Table of Contents Author Guidelines Submit a Manuscript
Mathematical Problems in Engineering
Volume 2016, Article ID 1659549, 7 pages
http://dx.doi.org/10.1155/2016/1659549
Research Article

Reliability of Foundation Pile Based on Settlement and a Parameter Sensitivity Analysis

1Wuhan University of Technology, School of Civil Engineering and Architecture, Wuhan 430070, China
2Nanyang Institute of Technology, School of Civil Engineering, Nanyang 473004, China
3Henan University of Technology, School of Civil Engineering and Architecture, Zhengzhou 450001, China

Received 19 November 2015; Accepted 14 February 2016

Academic Editor: Egidijus R. Vaidogas

Copyright © 2016 Shujun Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Based on the uncertainty analysis to calculation model of settlement, the formula of reliability index of foundation pile is derived. Based on this formula, the influence of coefficient of variation of the calculated settlement at pile head, coefficient of variation of the permissible limit of the settlement, coefficient of variation of the measured settlement, safety coefficient, and the mean value of calculation model coefficient on reliability is analyzed. The results indicate that high reliability index can be obtained by increasing safety coefficient; reliability index will be reduced with increasing of the mean value of calculation model coefficient and coefficient of variation of the permissible limit of settlement; reliability index will not always monotonically increase or decrease with increasing of coefficient of variation of the calculated settlement and coefficient of variation of calculation model coefficient. To get a high reliability index, coefficient of variation of calculation model coefficient or value range of coefficient of variation of calculation model coefficient should be determined through the derived formula when values of other independent variables are determined.