Any database for Duncan-Chang parameters range? 1

[sepehrrm2]

Hello.
I'm looking for a database of Duncan-Chang(hyperbolic) model parameters range, for the materials used in rockfill dams.
Any idea where I can find such thing?

Thanks in advance.

 

[geodone]

Hi,
in addition I send you paper, where you could find what are the rough values that are used for the soil materials. I suggest you to make several triaxial tests for the materials before you adopt any value for the parameters.

Cheers, Done

 

[geodone]

I'll write the values below, since I can't open the pdf text that I've posted.

Reference: Al-Hussaini, M. M., and Johnson, L. D. (1978)
Soil type: sand fill
Parameter values used:
K = 580, n = 0.50, Rf = 0.85, ? = 36?, c= 0.0, ? = 0.30

Reference: Andrawes, et al. (1982)
Soil type: Leighton Buzzard sand
Parameter values used:
K = 1573, Kur = 1890, n = 1.05, Rf = 0.90, ? = 42.7?, c = 0.0, G = 0.46, F = 0.17, d = 24.0

Reference: Chalaturnyk, et al. (1990)
Soil type: sand fill
Parameter values used:
K = 177, Kur = 354, n = 0.43, Rf = 0.85, ? = 17?, c = 33.0 kPa, ? = 0.40

Reference: Ogisako, et al. (1988)
Soil type: sand
Parameter values used: K = 1000, n = 1.00, Rf = 0.90, ? = 38?, c = 0.0, ? = 0.333.

Reference: Xi (1992)
Soil type: Ottawa sand
Parameter values used:
K = 600, Kur = 600, n = 0.40, Rf = 0.80, ? = 35?, c = 1.0 kPa, Patm= 101.4 kPa, Kb = 300, m = 0.40.

 

[sepehrrm2]

Thank you very much. Appreciated.

 

[sepehrrm2]

Any other values available for clays with C~ 100 kPa and phi~10?

Thanks in advance.

 

[fattdad]

"CGPR #63 - Hyperbolic Stress-Strain Parameters" is available through Virginia Tech's Center for Geotechnical Practice and Research. You'd have to contact them directly as the publication doesn't show up on their web page (recent release of Duncan's 1980 dataset). There are a ton of soil types with index properties and hyperbolic parameters all tabulated.

Good luck.

f-d


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