Influence of diagonal framing members of side grillage on its weight characteristics

Abstract

One of the problems of strength and rigidity of the hulls of ships with large deck openings is related to hull torsion in waves. The article considers the possibility of introducing diagonal frame elements into the side grillage, which would significantly increase the resistance of the grillage to shear deformations under the torsion of the ship's hull. Introduction of additional members, on the one hand, will lead to the weight increase of the grillage. On the other hand, such introduction will also lead to a decrease in the weight of the main framing due to the decrease in its design span, as well as the weight of the traditional frame grillage due to the redistribution of pressure from the sea to the diagonal elements. As a result, there is a slight increase in the weight of the grillage; at the same time its local strength is ensured, with an obvious increase in the resistance of the grillage to the shear occuring during the torsion of the ship's hull.