Engineers often use simplified seismic slope displacement procedures to evaluate the seismic performance of earth structures and natural slopes. Current state of practice procedures typically separate the estimation of the ground motion intensity measure (IM) from the estimate of seismic displacement (D), given the selected IM hazard level. Thus D is estimated based on a single IM value. A straightforward performance-based seismic slope assessment procedure is proposed, which considers the full range of potential IM values to estimate seismic slope displacements directly related to a hazard level. Seismic performance is assessed through either a Newmark-type seismic displacement estimate or a calibrated seismic coefficient that can be used in pseudostatic slope stability analyses. The procedures were developed for a wide range of earth systems for shallow crustal earthquakes and subduction zone earthquakes. Currently employed simplified slope displacement procedures do not provide consistent assessments of the actual seismic slope displacement hazard. The proposed procedures can be readily used in practice to perform rigorous performance-based seismic slope displacement hazard assessments.
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Research Article|
May 01, 2018
Performance-Based Probabilistic Seismic Slope Displacement Procedure
Jorge Macedo;
Jorge Macedo
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
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Jonathan Bray, M. EERI;
Jonathan Bray, M. EERI
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
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Norman Abrahamson, M. EERI;
Norman Abrahamson, M. EERI
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
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Thaleia Travasarou
Thaleia Travasarou
b
Fugro Consultants Inc., Oakland, CA, USA
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Jorge Macedo
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
Jonathan Bray, M. EERI
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
Norman Abrahamson, M. EERI
a
Department of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720-1710
Thaleia Travasarou
b
Fugro Consultants Inc., Oakland, CA, USA
Publisher: Earthquake Engineering Research Institute
Received:
25 Dec 2016
Accepted:
23 Dec 2017
First Online:
01 Jun 2020
Online ISSN: 1944-8201
Print ISSN: 8755-2930
© 2018 Earthquake Engineering Research Institute
Earthquake Engineering Research Institute
Earthquake Spectra (2018) 34 (2): 673–695.
Article history
Received:
25 Dec 2016
Accepted:
23 Dec 2017
First Online:
01 Jun 2020
Citation
Jorge Macedo, Jonathan Bray, Norman Abrahamson, Thaleia Travasarou; Performance-Based Probabilistic Seismic Slope Displacement Procedure. Earthquake Spectra 2018;; 34 (2): 673–695. doi: https://doi.org/10.1193/122516EQS251M
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Index Terms/Descriptors
- acceleration
- California
- dams
- data bases
- earthquakes
- engineering geology
- great earthquakes
- ground motion
- King County Washington
- liquefaction
- magnitude
- Northern California
- numerical analysis
- plate tectonics
- prediction
- probability
- recurrence interval
- risk assessment
- Salt Lake City Utah
- Salt Lake County Utah
- Seattle Washington
- seismic intensity
- shallow-focus earthquakes
- slope stability
- slopes
- spectra
- spectral analysis
- statistical analysis
- subduction
- tectonics
- United States
- Utah
- Washington
- yield strength
- Yerba Buena Island
- slide blocks
- megathrust earthquakes
Latitude & Longitude
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