Abstract：Research purposes: In order to comply with the demands of road, lots of pile foundation of bridge are built on high and steep slope in plateau area. The load on the pile foundation of the pier located on slope is more complex because of the influence of the horizontal resistance of slope soil Program, the slope-pier cap-pile foundation mechanical behavior on the piles. By using the nonlinear finite element analysis model is built on consideration of the non-linear influences of the materials and pile-soil touch to study the mechanical behavior of the slope-pile cap-pile foundation system under conditions of dead load and combined loads from the areas of the load bearing capacity, deformation and stresses of the system.
Research conclusions: From the analysis of the calculation example, it is concluded: (1)For bridge pier with pile foundation on slope, the horizontal resistance of the slope has rather big influence on the pile foundation bearing the load and the displacement and stress of the pile foundation are of nonuniformity along the slope. (2)For multi-layered soil slope, the displacement and stress of the pile foundation sharply change in the parting region of soil layers and the pile foundation has an unfavorable load bearing area in the parting region of soil interlayers. (3)The research method and results presented in this paper can provide the reference to design and mechanical analysis of the pile foundation of bridge on slope.
蔺鹏臻，武发辉，杨子江. 考虑边坡效应的铁路桥墩桩基力学行为分析[J]. 铁道工程学报, 2013, 30(9): 47-52.
LIN Peng-zhen, WU Fa-hui, Yang Zi-jiang. Analysis of Mechanical Behavior of Pile Foundation of Railway Bridge Pier on Consideration of Slope Effect. Journal of Railway Engineering Society, 2013, 30(9): 47-52.
Zhao Minghua, Liu Jianhua, Yang Minghui. Inner-force Calculation of Bridge Pile Foundation in High-steep Rock Slope under Inclined Loads [J]. Chinese Journal of Rock Mechanics and Engineering, 2006(11):2352-2357.
Liu Jianhua, Zhao Minghua, Yang Minghui. Model Tests on Bridge Pile Foundation in High and Steep Rock Slopes[J]. Chinese Journal of Geotechnical Engineering, 2009(3):372-377.
Chen Weibing, Zheng Yingren, Lei Wenjie. Three Dimensional FEM Simulation of Slope Reinforcement by Deeply-buried Pile[J]. Rock and Soil Mechanics, 2007(s1):273-276.
Wei Lide, Yang Chunhe, Gao Changsheng. Optimization of Slide-resistant Piles Based on Strength Reduction Method with 3D FEM[J]. Chinese Journal of Geotechnical Engineering, 2005(11):1350-1352.
Huang Xuefeng, Chen Zhenghan, Ha Shuang, etc. Research on Bearing Behaviors and Negative Friction Force for Filling Piles in the Site of Collapsible Loess with Big Thickness[J]. Chinese Journal of Geotechnical Engineering, 2007(3):338-346.
Xiong Zhongming, Wang Sheliang, Li Xiaojian, etc. Application of the Unified Strenth Theory to Superstructure Pile Soil Interaction in Collapsible Loess[J]. China Civil Engineering Journal,2005(9):103-108.
Wang Wei, Yang Min. Vertical Deformation Analysis of Pile Group Based on Variational Theory [J]. Chinese Journal of Geotechnical Engineering, 2005(9):1072-1076.
[8]Mohamed Ashour, Hamed Ardalan. Employment of the P-multiplier in Pile-group Analysis[J]. Bridge Eng, 2011(5):612-623.
[9]江见鲸, 陆新征, 叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
Jiang Jianjing, Lu Xinzheng, Ye Lieping. Finite Element Analysis of Concrete Structures[M]. Beijing: Tsinghua University Press, 2005.
Zheng Yingren, Zhao Shangyi, Song Yakun. Advance of Study on the Strength Reduction Finite Element Method[J]. Journal of Logistical Engineering University, 2005(3):1-6.
[11]Mechanics Group. ANSYS User Material Subroutine USERMAT [R]. Canonsburg: ANSYS Incorporated, 1999.
2013, Vol. 30 
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