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

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Estimation of material properties: input data Given 3 drained triaxial test results for 3 confining pressures: σ 3 = 100 kPa σ 3 = 300 kPa σ 3 = 600 kPa Shear characteristics q − ε 1 Dilatancy characteristics ε v − ε 1 Stress paths in p − q plane Measurements of small strain stiffness moduli E o (σ 3 ) for the assumed confining pressures (through direct measurement of shear wave velocity in the sample) Andrzej Truty ZACE Services Hardening Soil model with small strain stiffness
Estimation of material properties: stress paths in p-q plane Estimation of friction angle φ = φ cs and cohesion c q Residual M-C envelope 1 6sinφ M* = 3 − sinφ 6 cosφ c* = c 3 − sinφ p If we know M ∗ and c ∗ then we can compute φ and c: φ = arcsin 3 M∗ 6 + M ∗ c = c ∗ 3 − sin φ 6 cos φ 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 and 20: Material properties Parameter Unit
Page 21 and 22: Example: triaxial test on dense Hos
Page 23: Example: triaxial test on dense Hos
Page 27 and 28: 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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