Single Micro Pile in Debris Landslide Anti-Sliding Mechanism Model Test Research

Abstract:

Micro-piles are widely used because of its own advantages, but relatively few theoretical studies about its anti-slide mechanism. Firstly, the mechanical properties of the model pile into calibration tests, to get of elastoplastic session elastic modulus, were 0.69×10⁴MPa and 0.04×10⁴MPa.Through the different pile spacing under a single row of miniature pile reinforcement debris landslide indoor model experiment to study the micro-piles against sliding mechanism. The test results show that: different pile spacing, single row of micro-pile soil pressure mainly concentrated in the range of slip surface more than 1/3 of the pile. The smaller pile spacing, soil arching effect, the greater the micro pile skid failure critical moment, the micro pile can withstand landslide thrust the greater skid the better.

• Periodical: Advanced Materials Research (Volume 743)
• Pages: 237-243
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.743.237
• Online since: August 2013
• Authors: Qiang Cai, Ji Ming Kong, Yin Zhang
• Keywords: Critical Moment, Debris Landslide, Landslide Thrust, Micro-Pile, Soil Arching

References

[1] Wang Gong-xian. Present situation of engineering measures for preventing and controlling landslide in China and Abroad[J]. The Chinese Journal of Geological Hazard and Control. 1998, 9(l): 1～9.

[2] Kong Jiming. The Model Test Research of Breakdown Process of Layue Landslide on the Highway From Sichuan to Tibet[J]. Journal of Mountain Science. Vol. 21, Supplement p.133～138.

[3] LEI Wenjie, ZHENG Ying-ren, FENG xiating. Analysis of pile location on landslide control[J]. Rock and Soil Mechanics. 2006, 27(6): 950～954.

[4] Wang Shi-chuan, Chen Li-xin, Zhang Jin. The analysis of elastic-plastic design theory of anti-slidepiles(II)[J]. Journal of Xi'an University of Architecture & Technology 1997, 29(4): 426～429.

[5] CHENG Yong-gang. Current situation and developments of landslide study in China in recent twenty years[J]. Journal of Geological Hazards and Environment Preservation. 2003, 14(4): 1～5.

[6] Heyman L, Boersma L. Bending moments in piles due to lateral earth pressures[J]. Proc. 5th Int. Conf. on Soil Mech. and Found. Eng., 1961，2: 425～429.

[7] Ito T, Matsui T. Methods to estimate lateral force acting on stabilizing piles[J]. Soil and Foundations, 1975, 15 (4): 43～59.

DOI: 10.3208/sandf1972.15.4_43

[8] Chen L, Poulos H G. Analysis of pile-soil interaction under lateral loading using infinite and finite elements[J]. Computers and Ceotechnics, 1993, 15 (4): 189～220.

DOI: 10.1016/0266-352x(93)90001-n

[9] Lee C Y, Hull T S, Poulos H G. Simplified pile-slope stability analysis[J]. Computers and Geotechnics, 1995, 17 (1): l～16.

DOI: 10.1016/0266-352x(95)91300-s

[10] Cantoni R., Collotta T, Ghionna V N, et al. A design method for reticulated micropiles structure in sliding slopes[J]. Ground Engineering, 1989, 22(1): 41～47.