Slope
Performance During an Earthquake
Java Programs for using Newmark’s
method and simplified decoupled analysis to model slope performance
during earthquakes
Randall W. Jibson and Matthew W. Jibson
Open-File Report 03-005
Landslides typically cause a large proportion
of earthquake damage, and the ability to predict slope performance
during earthquakes is important for many types of seismic-hazard
analysis and for the design of engineered slopes. Newmark’s
method for modeling a landslide as a rigid-plastic block sliding
on an inclined plane provides a useful method for predicting approximate
landslide displacements. Newmark’s method estimates the displacement
of a potential landslide block as it is subjected to earthquake
shaking from a specific strong-motion record (earthquake acceleration-time
history). A modification of Newmark’s method, decoupled analysis,
allows modeling landslides that are not assumed to be rigid blocks.
This open-file report is available on CD-ROM
and contains Java programs intended to facilitate performing both
rigorous and simplified Newmark sliding-block analysis and a simplified
model of decoupled analysis. For rigorous analysis, 2160 strong-motion
records from 29 earthquakes are included along with a search interface
for selecting records based on a wide variety of record properties.
Utilities are available that allow users to add their own records
to the program and use them for conducting Newmark analyses. Also
included is a document containing detailed information about how
to use Newmark’s method to model dynamic slope performance.
This program will run on any platform that supports the Java Runtime
Environment (JRE) version 1.3, including Windows, Mac OSX, Linux,
Solaris, etc. A minimum of 64 MB of available RAM is needed, and
the fully installed program requires 400 MB of disk space.
Request a copy of this FREE program on CD-ROM from the author
(Please include the mailing address you want
it sent to!)
Download the latest upgrade of the executable program file
(only for users who already have installed
the program from CD-ROM)
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