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RISNovel Remediation for Buried Pipelines under Ground Deformation: Large-Scale Laboratory Testing and Numerical Modeling
Publisher: ASCE
Abstract: A novel mitigation technique is proposed in this paper to effectively improve the safety and integrity of buried pipelines subjected to ground deformation and to mitigate the detrimental effects of ground deformation on ...
Novel Remediation for Buried Pipelines under Ground Deformation: Cross-Sectional Testing and an Analytical Modeling Approach
Publisher: ASCE
Abstract: This paper proposes a novel mitigation approach to improve the safety and structural integrity of buried steel transmission pipelines subjected to ground deformation. This method involves altering the boundary condition ...
Effects of Permanent Ground Deformation Patterns on Strain Demand of Pressurized Buried Continuous Steel Pipelines
Publisher: ASCE
Abstract: The structural integrity of buried pipelines is often threatened by permanent ground deformation (PGD) within the pipeline route. Oil and gas transmission steel pipelines, which usually traverse several kilometers, are ...
Modeling the Deformation Response of High Strength Steel Pipelines—Part I: Material Characterization to Model the Plastic Anisotropy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design equations for pipelines subjected to both internal pressure and longitudinal loading are based on the isotropic hardening plasticity model. However, high strength steel (HSS) pipelines ...
Modeling the Deformation Response of High Strength Steel Pipelines—Part II: Effects of Material Characterization on the Deformation Response of Pipes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The material model proposed in Part I (Neupane et al. , 2012, “Modeling the Deformation Response of High Strength Steel Pipelines—Part I: Material Characterization to Model the Plastic Anisotropy,” ...
Probability of Failure Associated with Design and Safety Factors for Intact and Corroded Pipes under Internal Pressure
Publisher: ASCE
Abstract: The assessment of reliability levels associated with the design and safety factors (DFs and SFs) is important for modern pipeline engineering to achieve probabilistic design using a conventional deterministic format. To ...
Probabilistic Analysis of Pipelines in Geohazard Zones Using a Novel Approach for Strain Calculation
Publisher: ASCE
Abstract: This paper presents an approach for probabilistic analysis of pipelines buried through geohazard-prone areas that induce permanent ground movements potentially. In this approach, an easy-to-implement response prediction ...
Simulation of Crack Propagation in API 5L X52 Pressurized Pipes Using XFEM-Based Cohesive Segment Approach
Publisher: ASCE
Abstract: The cohesive zone model (CZM) is one of the most widely used damage models to describe the fracture processes of brittle and ductile materials, and has been usually combined with the conventional finite-element method ...
Effects of Loading Sequences on Remaining Life of Plain Dents in Buried Liquid Pipelines
Publisher: American Society of Civil Engineers
Abstract: The integrity assessment of dents in liquid pipelines, as regulated by codes and standards, is based mostly on depth and threat integration, with strain analysis incorporated as a nonmandatory recommendation for gas ...