Nonlinear Analysis of Interaction of Superstructure-Pile-Raft-Soil System in Layered Soil — Part I: Formulation of Interaction Equation

Abstract:

The layered soil model is used to simulate the nonlinear performances of the layered soil in this paper. Using the shear-displacement method, the flexibility coefficients of the pile-pile and the pile-soil are deduced based on the interaction mechanism of the pile-pile and the pile-soil in the layered soil. After that, the stiffness matrix of the pile-soil system can be established. Using coupling method presented in this paper, the interaction equation of superstructure-pile-raft-soil system is formulated. The interaction equations are used to analyze the reaction force on the pile head and the displacement characteristics of the raft of the piled-raft foundation in the layered soil and its practicality is excellent.

• Periodical: Key Engineering Materials (Volumes 400-402)
• Pages: 651-658
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.400-402.651
• Online since: October 2008
• Authors: Jun Chen, Yong Hong Chang, Yin Sheng Zou
• Keywords: Displacement Characteristics, Interaction, Layered Soil Model, Shear Displacement Method

References

[1] Mylonakis G. and Gazetas G. Settlement and additional internal forces of grouped piles in layered soil. Geotechnique, 1998, Vol. 48, No. 1: 55-72.

DOI: 10.1680/geot.1998.48.1.55

[2] Chen Renpeng. Study on Behavior of Pile-raft Foundation in Soft Soil and Its Design Method.

[3] People's Republic of China Construction Department. GB5007-2002. Code for Design of Building Foundation [S]. Beijing: China Architecture Industry Press, 2002. (in Chinese).

[4] Braja M. Advanced soil mechanics. MoGraw-Hill Book Company, (1983).

[5] Long Yuqiu and Xin Kegui. Generalized conforming element for bending and bucking analysis of pate [J]. Finite Element in Analysis and Design, 1989, 5: 15-30.

[6] Long Zhifei, Cen song. New discussion of finite element method. Beijing: China water conservancy and hydropower press, 2001. (In Chinese).

[7] Chen Jun. Study on the reaction force on the Pile Head and the Sedimentation Characteristics of Piled Raft Foundation and Balance Design Method for Variable-Rigidity [D]. Changsha: Hunan University, 2006. (In Chinese).

[8] Zhang Jianhui. Analysis method of pile-raft foundation in layered soil and optimal study of layout-pile [D]. Chongqing: Chongqing Jianzhu University, 2001. (In Chinese).

[9] Lu Peijun. Spatial Analysis on Highrise-Pile Foundation-Soil Interaction. Chinese Jounal of Geotechnical Engineering, 1993, 15(6): 59-70. (In Chinese).