|
Soil liquefaction is a disastrous
phenomenon occurred during earthquake because of pore pressure build-up in sand
layers. There are several methods to check the potential of soils against
liquefaction. PEYSANJ uses 8 different methods, based on SPT, BDT or Vs (shear
wave velocity) tests data:
|
4 |
Japan' Bridge Code |
|
4 |
Chinese Code |
|
4 |
Seed et al. (1983) |
|
4 |
Tokimatsu-Yoshimi (1983) |
|
4 |
Shibata 1981 |
|
4 |
Kokusho et al. (1983) |
|
4 |
NCEER Workshop (1997) |
|
4 |
Vancouver Task Force
2007 |
Cyclic shear stress ratios (resistant / incured) or CRR and CSR during
earthquake are calculated and plotted with depth of borehole. Safety factor
against soil liquefaction is plotted with depth and post-liquefaction lateral
spreading and vertical settlements also calculated for the site based on
topography and characteristics of the design earthquake.
The main features covered in
Soil Liquefaction module of
PEYSANJ are listed here:
|
4 |
Soil liquefaction
assessment based on 8
methods |
|
4 |
Post liquefaction
lateral spreading
analysis (Zhang and
Robertson, 2004) |
|
4 |
Post liquefaction
vertical settlement
analysis (Ishihara and
Yoshimi, 1992) |
|
4 |
Post liquefaction
residual strength
analysis (Idriss and
Boulanger, 2007) |
|
4 |
Supporting field tests:
SPT, Shear wave
velocity, Becker density |
|
4 |
|
Print preview and
calculation
details report |
|
|
4 |
|
Export results to
Microsoft Excel
and image formats |
|
|
