Table 2. SClay1S and Creep-SClay1S model...

Table 2.

SClay1S and Creep-SClay1S model parameter values

Parameter	Description	SClay 1S	Creep-SClay 1S†
γ/γ′ : kN/m³	Unit weight	16/6	16/6
λ_i	Intrinsic compression index	0·19	0·07 (λ*_i )
κ	Swelling index	0·014	0·005 (κ*)
ν′	Poisson’s ratio	0·20	0·20
M_c	Slope of CSL in triaxial compression	1·45	1·45
M_e	Slope of CSL in triaxial extension	1·1	1·1
ω	Rate of rotational hardening	200	200
ω_d	Relative rate of rotational hardening	1	1
a	Rate of destructuration	8	8
b	Relative rate of destructuration	0·5	0·5
α₀	Initial anisotropy	0·57	0·57
χ₀	Initial amount of bonding	15	15
$μ_{i}^{*}$	align="left"Modified intrinsic creep index	—	1/550‡
τ : days	Reference time	—	1
$K_{0}^{nc}$ §	Earth pressure coefficient at primary loading	0·42	0·42

Parameter	Description	SClay 1S	Creep-SClay 1S†
γ/γ′ : kN/m³	Unit weight	16/6	16/6
λ_i	Intrinsic compression index	0·19	0·07 (λ*_i )
κ	Swelling index	0·014	0·005 (κ*)
ν′	Poisson’s ratio	0·20	0·20
M_c	Slope of CSL in triaxial compression	1·45	1·45
M_e	Slope of CSL in triaxial extension	1·1	1·1
ω	Rate of rotational hardening	200	200
ω_d	Relative rate of rotational hardening	1	1
a	Rate of destructuration	8	8
b	Relative rate of destructuration	0·5	0·5
α₀	Initial anisotropy	0·57	0·57
χ₀	Initial amount of bonding	15	15
$μ_{i}^{*}$	align="left"Modified intrinsic creep index	—	1/550‡
τ : days	Reference time	—	1
$K_{0}^{nc}$ §	Earth pressure coefficient at primary loading	0·42	0·42

†Operates on modified compression, swelling and creep indices.

‡1/800 below 20 m depth in scenario 6 (see section ‘Impact of background settlements’).

^§From $K_{0}^{nc}$ = 1 − sin ϕ′ with ϕ′ = ϕ′ _CSLc.

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