Abstract: This paper presents the numerical analysis of the post grouted pile groups in a marine highway bridge project by using software ADINA. The three-dimensional finite element models were used to analyze 9 pile groups before and after the post grout treatment. The load transfer characteristics of the pile, axial stresses in the pile and within the pile group as well as the displacement of the pile group are evaluated. The results indicates that, the post grouted pile can reduce the pile group settlement by 44.3% as well as improve the stress distribution.

Key words: Cast-In-Place Concrete Piles, Post Grouted Piles, Piles Groups, Numerical Analysis, Bearing Capacity Characteristics