›› 2005, Vol. 26 ›› Issue (4): 633-637.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on geogrid-reinforced and pile-supported embankment over gulch weak subsoil

YAN Shu-wang, ZHOU Hong-jie, CUI Wei, FENG Shou-zhong   

  1. Institute of Geotechnical Engineering, Tianjin University, Tianjin 300072, China
  • Received:2003-11-05 Online:2005-04-09 Published:2013-12-19

PDF (PC)

1128

Abstract: The popular and traditional method of foundation treatment in mountainous areas is to adopt the system of piles. But in some conditions such as existence of the thick mud layer, it is not perfect to use the pile group solely. This paper presents a new combinational foundation system, using geogrids and compacted soil-cement piles to improve the weak subsoil in the mountainous areas. Through the plane strain finite element method, the behavior and mechanism of improved embankment are studied and some useful functions of the geogrid are found in the composite subsoil. For example, the geogrid behaves like a tensioned membrane. It can significantly reduce the differential settlement between the pile head and the surrounding soil and side displacement of the embankment. With the help of the geogrid, the limit bearing capacity of the subsoil is promoted considerably. It has been found that the geogrid has less influence on the embankment settlement. In addition, the largest effective stress appears near the bottom of the piles due to the negative surface friction existing between the soil-cement piles and the subsoil.

Key words: gulch weak subsoil, compacted soil-cement pile, geogrid, FEM, negative friction

CLC Number: 

  • TU 473
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
[1] WANG Xiang-nan, LI Quan-ming, YU Yu-zhen, YU Jia-lin, LÜ He, . Simulation of the failure process of landslides based on extended finite element method [J]. Rock and Soil Mechanics, 2019, 40(6): 2435-2442.
[2] YIN Feng, ZHOU Hang, LIU Han-long, CHU Jian, . Experimental investigation on dynamic characteristics of XCC pile-geogrid composite foundation under static and dynamic loads of vehicles [J]. Rock and Soil Mechanics, 2019, 40(4): 1324-1330.
[3] WANG Jia-quan, ZHANG Liang-liang, LAI Yi, LU Meng-liang, YE Bin, . Large-scale model tests on static and dynamic mechanical characteristics of reinforced earth retaining wall [J]. Rock and Soil Mechanics, 2019, 40(2): 497-505.
[4] LIU Fang-cheng, WU Meng-tao, YANG Jun, . Experimental study of strength characteristics of geogrid reinforced rubber sand mixtures [J]. Rock and Soil Mechanics, 2019, 40(2): 580-591.
[5] WANG Jun, SHI Jing, LIU Fei-yu, CAI Yuan-qiang, . Effect of particle gradation on static and dynamic direct shear properties of geogrid-sand interface [J]. Rock and Soil Mechanics, 2019, 40(1): 109-117.
[6] WANG Yi-min, YAN Cen, YU Heng, LI Qi. Experimental study of soil stress characteristics of geogrid-reinforced widened embankment under static loadings [J]. , 2018, 39(S1): 311-317.
[7] HAN Bing, LIANG Jian-wen, ZHU Jun，. Effect of lenticle on seismic response of structures in deep water-saturated poroelastic soft site [J]. , 2018, 39(6): 2227-2236.
[8] JIANG Wen-yu, LIU Yi, . Determination of neutral plane depth and pile-soil stress ratio of the rigid pile composite foundation [J]. Rock and Soil Mechanics, 2018, 39(12): 4554-4560.
[9] LI Zhi-yuan, LI Jian-bo, LIN Gao, . Research on influence of partial terrain to scattering of Rayleigh wave based on SBFEM [J]. , 2018, 39(11): 4242-4250.
[10] WANG Jia-quan, ZHANG Liang-liang, LIU Zheng-quan, ZHOU Yuan-wu. Large model test on geogrid reinforced sand soil foundation under dynamic loading [J]. , 2018, 39(10): 3539-3547.
[11] LIU Zhen-ping, DU Gen-ming, CAI Jie, ZHOU Fan, LIU Jian, BIAN Kang，. Seamless coupling method of 3DGIS combined with 3DFEM simulation based on MeshPy [J]. , 2018, 39(10): 3841-3852.
[12] ZOU De-gao, LIU Suo, CHEN Kai, KONG Xian-jing, YU Xiang,. Static and dynamic analysis of seismic response nonlinearity for geotechnical engineering using quadtree mesh and polygon scaled boundary finite element method [J]. , 2017, 38(S2): 33-40.
[13] HE Wei-jie, YANG Dong-ying, CUI Zhou-fei. Comparison of theoretical and numerical solution for vertical vibration of a pile considering transverse inertia effect [J]. , 2017, 38(9): 2757-2763.
[14] WANG Zhi-jie, FELIX JACOBS, MARTIN ZIEGLER，. Influence of geogrid transverse members on strength and deformation behavior of reinforced granular soil [J]. , 2017, 38(8): 2234-2240.
[15] YAN Cheng-zeng. A new two-dimensional FDEM-flow method for simulating hydraulic fracturing [J]. , 2017, 38(6): 1789-1796.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TANG Ming-ming, WANG Zhi-yin, MA Lan-ping, ZENG Zhi-hua, ZHANG Zhi-pei. Study of design parameters of oil-gas pipeline traversing loess gully[J]. , 2010, 31(4): 1314 -1318 .
[2] XU Ming, CHEN Jin-feng, SONG Er-xiang. Large scale triaxial testing of Douposi moderately-to-slightly weathered fill materials[J]. , 2010, 31(8): 2496 -2500 .
[3] LIN Hang，CAO Ping，LI Jiang-teng，JIANG Xue-liang，HE Zhong-ming. Deformation stability of three-dimensional slope based on Hoek-Brown criterion[J]. , 2010, 31(11): 3656 -3660 .
[4] WEI Ning，LI Xiao-chun，WANG Yan，GU Zhi-meng. Resources quantity and utilization prospect of methane in municipal solid waste landfills[J]. , 2009, 30(6): 1687 -1692 .
[5] NIU Wen-jie，YE Wei-min，LIU Shao-gang，YU Hai-tao. Limit analysis of a soil slope considering saturated-unsaturated seepage[J]. , 2009, 30(8): 2477 -2482 .
[6] WANG Ke-liang, LIU Ling, SUI Tong-bo , XU Yun-hai, HU Ting-zheng. Experiment research on anti-shear(cut)performance of dam bedrock-rubber powder modified concrete in-situ[J]. , 2011, 32(3): 753 -756 .
[7] LIN Da-ming1,2，SHANG Yan-jun1，SUN Fu-jun3，SUN Yuan-chun1,2，WU Feng-bo1,2，LIU Zhi. Study of strength assessment of rock mass and application[J]. , 2011, 32(3): 837 -842 .
[8] WU Jian，FENG Shao-kong，LI Hong-jie. Study of automatically extracting structural plane parameters from borehole images[J]. , 2011, 32(3): 951 -957 .
[9] JIN Xu-hao , LU Wen-bo , TIAN Yong , YAN Peng , CHEN Ming. Analysis of mechanisms of S wave generated in rock blasting process[J]. , 2011, 32(S2): 228 -232 .
[10] LI Jian-jun，SHAO Sheng-jun，YANG Fu-yin，YANG Chun-ming. Experimental research on impermeable characteristics of slurry cake in cutoff wall hole of coarse-grained soil[J]. , 2012, 33(4): 1087 -1093 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd