The short rigid piles are located on the top of slope and subjected to the incline load. Both the cross effects produced by horizontal and vertical loads and the effect of the slope are needed to be considered in the design. Because of several factors interacting each other, far more complex than that of piles installed in horizontal ground. This paper adopts three-dimensional finite element software and carries out numerical simulation analysis of composite piles by taking into account of many factors. The study finds that under the same load and with the increase of the angle of the composite load, the ultimate bearing capacity firstly decreases and then increases. The influence of the vertical load on the horizontal displacement of the pile is greater than that of the internal force. Increasing the pressure of soil around piles will lead to the promotion of pile displacement and internal force. With increasing of edge distance from the slope crest, the effect will decrease.
. ANALYSIS OF DESIGN ELEMENTS OF INCLINE LOAD SHORT RIGID PILE IN SLOPE CREST ZONE[J]. Journal of Engineering Geology, 2017, 25(6): 1593-1602.
Cheng L Y,Chen S X,Yu F,et al. 2013. Numerical simulation for vertical ultimate capacity and influencing factors of oblique slope pile under vertical loads[J]. Science Technology and Engineering, 13 (18):5399~5403.
Cheng L Y,Xu X C,Chen S X,et al. 2014. Model test and numerical simulation of horizontal bearing capacity and impact factors for foundation piles in slope[J]. Rock and Soil Mechanics, 35 (9):2685~2691.
Karthigeyan S,Ramakrishna V V G S T,Rajagopal K. 2007. Numerical investigation of the effect of vertical load on the lateral response of piles[J]. Journal of Geotechnical & Geoenvironmental Engineering, 133 (5):512~521.
Liang F Y,Liao C C,Mao L,et al. 2013. Model tests on the behavior of a single pile under vertical-horizontal load[J]. Building Structure, 43 (6):92~94.
Liang F Y,Yu F,Huang M S. 2011. A simplified analysis method for an axially loaded single pile subjected to lateral soil movement[J]. Journal of Tongji University(Natural Science), 39 (6):807~813.
Lu Z J,Nian T K. 2009. Inner-force and displacement analyses of inclined loaded piles located near slopes[J]. Journal of Yanshan University, 33 (6):535~540.
Lu Z J. 2008. The Study of Bearing performance analysis and laboratory model test on the inclined loaded piles located near slopes[D]. Dalian:Dalian University of Technology.
Nian T K,Lu Z J,Yang Q. 2010. Laboratory model test study for the perform ance of inclined piles at slope top[J]. China Civil Engineering Journal, 43 (1):89~94.
Randolph M F,Wroth C P. 2015. Application of the failure state in undrained simple shear to the shaft capacity of driven piles[J]. Géotechnique, 31 (1):143~157.
Sawant V A,Shukla S K. 2014. Effect of Edge Distance from the Slope Crest on the Response of a Laterally Loaded Pile in Sloping Ground[J]. Geotechnical and Geological Engineering, 32 (1):197~204.
Yin W X,Yao W J,Cheng K Z. 2009. Numerical investigation on interaction of axial and lateral response for super-long pile[J]. Hybro-Science and Engineering,(2):15~20.
Zhao M H,Liu J H,Yang M H. 2006. Inner-force calculation of bridge pile foundation in high-steep pock slope under inclined loads[J]. Chinese Journal of Rock Mechanics and Engineering, 25 (11):2352~2357.
Zhao M H,Wu L G,Liu J H. 2007. Inner-force and displacement analyses of load-bearing and anti-slide piles by p-y curve method[J]. Chinese Journal of Rock Mechanics and Engineering, 26 (6):1220~1225.
Zhao M H. 1987. The calculation of piles under simultaneous axial and lateral loading[J]. Journal of Hunan University(Natural Science Edition), 14 (2):68~81.
Zheng G,Wang L. 2008. Effect of loading level and sequence of vertical and lateral load on bearing capacity of single pile[J]. Chinese Journal of Geotechnical Engineering, 30 (12):1796~1804.
Zheng G,Wang L. 2009. Finite element analysis of bearing capacity of pile under inclined load in layered soil[J]. Rock and Soil Mechanics, 30 (3):680~687.