基于有限元可靠度的复合桩基安全性评估

Safety assessm ent of com posite pile foundation based on FEM reliability

针对复合桩基承载能力安全性评价问题,提出一种能够考虑参数随机性的可靠度反分析方法进行复合桩基承载能力安全系数评估。该方法在考虑参数随机性的同时,计算出的复合桩基承载能力安全系数能够满足预先指定的目标可靠度的要求。通过一个算例验证提出方法的正确性。

In this paper,aiming at the safety evaluation of ultimate bearing capacity of composite pile foundation,an inverse reliability analysis method considering the randomness of parameters is proposed to evaluate the safety factor of ultimate bearing capacity of composite pile foundation.The proposed method,considering the randomness of parameters,was used to calculate the safety factor of ultimate bearing capacity of composite pile foundation to meet the prescribed target reliability requirem ents.An example was given to verify the correctness of the proposed method.