Structural Analysis Of Dual Submarine Pipelines During Laying

Abstract Analysis of single pipeline project had been studied by many authors in last decades. In this study twodual 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.