The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling

Considering the high importance of energy-carrying buried pipelines in lifeline network, it is vital to understand this kind of structures against seismic dynamic excitations.In this paper, seismic behavior in some part of a buried pipe with horizontal bend under Bam earthquake record effect (2003,...

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Autores principales:	masoud nekooei, Sahand Sarioletlagh Fard, Asghar VataniOskouei, Armin Azimi Nejad
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2020
Materias:	dynamic analysis non-linearanalysis horizontal bent pipe pipe-soil interaction finite elementanalysis abaqus Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/7099423abf8747d684aeb36726e76662
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spelling	oai:doaj.org-article:7099423abf8747d684aeb36726e766622021-11-08T15:54:03ZThe behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling2476-39772538-261610.22065/jsce.2019.148084.1657https://doaj.org/article/7099423abf8747d684aeb36726e766622020-10-01T00:00:00Zhttps://www.jsce.ir/article_81569_dc09da15e852b03baa987e7adb32bd52.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616Considering the high importance of energy-carrying buried pipelines in lifeline network, it is vital to understand this kind of structures against seismic dynamic excitations.In this paper, seismic behavior in some part of a buried pipe with horizontal bend under Bam earthquake record effect (2003, Iran) is studied experimentally and numerically using ABAQUS software. In the numerical model, the pipe is modelled via a three-dimensional four-node shell system, and the soil is modeled using elastoplastic properties.As non-linear dynamic analysis, with applying Bam earthquake record effects, a thorough parametric studied are performed on different pipe diameter and thicknesses, and then the axial strain and plastic strain values obtained from the strain gauges along the horizontally-bent pipe are compared with the numerical model results.Also, a correlation is obtained which relates the location of plastic hinge formation point on the pipe to the pipe diameter and thickness. The comparison of numerical model and experimental results show that in buried horizontally-bent pipes, the most axial strain, plastic strain, and stress in the pipe take place in the fixed wedge and near to the fault line. In the buried horizontally-bent pipes, with increasing the pipe diameter to thickness ratio this location will get more distance from the fault line.Also, the pipelines with larger diameters have lower pipe-soil strain ratio (εp/s) values causing lower axial and plastic strains.masoud nekooeiSahand Sarioletlagh FardAsghar VataniOskoueiArmin Azimi NejadIranian Society of Structrual Engineering (ISSE)articledynamic analysisnon-linearanalysishorizontal bent pipepipe-soil interactionfinite elementanalysisabaqusBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss شماره ویژه 3, Pp 167-184 (2020)
institution	DOAJ
collection	DOAJ
language	FA
topic	dynamic analysis non-linearanalysis horizontal bent pipe pipe-soil interaction finite elementanalysis abaqus Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	dynamic analysis non-linearanalysis horizontal bent pipe pipe-soil interaction finite elementanalysis abaqus Bridge engineering TG1-470 Building construction TH1-9745 masoud nekooei Sahand Sarioletlagh Fard Asghar VataniOskouei Armin Azimi Nejad The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
description	Considering the high importance of energy-carrying buried pipelines in lifeline network, it is vital to understand this kind of structures against seismic dynamic excitations.In this paper, seismic behavior in some part of a buried pipe with horizontal bend under Bam earthquake record effect (2003, Iran) is studied experimentally and numerically using ABAQUS software. In the numerical model, the pipe is modelled via a three-dimensional four-node shell system, and the soil is modeled using elastoplastic properties.As non-linear dynamic analysis, with applying Bam earthquake record effects, a thorough parametric studied are performed on different pipe diameter and thicknesses, and then the axial strain and plastic strain values obtained from the strain gauges along the horizontally-bent pipe are compared with the numerical model results.Also, a correlation is obtained which relates the location of plastic hinge formation point on the pipe to the pipe diameter and thickness. The comparison of numerical model and experimental results show that in buried horizontally-bent pipes, the most axial strain, plastic strain, and stress in the pipe take place in the fixed wedge and near to the fault line. In the buried horizontally-bent pipes, with increasing the pipe diameter to thickness ratio this location will get more distance from the fault line.Also, the pipelines with larger diameters have lower pipe-soil strain ratio (εp/s) values causing lower axial and plastic strains.
format	article
author	masoud nekooei Sahand Sarioletlagh Fard Asghar VataniOskouei Armin Azimi Nejad
author_facet	masoud nekooei Sahand Sarioletlagh Fard Asghar VataniOskouei Armin Azimi Nejad
author_sort	masoud nekooei
title	The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
title_short	The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
title_full	The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
title_fullStr	The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
title_full_unstemmed	The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
title_sort	behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2020
url	https://doaj.org/article/7099423abf8747d684aeb36726e76662
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The behavior of horizontally bent buried pipes along faults slip with numerical and experimental modelling

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