Bottom stool reinforcing structure and ship with same

Abstract

The invention provides a bottom stool reinforcing structure and a ship with the same. The bottom stool reinforcing structure comprises bottom stool side plates on the two sides and longitudinal girders on the two sides. The bottom stool side plate is obliquely fixed on the edge of the inner bottom; the top of the longitudinal girder and the bottom stool side plate are integrally formed, and a bent part is formed at the connecting part. Through the longitudinal girders and the bottom stool side plates which are integrally formed, the overall structural strength is improved, stress concentration caused by assembly errors of the longitudinal girders and the bottom stool side plates in the prior art is eliminated, and the technical problems that in the prior art, the construction difficulty of high-precision assembly requirements is easily solved, and the length of weld joints and the number of structural parts are reduced are solved.

Description

Technical field:

[0001] The invention relates to the field of ship structure design, in particular to a bottom stool reinforcement structure and a ship thereof. Background technology:

[0002] In oil tankers with a depth greater than 16 meters, a bottom stool structure is usually provided at the lower end of the vertical trough bulkhead. The bottom stool falls on the inner bottom. Two longitudinal girders are arranged under the inner bottom to align with the bottom stool side plates. The inner bottom and the two longitudinal girders provide support for the bottom stool. The bottom stool side plates and the inner bottom enclose a space, which is usually connected to the ballast tank under the inner bottom. The capacity of the ballast tank can be increased and the buoyancy and stability of the ship can be adjusted. However, it is necessary to design passage holes on the inner bottom plate and the bottom stool cross partition, and to configure straight ladders and handrails. In addition, the existing design is that the bottom stool side plates and longitudinal girders are welded to the inner bottom, with a total of 4 corner welds on the left and right. At this connection, in order to facilitate the transmission of the shear force of the bottom stool side plates and reduce stress concentration, it is customary to require that the center line of the inner bottom plate, the center line of the side plate and the center line of the longitudinal girders intersect at one point during on-site assembly. The precision requirements are extremely high and the construction is difficult.

[0003] There is an urgent need for a bottom bench reinforcement structure and a ship thereof, which can help solve the construction difficulty of high-precision assembly requirements in the prior art and reduce the technical problems of weld length and the number of structural parts. Summary of the invention:

[0004] In one embodiment, the present invention provides a base bench reinforcement structure, which improves the overall structural strength through integrally formed longitudinal girders and base bench side panels, eliminates stress concentration caused by assembly errors between the longitudinal girders and the base bench side panels in the prior art, and helps to solve the technical problems of construction difficulty of high-precision assembly requirements in the prior art and reduce weld length and the number of structural parts.

[0005] The bottom stool reinforcement structure includes bottom stool side plates on both sides and longitudinal girders on both sides;

[0006] The side panels of the bottom stool are fixed obliquely to the inner bottom edge;

[0007] The top of the longitudinal girder is integrally formed with the side plate of the bottom stool, and the connecting part forms a curved part.

[0008] In one embodiment, a longitudinal corrugated bulkhead is fixed above each of the bottom stool side panels;

[0009] A plurality of transverse braces arranged at intervals are arranged between the longitudinal beams on both sides.

[0010] In one embodiment, toggle plates are provided on both sides of the two ends of the cross brace.

[0011] In one embodiment, the inner bottom is a horizontally placed transverse plate, and the bottom of the inner bottom plate is provided with longitudinal bones extending outward;

[0012] The length direction of the longitudinal bone is the bow and the stern.

[0013] In one embodiment, the longitudinal beams on both sides of the bottom of the inner bottom are provided with bottom ribs outwardly.

[0014] In one embodiment, transverse partitions are provided between the longitudinal girders.

[0015] In one embodiment, a first weight-reducing hole is provided on the transverse partition.

[0016] In one embodiment, a second weight-reducing hole is provided on the transverse partition.

[0017] In one embodiment, the bent portion has a rounded corner arranged inwardly.

