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Fragility assessment of traffic embankments exposed to earthquake-induced liquefaction
ID Oblak, Aleš (Author), ID Kosič, Mirko (Author), ID Viana da Fonseca, António (Author), ID Logar, Janko (Author)

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Abstract
In this study, a vulnerability analysis of road and railway embankments to earthquake-induced liquefaction deformations was carried out. The result of the vulnerability analysis was a set of fragility curves that were obtained for several embankment and soil-profile geometries, as well as for the material properties of the liquefiable layer. The fragility curves were based on the numerical calculations obtained from FLAC 2D software in conjunction with the PM4Sand material model used for simulating the behavior of liquefaction-susceptible soils during dynamic shaking. The fragility analysis was performed using an incremental dynamic analysis approach considering a set of 30 ground motions and at least eight intensity levels. Permanent vertical displacement of the middle top point of the embankment was selected as the damage parameter, while the intensity measure was expressed in terms of peak ground acceleration at bedrock. Fragility curves were derived for three damage states, including minor, moderate and extensive damage, based on threshold values proposed in the literature. The influence of a single model variable was examined through comparison of the fragility curves.

Language:English
Keywords:civil engineering, soil liquefaction, fragility curve, traffic embankment, FLAC, PM4Sand
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Year:2020
Number of pages:19 str.
Numbering:Vol. 10, iss. 19, art. 6832
PID:20.500.12556/RUL-124817 This link opens in a new window
UDC:624
ISSN on article:2076-3417
DOI:10.3390/app10196832 This link opens in a new window
COBISS.SI-ID:30533379 This link opens in a new window
Publication date in RUL:19.02.2021
Views:907
Downloads:212
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Record is a part of a journal

Title:Applied sciences
Shortened title:Appl. sci.
Publisher:MDPI
ISSN:2076-3417
COBISS.SI-ID:522979353 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.10.2020

Secondary language

Language:Slovenian
Keywords:gradbeništvo, likvifakcija tal, krivulja ranljivosti, nasipi prometnic, FLAC, PM4Sand

Projects

Funder:EC - European Commission
Funding programme:H2020
Project number:700748
Name:Assessment and mitigation of liquefaction potential across Europe: a holistic approach to protect structures / infrastructures for improved resilience to earthquake-induced liquefaction disasters
Acronym:LIQUEFACT

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