Cyclic tests were conducted to study the secant shear modulus, G\ds, of two reconstituted sands and three laboratory-made clays at small cyclic shear-strain amplitudes γ\dc≈0.0006%–0.02%. A recently developed direct simple shear device for small-strain testing was employed. The effects of cyclic strain amplitude (γ\dc), type of soil and plasticity index (PI), vertical effective consolidation stress (σ’v+c), and overconsolidation ratio (OCR) were investigated. The results show that the ordinates of the normalized shear modulus reduction curve, Gs/Gmax–γ\dc, generally increase as σ’v\dc and OCR increase. However, these effects of σ’v\dc and OCR become smaller and may eventually disappear as the PI of the soil increases.
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Titolo: | Reduction of shear modulus at small strains in simple shear |
Autori: | |
Data di pubblicazione: | 1997 |
Rivista: | |
Handle: | http://hdl.handle.net/11573/40023 |
Appartiene alla tipologia: | 01a Articolo in rivista |