Abstract
Based on the characteristic that the potential sliding surfaces of rock slope are commonly in the shape of either line or fold line, analysis thought of conventional pile foundation in the flat ground under complex load condition was applied and the upper-bound theorem of limit analysis was used to compute thrust of rock layers with all possible distribution shapes. The interaction of slope and pile was considered design load in terms of slope thrust, and the finite difference method was derived to calculate inner-force and displacement of bridge pile foundation in rock slope under complex load condition. The result of example shows that the distribution model of slope thrust has certain impact on displacement and inner-force of bridge pile foundation. The maximum displacement growth rate reaches 54% and the maximum moment and shear growth rates reach only 15% and 20%, respectively, but the trends of inner-force and displacement of bridge pile foundation are basically the same as those of the conventional pile foundation in the flat ground. When the piles bear the same level lateral thrust, the distribution shapes of slope thrust have different influence on inner-force of pile foundation, especially the rectangle distribution, and the triangle thrust has the smallest displacement and inner-force of pile foundation.
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ZHAO Ming-hua, ZHANG Ling, YANG Ming-hui. Settlement calculation for long-short composite piled raft foundation [J]. Journal of Central South University of Technology, 2006, 13(6): 749–754.
MCCULLOUGH N J, DICKENSON S E. The behavior of piles in sloping rock fill at marginal wharves [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2004, 16(1): 1–10.
DYKEMAN P, VALSANGKAR A J. Model studies of socketed caissons in soft rock[J]. Can Geotech J, 1996, 33(2): 747–759.
KIMURA M, ZHANG F. Seimic evaluations of the pile foundation with three different methods based on three-dimensional elastoplastic finite element [J]. Journal of Japanese Geotechnical Society of Soils and Foundations, 2000, 40(5): 113–132.
SASTRY V V R N, MEYERHOF G G. Behavior of flexible piles in layered sands under eccentric and inclined loads [J]. Can Geotech J, 1994, 31(4): 513–520.
WU Hong-li. Study on calculation method of laterally loaded pile [J]. China Civil Engineering Journal, 1995, 28(2): 20–28. (in Chinese)
DAI Zi-hang, PENG Zhen-bing. Finite difference method based on “m-k” method for calculation of internal forces of a whole stabilizing pile [J]. Rock and Soil Mechanics, 2002, 23(3): 321–324. (in Chinese)
ZHAO Ming-hua, HOU Yun-qiu, CAO Xi-ren. Study on the behavior of inclinedly loading piles [J]. Journal of Hunan University, 1997, 24(2): 98–102. (in Chinese)
HOU Yun-qiu, ZHAO Ming-hua, CAO Xi-ren. Study on bearing capacity of inclined loading piles[J]. Central South Highway Engineering, 1998(1): 39–42. (in Chinese)
XU Liang-de, YIN Dao-cheng, LIU Hui-ming. Resistance distribution before pile when landslide body is clay [M]. Beijing: China Railway Press, 1990: 92–99.(in Chinese)
DAI Zi-hang. Study on distribution laws of landside-thrust and resistance of sliding mass acting on anti-slide piles [J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(4): 517–521. (in Chinese)
WAISH J B. Effect of pore pressure and confining pressure on fracture permeability [J]. Int J Rock Mech Min Sci Geomech Abstr, 1991, 28(5): 429–435.
BANDIS S C, LUMSDEN A C, BARTON N R. Fundamentals of rock joint deformation [J]. Int J Rock Mech Min Sci Geomech Abstr, 1983, 20(6): 249–268.
WANG Zai-quan. Stability research of complex slope engineering system [M]. Xuzhou: China University of Mining and Technology Press, 2000. (in Chinese)
CHEN Wei-fa, LIU Xi-la. Limit analysis in soil mechanics [M]. Amsterdam: Elsevier Science, 1990.
YU H S, SALGADO R, SLOAN S W, KIM J M. Limit analysis versus limit equilibrium for slope stability [J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 1998, 124(1): 1–11.
DUNCAN J M. State of the art: Limit equilibrium and finite element analysis of slope [J]. Journal of Geotechnical Engineering, ASCE, 1996, 122(7): 577–595.
CHEN L T, POULOS H G. Piles subjected to lateral soil movements [J]. Journal of Geotechnial and Geoenvironmental Engineering, ASCE, 1997, 123(9): 802–811.
MEZAZIGH S, LEVACHER D. Laterally loaded piles in sand: Slope effect on p-y reaction curves [J]. Can Geotech J, 1998, 35(3): 433–441.
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Foundation item: Project(50578060) supported by the National Natural Science Foundation of China
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Zhao, Mh., Liu, Jh., Liu, Dq. et al. Force analysis of pile foundation in rock slope based on upper-bound theorem of limit. J. Cent. South Univ. Technol. 15, 404–410 (2008). https://doi.org/10.1007/s11771-008-0076-x
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DOI: https://doi.org/10.1007/s11771-008-0076-x