Reliability evaluation of bored piles with multiple defects
This paper aims to propose a methodology to quantitatively evaluate the reliability of pile foundations considering the possibility of multiple pile defects presence. The probability of failure of the pile considering the possibility of multiple defects presence is formulated by integrating the probabilities of failure for an intact pile and a pile with multiple defects systematically using the total probability theory. A pile capacity reduction factor is presented to account for the effect of the considered pile defects on the pile capacity. Formulae for calculating the coefficient of variation of the pile with defects are formulated. The reliability analysis is carried out in the framework of load and resistance factor design. An example is investigated to illustrate the proposed method. The results indicate that the impact of the possibility of multiple defects presence on the reliability of piles can be quantitatively evaluated using the proposed method in a rational way. The reliability of a pile is adversely affected by the presence of pile defects. The reliability of the pile will be overestimated if the possibility of multiple pile defects presence is not taken into account. If the correlation between two types of defects is not considered, the reliability of the pile will also be overestimated.
D.Q.Li
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, China
国际会议
上海
英文
2007-10-18（万方平台首次上网日期，不代表论文的发表时间）