Aleš Oblak (Author), Mirko Kosič (Author), António Viana da Fonseca (Author), Janko Logar (Author)

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.

Keywords

gradbeništvo;likvifakcija tal;krivulja ranljivosti;nasipi prometnic;FLAC;PM4Sand;civil engineering;soil liquefaction;fragility curve;traffic embankment;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
UDC: 624
COBISS: 30533379 Link will open in a new window
ISSN: 2076-3417
Parent publication: Applied sciences
Views: 381
Downloads: 114
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Other data

Secondary language: Slovenian
Secondary keywords: gradbeništvo;likvifakcija tal;krivulja ranljivosti;nasipi prometnic;FLAC;PM4Sand;
Type (COBISS): Article
Pages: str. 1-19
Volume: ǂLetn. ǂ10
Issue: ǂšt. ǂ19
Chronology: 2020
DOI: 10.3390/app10196832
ID: 12574607