Non-probabilistic fuzzy reliability analysis of pile foundation stability by interval theory

来源期刊：中南大学学报(英文版)2007年第6期

论文作者：曹文贵 张永杰 赵明华

文章页码：864 - 864

Key words：pile foundation; fuzziness; interval theory; interval-truncation approach; non-probabilistic fuzzy reliability analysis

Abstract: Randomness and fuzziness are among the attributes of the influential factors for stability assessment of pile foundation. According to these two characteristics, the triangular fuzzy number analysis approach was introduced to determine the probability-distributed function of mechanical parameters. Then the functional function of reliability analysis was constructed based on the study of bearing mechanism of pile foundation, and the way to calculate interval values of the functional function was developed by using improved interval-truncation approach and operation rules of interval numbers. Afterwards, the non-probabilistic fuzzy reliability analysis method was applied to assessing the pile foundation, from which a method was presented for non- probabilistic fuzzy reliability analysis of pile foundation stability by interval theory. Finally, the probability distribution curve of non- probabilistic fuzzy reliability indexes of practical pile foundation was concluded. Its failure possibility is 0.91%, which shows that the pile foundation is stable and reliable.

基金信息：the Natural Science Foundation of Hunan Province, China
the National Natural Science Foundation of China