[0018] In one embodiment, the present invention provides a ship with a bottom stool reinforcement structure, the ship comprising the bottom stool reinforcement structure;

[0019] The bottom bench side panels on both sides are provided with a first cargo hold and a second cargo hold;

[0020] The bottom stool reinforcement structure is arranged in the hull. Description of the drawings:

[0021] Figure 1 This is a schematic diagram of a bottom stool reinforcement structure in one embodiment of the present invention;

[0022] Figure 2 It is an enlarged structural diagram of a node in the bottom stool reinforcement structural diagram in another embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the bottom structure of the bottom stool reinforcement structure in another embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of a longitudinal cross section in another embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the hull structure in another embodiment of the present invention.

[0026] Reference numerals:

[0027] Bottom bench side panel 1

[0028] Bow 101

[0029] Stern 102

[0030] The first weight reduction hole 103

[0031] Second weight reduction hole 104

[0032] First cargo hold 105

[0033] Second cargo hold 106

[0034] Longitudinal girder 2

[0035] Insole 3

[0036] Bending part 4

[0037] Rounded Corner 41

[0038] Longitudinal corrugated bulkhead 5

[0039] Horizontal support 6

[0040] Toggle plate 7

[0041] Longitudinal bone 8

[0042] Bottom rib 9

[0043] Partition 10 Specific embodiment:

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0046] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0047] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0048] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0049] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0050] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0051] Figure 1 This is a schematic diagram of a bottom stool reinforcement structure in one embodiment of the present invention; Figure 2 It is an enlarged structural diagram of a node in the bottom stool reinforcement structural diagram in another embodiment of the present invention; Figure 3 It is a schematic diagram of the bottom structure of the bottom stool reinforcement structure in another embodiment of the present invention; Figure 4 This is a schematic diagram of a longitudinal cross-section in another embodiment of the present invention. Figure 5 It is a schematic diagram of the hull structure in another embodiment of the present invention.

[0052] like Figures 1 to 5 As shown, in one embodiment, the present invention provides a bottom stool reinforcement structure, the bottom stool reinforcement structure comprises bottom stool side panels 1 on both sides and longitudinal beams 2 on both sides;

[0053] The side plate 1 of the bottom stool is fixed obliquely to the edge of the inner bottom 3;

[0054] The top of the longitudinal girder 2 is integrally formed with the side plate 1 of the bottom stool, and the connecting part forms a curved portion 4.

[0055] In this embodiment, a specific structure of a bottom stool reinforcement structure is provided. The bottom stool reinforcement structure is an intersection structure connecting various main supporting structures inside the hull in segmented construction of ships. Its welding angle and assembly accuracy requirements are relatively high. In particular, with the increase in manual welding costs and steel costs, the structure welded with multiple connecting plates in the prior art can no longer meet the demand. On the one hand, the larger the scale of the hull, the more difficult the structure positioning is, and the higher the steel cost is. On the other hand, such multi-angle welding and assembly errors will lead to stress concentration, and the bottom stool reinforcement structure is the intersection of multiple supporting structures. Therefore, we abandon the four-plate welding method and use a bent portion 4 to form a connection between the bottom stool side plate 1 and the longitudinal girder 2, which not only meets the structural connection use, but also improves the welding mechanical properties, which helps to solve the construction difficulty of high-precision assembly requirements in the prior art and reduce the technical problems of weld length and the number of structural parts.

[0056] In addition, the inner bottom 3 is a horizontally arranged structural plate. Figure 1 As a basis, the inner bottom 3 is designed as horizontal plates on the left and right sides. Figure 1 It is a cross-sectional structure in the length direction of the hull. Between the inner bottom 3 plates on both sides, there is a longitudinal girder 2 below, which is also a strip of plates arranged vertically along the length direction of the hull. The bottom bench side plate 1 structure is located at the top and is in the shape of an inverted funnel that is small at the top and large at the bottom. The bottom bench side plate 1 is not only also a plate, but also integrally formed with the longitudinal girder 2.

