Page History

{import:NavigationMenu}

h1. Advanced check for liquefaction: SLIQ2D

Background informations about SLIQ2D can be find in the xxxUser Manual of SLIQ2D.

h3. Determination of the imaginary surface

In this program, the fictive slope height and the fictive slope inclination are determined using the following steps:

h6. Step 1: Determination of the fictive height

The height of the part of the slope above water (h{~}1~) is increased until h{~}2~ with a factor equals to the ratio between the soil unit weight above water table and the soil below water table:
\\
h{~}2~ = (1 + w) . γ{~}s~ . h{~}1~ / (γ{~}s~ -- γ{~}w~)
with:
| w | The water grade: w = S{~}r~ . e . γ{~}w~ / γ{~}s~  |
| S{~}r~ | The degree of saturation of the soil (0 < S{~}r~ < 1). For sand (generally dry) S{~}r~ = 0 and for clay (generally completely saturated) S{~}r~ = 1. |\\

h6. Step 2: Determination of the fictive slope inclinaison

By means of the least squares method, the submerged slope (red line in the figure below) compared to the fictive submerged slope is determined and subsequently the fictive slope inclinaison (α{~}R~).

h1. Advanced check for breaching: HMTurb