性弹簧和刚塑性体的组合体,提出了任意位移下的土压力分布和合力作用点高度的计算方法。以前人模型试验为算例,将本文方法与试验结果、已有理论方法的对比表明,本文方法得到的土压力分布与试验值更接近。研究还发现,随着柔性挡墙位移量的增大,土压力合力逐渐减小,土压力分布的非线性程度逐渐增大;合力作用点位置随挡墙位移形态的变化而改变;在典型鼓胀形变位模式下,土压力呈R形分布。
- 柔性挡墙 /
- 位移模式 /
- 位移量 /
- 主动土压力 /
- 分布
Abstract: The previous studies have shown that the resultant and distribution of active earth pressures against flexible retaining walls vary with the modes and magnitudes of wall movement, and the distribution of earth pressures is significantly different from that of rigid walls. Based on the previous experimental and numerical results, a model to calculate the earth pressures on the flexible retaining walls is proposed, which can consider the effect of wall movement. A middle-state coefficient is introduced to reflect the influence of the modes and magnitudes of wall movement. The formulae of the coefficients of the resultant earth pressures on the flexible wall under any lateral deformation are presented. Then the soil behind the wall is simplified as the combination of nonlinear springs and a rigid plasticity object and the unit earth pressures and the heights of points of application of resultant forces are obtained. The comparisons among the proposed formula, previous methods and the experimental observations show that the results of the proposed method are more satisfactory than these of the previous methods. With the increase of the wall movement, the resultant active pressures decrease and the nonlinearity of the distribution of earth pressures augments gradually. The heights of points of application of resultant forces change with the mode of wall movement. The distribution of earth pressures exhibits a “R” shape under the drum deformation of the wall.
- flexible retaining wall /
- mode of movement /
- magnitudes of movement /
- active earth pressure /
- distribution

HTML全文

参考文献(16)

[1]	FANG Y S, ISHIBASHI I. Static earth pressures with various wall movements[J]. Journal of Geotechnical Engineering, 1986, 112(3): 317-333.
[2]	MATSUZAWA H, HARARIKA H. Analyses of active earth pressure against rigid retaining walls subjected to different modes of movement[J]. Soils and Foundation, 1996, 36(3): 51-65.
[3]	CHANG M F. Lateral earth pressures behind rotating walls[J]. Journal of Canadian Geotechniacal, 1997, 34: 498-509.
[4]	彭述权, 刘爱华, 樊玲. 不同位移模式刚性挡墙主动土压力研究[J]. 岩土工程学报, 2009, 31(1): 32-35. (PENG Shu-quan, LIU Ai-hua, FAN Ling. Active earth pressure for rigid retaining walls with different displacement modes[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(1): 32-35. (in Chinese))
[5]	王元战, 李蔚, 黄长虹. 墙体绕基础转动情况下挡土墙主动土压力分布[J]. 岩土工程学报, 2003, 25(2): 208-211. (WANG Yuan-zhan, LI Wei, HUANG Chang-hong. Distribution of active earth pressure with wall movement of rotation about base[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(2): 208-211. (in Chinese))
[6]	MILLIGAN G W E. Soil deformations near anchored sheet-pile walls[J]. Géotechnique, 1983, 33(1): 41-55.
[7]	陆培毅, 严驰, 顾晓鲁. 砂土基于室内模型试验土压力分布形式的研究[J]. 土木工程学报, 2003, 36(10): 84-88. (LU Pei-yi, YAN Chi, GU Xiao-lu. Sand model test on the distribution of earth pressure[J]. China Civil Engineering Journal, 2003, 36(10): 84-88. (in Chinese))
[8]	蔡奇鹏. 刚性与柔性挡墙的土压力研究[D]. 杭州: 浙江大学, 2007. (CAI Qi-peng. A study on the earth pressure against rigid and flexible retaining wall[D]. Hangzhou: Zhejiang University, 2007. (in Chinese))
[9]	王保田, 熊巨华, 朱碧堂. 围护结构变形模式对土压力的影响[J]. 岩土工程学报, 2006, 28(增刊): 1475-1480. (WANG Bao-jian, XIONG Ju-hua, ZHU Bi-tang. Effect of deformation modes of retaining structures on earth pressures[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(S0): 1475-1480. (in Chinese))
[10]	应宏伟, 蔡奇鹏. 鼓形变位模式下柔性挡土墙的主动土压力分布[J]. 岩土工程学报, 2008, 30(12): 1805-1810. (YING Hong-wei, CAI Qi-peng. Distribution of active earth pressure against flexible retaining walls with drum deformation[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(12): 1805-1810. (in Chinese))
[11]	ZHANG J M, SHAMOTO Y, TOKIMATSU K. Evaluation of earth pressure under any lateral deformation[J]. Soils and Foundation, 1998, 38(1): 15-33.
[12]	徐日庆. 考虑位移和时间的土压力计算方法[J]. 浙江大学学报, 2000, 34(4): 370-375. (XU Ri-qing. Methods of earth pressure calculation for excavation[J]. Journal of Zhejiang University, 2000, 34(4): 370-375. (in Chinese))
[13]	梅国雄, 宰金珉, 徐建. 考虑变形与时间效应的土压力计算方法研究[J]. 岩石力学与工程学报, 2001, 20(增刊1): 1079-1082. (MEI Guo-xiong, ZAI Jin-min, XU Jian. Earth pressure computing method lacement and time effect[J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(S1): 1079-1082. (in Chinese))
[14]	秦四清, 李晓. 非线性库仑主动土压力分析理论[J]. 岩石力学与工程学报, 2006, 25(12): 2399-2406. (QIN Si-qing, LI Xiao. Nonlinear theory on coulomb’s active earth pressure[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(12): 2399-2406. (in Chinese))
[15]	陈昌富, 曾玉莹, 肖淑君, 等. 基于CSA和薄层单元法主动土压力计算方法[J]. 岩石力学与工程学报, 2005, 24(增刊2): 5292-5296. (CHEN Chang-fu, ZENG Yu-ying, XIAO Shu-jun, et al. Calculation method of active earth pressure based on CSA and thin-layer element method[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(S2): 5292-5296. (in Chinese))
[16]	应宏伟, 蒋波, 谢康和. 考虑土拱效应的挡土墙主动土压力分布[J]. 岩土工程学报, 2007, 29(5): 717-722. (YING Hong-wei, JIANG Bo, XIE Kang-he. Distribution of active earth pressure against retaining walls considering arching effects[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(5): 717-722. (in Chinese))

施引文献

资源附件(0)

计量

文章访问数:
HTML全文浏览量: 0
PDF下载量:
被引次数: 0

柔性挡墙的主动土压力计算及分布研究 English Version

作者简介: 应宏伟(1971- ),男,博士,副教授,从事岩土工程的教学与科研工作。E-mail: ice898@zju.edu.cn。

计量

出版历程

Calculation and distribution of active earth pressure against flexible retaining walls

计量

出版历程

目录

作者简介:
应宏伟(1971- ),男,博士,副教授,从事岩土工程的教学与科研工作。E-mail: ice898@zju.edu.cn。