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Assessment supporting the use of outcropping rock evolutionary intensity measures for prediction of liquefaction consequences

Zach Bullock, Shideh Dashti, Abbie B. Liel, Keith A. Porter and Zana Karimi
Assessment supporting the use of outcropping rock evolutionary intensity measures for prediction of liquefaction consequences
Earthquake Spectra (November 2019) 35 (4): 1899-1926

Abstract

This study evaluates a variety of intensity measures (IMs) for predicting the liquefaction-induced residual settlement and tilt of shallow-founded structures. We use data from both numerical and physical (centrifuge) models of soil-foundation-structure systems. The relative quality of these IMs is quantified in terms of efficiency, sufficiency, and predictability. We consider both scalar and vector-valued IMs and evaluate the relative performance of IMs recorded at different locations (outcropping rock, within rock, far-field, and foundation) from nonlinear and equivalent-linear simulations. Cumulative absolute velocity (CAV) at outcropping rock is the optimum IM for predicting foundation settlement, while either outcropping rock CAV, peak ground velocity, or peak incremental ground velocity is optimum for predicting permanent foundation tilt. Vector IMs offer improvements to efficiency and sufficiency but may be impractical to predict.


ISSN: 8755-2930
EISSN: 1944-8201
Serial Title: Earthquake Spectra
Serial Volume: 35
Serial Issue: 4
Title: Assessment supporting the use of outcropping rock evolutionary intensity measures for prediction of liquefaction consequences
Affiliation: University of Colorado at Boulder, Civil, Environmental, and Architectural Engineering Department, Boulder, CO, United States
Pages: 1899-1926
Published: 201911
Text Language: English
Publisher: Earthquake Engineering Research Institute, Berkeley, CA, United States
References: 73
Accession Number: 2021-006721
Categories: SeismologyEngineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 6 tables, block diag.
Secondary Affiliation: AECOM Denver, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202105
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