[0057] In one embodiment, a longitudinal grooved bulkhead 5 is fixed above each bottom stool side plate 1;

[0058] A plurality of transverse braces 6 arranged at intervals are provided between the longitudinal beams 2 on both sides.

[0059] In this embodiment, a specific structure with a cross brace 6 is provided. The cross brace 6 does not exist in the prior art. In addition, in order to further reduce the overall stress concentration, both ends of the cross brace 6 are provided with fillets, and the radii of the two are different, namely R1 and R2. The left side is the stern direction, and the right side is the bow direction. Figure 3 It is a top view of the ship, below the inner bottom 3. The bottom bench side plates 1 and the longitudinal girders 2 on both sides are symmetrically arranged on both sides of the midship.

[0060] In one embodiment, toggle plates 7 are provided on both sides of both ends of the cross brace 6 .

[0061] In this embodiment, two ends of a cross brace 6 are provided. From a top view, the two sides are divided into toggle plates 7 with different radii, which is also a structure of different radii in the previous embodiment.

[0062] In one embodiment, the inner bottom 3 is a horizontally placed transverse plate, and a longitudinal bone 8 extending outward is provided at the bottom of the inner bottom 3;

[0063] The longitudinal direction of the longitudinal bone 8 is the bow 101 and the stern 102 .

[0064] In this embodiment, a specific implementation of the longitudinal bone 8 under the inner bottom 3 is provided. In the overall structure, the arrangement of the longitudinal bone 8 is similar to that of the cross brace 6, and is also arranged at intervals. The difference is that the cross brace 6 is between the longitudinal girders 2 on both sides, and the longitudinal bone 8 is on the outside of the longitudinal girders 2 on both sides and is located below the inner bottom 3. The longitudinal bone 8 is a parallel plate structure parallel to the longitudinal girders 2 and also located on the inner bottom 3.

[0065] In one embodiment, the longitudinal beams 2 on both sides of the bottom of the inner bottom 3 are provided with bottom ribs 9 outwardly.

[0066] In this embodiment, a specific structure is provided in which the longitudinal girders 2 on both sides of the bottom of the inner bottom 3 are provided with bottom ribs 9 outwardly. The bottom ribs 9 are ribs located between the two longitudinal bones 8 and arranged at intervals along the length direction of the hull.

[0067] In one embodiment, transverse partitions 10 are arranged between the longitudinal girders 2 .

[0068] The plate structure disposed between the two longitudinal girders 2 and the transverse partition 10 divide the space between the longitudinal girders 2 to improve the overall strength.

[0069] In one embodiment, a first weight-reducing hole 103 is provided on the diaphragm 10. In order to reduce the weight of the diaphragm 10 as a whole, the first weight-reducing hole 103 is provided on it.

[0070] In one embodiment, a second lightening hole 104 is disposed on the diaphragm 10 .

[0071] In one embodiment, the bent portion 4 has a rounded corner 41 disposed inwardly.

[0072] In one embodiment, the present invention further provides a ship with a bottom stool reinforcement structure, the ship comprising the bottom stool reinforcement structure;

[0073] The bottom bench side panels 1 on both sides have a first cargo hold 105 and a second cargo hold 106;

[0074] The bottom stool reinforcement structure is arranged in the hull.

[0075] In this embodiment, a ship with a bottom stool reinforcement structure is also provided.

