考虑间隙影响的海洋非粘结柔性管道内压失效预测分析研究
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摘要
对于海洋油气开发工程中输送油气的非粘结柔性管道,其内部压力是管道失效的重要原因之一。对常用的非粘结柔性管道内压失效的理论预测模型进行了讨论,并与三维数值模型所得到的结果比较。为了考虑加工间隙的影响,提出了将弹性力学理论与"填充因子"等效方法相结合的柔性管道结构抗内压能力的分析方法。计算结果表明,柔性管道抗压层间的加工间隙会显著降低结构的抗压能力。理论分析与数值模拟结果吻合良好,在加工间隙不超过0.2 mm的情况下,相对偏差不超过3.38%。该理论预测方法对非粘结柔性管道结构的设计提供了有益的参考。
Internal pressure of unbounded flexible pipes applied in transportation of marine oil and gas is one of the most important reasons of structural failure. Common theoretical prediction models for the burst failure of un-bonded flexible pipe are discussed in this paper. The results are compared with that from three-dimensional numerical simulation. A theoretical method based on the combination of elastic mechanics and "filling factor" equivalence is proposed to investigate the influence of clearance due to manufacturing error. It is shown that anti-pressure capacity of the structure may reduce significantly due to the clearance between pressure armors in the un-bounded flexible pipe. A comparison of the presented method with the numerical simulation verifies the feasibility of this method, which provides a useful reference for the design of the un-bonded flexible pipes.
Internal pressure of unbounded flexible pipes applied in transportation of marine oil and gas is one of the most important reasons of structural failure. Common theoretical prediction models for the burst failure of un-bonded flexible pipe are discussed in this paper. The results are compared with that from three-dimensional numerical simulation. A theoretical method based on the combination of elastic mechanics and "filling factor" equivalence is proposed to investigate the influence of clearance due to manufacturing error. It is shown that anti-pressure capacity of the structure may reduce significantly due to the clearance between pressure armors in the un-bounded flexible pipe. A comparison of the presented method with the numerical simulation verifies the feasibility of this method, which provides a useful reference for the design of the un-bonded flexible pipes.
引文
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[8]NETO A G,MARTINS C D A,PESCE C P,MEIRELLES C O C.Burst prediction of flexible pipes.[C]//ASME 2010,Proceedings of the 29th International Conference on Ocean,Offshore and Arctic Engineering,2010:511-520.
[9]NETO A G,MARTINS C D A,PESCE C P,MEIRELLES C O C,MALTA E R.Prediction of burst in flexible pipes.Journal of Offshore Mechanics&Arctic Engineering,2013,35(1):011401.
[10]CUAMATZI-MELENDEZ R,CASTILLO-HERNANDEZ O,VAZQUEZ-HERNANDEZ A O,et al.Finite element modeling of burst failure in unbonded flexible risers[J].Engineering Structures,2015,87:58-69.
[11]TIMOSHENKO S P,GOODIER J N.Theory of Elasticity[M].McGraw-Hill International Book Company,Inc,1951.
[12]ANDREW C,PALMER,KING R A.Subsea pipeline engineering[M].Pennwell Publishing,2008.
[13]S?VIK S,YE N.Aspects of design and analysis of offshore pipelines and flexibles[R].Southwest Jiaotong University,2016.
[14]NETO A G,MARTINS C A.A comparative buckling study for the carcass layer of flexible pipes[C]//ASME 2009,Proceeding of the 28th International Conference on Offshore Mechanics and Arctic Engineering,2009:419-428.
[15]MARTINS C A,PESCE C P,ARANHA J A P.Structural behavior of flexible pipe carcass during launching[C]//ASME2003,Proceeding of the 22nd International Conference on Offshore Mechanics and Arctic Engineering.2003:537-546.
[2]PEREZ-BENITEZ J A,ALBERTERIS-CAMPOS M,CALDAS-MORGAN M,PADOVESE L R.Detection of the riser failure under applied static load[C]//V Pan American Conference for Non Destructive Testing(V PANNDT).Mexico;2011.
[3]COLQUHOUN R S,HILL R T,NIELSEN R.Design and materials considerations for high pressure flexible flowlines[J].Advances in Underwater Technology Ocean Science&Offshore Engineering,1990,24:145-178.
[4]NETO A G,MARTINS C D A.A comparative wet collapse buckling study for the carcass layer of flexible pipes[J].Journal of Offshore Mechanics&Arctic Engineering,2012,134(3):031701.
[5]FERET J J,BOURNAZEL C L.Calculation of stresses and slip in structural layers of unbonded flexible pipes[J].Journal of Offshore Mechanics&Arctic Engineering,1987,109(3):263.
[6]OLIVEIRA J G,GOTO Y,OKAMOTO T.Theoretical and methodological approaches to flexible pipe[C]//Offshore technology conference,OTC 5021,New York NY,1985:517.
[7]FERNANDO U S,TAN Z,SHELDRAKE T,et al.The stress analysis and residual stress evaluation of pressure armour layers in flexible pipes using 3D finite element models[C]//ASME 2004,Proceeding of the 23rd International Conference on Offshore Mechanics and Arctic Engineering.2004:3137-3140.
[8]NETO A G,MARTINS C D A,PESCE C P,MEIRELLES C O C.Burst prediction of flexible pipes.[C]//ASME 2010,Proceedings of the 29th International Conference on Ocean,Offshore and Arctic Engineering,2010:511-520.
[9]NETO A G,MARTINS C D A,PESCE C P,MEIRELLES C O C,MALTA E R.Prediction of burst in flexible pipes.Journal of Offshore Mechanics&Arctic Engineering,2013,35(1):011401.
[10]CUAMATZI-MELENDEZ R,CASTILLO-HERNANDEZ O,VAZQUEZ-HERNANDEZ A O,et al.Finite element modeling of burst failure in unbonded flexible risers[J].Engineering Structures,2015,87:58-69.
[11]TIMOSHENKO S P,GOODIER J N.Theory of Elasticity[M].McGraw-Hill International Book Company,Inc,1951.
[12]ANDREW C,PALMER,KING R A.Subsea pipeline engineering[M].Pennwell Publishing,2008.
[13]S?VIK S,YE N.Aspects of design and analysis of offshore pipelines and flexibles[R].Southwest Jiaotong University,2016.
[14]NETO A G,MARTINS C A.A comparative buckling study for the carcass layer of flexible pipes[C]//ASME 2009,Proceeding of the 28th International Conference on Offshore Mechanics and Arctic Engineering,2009:419-428.
[15]MARTINS C A,PESCE C P,ARANHA J A P.Structural behavior of flexible pipe carcass during launching[C]//ASME2003,Proceeding of the 22nd International Conference on Offshore Mechanics and Arctic Engineering.2003:537-546.