Location
San Diego, California
Presentation Date
27 May 2010, 4:30 pm - 6:20 pm
Abstract
The objective of the study presented herein is to develop an empirical predictive relationship for permanent relative displacements for use in assessing the seismic stability of slopes, dams, and/or embankments subjected to active shallow crustal earthquake motions. A total of 330 horizontal motions, recorded at rock sites during 29 earthquakes in active shallow crustal regions (e.g., western North America: WNA), were used in this study. For each motion, the permanent relative displacements were computed using the Newmark sliding block procedure for a suite of yield-accelerations: 0.01, 0.05, 0.10, and 0.20 g. The predictive relationship proposed herein was derived by performing separate regression analyses for each yield-acceleration. This allows the relationship to be simply formulated in terms of ground motion characteristic parameters, independent of yield-acceleration (ky), and results in lower standard deviations than those for relations developed by regressing all the data in a single analysis. The non-linear mixed-effects technique was used to regress the relative displacement data as functions of maximum ground accelerations and velocities (Amax and Vmax, respectively). The median permanent relative displacements predicted for WNA rock motions decreases with increasing ky/Amax but increases with increasing Vmax. Also, the rate of decrease in displacement with respect to ky/Amax varies as a function of ky.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Lee, Jongwon; Green, Russell A.; and Finch, Rachel, "An Empirical Predictive Relationship for Assessing the Seismic Stability of Slopes" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 5.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session04b/5
Included in
An Empirical Predictive Relationship for Assessing the Seismic Stability of Slopes
San Diego, California
The objective of the study presented herein is to develop an empirical predictive relationship for permanent relative displacements for use in assessing the seismic stability of slopes, dams, and/or embankments subjected to active shallow crustal earthquake motions. A total of 330 horizontal motions, recorded at rock sites during 29 earthquakes in active shallow crustal regions (e.g., western North America: WNA), were used in this study. For each motion, the permanent relative displacements were computed using the Newmark sliding block procedure for a suite of yield-accelerations: 0.01, 0.05, 0.10, and 0.20 g. The predictive relationship proposed herein was derived by performing separate regression analyses for each yield-acceleration. This allows the relationship to be simply formulated in terms of ground motion characteristic parameters, independent of yield-acceleration (ky), and results in lower standard deviations than those for relations developed by regressing all the data in a single analysis. The non-linear mixed-effects technique was used to regress the relative displacement data as functions of maximum ground accelerations and velocities (Amax and Vmax, respectively). The median permanent relative displacements predicted for WNA rock motions decreases with increasing ky/Amax but increases with increasing Vmax. Also, the rate of decrease in displacement with respect to ky/Amax varies as a function of ky.
