STUDY ON BEARING CAPACITY RELIABILITY OF COMPOSITE FOUNDATION WITH GRANULAR SOIL PILE BASED ON RANDOM FIELD THEORY

A probability model for bearing capacity of composite foundation with granular soil pile is developed, which considers the effects of depth and shape of the foundation. JC method is used to calculate the reliability index. The effects on reliability index of variety coefficient of random variables, replacement ratio, load-bearing factor of soil, slip plane angle, and internal friction angle of soil are analyzed.