Effect of seismic and soil parameter uncertainties on seismic damage of buried segmented pipeline

Wijaya, Hendrik; Rajeev, Pathmanathan; Gad, Emad

doi:10.1016/j.trgeo.2019.100274

Cited by 23 publications

(8 citation statements)

References 27 publications

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“…It is evident from works by [59][60][61][62][63][64][65][66][67][68] that variations in soil conditions can impact pipeline structural response significantly. Additionally, pipe geometry, including diameter and wall thickness, can also influence the pipeline's structural response, as established by [63,65,66].…”

Section: Uncertainty Quantification Using Multi-fidelity Surrogate Mo...mentioning

confidence: 99%

“…Both approaches practically require a large number of analyses to be performed. Hence, its quite reasonable that traditionally, uncertainty quantification exercises for buried pipelines have been performed using simplified numerical models or analytical models [1,7,[59][60][61][62][63][64][65][66][67][68] requiring minimal computational effort.…”

Section: Uncertainty Quantification Using Multi-fidelity Surrogate Mo...mentioning

confidence: 99%

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Probabilistic Seismic Risk Analysis of Buried Pipelines Due to Permanent Ground Deformation for Victoria, BC

Dey

Tesfamariam

2022

Geotechnics

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Buried continuous pipelines are prone to failure due to permanent ground deformation as a result of fault rupture. Since the failure mode is dependent on a number of factors, a probabilistic approach is necessary to correctly compute the seismic risk. In this study, a novel method to estimate regional seismic risk to buried continuous pipelines is presented. The seismic risk assessment method is thereafter illustrated for buried gas pipelines in the City of Victoria, British Columbia. The illustrated example considers seismic hazard from the Leech River Valley Fault Zone (LRVFZ). The risk assessment approach considers uncertainties of earthquake rupture, soil properties at the site concerned, geometric properties of pipes and operating conditions. Major improvements in this method over existing comparable studies include the use of stochastic earthquake source modeling and analytical Okada solutions to generate regional ground deformation, probabilistically. Previous studies used regression equations to define probabilistic ground deformations along a fault. Secondly, in the current study, experimentally evaluated 3D shell and continuum pipe–soil finite element models were used to compute pipeline responses. Earlier investigations used simple soil spring–beam element pipe models to evaluate the pipeline response. Finally, the current approach uses the multi-fidelity Gaussian process surrogate model to ensure efficiency and limit required computational resources. The developed multi-fidelity Gaussian process surrogate model was successfully cross-validated with high coefficients of determination of 0.92 and 0.96. A fragility curve was generated based on failure criteria from ALA strain limits. The seismic risks of pipeline failure due to compressive buckling and tensile rupture at the given site considered were computed to be 1.5 percent and 0.6 percent in 50 years, respectively.

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Section: Uncertainty Quantification Using Multi-fidelity Surrogate Mo...mentioning

confidence: 99%

Section: Uncertainty Quantification Using Multi-fidelity Surrogate Mo...mentioning

confidence: 99%

Probabilistic Seismic Risk Analysis of Buried Pipelines Due to Permanent Ground Deformation for Victoria, BC

Dey

Tesfamariam

2022

Geotechnics

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“…On the contrary, a few analytical-based fragility relations have been developed based on mechanistic or numerical models for CI pipelines with lead-caulked joints (e.g. O’Rourke and Vargas-Londono, 2016; Wijaya et al, 2019). For instance, based on simplified mechanical models, the interrelationship between segmented pipe damage and tensile ground strain was investigated by O’Rourke and Vargas-Londono (2016).…”

Section: Introductionmentioning

confidence: 99%

“…For instance, based on simplified mechanical models, the interrelationship between segmented pipe damage and tensile ground strain was investigated by O’Rourke and Vargas-Londono (2016). More recently, based on the beam-on-spring modeling technique, Wijaya et al (2019) evaluated the effect of earthquake and soil uncertainties on the seismic performance of 150-mm nominal diameter (DN) pipelines.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 summarizes several fragility relations developed for buried CI pipelines since 2000. To the authors’ knowledge, there is only one numerical-based study for the fragility relations of CI pipelines with lead-caulked joints (Wijaya et al, 2019). As listed in Table 1, this numerical-based model is not applicable to pipelines with DN larger than 150 mm.…”

Section: Introductionmentioning

confidence: 99%

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Analytical fragility relation for buried cast iron pipelines with lead-caulked joints based on machine learning algorithms

Zhao,

Li,

et al. 2023

Earthquake Spectra

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A new numerical-based fragility relation for cast iron (CI) pipelines with lead-caulked joints subjected to seismic body-wave propagation is proposed in this article. Two-dimensional 1600-m-length finite element models for pipelines buried in sand are developed in OpenSees. Parametric analysis is performed to investigate the influence of various parameters on the damage estimates of the buried pipelines. Numerical analyses are conducted to estimate the repair rates ( RR) for CI pipelines subjected to wave propagation. The predictive model for RR is thus developed based on the numerical results and the Gaussian Process Regression approach. The model developed employs four predictor variables, namely, the peak particle velocity and wave propagation velocity along axial direction, the maximum soil shear force per unit length, and the outer diameter of pipelines, exhibiting desirable performance in terms of predictive efficiency and generalization. The performance of the developed relation is compared to several existing fragility relations. The new fragility relation can be used to estimate RR for CI pipelines with lead-caulked joints with outer diameters ranging from 169 to 1554 mm subjected to seismic body-wave propagation.

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Effects of soil spatial variability on the seismic response of multi-span simply-supported highway bridges

Guajardo,

Pinto,

Astroza

2024

Bull Earthquake Eng

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Effect of seismic and soil parameter uncertainties on seismic damage of buried segmented pipeline

Cited by 23 publications

References 27 publications

Probabilistic Seismic Risk Analysis of Buried Pipelines Due to Permanent Ground Deformation for Victoria, BC

Probabilistic Seismic Risk Analysis of Buried Pipelines Due to Permanent Ground Deformation for Victoria, BC

Analytical fragility relation for buried cast iron pipelines with lead-caulked joints based on machine learning algorithms

Effects of soil spatial variability on the seismic response of multi-span simply-supported highway bridges

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