Site Response Analysis of a Layered Soil Column (Total Stress Analysis): Difference between revisions
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This article describes the OpenSees implementation of a site response analysis for a layered soil profile using total stress analysis. A single soil column is modeled in two-dimensions and is subject to an earthquake ground motion in a manner which accounts for the finite rigidity of the underlying medium. | |||
Provided with this article is the main input file needed to execute this analysis in OpenSees, [[freeFieldDamp.tcl|freeFieldDamp.tcl]], along with several additional necessary and/or helpful files: | |||
* ELCENTRO.EQ, the acceleration time history for the considered ground motion | |||
* forceHistory.out, the path timeSeries information needed to run the analysis | |||
* getForceHistory.m, a Matlab script which computes the timeSeries information from the acceleration time history | |||
* getAccel.m, accelPlots.m, and depthPlots.m, Matlab scripts which produce the plots included in this article from the recorded results | |||
Download them all in a compressed file: [[Media:siteResponseSand.zip|siteResponseSand.zip]] | |||
To run this example, the user must download the files freeFieldDamp.tcl and forceHistory.out and place them in a single directory. Once this has been done, the user can then type "source freeFieldDamp.tcl" into the interpreter of the OpenSees.exe application to run the analysis. The Matlab scripts and the acceleration time history files are not essential to the analysis, however, they are provided to demonstrate how an alternative acceleration time history can be converted into the analysis and how certain plots can be obtained from the recorded output. | |||
== Model Description == | |||
[[File:siteResponse.gif|frame|Fig 1. Schematic representation of the model.]] | |||
Revision as of 23:03, 10 August 2010
Example posted by: Christopher McGann, University of Washington
This article describes the OpenSees implementation of a site response analysis for a layered soil profile using total stress analysis. A single soil column is modeled in two-dimensions and is subject to an earthquake ground motion in a manner which accounts for the finite rigidity of the underlying medium.
Provided with this article is the main input file needed to execute this analysis in OpenSees, freeFieldDamp.tcl, along with several additional necessary and/or helpful files:
- ELCENTRO.EQ, the acceleration time history for the considered ground motion
- forceHistory.out, the path timeSeries information needed to run the analysis
- getForceHistory.m, a Matlab script which computes the timeSeries information from the acceleration time history
- getAccel.m, accelPlots.m, and depthPlots.m, Matlab scripts which produce the plots included in this article from the recorded results
Download them all in a compressed file: siteResponseSand.zip
To run this example, the user must download the files freeFieldDamp.tcl and forceHistory.out and place them in a single directory. Once this has been done, the user can then type "source freeFieldDamp.tcl" into the interpreter of the OpenSees.exe application to run the analysis. The Matlab scripts and the acceleration time history files are not essential to the analysis, however, they are provided to demonstrate how an alternative acceleration time history can be converted into the analysis and how certain plots can be obtained from the recorded output.
