Numerical Simulation for Uplift Bearing Capacity and Affecting Factors of the Digging Piles in Slope Ground

Abstract:

Based on the numerical simulation method, this paper has established the numerical simulation method by using of finite difference software of FLAC3D through establishing interface for digging pile-soil. It can consider mutual effect of digging pile-soil. The uplift bearing capacity of the digging pile in slope ground was calculated and the affecting factors of the bearing capacity were analyzed. The results show that the uplift bearing capacity has a negative correlation with the slope ratio, and has a positive correlation with the width or height of the foundation, which can be expressed as a quadratic polynomial. But when the slope ratio is smaller than a certain extent, the capacity no longer increases. Nonlinear regression analysis of calculation data are carried out. Finally, the calculation method of uplift bearing capacity about pile in the slope is developed, which can provide a reference to specification revision and engineering.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 1292-1295
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.1292
• Online since: September 2013
• Authors: Xing Yun Wang*, Bin Peng, Xiao Chao Tang, Lian Fan
• Keywords: Affecting Factors, Digging Piles, Numerical Simulation, Uplift Bearing Capacity

References

[1] WANG Xi-wu, PENG Jian, CAO Zheng-cong, Numerical simulation and regression analysis of undisturbed soil digging foundation considering soil resistance [J]. Engineering Journal of Wuhan University, 2008(07): 139-143.

[2] WANG Xue-ming, WANG Hu-chang, HU Jian-min. Modification of theoretical calculation Formulas on withdrawal Resistance of undercut Foundation for transmission line [J]. Advances of Power System & Hydroelectric Engineering, 2007(9): 39-45.

[3] XING Yue-long, SHEN Jian-guo, ZHOU Fu-yuan. Experimental study of excavated foundation loading mechanisms [J]. Electric Power Construction, 2008, 29(2) : 22-29.

[4] LIU Tian-xin, LU Xian-long. Numerical simulation on anti-overfurning characteristics of undisturbed soil foundation in transmission Line [J]. Electric Power Construction. 2007(02): 16-19.

[5] HAO Dong-xue, FAN Guang-sen, JIANG Chun-bao. Transmission Line digging foundation uplift bearing Numerical Analysis [J]. Water Resources and Power, 2012(8): 151-154.

[6] LIU Han-sheng, JIN Li, FANG Qing. Mechanics analysis and numerical simulation for excavated foundation loaded laterally in power transmission line [J]. Electric Power Construction. 2010 (03): 21-25.

[7] 《Engineering Geology HandbookEditorial Board》. Engineering Geology Manual [M]. Beijing: China Building Industry Press, (2007).

[8] Itasca Consulting Group Inc. FLAC2D(Fast Lagrangian Analysis of Continua)User's Guide[DB]. (2001).