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Recent Developments in Resonant Column Testing

by Vincent P. Drnevich, Univ of Kentucky, Lexington, KY, USA,



Document Type: Proceeding Paper

Part of: Richart Commemorative Lectures

Abstract:

The resonant column method of testing soils is reviewed. Recent developments in equipment, specimen configurations, and testing schemes are presented. Some equipment can perform both resonance and quasi-static tests on the same specimen. Hollow specimen tests are becoming more commonplace, especially in research. In addition to steady-state sinusoidal forcing functions, free vibration tests and random noise vibration tests are being used. The validity of using linear viscoelastic theory as a model for data reduction is supported. A new solution that accounts more rigorously for boundary conditions is presented. It shows that both inertia and stiffness must be considered. Specific criteria for fixed-ended conditions are established.

Subject Headings: Resonance | Soil tests | Equipment and machinery | Viscoelasticity | Vibration | Soil properties | Shear modulus

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