Modelling of Displacement Piles in Sand Using a Pressure Chamber

by C. Vipulanandan, Univ of Houston, United States,
D. Wong, Univ of Houston, United States,
M. Ochoa, Univ of Houston, United States,
M. W. O'Neill, Univ of Houston, United States,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices


This paper describes a method of modelling the driving and loading of piles in the laboratory that permits variations of significant parameters and maintains effective stresses at levels that simulate in-situ conditions. A specific example is also described, in which the behavior of a displacement pile was studied under varying conditions of relative density and in-situ stress in a poorly graded, clean, submerged, fine siliceous sand. The laboratory testing system consists of a pressure chamber termed the 'long, variable lateral pressure soil column' (LVLPSC), soil deposition equipment, instrumented model pile, impact hammer, portable loading-test equipment, and digital and analog data acquisition systems.

Subject Headings: Soil pressure | Displacement (mechanics) | Piles | Sandy soils | Pressure vessels | Load tests | Pile tests | Effective stress

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