RU2180302C2 - Above-deck marine structure - Google Patents

Abstract

FIELD: shipbuilding; designing bulwark in area of adapter knee of ship's superstructure. SUBSTANCE: above-deck marine structure has adapter knee of superstructure, sheer strake and bulwark which includes plate, rails and buttresses secured to deck stringer. Connected bulwark is shifted from sheer strake to longitudinal axis of ship at overlap and clearance relative to plane of adapter knees of superstructures. Plane of adapter knees of superstructures and plate of bulwark are fastened by strainers, at least two strainers, at overlapping section. It is preferable to make strainers in form of metal plates. Plates located vertically in clearance between adapter knees of superstructures and bulwark and their vertical edges are rigidly secured to planes of adapter knees if superstructures and plate of bulwark. EFFECT: avoidance of cracks at ends of bulwark; facilitated manufacture and assemble.

Description

 The invention relates to the field of shipbuilding, namely to the design of the hull, and can find application on ships of an unlimited and limited navigation area with a wide opening deck in the deck of the ship structure.

 There is a known ship deck structure including a transitional anchor of the superstructure, deck deck, bulwark containing a tailgate, a bulwark sheet, a counterfort (stand), a movable joint in bulwark racks intended to be connected to the transition arm of the superstructure (see N.V. Barabanov. marine vessels. - L .: Shipbuilding, 1993, Fig. 156, p. 195).

 The disadvantages of this design include the complexity and complexity of manufacturing a large number of movable joints.

 There is also a ship deck structure, including transitional knits of superstructures, shirstrek and a bulwark containing a sheet, planir and buttresses fastened with a deck stringer (see N.L. Sivers. Calculation and design of ship superstructures. - L .: Shipbuilding, 1966, rice 144, p. 255).

 The disadvantage of this design is that cracks appear in the extreme structural elements of the bulwark due to insufficient structural strength.

 The task to which the claimed solution is directed is expressed in increasing the overall and local strength due to the inclusion of bulwarks in the total longitudinal bending of the vessel along with longitudinal coamings and preventing the formation of points with a maximum concentration of tension due to their transfer to a lower level of tension.

 The technical result achieved in solving the problem is expressed in eliminating the appearance of cracks at the ends of the bulwark and simplifying the manufacturing and assembly technology of the bulwark.

 The problem is solved in that the above-deck ship structure, including transitional knits of superstructures, shirstrek and bulwark containing a sheet, planhir and buttresses fastened with a deck stringer, differs in that the attached bulwark is shifted from the shirshtre to the longitudinal axis of the vessel with an overlap and clearance relative to the plane transitional knits of the superstructures, while in the overlap area, the plane of the transitional knits of the superstructures and the bulwark sheet are fastened with ties, not less than two, preferably made in the form of metal their plates placed vertically in the gap between the transitional knits of the superstructures and the bulwark, and rigidly fastened by their vertical edges to the planes of the transition knits of the superstructures and the bulwark.

 A comparison of the essential features of the distinguishing part of the claims of the claimed solution with the essential features of the prototype indicates the conformity of the claimed solution to the criterion of "novelty."

 The features of the characterizing part of the claims solve the following functional tasks.

 The sign "... the attached bulwark is shifted from the shirtrack to the longitudinal axis of the vessel ..." allows, along with continuous coaming, to play the role of reliable longitudinal connection in ensuring the overall strength of the hull and at the same time fulfill its functional purpose; also, the shift of the bulwark from the side makes it possible to create a barrier for the unhindered propagation of cracks arising in the upper edges of the bulwark.

 The sign "... with an overlap and a gap relative to the plane of the transition knits of the superstructures ..." allows to increase the area of the calculated cross-section of the equivalent beam in the areas where the bulwark structure is connected to the superstructures, tank and jute, and to avoid cracks in the end sections of the bulwark.

 Sign "... In the overlap area, the plane of the transitional knits of the superstructures and the bulwark sheet are fastened with ties, not less than two, preferably made in the form of metal plates placed vertically in the gap between the transitional knits of the superstructures and the bulwark, and rigidly fastened with their vertical edges to the transition planes knaps of superstructures and bulwark sheet "allows to form a three-dimensional structure from a bulwark section extending beyond the overlap area with a transitional knyszt of the superstructure in order to better engage bulwark in a total longitudinal bend, as well as to ensure the flow of water. Ties will be more stable in the form of thick and small plates: when compressed under the action of loads from the sea and cargo and with the participation of the bulwark structure in the general longitudinal bend, they will allow the structure to move freely in the longitudinal direction. Screeds will be more malleable to the action of shear forces from the total longitudinal bend when they are vertically positioned.

 Figure 1 shows the claimed above-deck ship structure.

 Figure 2 shows a cross section of the screed (top view).

 The on-deck ship structure consists of sheets (bulwarks) 1, buttresses 2, rails 3, shirstreka 4, deck stringer 5, couplers 6, transitional knits of the superstructure 7. Figure 2 shows a one-sided T-seam T1.

 The whole structure is assembled in the form of a separate section or several, end and middle, if the vessel has a long length. To do this, the assemblies and parts are made: welded sheets 1, buttresses 2, rail 3. Then, welded sheets (bulwarks) 1 are fixed on the assembly stand, mark the places of installation of the buttresses 2 moved from shirstrek 4 to the longitudinal axis of the vessel, rail 3, set according to the marking and fix the buttresses 2 and planshire 3 on the tacks, check and pass the quality control for welding, and then weld the entire structure in the form of a section. During the stacking assembly, the sections are mounted on the deck stringer 5, the edges are unfastened and the edges of the welded sheets (bulwarks) 1 and counter-ties 2 are welded. The finished structure (bulwark) is welded, consisting of welded sheets (bulwark) 1, buttresses 2, rails 3, to deck stringer 5 with measures to prevent welding deformations. Welding of the bulwark structure is carried out with the deck extended, i.e. the hull must be in a state of inflection. Install screed 6 at the end sections of the bulwark design. Welding is done with a one-sided T-seam (see Fig. 2) with a transitional knob of the superstructure 7 and an end section of the bulwark structure.

Claims (1)

 An on-deck ship structure including transitional knits of superstructures, a shirstrek and a bulwark containing a sheet, planhir and buttresses fastened with a deck stringer, characterized in that the attached bulwark is shifted from the shirshtre to the longitudinal axis of the vessel with an overlap and a gap relative to the plane of the transition knives of the superstructures, in the overlap area, the plane of the transition knits of the superstructures and the bulwark sheet are fastened with couplers of at least two, preferably made in the form of metal plates placed vertically gap between the transition brackets superstructures and bulwarks, and fixedly fastened by their vertical edges to the planes of transition brackets superstructures and sheet bulwarks.

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