Failure mode analysis of X80 buried steel pipeline under oblique-reverse fault

Ma, Chuan; Huang, Runkang; Huang, Sining; Yang, Wendong

doi:10.1016/j.soildyn.2019.105723

Cited by 33 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, it was concluded that cohesive soils, softer ground conditions, smaller diameter to thickness ratio, smaller pipe internal pressure and X80 steel material (compared with X65) result in a better deformation capacity of the buried pipeline. Similar FE models have been proposed and employed to describe mechanical behavior of steel pipelines crossing strike-slip faults taking boundary conditions into consideration [ 7 ], and mechanical behavior of steel pipelines crossing reverse faults [ 8 , 9 , 10 ] and oblique reverse faults [ 11 ]. In addition to the M-C model, the Drucker–Prager (D-P) model was, also, used to analyze mechanical response of steel pipe subjected to strike-slip fault movement with emphasis on the effects of fault modelling [ 12 ] and mechanical behavior of steel pipe under reverse fault displacement [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Polyethylene Pipes under Strike-Slip Fault Movements

Qiao

Fan

et al. 2022

Polymers

View full text Add to dashboard Cite

The present paper addresses the mechanical behaviors and failure mechanisms of buried polyethylene (PE) pipes crossing active strike slip tectonic faults based on numerical simulation of the nonlinear response of the soil-pipeline system. The developed finite element (FE) model is first verified through comparing the simulation results with those from large-scale tests and good agreement between simulation and experimental measurements is obtained. The FE model is then applied to investigate the effects of fault crossing angle, pipe and soil properties on the mechanical behavior of PE pipe. The results indicate that the PE pipe crossing negative fault angles is primarily subjected to compression and bending, thus exhibits the phenomenon of buckling. With the increase of crossing angle, there is an increase of the axial strain and the maximum Mises stress in the buckled cross section, and a decrease of the distance between the buckling position and the fault plane. While for positive crossing angles, the PE pipe is mainly subjected to tension and relatively small bending. Increasing the crossing angle causes an increase in bending strain and a decrease in the axial strain. In addition, when the fault moving speed is slower, the axial strain and bending strain are larger, whereas the maximum Mises stress in the buckled cross section and the distance between the buckled position and the fault plane are reduced. Furthermore, the most severe deformation of the pipe is observed when it is buried in the sandy soil, followed by cohesive soil and loess soil.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Polyethylene Pipes under Strike-Slip Fault Movements

Qiao

Fan

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Buried pipeline usually covers a wide range of regions, and the vicinity along the pipeline will inevitably suffer from various geological hazards. Such as fault displacement induced by earthquakes poses a great threat to the safe operation of buried pipelines, especially for the oblique-reverse fault (composed fault) [1][2][3]. Line D of Central Asia Natural Gas Pipeline (Line D) is the typical project where the pipeline crosses the oblique-reverse fault [4].…”

Section: Introductionmentioning

confidence: 99%

“…Melissianos et al [18] carried out an extensive parametric study on the pipeline crossing reverse fault and offered the first comprehensive attempt to quantify the qualitative criterion that deeply buried pipes with high D/t ratio tend to buckle locally, while shallowly buried pipes with low D/t ratio tend to buckle globally. Based on the shell element-nonlinear contact coupling model and design criteria, Cheng et al [2,19] gave the prediction formula of the maximum tensile and compressive strain of buried X80 steel pipe under the oblique-reverse fault displacement and proposed the FE model of X80 steel pipe crossing oblique-reverse fault. Then, the strain evolution of the pipeline under three failure modes (local buckling, tensile rupture, and section ovalization) was obtained, and the failure mode sequence was discussed.…”

Section: Introductionmentioning

confidence: 99%

Local buckling behavior of buried pipeline under seismic oblique-reverse fault displacement

Huang²,

Chen

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

Seismic fault displacement is the main factor leading to the local buckling failure of the buried pipeline, especially crossing the oblique-reverse fault. The 3-D displacement of the oblique-reverse fault makes the local buckling behavior of the buried pipeline more complex. It may be inaccurate to evaluate the local buckling location and degree using the pipe local buckling results under the single fault displacement, affecting the monitoring and safety assessment of the pipeline. In this paper, to determine the pipe local buckling behavior (potential local buckling locations, developing process) under the oblique-reverse fault displacement, a shell and solid element nonlinear contact coupling model of the pipeline crossing oblique-reverse fault is established using ABAQUS. The results reveal two potential local buckling areas and three stages of the local buckling developing process under the oblique-reverse fault displacement. Subsequently, the potential local buckling locations and three stages in the local buckling under different operating conditions is obtained. It proves that using the results of pipe local buckling under single fault to evaluate the pipeline local buckling under composed fault is not safe enough. Consequently, local buckling behavior of the pipeline crossing oblique-reverse fault provides a reference for the preliminary pipe design, detection, and evaluation.

show abstract

“…Using a contact algorithm that takes into account surface friction, the outer surface of the pipe and the surrounding soil are adopted in a tangential behavior and a suitable friction coefficient is defined as 0.3. Since the contact surfaces about soil to soil are continuously changing when the soil blocks move, according to Cheng, so in this study, the friction coefficient of soil‐soil is defined as 0.5.…”

mentioning

confidence: 99%

“…Vazouras also obtained a similar conclusion. So, Cheng set it as 0.6 for pipe‐soil behavior and Vazouras, Zhang, and Banushi assumed it equal to 0.3. Consequently, the friction coefficient is 0.3 in this model.…”

mentioning

confidence: 99%

Local buckling evolution mechanism of a buried steel pipe under fault movements

Zhang

Chen

Zhang

2019

Energy Science & Engineering

View full text Add to dashboard Cite

Pipe is the main transportation way for oil and natural gas. Fault movement mainly caused by earthquake, which will induce pipe bending, tension and compression. Then oil or gas leakage appear. Based on the moving mechanism of strike‐slip fault and reverse fault, a numerical simulation model was employed to study the buckling evolution mechanism of the buried steel pipe under fault movements. The evolution processes of buried pipe under the fault moving action were analyzed, and the effects of pipe internal pressure, fault displacement, and pipe diameter‐to‐thickness ratio on the pipe buckling were discussed. The results demonstrate that there are three mechanical evolution stages on the pipe in the process of fault movement. High stress appears on the bending regions of pipe wall, and axial strain always fluctuates along the axial length. When the fault displacement is large, pipe collapsing and wrinkling patterns occur, which can be reflected by a sharp fluctuation of axial strain. The high‐pressure pipe under the action of reverse fault is prone to failure than the low‐pressure pipe. The pipe with a large D/t in the hanging wall is easier to be buckled than that with a small D/t in the footwall. The results obtained can be used for the design and evaluation of buried oil and gas pipes.

show abstract

Failure mode analysis of X80 buried steel pipeline under oblique-reverse fault

Cited by 33 publications

References 23 publications

Mechanical Behavior of Polyethylene Pipes under Strike-Slip Fault Movements

Mechanical Behavior of Polyethylene Pipes under Strike-Slip Fault Movements

Local buckling behavior of buried pipeline under seismic oblique-reverse fault displacement

Local buckling evolution mechanism of a buried steel pipe under fault movements

Contact Info

Product

Resources

About