Structural Analysis and Design of Slipway Floor with Anchor Jacked Piles

Abstract:

The rapid advance of shipbuilding industry generates greater demands on port and waterway engineering. The reconstruction and maintenance of infrastructure supporting shipbuilding industry also has aroused extensive attention. Since the tonnage of ship increases, the bearing capacity of slipway floors can’t meet the working requirement with the moving load of ships. As for the bearing capacity insufficiency, grouting, anchor jacked piles and bored piles are generally used. However, the anchor jacked pile has better practicality and applicability for easier to control construction quality and smaller damage to the original slipway floor. At present, methods based on Winkler foundation model have been more popular in the engineering practice. But Winkler foundation model can’t consider the interaction between pile and soil, the calculated structural internal force of slipway floor is far from the truth. In order to correct Winkler foundation model imperfections in this aspect, this paper provided the method of equivalent bedding value. In terms of area weighted means, the equivalent bedding value of pile and soil in the influence area would be got. Then this weighted area of pile and soil and other areas of soil could be equivalent to springs with different stiffness coefficients for calculating the structural internal force of slipway floor. To some degree, this method reduced the stress concentration on the top of piles and was closely to the reality, remedying some weaknesses of Winkler foundation model. This method may have definite reference value for foundation plate design in engineering application.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 185-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.185
• Online since: January 2014
• Authors: Can Mei, Xu Dong Fu*, Ben Jiao Zhang
• Keywords: Anchor Jacked Pile, Equivalent Bedding Value, Numerical Simulation, Slipway Floor, Winkler Model

References

[1] SHI Peidong, GU Xiaolu, GAO Dazhao, et al. Pile and pile foundation handbook [M]. Beijing: China Communications Press, 2008. (in Chinese).

[2] ZHANG Bin, WANG Zhao, PENG Yaming, et al. Prospect for constitutive model of soil [J]. Journal of Guilin Institute of Technology, 2003, 23(3): 274-278. (in Chinese).

[3] WANG Kai, SHI Duanwen, LIANG Kai. The soil misalignment resilience model and simplification [J]. Shanxi Architecture, 2008, 34(32): 106-108. (in Chinese).

[4] ZHENG Yingren, CHEN Yuyao, DUAN Jianli. Loading-unloading criterions and constitutive models in generalized plastic mechanics [J]. Rock and Soil Mechanics, 2000, 21(4): 426–429. (in Chinese).

[5] Winkler E. Theory of Elasticity Strength [M]. Prague: H. Dominicus, 1867.

[6] MO Haihong, YANG Xiaoping. Foundation engineering (Second Edition) [M]. Beijing: China Building and Architecture Press, 2008. (in Chinese).

[7] Cooke R W, Price G, Tarr K. Jacked piles in London Clay: a study of load transfer and settlement under working conditions [J]. Geotechnique, 1979, 29(2): 113-147.

DOI: 10.1680/geot.1979.29.2.113

[8] Poulos H G, Mattes N S. Settlement and load distribution analysis of pile groups [J]. Austral. Geomech.J., 1(1), 18-28.

[9] ZAI Jinmin. Nonlinear interaction between high-rise building and pile group foundation—Research of composite pile foundation theory and application [M]. Shanghai: Tongji University Press, 2007. (in Chinese).

[10] LIU Jinli, CHI Lingquan. The modified model of pile–soil deformation calculation and variable rigidity design method for balance settlement [J]. Chinese Journal of Geotechnical Engineering, 2000, 22(2): 151-157. (in Chinese).

[11] WANG Tao. Research of model tests on pile-soil interaction influence [J]. rock and soil mechanics, 2008, 29(6): 1589-1592. (in Chinese).

[12] Bowles Joseph E. Foundation analysis and design [M]. New York McGraw-Hill Companies, Inc, (1996).

[13] JGJ 72-2004 Specification for geotechnical investigation of tall buildings [S]. Beijing: China Building and Architecture Press, (2004).

[14] ZHONG Suoqing, ZHANG Xiping, PAN Haili. Study on foundation soil coefficient of subgrade reaction [J]. Chinese Journal of Underground Space and Engineering, 2005, 1 (3): 1109-1112. (in Chinese).

[15] SHU Xiang, HUANG Yu, CHEN Zhuchang. Nonlinear analysis for the axial stiffness of single pile [J]. Journal of Tongji University, 2001, 29 (10): 1142-1146. (in Chinese).

[16] PAN Shisheng, HOU Xueyuan. Computation of pile head stiffness [J]. Chinese Journal of Geotechnical Engineering, 1996, 18 (1): 1-6. (in Chinese).