PILE-CAP-PILE-GROUP INTERACTION IN NONHOMOGENEOUS SOIL

A numerical method of analysis is presented to study the behavior of vertically loaded pile groups embedded in a nonhomogencous soil with the pile caps in contact with the ground. The considered soil profiles consist of soil with Young's moduli increasing linearly with depth. Parametric solutions are presented to show the influence of the distribution of the soil Young's moduli on the behavior of the groups. For the nonhomogeneous‐soil profiles considered, the effect of the cap in contact with the ground has a small influence on the stiffness of the group compared to the case without a ground‐contacting cap. The load carried by the cap, as expected, is significantly affected by the distribution of the soil Young's moduli. Case studies of field tests in clay show that the consideration of the nature of the soil inhomogeneity at the sites better models the behavior of pile groups with ground‐contacting caps.

[1]  Y. Chow.  Analysis of vertically loaded pile groups , 1986 .

[2]  Y. K. Chow.  Discrete element analysis of settlement of pile groups , 1986 .

[3]  R. W. Cooke,et al.  Jacked piles in London clay: Interaction and group behaviour under working conditions , 1980 .

[4]  Y. K. Chow,et al.  AXIALLY LOADED PILES AND PILE GROUPS EMBEDDED IN A CROSS-ANISOTROPIC SOIL , 1989 .

[5]  Y. K. Chow,et al.  Axial and lateral response of pile groups embedded in nonhomogeneous soils , 1987 .

[6]  D. V. Griffiths,et al.  Programming the finite element method , 1982 .

[7]  M. Ottaviani,et al.  Three-dimensional finite element analysis of vertically loaded pile groups , 1975 .

[8]  Harry G. Poulos,et al.  Analysis of the Settlement of Pile Groups , 1968 .

[9]  P. K. Banerjee,et al.  THE PROBLEM OF PILE GROUP-PILE CAP INTERACTION , 1971 .

[10]  Pk Banerjee.  Effects of the Pile Cap on the Load Displacement Behaviour of Pile Groups When Subjected to Eccentric Loading , 1975 .

[11]  M. Randolph,et al.  AN ANALYSIS OF THE VERTICAL DEFORMATION OF PILE GROUPS , 1979 .

[12]  Y. K. Chow,et al.  Vertical deformation of rigid foundations of arbitrary shape on layered soil media , 1987 .

[13]  Fumio Kuwabara.  AN ELASTIC ANALYSIS FOR PILED RAFT FOUNDATIONS IN A HOMOGENEOUS SOIL , 1989 .

[14]  Yasunori Koizumi,et al.  Field Tests with Regard to Pile Driving and Bearing Capacity of Piled Foundations , 1967 .

[15]  P. K. Banerjee,et al.  The Elastic Analysis of Compressible Piles and Pile Groups , 1971 .