The Numerical Analysis of Gravel Pile Reinforcing Liquefiable Silt

Abstract:

A three-dimensional numerical simulation about gravel pile reinforcing liquefiable silt foundation was built, and the influence of gravel pile on the liquefiable silt anti-liquefaction was discussed. Results show that under seismic load, gravel pile has obvious cushioning effect, and compared with natural foundation, the maximum horizontal vibration acceleration of the gravel pile composite foundation surface layer is obviously decreased; drainage effect of gravel pile is very significant and the larger is the gravel pile permeability coefficient, the better is the drainage effect; as earthquake intensity largens, silt liquefaction scope increases; of both natural foundation and composite foundation, the pore pressure ratio variation with depth is that the middle is bigger than the top and bottom, and middle layers are more likely to be liquefied; the greater is the seismic acceleration, the larger is the shear stress.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 265-269
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.265
• Online since: August 2013
• Authors: Dong Hua Ruan, Yan Mei Zhang, Zhen Wang, Chun Xia Huang
• Keywords: Gravel Pile, Numerical Analysis, Pore Pressure Ratio, Silt Liquefaction

References

[1] Liu Kuyiyan, Luo Hezhen, Ban Chixiulang. Prediction and solution of replaction sand in water door of city lai. Soil and Foundation, 1975, 6 (23) : 11-16.

[2] Sasaki, Y. & Taniguchi, E. . Shaking table tests on gravel drains to prevent liquefaction of sand deposits [J]. Soil and Foundations, 1982, 22 (3) : 1-14.

DOI: 10.3208/sandf1972.22.3_1

[3] Wang Shifeng. The experiment study of the building liquefiable sand foundation reinforced by gravel drainage pile. The Master Degree Dissertation of the Metallurgical Ministry Building Academe, (1984).

[4] Baez, J. I. . A design model for the reduction of soil liquefaction by vibro-stone columns[D]. Ph. D. Dissertation, University of Southern California, Los Angles, CA, (1995).

[5] Lin Baihai, Xie Dingyi. The check theory of composite foundation liquefaction and its application. Beijing: China Water Hydroelectricity Press, (1999).

[6] Korhan Adlier. Ahmed Elgamal. Mitigation of liquefaction and associated ground deformation by stone columns [ J ]. Engineering Geology, 2004, 72, 275-291.

DOI: 10.1016/j.enggeo.2003.11.001