Optimization of buoyancy of an articulated stinger on submerged pipelines laid with a barge

Zhu, Daoyi; Cheung, Y.K.

doi:10.1016/s0029-8018(96)00012-1

Cited by 18 publications

(8 citation statements)

References 1 publication

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“…In the early time, the singular perturbation method was applied to solve the static equilibrium governing differential equation and calculate the configurations and the stresses of S-lay and J-lay pipelines (Plunkett 1967;Dixon and Rutledge 1968;Palmer et al 1975;Zhu and Cheung 1997;Guarracino and Mallardo 1999), which can offer a quick solution to the pipelay problem, but the seabed was assumed to be rigid, horizontal and flat, and the analysis was limited to the static bi-dimensional profile. Schmidt (1977), and Lenci and Callegari (2005) carried out the static analyses of S-lay and J-lay pipelines considering the seabed to be a continuous, linearly elastic foundation.…”

Section: Introductionmentioning

confidence: 99%

Influences of pipe–soil interaction on dynamic behaviour of deepwater S-lay pipeline under random sea states

Gong

2016

Ships and Offshore Structures

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The pipe-soil interactions have an important influence on the dynamic behaviour of offshore pipelines in the touchdown zone (TDZ) during deepwater S-lay. This paper mainly aims to reveal the dynamic behaviour of the pipeline in the TDZ, and its actual dynamic lay effects. A full finite element model for deepwater S-lay systems is primarily developed to simulate the dynamic responses of offshore pipeline from the pipelay vessel via the stinger to the seabed, in which pipelay vessel motions, pipeline hydrodynamics, clashing contacts between the pipeline and the stinger rollers and pipe-seabed interactions are considered particularly. The numerical analysis of an illustrative case for a gas export pipeline being installed to a water depth of 1500 m in the South China Sea is carried out in the time domain using the commercial computer code OrcaFlex. The influences of seabed soil models, soil characteristics, submerged self-weight of the pipe, surface waves, and pipelay vessel motions on the dynamic behaviour of the pipeline in the TDZ have been quantitatively studied in view of non-linear hysteretic soil model. The results indicate that the soil characteristics and the pipelay vessel motions induced by the surface wave have great influence on the bending moment and embedment of the pipeline, and the seabed resistance.

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Section: Introductionmentioning

confidence: 99%

Influences of pipe–soil interaction on dynamic behaviour of deepwater S-lay pipeline under random sea states

Gong

2016

Ships and Offshore Structures

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“…The curvature ratio and bending stress of flexible pipe can be controlled by curvature wheel from pipe roller (Zhu et al, 1997). In the normal case, the design radius of curvature wheel is bigger than 1.1 times of bending radius of pipe is shown in Eq.…”

Section: Design and Assembly On Flex-lay Systemmentioning

confidence: 99%

An apparatus design and testing of a flexible pipe-laying in submarine context

Zhang

Wang

2015

Ocean Engineering

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“…In the shallow water case, the stinger could be simplified as a rigid structure [3][4][5][6][7][8][9], With the water depth increasing, the stinger must be designed longer to support the heavy weight of the pipe line, which causes the stiffness to become an important factor that influences the dynamic interaction of the pipeline and rollers. In previous studies [10,11], the stinger was regarded as a rigid curve, but rollers were considered to be springs.…”

Section: Introductionmentioning

confidence: 99%

The Model Test of Deep Water S-Lay Stinger Using Dynamical Substructure Method

Zhang

Yue

Zhang

2015

Journal of Offshore Mechanics and Arctic Engineering

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Deep water pipeline installations by S-lay present many challenges, especially in the overbend section. The S-lay requires a long curved and stiff stinger to support the pipeline weight. The interaction between the overbend pipe and stinger is complicated such that the numerical structure analysis could not sufficiently predict the mechanical behavior of the installing process. A dynamic substructure model test method with 1:20 length scale for 2000 m water depth is addressed in this paper, where the large scale model structure can be tested to simulate the vessel movements during installation. The roller forces influenced by the stinger stiffness and vessel movements are discussed based on the test platform.

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Optimization of buoyancy of an articulated stinger on submerged pipelines laid with a barge

Cited by 18 publications

References 1 publication

Influences of pipe–soil interaction on dynamic behaviour of deepwater S-lay pipeline under random sea states

Influences of pipe–soil interaction on dynamic behaviour of deepwater S-lay pipeline under random sea states

An apparatus design and testing of a flexible pipe-laying in submarine context

The Model Test of Deep Water S-Lay Stinger Using Dynamical Substructure Method

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