Numerical Analysis of Small-Scale Model Pile in Unsaturated Clayey Soil

作者：Chung Shao Hung; Yang Shu Rong^*

来源：International Journal of Civil Engineering, 2017, 15(6A): 877-886.

DOI：10.1007/s40999-016-0065-7

• Small-scale model pile
• Unsaturated soil
• Finite element method
• Interface direct shear test
• Matric suction
• Dilatancy angle

Pile load tests and numerical analysis of a small-scale model pile in unsaturated clayey soil are presented in this paper. A small-scale model pile was simulated to bear a static axial loading in unsaturated soil using finite element method. All parameters used in the finite element method were obtained in laboratory tests, including the direct shear test, interface direct shear test, and filter paper method. The numerical analysis results were compared with the pile load test results. The results show that the general trend of pile load and pile head settlement relationship obtained by the numerical analysis shows a good consistence with the pile load test results. With increasing water content of the soil, the matric suction, dilatancy angle and shear strength decrease, and consequently the ultimate bearing capacity of pile decreases.

• 出版日期2017-9