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Wave Equation Modelling of the SPT

by Alex Sy, Univ of British Columbia, Vancouver, BC, Canada,
R. G. Campanella, Univ of British Columbia, Vancouver, BC, Canada,



Document Type: Proceeding Paper

Part of: Geotechnical Engineering Congress?1991

Abstract:

The stress wave propagation in the Standard Penetration Test (SPT) is described in this paper. It is shown that the SPT is a complex dynamic system and that both force and motion measurements are needed to fully characterize the wave propagation in the SPT drill rod and sampler system. Field measurements of force and acceleration time histories in the SPT drill rods are presented. It is shown that a study of the force and velocity traces can give considerable insight into the dynamics of the SPT. The results of wave equation analyses of the SPT are compared to the field stress wave measurements.

Subject Headings: Stress waves | Wave equations | Wave measurement | Wave propagation | Penetration tests | Stress analysis | Soil stress

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