Effects of steel properties on the local buckling response of high strength pipelines subjected to reverse faulting

Liu, Xiaoben; Zhang, Hong; Li, Meng; Xia, Mao; Zheng, Wei; Wu, Kai; Han, Yinshan

doi:10.1016/j.jngse.2016.05.036

Cited by 47 publications

(23 citation statements)

References 15 publications

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“…A refined mesh was achieved by sensitivity analysis with 54 elements discretized in circumferential direction. In addition, setting the longitudinal length of all the shell elements to be 0.04 m was proven to be accurate for simulating the wrinkling behavior of pipe induced by local buckling [33]. The material stress-strain model for X80 line pipeline considered in this study is plotted in Figure 3.…”

Section: Modelling Of Pipementioning

confidence: 99%

“…For numerical investigation, the section axial force in the buckled area can be monitored for identification of onset of local buckling of pipe (Liu et al [33,49]). The section axial force in this study represents the local longitudinal internal force of pipe segments in the buckled area.…”

Section: Baseline Analysis For the Local Buckling Failure Of X80 Pipementioning

confidence: 99%

“…Some attempts were made by Liu et al to investigate the effects of yield strength and strain hardening parameter on the local failure behavior of high-strength pipes subjected to reverse faulting [33]. Kainat et al investigated the influences of geometric imperfections on high strength pipe's buckling behaviors [34].…”

Section: Introductionmentioning

confidence: 99%

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Local Buckling Behavior and Plastic Deformation Capacity of High-Strength Pipe at Strike-Slip Fault Crossing

Liu

Zhang

Wang

et al. 2017

Metals

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Abstract:As a typical hazard threat for buried pipelines, an active fault can induce large plastic deformation in a pipe, leading to rupture failure. The mechanical behavior of high-strength X80 pipeline subjected to strike-slip fault displacements was investigated in detail in the presented study with parametric analysis performed by the finite element model, which simulates pipe and soil constraints on pipe by shell and nonlinear spring elements respectively. Accuracy of the numerical model was validated by previous full-scale experimental results. Insight of local buckling response of high-strength pipe under compressive strike-slip fault was revealed. Effects of the pipe-fault intersection angle, pipe operation pressure, pipe wall thickness, soil parameters and pipe buried depth on critical section axial force in buckled area, critical fault displacement, critical compressive strain and post buckling response were elucidated comprehensively. In addition, feasibility of some common buckling failure criteria (i.e., the CSA Z662 model proposed by Canadian Standard association, the UOA model proposed by University of Alberta and the CRES-GB50470 model proposed by Center of Reliable Energy System) was discussed by comparing with numerical results. This study can be referenced for performance-based design and assessment of buried high-strength pipe in geo-hazard areas.

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Section: Modelling Of Pipementioning

confidence: 99%

Section: Baseline Analysis For the Local Buckling Failure Of X80 Pipementioning

confidence: 99%

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Local Buckling Behavior and Plastic Deformation Capacity of High-Strength Pipe at Strike-Slip Fault Crossing

Liu

Zhang

Wang

et al. 2017

Metals

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“…Xia et al [6] proposed a semi-analytical model for buried steel pipelines crossing subsidence areas considering the elastoplasticity of the pipe material and the nonlinear pipe-soil interaction forces. Liu et al [7][8][9][10][11] studied the strain response of high strength steel pipelines crossing active faults systematically through series of finite element method-based numerical models. In his models, soil constraints on pipe were modeled by nonlinear soil spring elements and pipes were simulated by pipe or shell elements.…”

Section: Introductionmentioning

confidence: 99%

Stress and Deformation Analysis of Buried Gas Pipelines Subjected to Buoyancy in Liquefaction Zones

Xia

Zhang

2018

Energies

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Buried pipelines are the main means of long distance transportation of natural gas. These pipelines are in high risk crossing liquefaction areas due to large deformations and stresses that may exist in pipe induced by the buoyancy load. In this study, a systematic analytical and numerical analysis were performed to investigate the mechanical behavior of a buried gas pipeline subjected to buoyancy in liquefaction areas. Soil constraints on pipe were considered accurately in the proposed models through soil spring assumptions. Effects of axial forces on pipe’s bending deformation were also considered via the governing equations for beam under bending and tension. Deformation compatibility condition was utilized to derive the axial forces in pipe. The accuracy of the proposed analytical model was validated by comparing its results with those derived by an established rigorous finite element model. In addition, parametric analysis was finally performed using the analytical model to study the influences of pipe diameter, pipe wall thickness, soil spring stiffness and width of liquefaction zone on pipe’s mechanical responses. This study can be referenced in the strength analysis and performance based safety evaluation of buried gas pipelines crossing liquefaction areas.

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“…Liu [21,22,23,24,40] conducted a series of numerical analysis for buried high strength gas pipeline with emphasis on their strain demand under fault displacements. Saberi [25] proposed a semi analytical model for strain prediction of elbow by combined use of finite element method and nonlinear regression method.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Strength Evaluation of an Exposed River Crossing Pipeline with Casing Under Flood Load

Liu¹,

Zhang²,

Xia³

et al. 2018

Period. Polytech. Civil Eng.

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Pipelines in service always experience complicated loadings induced by operational and environmental conditions. Flood is one of the common natural hazard threats for buried steel pipelines. One exposed river crossing X70 gas pipeline induced by flood erosion was used as a prototype for this study. A mechanical model was established considering the field loading conditions. Morison equations were adopted to calculate distributional hydrodynamic loads on spanning pipe caused by flood flow. Nonlinear soil constraint on pipe was considered using discrete nonlinear soil springs. An explicit solution of bending stiffness for pipe segment with casing was derived and applied to the numerical model. The von Mises yield criterion was used as failure criteria of the X70 pipe. Stress behavior of the pipe were analyzed by a rigorous finite element model established by the general-purpose Finite-Element package ABAQUS, with 3D pipe elements and pipe-soil interaction elements simulating pipe and soil constraints on pipe, respectively. Results show that, the pipe is safe at present, as the maximum von Mises stress in pipe with the field parameters is 185.57 MPa. The critical flow velocity of the pipe is 5.8 m/s with the present spanning length. The critical spanning length of the pipe is 467 m with the present flow velocity. The failure pipe sections locate at the connection point of the bare pipe and the pipe with casing or the supporting point of the bare pipe on riverbed.Keywords finite element analysis, river crossing, buried X70 pipe, flood load, pipe soil interaction Period. Polytech. Civil Eng.X. Liu, H. Zhang et al.

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Effects of steel properties on the local buckling response of high strength pipelines subjected to reverse faulting

Cited by 47 publications

References 15 publications

Local Buckling Behavior and Plastic Deformation Capacity of High-Strength Pipe at Strike-Slip Fault Crossing

Local Buckling Behavior and Plastic Deformation Capacity of High-Strength Pipe at Strike-Slip Fault Crossing

Stress and Deformation Analysis of Buried Gas Pipelines Subjected to Buoyancy in Liquefaction Zones

Numerical Analysis and Strength Evaluation of an Exposed River Crossing Pipeline with Casing Under Flood Load

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