TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Numerical simulation of the positioning process of complex floating objects when performing offshore operations



Full text article ( in russian)

Year

 
2019

Issue

 
20192

Volume

 
2

Pages

 
239-247

Caption

 
Numerical simulation of the positioning process of complex floating objects when performing offshore operations

Authors

 
Naumenko A., Blagovidova I., Pyanov A., Ivanova O.

Keywords

 
simulation, positioning system, load, mooring lines

DOI

 
10.24937/2542-2324-2019-2-S-I-239-247

Summary

 
The purpose of this work is to numerically simulate all the stages of marine operations involved in loading and erection of the Crimean bridge spans from the floating system to stationary supports, as well as to develop a positioning system enabling safe completion of these technical operations under external loads. The solution to this problem is based on numerical simulation of marine operations in Anchored Structures software package. The study determines the parameters for positioning systems enabling required positioning accuracy of floating system supports during technological operations. The calculation yielded optimal parameters for positioning system winches and mooring ropes to be installed onto transportation pontoons; it also ensured protection of these pontoons by fenders and yielded surge magnitudes and parameters for the whole floating system and its pontoons in waves. This analysis yielded optimal parameters for the positioning system, thus ensuring successful float-over of the Crimean bridge spans onto their permanent supports. The parameters of winches and ropes yielded by the numerical simulation ensured required accuracy of positioning and successful installation of the spans. Simulation results obtained in Anchored Structures software package were quite close to actual physical parameters.

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