Global buckling of pipelines in the vertical plane with a soft seabed

Wang, Lizhong; Shi, Ruowei; Feng, Yuanyue; Guo, Zhen; Yu, Lushan

doi:10.1016/j.apor.2011.01.002

Cited by 45 publications

(12 citation statements)

References 16 publications

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“…The two equations are similar to those presented by Taylor. After that, Wang et al (2011aWang et al ( , 2011b, Shi et al (2013), Liu et al (2013Liu et al ( , 2014, Zhao and Feng (2015) also studied this problem. But they all did not provide an explicit and universal formula to express the effects of initial imperfection shape, wave length, and amplitude on the critical axial force of pipeline.…”

Section: Introductionmentioning

confidence: 96%

Prediction of the upheaval buckling critical force for imperfect submarine pipelines

Xin-hu

Duan

2015

Ocean Engineering

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Section: Introductionmentioning

confidence: 96%

Prediction of the upheaval buckling critical force for imperfect submarine pipelines

Xin-hu

Duan

2015

Ocean Engineering

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“…They conducted the analysis using both transient and steady-state conditions and, then, highlighted the vulnerability of subsea pipelines to buckle the interaction, particularly in deep waters. Wang et al [13] studied static and dynamic responses of upheaval buckling of unburied subsea pipelines in both 2D and 3D. The results showed that for bifurcation of upheaval buckling, the predicted buckling temperatures of those models were all acceptable with an error of 5%.…”

Section: Introductionmentioning

confidence: 99%

“…The analytical results were based on a at seabed, theory of moderately large de ections, and elastic pipe behavior. Wang et al [9] extended an analytical solution for the vertical pipeline buckling on a rigid seabed to a soft seabed and, then, illustrated and analyzed the e ects of soil resistance on pipeline stability, buckling mode, and amplitude. They concluded that if soft soil is detected in a subsea pipeline route, downward buckling may occur, instead of the conventional upheaval buckling.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of effective parameters on lateral buckling of subsea pipelines on a rigid seabed

2017

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Abstract. This study investigates the lateral buckling of pipelines on a rigid seabed under temperature and internal pressure, regardless of the e ects of waves and currents. The analytical results in some cases are compared with the numerical results obtained from ABAQUS software. Then, the in uence of e ective parameters (such as internal pressure, friction, initial imperfection, diameter and thickness of the pipe, and the pipe material) on the lateral buckling of pipelines on a rigid seabed is evaluated in order to determine the level of importance. The most important results indicate a reduced possibility of lateral buckling with an increased coe cient of friction between the pipe and seabed, reduction of the internal pressure, and reduction of the amplitude of the initial imperfection in the pipeline. For example, compared to the models with coe cients of friction equal to 0.5 and 0.3, safety temperatures in the model with a coe cient of friction equal to 0.7 have increased by 13.6% and 50%. Compared to the models with initial imperfections equal to 0.3, 0.5, and 0.7 m, safety temperatures in the model with an initial imperfection of 0.1 m have increased by 4.49%, 15.32%, and 40.65%.

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“…Consequently, the integrity of pipelines within the buckle is improved. Lateral and upheaval buckling have been studied by previous researchers in the theoretical framework by modelling the pipeline as a beam resting on a rigid seabed [10][11][12][13][14][15][16][17] or on a soft seabed [18][19][20]. Nonlinear localised lateral buckling of straight pipelines was investigated analytically by Zhu et al [21] and Wang [22] without the assumption of lateral deformation.…”

Section: Introductionmentioning

confidence: 99%

Analytical study of lateral thermal buckling for subsea pipelines with sleeper

Wang

Tang

Heijden

2018

Thin-Walled Structures

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Unburied subsea pipelines operating under high-temperature and high-pressure conditions tend to relieve their axial compressive force by forming lateral buckles. Uncontrolled lateral buckling may lead to pipeline failure. In order to control lateral buckling, a sleeper is often employed as a buckle-initiation technique. In this study, analytical solutions of lateral buckling for unburied subsea pipelines with sleeper are derived. An energy analysis is employed to investigate the stability of the buckled pipeline. The influence of sleeper height and sleeper friction on pipeline buckled configurations and typical lateral buckling behaviour is illustrated and analysed. The results are shown to be in very good agreement with experimental data in the literature. We also discuss the effect of imperfections and conduct an error analysis of one of the main assumptions of the proposed analytical method. Our results show that increasing the height of the sleeper or decreasing the friction between pipeline and sleeper can all be used to decrease the minimum critical temperature difference. However, only the sleeper height is effective in substantially reducing the maximum compressive stress.

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Global buckling of pipelines in the vertical plane with a soft seabed

Cited by 45 publications

References 16 publications

Prediction of the upheaval buckling critical force for imperfect submarine pipelines

Prediction of the upheaval buckling critical force for imperfect submarine pipelines

Evaluation of effective parameters on lateral buckling of subsea pipelines on a rigid seabed

Analytical study of lateral thermal buckling for subsea pipelines with sleeper

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