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http://dx.doi.org/10.5000/EESK.2008.12.1.029

The effects of End Platens on Effective Stresses in Resonant Column (RC) Specimens during Consolidation  

Bae, Yoon-Shin (유타주립대학교)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.1, 2008 , pp. 29-42 More about this Journal
Abstract
The objective of this study is to investigate the effects of rigid end platens on effective stresses in soil mass during consolidation. The friction between the teeth of top cap/base pedestal and the specimen during consolidation decreases the radial and tangential effective stresses in RC specimens. However, it is unpractical to measure the effective stresses in the soil specimen. Two approaches were used to evaluate the state of stress in RC specimens during consolidation. First, careful measurements were made of small strain shear modulus, $G_{max}$ in specimens with carefully controlled void ratios and stress histories, to infer the state of stress. And second, a finite element analysis was performed to analytically evaluate the effect of various soil parameters on the state of stress in RC specimens during consolidation. By combining these experimental and analytical results, an example was performed to predict the average state of stress in RC specimens during consolidation.
Keywords
shear modulus at small strains $G_{max}$; end effects; Resonant Column (RC) test; finite element analysis; effective stresses; consolidation;
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