Seismic risk assessment of energy pipelines under permanent ground deformation due to fault rupture
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Dey, Sandip
issued: 2021-11-26T21:28:19Z
issued: 2021
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: This thesis entails developing analysis methods for evaluating seismic risk to oil and gas pipelines due to permanent ground deformation resulting from fault rupture. To address this, three modules are identified as core part of this research. Firstly, a finite element (FE) model for oil and gas pipeline crossing a seismic induced fault line is developed. Subsequently, uncertainty in input parameters is introduced in the developed FE model and analyzed in a multi-fidelity approach. Finally, probabilistic regional ground deformation due to fault rupture is assessed and integrated with the pipe-soil structural model. A detailed FE analysis technique to study the behavior of buried continuous pipelines crossing fault movements is developed and established with appropriate evaluations. A non-linear sand constitutive model is adopted and implemented in commercial FE package ABAQUS. The adopted material model is first evaluated using available tri-axial test results. This material model is thereafter suitably calibrated for a large-scale test based on direct shear soil test data for that experiment. The pipe-soil FE model is then evaluated against full-scale experimental results. Subsequently, structural response of a buried continuous steel pipeline undergoing fault rupture deformation is studied in a systematic manner. A detailed and efficient analysis framework for design of buried continuous steel pipelines crossing faults is proposed and explained with a case study using Taguchi method for design of experiments. Further to this, uncertainty in input parameters, such as pipe diameter, pipe wall thickness, young’s modulus, yield strength, ultimate strength, sand confining pressure, sand relative density, operating temperature and operating pressure is considered using a multi-fidelity approach which relies on analyses results from a small number of detailed structural analyses and large numbers of simplified structural analyses. The approach efficiently relies on both …
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/80273
note: Seismic Risk Assessment of EnergyPipelines under Permanent GroundDeformation due to Fault RupturebySandip DeyB.E., Indian Institute of Engineering Science and Technology Shibpur, 2012M.A.Sc., Concordia University Montreal, 2014A THESIS SUBMITTED IN PARTIAL FULFILLMENT OFTHE REQUIREMENTS FOR THE DEGREE OFDOCTOR OF PHILOSOPHYinThe College of Graduate Studies(Civil Engineering)THE UNIVERSITY OF BRITISH COLUMBIA(Okanagan)November 2021© Sandip Dey, 2021The following individuals certify that they have read, and recommendto the College of Graduate Studies for acceptance, a thesis/dissertation en-titled:Seismic Risk Assessment of Energy Pipelines under Permanent GroundDeformation due to Fault Rupturesubmitted by Sandip Dey in partial fulfilment of the requirements of thedegree of Doctor of PhilosophySolomon Tesfamariam, School of EngineeringSupervisorKatsuichiro Goda, Western UniversitySupervisory Committee MemberAbbas Milani, School of EngineeringSupervisory Committee MemberDimitry SediakoUniversity ExaminerIan MooreExternal ExamineriiAbstractThis thesis entails developing analysis methods for evaluating seismicrisk to oil and gas pipelines due to permanent ground deformation resultingfrom fault rupture. To address this, three modules are identified as corepart of this research. Firstly, a finite element (FE) model for oil and gaspipeline crossing a seismic induced fault line is developed. Subsequently,uncertainty in input parameters is introduced in the developed FE modeland analyzed in a multi-fidelity approach. Finally, probabilistic regionalground deformation due to fault rupture is assessed and integrated with thepipe-soil structural model.A detailed FE analysis technique to study the behavior of buried contin-uous pipelines crossing fault movements is developed and established withappropriate evaluations. A non-linear sand constitutive model is adoptedand implemented in commercial FE package ABAQUS. The adopted ma-terial model is first evaluated using available tri-a…
has type: Thesis/Dissertation
date issued: 2022-02
is shown at: 10.14288/1.0403838
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Tesfamariam, Solomon
type: Text
identifier URI: http://hdl.handle.net/2429/80273