Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Estimation of Permanent Ground Displacement Capacities for Corroded Pipelines
Permanent ground displacements (PGD) occur either due to earthquake-induced ground failures, such as lateral spreading, or due to landslides, and in turn, could induce significant strains in buried pipelines. When the induced strains exceed the strain capacity, buried pipelines could suffer potential rupture or compression/buckling failures as evidenced from past earthquake events. Research efforts, including rigorous experimentation and numerical analyses, have led to procedures for evaluating and quantifying pipe stress/strain capacities to withstand PGDs of intact pipelines subjected to ground movements. When pipelines that have experienced corrosion are encountered, their PGD capacities would be certainly different from those of intact pipelines. In pipeline risk assessments, there is a need to account for the corrosion effects on the PGD capacity—in particular, this requires having relatively simpler ways to without resorting to rigorous analyses to address this multi-hazard problem. With this impetus, in the present study, different available approaches were explored to obtain the PGD capacities of corroded pipelines. As the response is dependent on the orientation of pipelines with respect to the ground movements, the PGD capacities were determined considering several cases of straight steel pipe sections subjected to PGDs in both longitudinal and transverse direction to the pipe alignment. Assuming that corrosion effects could be represented by an equivalent pipe wall thickness (i.e., uniform reduction in pipe wall thickness due to corrosion), modification factors were developed to adjust the PGD capacities of intact pipelines to account for different degrees of corrosion.
Estimation of Permanent Ground Displacement Capacities for Corroded Pipelines
Permanent ground displacements (PGD) occur either due to earthquake-induced ground failures, such as lateral spreading, or due to landslides, and in turn, could induce significant strains in buried pipelines. When the induced strains exceed the strain capacity, buried pipelines could suffer potential rupture or compression/buckling failures as evidenced from past earthquake events. Research efforts, including rigorous experimentation and numerical analyses, have led to procedures for evaluating and quantifying pipe stress/strain capacities to withstand PGDs of intact pipelines subjected to ground movements. When pipelines that have experienced corrosion are encountered, their PGD capacities would be certainly different from those of intact pipelines. In pipeline risk assessments, there is a need to account for the corrosion effects on the PGD capacity—in particular, this requires having relatively simpler ways to without resorting to rigorous analyses to address this multi-hazard problem. With this impetus, in the present study, different available approaches were explored to obtain the PGD capacities of corroded pipelines. As the response is dependent on the orientation of pipelines with respect to the ground movements, the PGD capacities were determined considering several cases of straight steel pipe sections subjected to PGDs in both longitudinal and transverse direction to the pipe alignment. Assuming that corrosion effects could be represented by an equivalent pipe wall thickness (i.e., uniform reduction in pipe wall thickness due to corrosion), modification factors were developed to adjust the PGD capacities of intact pipelines to account for different degrees of corrosion.
Estimation of Permanent Ground Displacement Capacities for Corroded Pipelines
Lecture Notes in Civil Engineering
Gupta, Rishi (Herausgeber:in) / Sun, Min (Herausgeber:in) / Brzev, Svetlana (Herausgeber:in) / Alam, M. Shahria (Herausgeber:in) / Ng, Kelvin Tsun Wai (Herausgeber:in) / Li, Jianbing (Herausgeber:in) / El Damatty, Ashraf (Herausgeber:in) / Lim, Clark (Herausgeber:in) / Jadhav, Prajakta (Autor:in) / Wijewickreme, Dharma (Autor:in)
Canadian Society of Civil Engineering Annual Conference ; 2022 ; Whistler, BC, BC, Canada
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 ; Kapitel: 31 ; 471-481
06.02.2024
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
LF1--Permanent Ground Displacement Effects on Buried Pipelines
| British Library Conference Proceedings | 1993
Probabilistic Approach for Reliability Estimation of Corroded Pipelines
| British Library Online Contents | 2006
Strength of corroded pipelines
| British Library Online Contents | 2009
Propagating buckles in corroded pipelines
| Online Contents | 2001