Optimum design of submarine pipeline

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:398001

Gokkus, U; Akyarli, A ^[1]

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1. Dokuz Eylul Univ., Izmir (Turkey)

This study aims to ensure the lateral and vertical stability of submarine pipelines (elevated, surface and buried pipelines) under the functional and environmental loads and yield an optimum dimensions of artificial weights covering pipes laid on the alternative routes. Optimization process depending on the iterative procedure requires an analysis considering each of extreme conditions on the internal and external pipe flow. The stabilization of the pipeline on sea-bottom exposed to wind-generated wave and uniform-steady current action is achieved by utilized artificial concrete weights and sliding resistance between pipe and soil. Wave parameters are calculated by the Airy`s Linear Theory and modified by considering the effect of sea bed such as shoaling, refraction and breaking. Then the computation of hydrodynamic forces are based on the two-term Morison equation and the Froude-Krylov theory. The required force coefficients are taken in accordance with the experimental outputs of the Det Norske Veritas. Additionally, the vortex shedding induced dynamical analysis and geotechnical studies are taken into consideration. These analytical processes are carried out for the developed computer program, SUPLID, and examined for an example.

• OSTI ID: 398001
• Report Number(s): CONF-940409--; ISBN 1-880653-10-9
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPUTER-AIDED DESIGN
MATHEMATICAL MODELS
OFFSHORE SITES
PIPELINES
RESPONSE FUNCTIONS
SITE SELECTION
SOIL-STRUCTURE INTERACTIONS
STABILIZATION
WAVE FORCES