Earth Pressure on Non-cohesive Soil Retaining Wall Based on Large Principal Stress Trajectory

LI Min; CAO Wen-gui; WANG Lin-qing; ZHANG Hui-jie

doi:10.11988/ckyyb.20200326

PDF(1539 KB)

Journal of Changjiang River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (6) : 72-78. DOI: 10.11988/ckyyb.20200326

ROCKSOIL ENGINEERING

Earth Pressure on Non-cohesive Soil Retaining Wall Based on Large Principal Stress Trajectory

LI Min, CAO Wen-gui, WANG Lin-qing, ZHANG Hui-jie

Author information +

History +

Abstract

Friction at the contact surface between wall and soil is an important factor to be considered in analyzing the earth pressure of retaining wall. A novel method for analyzing the active earth pressure of retaining wall is proposed in consideration of the wall-soil friction based on static balance equation. First of all, the principal stress trajectory of soil behind the wall under the wall-soil friction effect is determined by studying the distribution of soil stress. On this basis, the trajectory is divided into curvilinear thin layers, and the change law of small principal stress of soil microelement is investigated. The method is verified with test data and compared with other methods. The sensitivity of active earth pressure coefficient to influential factors is also examined. Results demonstrate that the present method is rational and feasible as the distribution law of soil stress can be more accurately reflected by considering the stress deflection caused by wall-soil friction. The coefficient of active earth pressure reduces with the augment of internal friction angle φ of soil, while expands with the increment of friction angle δ between wall and soil.

Key words

retaining wall / active earth pressure / wall-soil friction / principal stress trajectory / curve layering

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

LI Min, CAO Wen-gui, WANG Lin-qing, ZHANG Hui-jie. Earth Pressure on Non-cohesive Soil Retaining Wall Based on Large Principal Stress Trajectory[J]. Journal of Changjiang River Scientific Research Institute. 2021, 38(6): 72-78 https://doi.org/10.11988/ckyyb.20200326

References

[1] КAгAH M E. O даелении на подпорную стенку при нелинейном его распределений[J]. Cтроителbная механика и расет сооружений, 1960, 6: 35-40.
[2] PAIK K H, SALGADO R. Estimation of Active Earth Pressure Against Rigid Retaining Walls Considering Arching Effects[J]. Geotechnique, 2003, 53(7): 643-645.
[3] GOEL S, PATRA N R. Effect of Arching on Active Earth Pressure for Rigid Retaining Walls Considering Translation Mode[J]. International Journal of Geomechanics, 2008, 8(2): 123-133.
[4] WANG Y Z. Distribution of Earth Pressure on a Retaining Wall[J]. Geotechnique, 2000, 50(1): 83-88.
[5] ZHOU Y T, CHEN Q S, CHEN F Q, et al. Active Earth Pressure on Translating Rigid Retaining Structures Considering Soil Arching Effect[J]. European Journal of Environmental & Civil Engineering, 2016, 22(8): 910-926.
[6] 俞缙, 周亦涛, 蔡燕燕,等. 基于土拱效应的刚性挡土墙墙后主动土压力[J]. 岩土工程学报, 2013, 35(12): 2306-2310.
[7] 王梅, 李镜培. 考虑土拱效应的刚性挡土墙主动土压力计算方法[J]. 岩土工程学报, 2013, 35(5): 865-870.
[8] 汪丁建, 唐辉明, 吴琼,等. 基于土拱效应的非饱和土主动土压力计算方法[J]. raybet体育在线院报, 2016, 33(8): 69-74.
[9] HANDY R L. The Arch in Soil Arching[J]. Journal of Geotechnical Engineering, 1985, 111(3): 302-318.
[10] WANG Y Z. Distribution of Earth Pressure on a Retaining Wall[J]. Geotechnique, 2000, 50(1): 83-88.
[11] 刘洋, 于鹏强. 刚性挡土墙平移模式的土拱形状与主动土压力分析[J]. 岩土力学, 2019, 40(2): 506-516,528.
[12] 刘忠玉, 陈捷, 李东阳. 考虑剪应力作用的刚性挡土墙主动土压力分析[J]. 岩土力学, 2016, 37(9): 2443-2450.
[13] 章瑞文, 徐日庆. 土拱效应原理求解挡土墙土压力方法的改进[J]. 岩土力学, 2008, 29(4): 1057-1060.
[14] MATSUZAWA H, HAZARIKA H.Analyses of Active Earth Pressure Against Rigid Retaining Wall Subjected to Different Modes of Movement[J]. Soils and Foundations, 1996, 36(3): 51-65.
[15] 王元战,李新国,陈楠楠.挡土墙主动土压力分布与侧压力系数[J].岩土力学,2005,26(7): 1019-1022.
[16] LI J P, WANG M. Simplified Method for Calculating Active Earth Pressure on Rigid Retaining Walls Considering the Arching Effect under Translational Mode[J]. International Journal of Geomechanics, 2013, 14(2): 282-290.
[17] CAO Wen-gui, LIU Tao, XU Zan. Calculation of Passive Earth Pressure Using the Simplified Principal Stress Trajectory Method on Rigid Retaining Walls[J]. Computers and Geotechnics, 2019, 109: 108-116.
[18] 杨明辉, 戴夏斌, 赵明华,等. 墙后有限宽度无黏性土主动土压力试验研究[J]. 岩土工程学报, 2016, 38(1): 131-137.
[19] HARROP-WILLIAMS K.Arching in Soil Arch[J]. Journal of Geotechnical Engineering,1989,115(3):415-419.
[20] CAO Wen-gui, LIU Tao, XU Zan. Estimation of Active Earth Pressure on Inclined Retaining Wall Based on Simplified Principal Stress Trajectory Method[J]. International Journal of Geomechanics, 2019, 19(7): 06019011.
[21] JANSSEN H A.Versuche Über Getreidedruck Getreidedruk in Silozellen[J]. Zeitshritt des Vereines Deutscher Ingenieure, 1895, 39(35): 1045-1049.