Hardening Soil model with small strain stiffness - Zace Services Ltd.

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Converting MC to HS model: indentation problem Assumption: q = 0.5 q ult Given: E for MC model and E ur E 50 = ..., E 50 E oed = ... 1m A q = 0.5 q ult 10m 10m Find: E ref ur , M and H for standard HS model Andrzej Truty ZACE Services Hardening Soil model with small strain stiffness
Example: triaxial test on dense Hostun sand 6 5.5 5 120000 SIG-1 / SIG-3 [kPa] 4.5 4 3.5 3 2.5 HS-std HS-small G [kPa] 100000 80000 60000 40000 HS-std HS-small 2 1.5 20000 1 0 0 0.02 0.04 0.06 0.08 0.1 0.00001 0.0001 0.001 0.01 0.1 1 -EPS-Y [-] EPS-X - EPS-Y [-] (a) σ 1 σ 3 (ε 1 ) (Z Soil) (b) G(γ) (Z Soil) 4 3.5 0 0.02 0.04 0.06 0.08 0.1 0.08 SIG-1 / SIG-3 [kPa] 3 2.5 2 HS-std HS-small -EPS-V [-] 0.07 0.06 0.05 0.04 0.03 0.02 HS-std HS-small 1.5 0.01 0 1 -0.01 0 0.002 0.004 0.006 0.008 0.01 -EPS-Y [-] -0.02 -EPS-Y [-] (c) σ 1 σ 3 (ε 1 ) (zoom) (Z Soil) (d) ε v (ε 1 ) (Z Soil) Andrzej Truty ZACE Services Hardening Soil model with small strain stiffness
Page 1 and 2: Hardening Soil model with small str
Page 3 and 4: Introduction HS model was initially
Page 5 and 6: Notion of tangent and secant stiffn
Page 7 and 8: Notion of treshold shear strain γ
Page 9 and 10: HS model: general concept Double ha
Page 11 and 12: Stiffness stress dependency Remarks
Page 13 and 14: How does it work N-1 N N+1 plot fr
Page 15 and 16: Setting initial state variables: γ
Page 17 and 18: Setting initial state variables: γ
Page 19: Material properties Parameter Unit
Page 23 and 24: Example: triaxial test on dense Hos
Page 25 and 26: Estimation of material properties:
Page 37 and 38: Excavation in Berlin Sand: FE discr
Page 39 and 40: Excavation in Berlin Sand: Wall def
Page 41 and 42: Excavation in Berlin Sand: Soil def

Hardening Soil model with small strain stiffness - Zace Services Ltd.

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