Immediate Estimation of Yield Acceleration for Shallow and Deep Failures in Slope-Stability Analyses
This article has been corrected.
VIEW CORRECTIONPublication: International Journal of Geomechanics
Volume 17, Issue 7
Abstract
The accurate assessment of the stability of natural slopes and earth structures during earthquakes is a critical design aspect for seismically active areas. The Newmark-type displacement method, which is capable of estimating permanent earthquake-induced displacements, is extensively adopted to evaluate slope stability under seismic loading. However, this approach becomes unmanageable for regional assessment because hundreds or thousands of iterations are required to obtain the yield acceleration (), which is estimated by trial and error in conventional slope-stability analyses. To reduce computational effort, a simple procedure is developed for the noniterative evaluation of for both shallow and deep slope failures. The factor of safety (FS) of slopes under static conditions is first calculated based on developed stability charts. Thereafter, is determined through its established correlation with FS. The calculated using the proposed procedure corresponds well with that obtained using the trial-and-error approach (5% difference). Thus, the proposed procedure can be applied efficiently in a regional assessment with thousands of slopes.
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Acknowledgments
This study was supported by the Taiwan National Science Council under Award NSC102-2625-M-005-004. The authors gratefully acknowledge this support.
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International Journal of Geomechanics
Volume 17 • Issue 7 • July 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Jun 18, 2015
Accepted: Nov 10, 2016
Published online: Jan 19, 2017
Discussion open until: Jun 19, 2017
Published in print: Jul 1, 2017
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