Study of Pile Driving by Finite-Element Method

by Mounir E. Mabsout, Asst. Prof.; Dept. of Civ. Engrg., American Univ. of Beirut, Lebanon,
Lymon C. Reese, (Hon.M.ASCE), Prof.; Dept. of Civ. Engrg., Univ. of Texas, Austin, TX 78712-1076,
John L. Tassoulas, (M.ASCE), Prof.; Dept. of Civ. Engrg., Univ. of Texas, Austin, TX,

Serial Information: Issue 7, Pg. 535-543

Document Type: Journal Paper

Abstract: Results from the computational driving of a concrete pile below a prebored hole (referred to as a prebored pile for convenience) in an undrained, normally consolidated clayey soil are presented. The analysis uses a nonlinear, finite-element model that simulates the penetration of the pile into the soil. The response of the pile-soil system is examined at various preboring levels. A comparison between the responses of normally consolidated clays with various strengths is discussed. The influence of pile-soil friction and tip bearing on the response is also investigated. Emphasis is placed on the evolution of the state of stress in the soil and the development of pore-water pressure in the course of driving. Other computations are made for the case where the pile is driven some distance into undisturbed soil, referred to as a driven pile case for convenience. Finally, insight is gained into the difference in response between prebored and driven piles.

Subject Headings: Finite element method | Consolidated soils | Pile driving | Concrete piles | Driven piles | Clays | Computing in civil engineering | Soil analysis | Nonlinear finite element analysis |

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