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Geotechnical Demands for Characteriz...

Rose, Hailey-Rae.

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Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components./
Author:	Rose, Hailey-Rae.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	170 p.
Notes:	Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
Contained By:	Dissertations Abstracts International85-06B.
Subject:	Architectural engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30812302
ISBN:	9798381163094

Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components.
Rose, Hailey-Rae.

Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 170 p.

Source: Dissertations Abstracts International, Volume: 85-06, Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2023.

Buried pipelines are susceptible to damage when subject to permanent ground displacement (PGD), due to frictional forces that develop from relative movement between the soil and pipeline. These pipeline systems are constructed in various ways, including continuous and hybrid-segmented systems, that accommodate induced displacements differently because of their jointing mechanisms. The configuration and displacement response mechanisms directly impact the frictional forces imposed on the pipeline. Significant soil-structure interaction exists, especially at enlarged joints, where the cross-sectional area exceeds the pipe barrel. Although the interaction at these locations is similar to the behavior of vertical anchor plates, which rely on passive earth pressures for their performance, these interactions are not well understood in the context of pipeline systems. This doctoral thesis addresses the current gap in knowledge regarding pipe response to PGD through experimental and analytical approaches. Centrifuge testing is employed to model buried pipes with enlarged joints. The centrifuge test chamber boundaries are determined through experiments designed to investigate the influence of rigid boundaries on the force-displacement response of a pipe pulled through a soil mass. These tests define the necessary boundary conditions to limit boundary effects, ensuring the centrifuge test results represent in-situ conditions. Next, a series of tests varying joint size and burial depth were conducted to measure these parameters' effects on the force-displacement response. These test results and mechanics-based representations of soil resistance on vertical anchor plates are used to develop an analytical prediction of the force developed at a joint face. The analytical solution for individual joint response compares favorably to previous pipe-pull and vertical anchor plate tests. Finally, the predicted force-displacement response for an individual pipe segment is used as an input for a proposed analytical framework that calculates total soil demands on a multi-segment pipeline. The framework applies to numerous pipeline systems since it depends on a pipe's material properties, the joint characteristics, and ground movement parameters. With an understanding of soil demands along a pipeline, engineers can determine the system capacity necessary to ensure adequate pipe performance, resulting in fewer pipeline repairs and quicker recovery post-disaster.

ISBN: 9798381163094Subjects--Topical Terms:

3174102
Architectural engineering.
Subjects--Index Terms:

Axial loading

Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components.
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020 $a 9798381163094
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040 $a MiAaPQ $c MiAaPQ
100 1 $a Rose, Hailey-Rae. $0 (orcid)0009-0005-7778-7571 $3 3774045
245 1 0 $a Geotechnical Demands for Characterizing Performance of Pipeline Systems With Enlarged Components.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 170 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
500 $a Advisor: Wham, Brad P.;Liel, Abbie B.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2023.
520 $a Buried pipelines are susceptible to damage when subject to permanent ground displacement (PGD), due to frictional forces that develop from relative movement between the soil and pipeline. These pipeline systems are constructed in various ways, including continuous and hybrid-segmented systems, that accommodate induced displacements differently because of their jointing mechanisms. The configuration and displacement response mechanisms directly impact the frictional forces imposed on the pipeline. Significant soil-structure interaction exists, especially at enlarged joints, where the cross-sectional area exceeds the pipe barrel. Although the interaction at these locations is similar to the behavior of vertical anchor plates, which rely on passive earth pressures for their performance, these interactions are not well understood in the context of pipeline systems. This doctoral thesis addresses the current gap in knowledge regarding pipe response to PGD through experimental and analytical approaches. Centrifuge testing is employed to model buried pipes with enlarged joints. The centrifuge test chamber boundaries are determined through experiments designed to investigate the influence of rigid boundaries on the force-displacement response of a pipe pulled through a soil mass. These tests define the necessary boundary conditions to limit boundary effects, ensuring the centrifuge test results represent in-situ conditions. Next, a series of tests varying joint size and burial depth were conducted to measure these parameters' effects on the force-displacement response. These test results and mechanics-based representations of soil resistance on vertical anchor plates are used to develop an analytical prediction of the force developed at a joint face. The analytical solution for individual joint response compares favorably to previous pipe-pull and vertical anchor plate tests. Finally, the predicted force-displacement response for an individual pipe segment is used as an input for a proposed analytical framework that calculates total soil demands on a multi-segment pipeline. The framework applies to numerous pipeline systems since it depends on a pipe's material properties, the joint characteristics, and ground movement parameters. With an understanding of soil demands along a pipeline, engineers can determine the system capacity necessary to ensure adequate pipe performance, resulting in fewer pipeline repairs and quicker recovery post-disaster.
590 $a School code: 0051.
650 4 $a Architectural engineering. $3 3174102
650 4 $a Geotechnology. $3 1018558
653 $a Axial loading
653 $a Buried infrastructure
653 $a Enlarged components
653 $a Geotechnical engineering
653 $a Pipelines
653 $a Structural engineering
690 $a 0543
690 $a 0428
690 $a 0462
710 2 $a University of Colorado at Boulder. $b Civil, Environmental, and Architectural Engineering. $3 3350108
773 0 $t Dissertations Abstracts International $g 85-06B.
790 $a 0051
791 $a Ph.D.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30812302