Design of Submarine Pipelines Against Upheaval Buckling

Palmer, Andrew; Ellinas, C.P.; Richards, D.M.; Guijt, J.

doi:10.4043/6335-ms

Cited by 57 publications

(40 citation statements)

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“…A typical procedure in the engineering practice to calculate vertical driving forces during upheaval buckling was established by Palmer et al [6]. This procedure is considered semi-empirical and is appropriate for projects in the stage of FEED, FrontEnd-Engineering-Design (Thusyanthan et al [28]).…”

Section: Loading Assessmentmentioning

confidence: 99%

“…This procedure is considered semi-empirical and is appropriate for projects in the stage of FEED, FrontEnd-Engineering-Design (Thusyanthan et al [28]). Analytical expressions presented in [6] followed the beam-column theory and the downward force per unit length (w D ) to keep the pipeline in equilibrium has to satisfy the equation:…”

Section: Loading Assessmentmentioning

confidence: 99%

“…(8), the dimensionless maximum load is defined by wD = (w D EI)/((ı)p 2 ), and the dimensionless imperfection length is defined by l = L p/(EI) 2 . It was generated a universal curve of wD varying with l by gathering numerical results by [6]. The curve allows establishing the relationship between the two dimensionless parameters and three different conditions were found, which were mathematically defined as: …”

Section: Loading Assessmentmentioning

confidence: 99%

See 2 more Smart Citations

Reliability functions for buried submarine pipelines in clay subjected to upheaval buckling

Valle-Molina

Alamilla

Sánchez-Moreno

et al. 2014

Applied Ocean Research

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Section: Loading Assessmentmentioning

confidence: 99%

Section: Loading Assessmentmentioning

confidence: 99%

Section: Loading Assessmentmentioning

confidence: 99%

See 1 more Smart Citation

Reliability functions for buried submarine pipelines in clay subjected to upheaval buckling

Valle-Molina

Alamilla

Sánchez-Moreno

et al. 2014

Applied Ocean Research

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“…The final configuration is shown on Figure 5. It is interesting to observe that this configuration is very similar to those observed on buried straight pipelines under an initial imperfection and constrained both laterally and axially by elastic foundation [6][7][8]. A direct method was used to solve Problem (P 2 ) in both Experiments 4 and 5, which in this case reduce to a system of linear equations.…”

Section: Solution Algorithmmentioning

confidence: 99%

Finite‐element models for flexible unidimensional structures with unilateral constraints

Santos

Guerreiro

Loula

2007

Commun. Numer. Meth. Engng.

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SUMMARYWe present computational models for unidimensional flexible structures subjected to equality or inequality constraints. The first model, in small displacements and small deformations regime, is applied to the simulation of the behaviour of straight structures completely or partially confined and under the action of instabilizing forces coming, for example, from thermal variations. The second model, in finite displacements and small deformations regime, may have large applications in the analyses of risers and umbilicals used in oil production fields. It is derived aggregating elastic supports and unilateral constraints to the model presented by Glowinski and Fortin (Augmented Lagrangian Methods: Application to the Numerical Solution of Boudary-Value Problems, vol. 15. 1991) to the analyses of inextensible flexible unidimensional structures. This model is formulated using an Augmented Lagrangian Method and is solved by an Uzawatype algorithm with projection.

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“…The results showed a reduction in buckling temperature with the increased amplitude of the initial imperfection. Palmer et al [7] demonstrated through a small-scale test that the constraint of expansion of a pipeline due to the increasing internal pressure could induce vertical buckling. Peek and Yun [8] presented analytical expressions for triggering such lateral buckles by applying buoyancy to the pipeline.…”

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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Design of Submarine Pipelines Against Upheaval Buckling

Cited by 57 publications

References 0 publications

Reliability functions for buried submarine pipelines in clay subjected to upheaval buckling

Reliability functions for buried submarine pipelines in clay subjected to upheaval buckling

Finite‐element models for flexible unidimensional structures with unilateral constraints

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

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