Probabilistic liquefaction-induced lateral spread hazard mapping and its application to Utah County, Utah

Sharifi-Mood, Mahyar; Gillins, Daniel T.; Franke, Kevin W.; Harper, Jasmyn N.; Bartlett, Steven J.; Olsen, Michael J.

doi:10.1016/j.enggeo.2018.01.015

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Probabilistic liquefaction-induced lateral spread hazard mapping and its application to Utah County, Utah

2018
By Sharifi-Mood, Mahyar ; Gillins, Daniel T. ; Franke, Kevin W. ; ...
Source: Engineering Geology, 237, 76-91

[PDF-1.82 MB]

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Journal Title:

Engineering Geology
Personal Author:

Sharifi-Mood, Mahyar ; Gillins, Daniel T. ; Franke, Kevin W. ; Harper, Jasmyn N. ; Bartlett, Steven J. ; ... More +

Sharifi-Mood, Mahyar ; Gillins, Daniel T. ; Franke, Kevin W. ; Harper, Jasmyn N. ; Bartlett, Steven J. ; Olsen, Michael J. Less -
NOAA Program & Office:

NGS (Office of National Geodetic Survey) ; NOS (National Ocean Service)

NGS (Office of National Geodetic Survey) ; NOS (National Ocean Service) Less -
Description:

Earthquake-induced liquefaction may result in the lateral spread displacement of soil down gently sloping ground or towards a free-face, causing severe and costly damage to various facilities, bridges, buildings and other critical infrastructure. Despite the availability of analytical methods, most engineers currently use empirical or semi-empirical regression models to estimate liquefaction-induced lateral spread displacements at specific sites. However, the application of these regression models for regional mapping over a large geographic areas can be difficult because of challenges associated with the adequate characterization of subsurface soil and groundwater conditions, geotechnical properties, regional topography, and uncertainties associated with the causative seismic loading. To address these challenges, this paper presents a new and fully probabilistic procedure for regional hazard mapping of liquefaction-induced lateral spread displacement. The mapping process is demonstrated through an implementation in Utah County, Utah. To demonstrate the type of lateral spread displacement hazard maps possible, maps corresponding to return periods of 1033 and 2475 years are developed for Utah County, Utah. The proposed procedure incorporates topographical data from airborne lidar surveys and geotechnical and geological data from available maps and subsurface explorations. It accounts for uncertainties in the soil properties, seismic loading, and the empirical models for predicting lateral spread displacement using Monte Carlo simulations.
Keywords:

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Geology Geotechnical Engineering And Engineering Geology
Source:

Engineering Geology, 237, 76-91
DOI:

https://doi.org/10.1016/j.enggeo.2018.01.015
ISSN:

0013-7952
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PDF
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Elsevier BV
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Journal Article
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urn:sha-512:8902e36dc0633554e5f9eee6e9c68b4718c43ba8ec0ed2af20061eaf4651e81803171f9b867c9f0ba11a3d54692430fb7f3c3f054f4bab6c9fb1bc6efcb05960
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Probabilistic liquefaction-induced lateral spread hazard mapping and its application to Utah County, Utah

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