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DEEPSOIL
News
DEEPSOIL
v3.5 BETA
April 19, 2009
An
updated release of
DEEPSOIL v3.5
BETA is now available for download. The following changes have been
made:
- Corrected a calculation error when
converting the units of Shear Modulus from Metric to English units.
- A "Convert Units" menu item has
been added to Steps 2 thru 5 which allows the user to convert from English
to Metric units (and vice versa) and Shear Modulus to Shear Wave Velocity
(and vice versa) during any of these steps. Previous versions of DEEPSOIL
constrained unit conversions to Step 2.
- When saving the hyperbolic model parameters
for defining the modulus reduction and damping curves, the user now has
the option to also save the discrete point data of these curves which can
be used in equivalent linear analyses.
- Previous versions of DEEPSOIL
did not correctly load the location of the water table when loading a
saved profile. This error has been corrected for nonlinear analyses,
and equivalent linear analyses which define soil curves using the
hyperbolic model.
NOTE: The error is still present when loading an equivalent linear
analysis which defines the soil curves by discrete points. This issue will
be resolved in the next update.
- A text file listing all of the updates which
have been made to DEEPSOIL
since 2008 is available here.
UNINSTALL
PREVIOUS VERSIONS OF DEEPSOIL BEFORE INSTALLING THE LATEST VERSION
March 06, 2009
The following changes have been
made to
DEEPSOIL v3.5
BETA:
- For layers above the water table in
effective stress analyses, DEEPSOIL
will now modify the pore water pressure
parameters such that no excess pore water pressures are generated.
If the analysis includes pore water pressure dissipation, the dissipation
parameter(s) still need to be defined.
NOTE: It is also recommended to use the Sand pore water pressure
model for layers above the water table. If the Clay model is used,
degradation will occur in that layer even though no excess pore water
pressures are generated.
- Corrections have been made to the manner in
which
DEEPSOIL
"remembers" the user workspace.
The interface for changing the workspace has also been improved with a
folder browser.
- The "Open Profile" dialog box has
been replaced with the standard Windows format.
- DEEPSOIL
will now check to see if the Reference Stress and Reference Strain are
greater than zero. These values must always be greater than zero, as
zero values produce "Divide By Zero" errors which prevent an
accurate analysis.
- The "Save Profile" and "Export Output" dialog boxes
have been replaced with the standard Windows format.
February 02, 2009
The following changes have been
made to
DEEPSOIL v3.5
BETA:
- For Effective Stress Analyses, a plot of the
Excess Pore Water Pressure vs. Time can be viewed in Step 6: Output.
- Corrections have been made to the coloring
and order in which G/Gmax and Damping curves are plotted when using the
curve fitting procedure for defining layer properties.
- The Tutorial & Manual has been updated
to include information regarding the historical development of DEEPSOIL.
November 17, 2008
The following changes have been
made to
DEEPSOIL v3.5
BETA:
- For Effective Stress Analyses using the Sand
Pore Water Pressure Model, the v (nu) parameter will now be correctly
loaded from saved profiles.
- The Tutorial & Manual have been updated
to include suggested range of the v (nu) parameter for effective stress
analyses using the pore water pressure model for sands. The
parameter has a suggested range of 3.5 - 5.0, with an average value of
3.8. The updated Tutorial & Manual is available for direct
download from the website and is also packaged with the DEEPSOIL
installer.
October 27, 2008
The following changes have been
made to
DEEPSOIL v3.5
BETA:
- Profiles saved as a Linear Time Domain
Analysis will now correctly open as a Linear Time Domain Analysis.
Such profiles would previously open as a Linear Frequency Domain Analysis.
- For Time Domain Analysis, the maximum frequency which can be propagated
through the soil profile will now be checked for both Linear and Nonlinear
analyses. Previous versions performed this check only for Nonlinear
analysis.
September 03, 2008
The following changes have been
made to
DEEPSOIL v3.5
BETA:
- The Baseline Correction feature has been
updated to display the acceleration, velocity, and displacement time
histories of the original and corrected input motions. Response
spectra are also displayed.
- The mouse cursor will now change to a
"waiting" cursor - typically in the shape of an hourglass - when
DEEPSOIL is processing data.
July 09, 2008
An
updated release of
DEEPSOIL v3.5
BETA is now available for download.
The
DEEPSOIL v3.5
BETA Tutorial and Manual is now available for download. This manual is
included
with the
DEEPSOIL v3.5
BETA Installer, but is also available to download from the menu.
Features:
- Redesigned Graphic User Interface (GUI)
- Batch Mode Analysis available
- New Hyperbolic Model
- New Procedures for Selection/Fitting of
Non-linear Parameters
- New Small-Strain Damping Formulation
- Automatic Exporting of Output Data
- Porewater Pressure/Coupled Capability UNDER
DEVELOPMENT
Version 3.5 BETA is designed for use
with the Windows XP operating system, with Service Pack 2 installed.
Other operating systems may or may not support
DEEPSOIL v3.5
BETA.
The Microsoft .NET Framework
Version 2.0 is required to run
DEEPSOIL v3.5
BETA. You may download the .NET Framework v2.0 installer from the Microsoft
website.
NOTE: Saved profiles
from earlier versions of DEEPSOIL
are incompatible with
Version 3.5 BETA.
Please reanalyze your profiles using v3.5 BETA.
DEEPSOIL
v2.6
DEEPSOIL
v2.6 is still available for download.
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Welcome to DEEPSOIL-
DEEPSOIL is a 1D site response analysis program with graphical user-interface that can perform
both
- 1D Nonlinear analysis-
- 1D Equivalent linear analysis
To learn more about DEEPSOIL
v2.6, download the manual.
To download
DEEPSOIL, please register
online. If you have already registered, login
here.
We welcome your feedback. If you are interested in contributing to
DEEPSOIL development please contact Prof. Hashash at hashash@illinois.edu.
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Related Publications
Park, D. and Hashash, Y.M.A. (2003). "Soil
damping formulation in nonlinear time domain site response
analysis". Journal of Earthquake Engineering",
v. 8, (2), 249-274.
Hashash, Y.M.A. and Park D.
(2002). "Viscous
damping formulation and high-frequency components in deep deposits". Soil
Dynamics and Earthquake Engineering",
v. 22 (7), 611-624.
Hashash,
Y.M.A. and Park D. (2001). "Non-linear
one-dimensional wave propagation in the Mississippi Embayment",
Engineering Geology, v. 62 (1-3), 185-206.
Phillips,
C. and Hashash, Y.M.A. (2009). "Damping
formulation for nonlinear 1D site response analyses",
Soil Dynamics and Earthquake Engineering, v. 29 (2009) 1143–1158.
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