Bottom stool plate stiffener arrangement structure of bulk cargo ship

Abstract

The invention discloses a bottom stool plate stiffener arrangement structure of a bulk cargo ship. The bottom stool plate stiffener arrangement structure comprises a lower stool flat plate arranged at the bottom of a groove-shaped transverse bulkhead and a bottom stool plate arranged between an inner bottom plate and the lower stool flat plate. A vertical stiffener is arranged on the bottom stool plate; the upper end of the vertical stiffener is not provided with an upper end toggle plate; a horizontal longitudinal girder is arranged on the bottom stool plate; the horizontal longitudinal girder is located below the lower stool flat plate and is not connected to the lower stool flat plate, and the upper end of the vertical stiffener is connected to the horizontal longitudinal girder. The structure is simple and optimal, construction is easier, materials are saved, and the weight of the structure is reduced; the number of components is reduced, and the construction process is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to a bottom bench plate stiffener arrangement of a bulk carrier. BACKGROUND

[0002] The bottom bench of a bulk carrier is arranged at the bottom of a tank transverse bulkhead. Figure 1 and Figure 2 As shown in the prior art, the bottom bench of a bulk carrier comprises a lower bench plate 51 arranged below a tank transverse bulkhead 50, a bottom bench plate 52, and an inner bottom plate 53, the bottom bench plate 52 is two, and the two bottom bench plates are arranged at the front and rear of the lower bench plate respectively; the upper end of the bottom bench plate 52 is connected to the lower bench plate, and the lower end of the bottom bench plate is connected to the inner bottom plate; a discharge plate 54 is arranged on the tank transverse bulkhead 50; in order to improve the structural strength, a vertical stiffener 55 is arranged on the bottom bench plate, the upper end of the vertical stiffener is provided with an upper end elbow plate 56, and the lower end of the vertical stiffener 55 is provided with a lower end elbow plate 57, the upper end elbow plate is connected to the lower bench plate, and the lower end elbow plate is connected to the inner bottom plate. The upper end elbow plate 56 and the lower end elbow plate 57 are respectively provided with anti-buckling ribs 58 and 59.

[0003] The prior art has the following disadvantages: complex structure design, waste of materials, increase of structural weight and construction process. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a bottom bench plate stiffener arrangement of a bulk carrier.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] A bottom bench plate stiffener arrangement of a bulk carrier comprises a lower bench plate arranged at the bottom of a tank transverse bulkhead, and a bottom bench plate arranged between an inner bottom plate and the lower bench plate; a vertical stiffener is arranged on the bottom bench plate; the upper end of the vertical stiffener is not provided with an upper end elbow plate; a horizontal longitudinal girder is arranged on the bottom bench plate; the horizontal longitudinal girder is located below the lower bench plate, the horizontal longitudinal girder is not connected to the lower bench plate, and the upper end of the vertical stiffener is connected to the horizontal longitudinal girder.

[0007] Further, the bottom bench plate is two, and the two bottom bench plates are arranged at the front and rear of the lower bench plate respectively.

[0008] Further, the vertical stiffeners and the horizontal longitudinal girders are arranged on the two bottom bench plates.

[0009] Further, the vertical stiffeners are arranged on the inner side surfaces of the bottom bench plates; the vertical stiffeners on the two bottom bench plates are arranged oppositely.

[0010] Further, the bottom bench plates are distributed obliquely.

[0011] Further, the bottom of the vertical stiffener is fixedly connected to the inner bottom plate.

[0012] Furthermore, a lower bracket is provided at the lower end of the vertical stiffener, and the lower bracket is fixed to the inner bottom plate.

[0013] Furthermore, the lower end bracket is provided between the vertical stiffener and the inner bottom plate.

[0014] Furthermore, anti-buckling ribs are fixed on the lower end bracket.

[0015] Furthermore, a cargo unloading plate is provided on the corrugated transverse bulkhead, and the bottom of the cargo unloading plate is fixedly connected to the lower stool flat plate.

[0016] The beneficial effects of the present invention are as follows: The technical solution of the present invention adds an upper horizontal longitudinal girder to the upper portion of the bottom stool plate of a bulk carrier, near the lower stool plate. The vertical stiffener of the bottom stool plate is connected to the horizontal longitudinal girder, and the vertical stiffener is interrupted at the upper horizontal longitudinal girder. This structure eliminates hard points, eliminates stress concentration issues, and eliminates the upper bracket and anti-buckling ribs on the transverse stiffener of the hatch deck. The technical solution of the present invention can simplify and optimize the structure, facilitate construction, save materials, and reduce structural weight. The present invention reduces the number of components and simplifies the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a cross-sectional view of the bottom of a prior art corrugated transverse bulkhead at the position where the partition is located.

[0018] Figure 2 The figure is a cross-sectional view of the bottom of a prior art corrugated transverse bulkhead at a position without a partition.

[0019] Figure 3 Schematic cross-sectional view of a corrugated transverse bulkhead according to a preferred embodiment of the present invention.

[0020] Figure 4 for Figure 3 Schematic diagram of the AA section.

