TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

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


Articles of The Transactions of KSRC








Dry dock bottom loads of Zvezda shipbuilding complex during construction of Lider icebreaker



Full text article ( in russian)

Year

 
2020

Issue

 
20201

Volume

 
1

Pages

 
28-32

Caption

 
Dry dock bottom loads of Zvezda shipbuilding complex during construction of Lider icebreaker

Authors

 
Antonenko S.

Keywords

 
dry dock, keel block responses, keel line bending, mechanical characteristics of keel block cappings

DOI

 
10.24937/2542-2324-2020-1-S-I-28-32

Summary

 
Object and purpose of research. Justification of design loads on the bottom of Zvezda shipbuilding complex dry dock with respect to the target vessel, advanced nuclear icebreaker Lider
Subject matter and methods.The loads on dock supports were determined as per the method of five moments taking into account the icebreaker’s main data.
Main results. Structural responses of dock supports were calculated for the scenario of icebreaker installation to a repair dock for different keel block stiffnesses, with and without initial bending of the keel line. Then, these results were compared with design calculations. The paper also discusses the difference in load distribution for two scenarios (ship construction and ship repair), highlighting the importance of reliable data on the mechanical characteristics of dock support cappings, as well as on scope and shape of the ship’s keel line bending.
Conclusion. This paper gives recommendations on load mitigation for dry dock supports through optimization of their strength and stiffness parameters, as well as demonstrates that hull shape imperfections may seriously affect the distribution of loads on dock supports.

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