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Abstract
The response surface method is a convenient tool to evaluate the reliability of pile foundation. This paper proposes a new response surface method, which make use of high-order response surface function and the geometric properties of JC method to determine the iterative centre criterion. The application procedure of the new surface method for inclined load pile is developed. Based on this, the application procedure is then applied to carry out reliability of inclined load pile. This paper investigates two models of failure: pile head horizontal displacement and maximum bending moment of the pile, and comparisons are made with quadratic response surface and Monte Carlo simulation. The results of the reliability analysis show that the improved response surface method can considerably reduce the iterations, improve the computational accuracy and the stability of numerical experimentations.
Acknowledgements
The authors would also like to thank the reviews for their critical comments and valuable feedback which have been very useful in improving the work presented in this paper.
Funding
This work is supported by the Natural Science Foundation of Hunan Provence (Project No. 14JJ4003), the programme for Postdoctoral Foundation of China (Project No. 2013M531812) and Postdoctoral foundation of the Central South University.