[0021] Figure 5 for Figure 3 Schematic diagram of the middle BB section. DETAILED DESCRIPTION

[0022] A preferred embodiment is given below and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0023] like Figure 3 、 Figure 4 and Figure 5 As shown, a bottom stool plate stiffener arrangement structure of a bulk carrier comprises a bottom stool plate 11 arranged at the bottom of a corrugated transverse bulkhead 10 and a bottom stool plate 12 arranged between an inner bottom plate 15 and the bottom stool plate 11.

[0024] The inner bottom plate 15 is located above the bottom outer plate 18. A cargo unloading plate 17 is provided on the corrugated transverse bulkhead 10, and the bottom of the cargo unloading plate 17 is fixed to the lower stool flat plate 11.

[0025] A vertical stiffener 13 is provided on the bottom bench plate 12; the upper end of the vertical stiffener 13 is not provided with an upper end bracket.

[0026] A horizontal longitudinal girder 14 is provided on the bottom bench plate 12 ; the horizontal longitudinal girder 14 is located below the lower bench flat plate 11 , the horizontal longitudinal girder 14 is not connected to the lower bench flat plate 11 , and the upper end of the vertical stiffener 13 is connected to the horizontal longitudinal girder 14 .

[0027] There are two bottom stool boards 12 , which are respectively arranged in front and behind the lower stool flat board 11 .

[0028] Both bottom stool plates 12 are provided with vertical stiffeners 13 and horizontal longitudinal girders 14 .

[0029] The vertical stiffeners 13 are arranged on the inner side of the bottom bench plate 12; the vertical stiffeners on the two bottom bench plates 12 are arranged facing each other.

[0030] The bottom bench plate 12 is distributed obliquely.

[0031] The bottom of the vertical stiffener 13 is fixed to the inner bottom plate 15 .

[0032] A lower bracket 16 is provided at the lower end of the vertical stiffener 13 , and the lower bracket 16 is fixed to the inner bottom plate 15 . The lower bracket 16 is provided between the vertical stiffener 13 and the inner bottom plate 15 .

[0033] The lower end bracket 16 is provided with an anti-buckling rib.

[0034] The bottom bench plate 12 is fixedly connected with partitions 19 , and a plurality of vertical stiffeners 13 are provided between adjacent partitions 19 .

[0035] Finite element calculations show that this technical solution meets the structural strength and deformation requirements.

[0036] The technical solution of the present invention is to add an upper horizontal longitudinal girder to the upper part of the bottom stool plate of the bulk carrier near the lower stool flat plate. The vertical stiffener of the bottom stool plate is connected to the horizontal longitudinal girder, and the vertical stiffener is interrupted at the upper horizontal longitudinal girder. This structure eliminates hard points and does not cause stress concentration problems. It also eliminates the upper end bracket of the transverse stiffener of the hatch deck and the anti-buckling ribs on the upper end bracket.

[0037] The technical solution of the present invention can make the structure simple and optimal, make construction easier, save materials, and reduce the weight of the structure. The present invention reduces the number of components and simplifies the construction process.

[0038] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A bottom stool plate stiffener arrangement structure for a bulk carrier, comprising a bottom stool plate disposed at the bottom of a corrugated transverse bulkhead, and a bottom stool plate disposed between the inner bottom plate and the bottom stool plate; vertical stiffeners are provided on the bottom stool plate; and characterized in that: There is no upper end bracket at the upper end of the vertical stiffener; a horizontal longitudinal girder is provided on the bottom bench plate; the horizontal longitudinal girder is located below the lower bench plate, the horizontal longitudinal girder is not connected to the lower bench plate, and the upper end of the vertical stiffener is connected to the horizontal longitudinal girder.

2. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 1, characterized in that: There are two bottom bench boards, which are respectively arranged in front and behind of the lower bench flat board.

3. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 2, characterized in that: Both bottom bench plates are provided with vertical stiffeners and horizontal longitudinal girders.

4. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 3, characterized in that: The vertical stiffeners are arranged on the inner side of the bottom bench plate; the vertical stiffeners on the two bottom bench plates are arranged facing each other.

5. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 1, characterized in that: The bottom bench board is distributed obliquely.

6. The bottom stool plate stiffener arrangement structure for bulk carriers according to claim 1, characterized in that: The bottom of the vertical stiffener is fixed to the inner bottom plate.

7. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 6, characterized in that: A lower bracket is provided at the lower end of the vertical stiffener, and the lower bracket is fixed to the inner bottom plate.

8. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 7, characterized in that: The lower bracket is located between the vertical stiffener and the inner bottom plate.

9. The bottom bench plate stiffener arrangement structure for bulk carriers according to claim 7, characterized in that: Anti-buckling reinforcement is fixed on the lower end bracket.

10. The bottom stool plate stiffener arrangement structure for bulk carrier according to claim 1, characterized in that: A cargo unloading plate is provided on the corrugated transverse bulkhead, and the bottom of the cargo unloading plate is fixed to the lower stool flat plate.

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