International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us

IJSTR >> Volume 3- Issue 3, March 2014 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Structural Analysis Of Dual Submarine Pipelines During Laying

[Full Text]



Dr. Hakim Saeed Al-Kurayshi



Index Terms: Bending moments, Dual, Equivalent ,Horizontal Accumulation, Stresses, Tension.



Abstract: Analysis of single pipeline project had been studied by many authors in last decades. In this study two(dual) pipelines are taken into consideration to transport oil separately. They are taken to be laid one beside the other or they may be one over the other. The other condition which studied was taking an equivalent pipe simulating the two pipes. An example was taken to study this analysis. A software called OFFPIPE was used to find out deflections, bending moments and bending stresses. The results show that the useful method in laying two pipelines is by installing them one beside the other (horizontal accumulation) because the obtained results of moments of this method for many values of tensions were one third of the results of other methods.



[1] Lenci S. and Callegari, M. "Simple analytical models for the J-lay problem", Acta Mechanica 178,23-29 (2005).

[2] Dixon, D., Rutledge, D., "Stiffened catenary calculations in pipeline laying problem", ASME Journal of Engineering for Industry, February 1968, Vol.90 ,No.1, pp-153-160.

[3] Dareing ,D.W. and Neathery R.F.,"Marine pipeline analysis based on Newton,s method with an arctic application",Journal of engineering for industry.Trans.ASME, Nov.1970.

[4] Clauss G.F., Weed H. and Saroukh A.,"Nonlinear static and dynamic analysis of marine pipelines during laying.", Schiffstechnic Bd.38-1991/ship technology research Vol.38-1991.

[5] Rienstra, S.W.," Analytical approximations for offshore pipelaying problems", Proceedings ICIAM 87, Paris-La Villette, June 29-July 3 1987.

[6] Chettiar C.G.P. and Sundaravadivelu R.,"Analysis of submarine pipelines.", Journal of structural engineering, Vol.7, No.4 , Jan. 1980 ,pp.167-180.

[7] Larsen C.M. and Kavlie D.," Nonlinear analysis of oil pipelines by potential minimization.", Computers and structures Vol.8 , 1978 ,pp.733-743.

[8] Wilhoit J.C. and Marwin J.E.,"Pipe stresses induced in laying offshore pipelines.",Journal of engineering for industry.Trans.ASME, Oct. 24,1966.

[9] Bernitsas,M.M. and Valhopoulos,N.,"Three-dimensional nonlinear statics of pipeelaying using condensation in an incremental finite element algorithm", Computers&Structures ,Vol.35, No.3,pp. 195-214,1990.

[10] Lawinscky D.M. Henrique M.A. and Jacob B.P.,"Numerical model for the simulation of the pipeline-laybarge interaction in pipelaying procedures.", International journal of modeling and simulation for the petroleum industry, Vol.3, No.1, June 2009.

[11] Wang, Li.,Yuan, F., Guo, Z. and Li, L.L.," Numerical analysis of pipeline in J-lay problem", Journal of Zhejiang University-Science A(Applied Physics &Engineering) 2010 11(11) ,pp-908-920.

[12] Malahy, R.C.Jr.,"OFFPIPE - Offshore pipeline analysis system",Version 2.04X, Copyrightę 1995.