Research on Bearing Characteristics of the Digging Foundation in Slopes Based on Interface

Abstract:

The numerical simulation model was established by using numerical simulation tools of FLAC3D, through establishing interface for digging foundation-soil, which can consider mutual effect of digging foundation-soil. Bearing capacities of the digging foundation in slopes is calculated. The affecting factors of the bearing capacity are analyzed. The results show that the bearing capacity has a positive correlation with the distance between the foundation and the slope and has a negative correlation with the slope ratio, which can be expressed as a quadratic polynomial. Nonlinear regression analysis of calculation data are carried out and the fitting formula of the capacity ratio between pile in the slope and pile in the flat is obtained. Finally, the calculation method of horizontal 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: 2040-2044
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.2040
• Online since: September 2013
• Authors: Bin Peng, Yi Min Shang, Rui Shan Tan, Tao Mei
• Keywords: Bearing Characteristic, Digging Foundation, Finite Difference Method (FDM), Interface

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] 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.

[3] 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.

[4] 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.

[5] 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.

[6] 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.

[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).