Flashcards
soils test
Flashcards do conjunto (12)
- 1!st stage of consolidation. what is the eq for slope and areaslope= 2 delta stressv
area= delta stressv * L/3 - 21st stage consolidation (L-water is incompressible;
-change in volume is directly related to pore pressure volume reduction
-- void ratio reduction only possible if water is flowing out
-- variation of volume equals volume of water flowing out - 31st stage consolidation settlement eqW = change stressv/Eo' * sqrt(4/3*cv*t)
W is the settlement of the upper half of the sample (if 2 way drainage) - 42nd stage consolidation (L=D) what is the eq for slope and areaslope = 2uedd
Area = D*ued + (delta stressv-Ued)D - 52nd stage what is the settlement eqgay ness
- 6is an odeometer test 1 way drainage or 2 way2 way
- 7when is it first stageT<1/12
or
R<1/3 - 8when is second stageT>1/12
or 1>R >1/3 - 9How might differences arise- lateral variations in strata
- variations in the applied loading - laterally
-differences in construction time and period of adjacent points of structure
-variations in site conditions
flexible foundations - 10advantages of using plasticity methodswe do not need to have the full stress - strain relationship as only the strength is needed
- if we know the critical state strength, we do not need to know the soils crit state or history - 11disadvantagesplasticity methods do not give us information on deformation
- 12elasticity-based methods rules that need to be satisfiedequilbrium of stress and forces
- A constitute law relating to stress and strain bassed on material behaviour
-compatibility of strains and displacements
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- FlashCards sobre soils test , criado por adam_longley em 17-08-2014.
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- adam_longley
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