Abstract
This paper examines peak and residual pore-water pressures in water-saturated soil induced by a dilatational stress wave. Our new laboratory testing device applies submillisecond, high pressure dilatational stress-wave loadings to water-saturated soil. The soil's initial effective stress, density, back pressure and saturation can be controlled with our device. Experimental results show that it is possible to induced residual excess pore-water pressure and liquefaction in water-saturated Monterey No. 0/30 sand. Liquefaction is induced with compressive strains exceeding 0.1 percent for loose samples consolidated at 172 kPa and 1 percent for dense samples consolidated at 690 kPa. Below a threshold compressive strain of about 0.005 percent, no significant residual excess pore-water pressures are developed.
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Abbreviations
- B mix :
-
bulk modulus of the mixture (kPa)
- B z :
-
modulus of elasticity of the solids (kPa)
- B w :
-
bulk modulus of water (percent)
- C :
-
pore-water pressure parameter
- D R :
-
relative density (percent)
- e :
-
void ratio
- PPR:
-
pore pressure ratio
- PVC:
-
polyvinyl chloride
- R 2 :
-
coefficient of determination
- S :
-
standard error of estimate
- u ex :
-
residual excess pore-water pressure (kPa)
- V c :
-
compression wave velocity (m/s)
- V pk :
-
peak particle velocity (m/s)
- ε pk :
-
peak compressive strain (percent)
- ϱ t :
-
total mass density (kg/m3)
- ϱ t V c :
-
acoustic impedance (kg/m2-s)
- σ I :
-
stress intensity of incident stress (kPa)
- σ R :
-
stress intensity of reflected stress (kPa)
- σ T :
-
stress intensity of transmitted stress (kPa)
- \(\bar \sigma _o \) :
-
initial effective stress (kPa)
- Δu pk :
-
peak change in pore-water pressure (kPa)
- Δσ pk :
-
peak chang in compressive stress (kPa)
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Charlie, W.A., Veyera, G.E. & Doehring, D.O. Dilatational-wave-induced pore-water pressure in soil. Experimental Mechanics 29, 437–442 (1989). https://doi.org/10.1007/BF02323864
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DOI: https://doi.org/10.1007/BF02323864