Software
EERA (Equivalent-linear Earthquake site Response Analyses)
Version tested under the Windows 7 & Excel 2010
Download EERA_Complete_set.zip
The Geotechnical Earthquake Engineering Server (GEES) of the University of Southern California
Click files to download.
Installing EERA
Install EERA on your computer as follows:
Move file EERA.dll and Forrt.dll in the directory Windows/System of your hard drive.
Copy the other distribution files in a directory on your hard drive. Do not move EERA.xla after having performed the next step.
From within EXCEL, install the Add-in EERA.xla using Tools and Add-ins... As shown in the figure below, use Browse to locate EERA.xla. Do not move EERA.xla after installing it.
Removing EERA
EERA can be de-installed by unclicking EERA in the figure above.
Reporting problems and asking questions
EERA is a free software distributed without a technical support. Please check first the FAQ section. If you experience a new problem, please report it in detail by sending an email message to J. P. Bardet at bardet@usc.edu, and tobita@kansai-u.ac.jp. We will try to fix eventual EERA problems in a timely fashion and will compile frequenly asked questions as we receive them.
Reference:
Bardet, J. P., Ichii, K., and Lin, C. H., 2000, EERA: A Computer program for Equivalent-linear Earthquake site Response Analysis of Layred soil deposits, Department of Civil Engineering, University of Southern California.
NERA (Nonlinear Earthquake site Response Analyses)
Version tested under the Windows 7 & Excel 2010
Download NERA_Complete_set.zip
The Geotechnical Earthquake Engineering Server (GEES) of the University of Southern California
Click files to download.
NEW!
NERA for Windows10-64bit.zip: 2,911KB
Contents:
dforrt.dll, nera.dll, nera.xla, NERA_Manual.pdf, and neram.xlsx
How to install NERA in Windows 10:
1. Unzip "NERA-win10_64bit.zip."
2. Move "nera.dll" and "dforrt.dll" into "C:\Windows\SysWOW64."
3. Move "nera.xla" into "C:\Users\"YOUR ACCOUNT"\AppData\Roaming\Microsoft\AddIns"
4. Open Excel, then "File" - "Option" -"AddIns."
5. Browse and choose "nera.xlam" in "AddIns" windows, then OK.
6. Sorry, just a moment! I encountered a problem. "AddIns" is not shown on the menu bar. (Jul 19, 2016)
Old version
Installing NERA
Install NERA on your computer as follows:
Move file NERA.dll and Forrt.dll in the directory Windows/System of your hard drive.
Copy the other distribution files in a directory on your hard drive. Do not move NERA.xla after having performed the next step.
From within EXCEL, install the Add-in NERA.xla using Tools and Add-ins... As shown in the figure below, use Browse to locate NERA.xla. Do not move NERA.xla after installing it.
Removing NERA
NERA can be uninstalled by removing a check mark as in the figure above.
Reporting problems and asking questions
NERA is a free software distributed without a technical support. Please check first the FAQ section. If you experience a new problem, please report it in detail by sending an email message to tobita@kansai-u.ac.jp. We will try to fix eventual NERA problems in a timely fashion and will compile frequently asked questions as we receive them.
References:
Bardet, J. P., Tobita, T., 2001, NERA: A Computer program for Nonlinear Earthquake site Response Analyses of Layered soil deposits, Department of Civil Engineering, University of Southern California.
Solution of free-surface seepage problems using finite differences and Excel
A practical method for solving free-surface seepage problems is proposed by Bardet and Tobita (2002). Computational example can be downloaded from the link below.
Link to The Geotechnical Earthquake Engineering Server (GEES) of the University of Southern California
Click files to download. (Files contain the Visual Basic Macro)
Version tested under Windows XP & Excel 2010
How to:
Computation starts manually by pressing F9.
Reporting bugs and questions: tobita.tetsuo.8e@kyoto-u.ac.jp
References:
Bardet, J. P., and T. Tobita, 2002, "A practical method for solving free-surface seepage problems". Computer and Geotechnics, Vol. 29, No. 6, pp. 451-475.