Soil Pressure Test and Numerical Analysis on Reinforced Earth Retaining Wall of Green Gabion

Abstract:

Based on reinforced earth retaining wall of green gabion which is built at the site of seventh project Shaoxing-Zhuji Expressway, the research for soil pressure in a cross section which locate at the site of K38+398kmare made by field test and numerical analysis. The horizontal and vertical earth pressure are studied in the construction, The pressures between field test and numerical analysis which depend on FLAC^3D are rough similar. With increased of height in filling soil, the earth pressures on the wall toe in 3 direction such as horizon , vertical, 45°are increased ,and then gradually come to stability after construction. With increased of height in filling soil, the vertical earth pressures is increased, but the distribution for earth pressure at the same height is non-uniform. The horizontal earth pressure on the back of wall surface increases fast at first then decreases a little, which is a single peak-shaped, it distributes along the wall height in non-linear form, the maximum occurs at 1/3H. The result between field test and numerical model are different, because the flexible wall surface has a great affection on unload.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 5039-5045
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.5039
• Online since: September 2014
• Authors: Xiao Yang*, Guo Lin Yang
• Keywords: FLAC3D Numerical Analyse, Horizontal, Reinforced Earth Retaining Wall of Green Gabion, Site Test, Vertical Earth Pressure

References

[1] Lin Yuliang, Yang Goulin, Li Yun, Fang Wei. Mechanical characteristics of geosynthetics under tensile load[J]. China Railway Science, 2009, 05: 9-14.

[2] Lin Yuliang, Yang Goulin, Li Yun, Huang Xiangjing. Research on dynamic deformation characteristics of reinforced gabion retaining wall under repeated load[J]. Journal of Rock Mechanics and Engineering, 2009, S2: 4027-4033.

[3] Srikongsri A. Analytical model of interaction between hexagonal wire mesh and silty sand backfill[J]. M. Eng Thesis, Asian Institute of Technology, Bangkok, Thailand, (1999).

DOI: 10.1139/t01-019

[4] Kongkitkul W. Numerical and analytical modeling on pullout capacity and interaction of in-soil pullout tests between hexagonal wire mesh reinforcement and silty sand[J]. M. Eng Thesis, Asian Institute of Technology, Bangkok, Thailand, (2001).

DOI: 10.1139/t03-038

[5] MIR E N. Pullout and direct shear test of hexagonal wire mesh reinforcement in various fill materials including lahar from Mt. Pinatubo, Philipines[D]. Bangkok: Asian institute of Technology, (1999).

[6] BERGADO D T, TEERAWATTANASUK C, YOUWAI S. et al. Finite element modeling of hexagonal wire reinforced embankment on soft clay. Canadian Geotechnical Journal . 2000, 37: 1209-1226.

DOI: 10.1139/t00-065

[7] Yang Guolin, Lin Yuliang , Li Yun . Test Study on deformation characteristics of new type reinforced soil retaining wall[J]. Journal of Vibration and Shock , 2010, 29(1): 223-227.

[8] Liu Ze, Yang Guolin, Shen Chao, Xu Jiannan. Field Test Study on green gabion reinforced retaining wall[J]. Journal of Central South University (natural science edition), 2012, 02: 709-716.