[0076] In addition, the side plates of the bottom bench are combined with the longitudinal girders into a composite plate, which is pressed into a radius R shape at the inner bottom, which is beneficial to the vertical transmission of the shear force of the side plates of the bottom bench;

[0077] The inner bottom plate is disconnected at the joint plate, so the inner bottom plate and inner bottom longitudinal bones are eliminated between the left and right joint plates, which can reduce the structural weight, reduce one inner bottom plate splicing weld, and reduce two inner bottom longitudinal bones and two inner bottom fillet welds, thus reducing the steel cost and welding workload;

[0078] After the bottom bench side plate is combined with the longitudinal girder, there is only one fillet weld, which is one less fillet weld than the original design, reducing welding workload, reducing PM2.5 emissions, and achieving green shipbuilding;

[0079] After the side plates of the bottom bench are combined with the longitudinal girders, the joint plates are assembled and welded to the inner bottom, without the need for centerline alignment. The assembly accuracy requirement is lower than the original solution, reducing the construction difficulty.

[0080] After the bottom bench side plates are combined with the longitudinal girders, the multi-angle welding design is eliminated and the welding mechanical properties are improved.

[0081] After the side plates of the bottom bench are combined with the longitudinal girders, the inner bottom plate and the inner bottom longitudinal bones are eliminated, and there is no need to configure additional straight ladders and handrails, which reduces costs;

[0082] After the side plates of the bottom stool are combined with the longitudinal girders, the inner bottom plate and the inner bottom longitudinal bones are cancelled, and the support provided by the inner bottom to the bottom stool is weakened. A cross brace is set on the inner bottom plane and the inner bottom rib plate to connect the inner bottoms on the left and right sides, which is conducive to the lateral transmission of the structural shear force. The height of the cross brace is generally not less than 150 mm. The cross brace is set at both ends to reduce the stress concentration at the ends. The length of the soft site is appropriately lengthened according to the stress prediction results, and a soft site bracket with a radius of R2 can be set on the back;

[0083] A number of diaphragms are arranged in the bottom stool to improve the strength and rigidity of the bottom stool. The diaphragms are aligned with the bottom ribs of the ship. The original passage holes of the diaphragms are cancelled and replaced with lightening holes. The number of openings is reduced, thereby improving the stress level of the diaphragms.

[0084] Beneficial effects:

[0085] The invention avoids the high-precision assembly requirements of aligning the three center lines of the inner bottom plate, bottom bench side plate and longitudinal girders, reduces the construction difficulty, reduces the structural weight, reduces the cost of steel, and also reduces the length of welds, reduces PM2.5 emissions, and achieves green shipbuilding.

[0086] Reduce the number of handrails and ladders.

[0087] This patent can avoid the high-precision assembly requirements of three-line centering, reduce construction difficulty, reduce structural weight, reduce costs, reduce weld length, reduce PM2.5 emissions, and achieve green shipbuilding.

[0088] If implemented on MR ships, the weld length can be reduced by 200 meters and the weight can be reduced by 40 tons.

[0089] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A bottom bench reinforcement structure, characterized in that: The bottom stool reinforcement structure comprises: A bottom stool side plate (1) on both sides, wherein the bottom stool side plate (1) is fixed obliquely on the edge of the inner bottom (3); A longitudinal girder (2) on both sides, the top of the longitudinal girder (2) and the side plate (1) of the bottom bench are integrally formed, and the connecting part forms a curved part (4).

2. The bottom stool reinforcement structure according to claim 1, characterized in that: A longitudinal grooved bulkhead (5) is fixed above each of the bottom stool side panels (1); A plurality of transverse braces (6) arranged at intervals are provided between the longitudinal beams (2) on both sides.

3. The bottom stool reinforcement structure according to claim 2, characterized in that: Toggle plates (7) are provided on both sides of the two ends of the cross brace (6).

4. The bottom stool reinforcement structure according to claim 3 is characterized in that: The inner bottom (3) is a horizontally placed transverse plate, and the bottom of the inner bottom (3) is provided with longitudinal bones (8) extending outwards; The longitudinal direction of the longitudinal bone (8) is the bow (101) and the stern (102).

5. The bottom stool reinforcement structure according to claim 4, characterized in that: The longitudinal beams (2) on both sides of the bottom of the inner bottom (3) are provided with bottom ribs (9) outwardly.

6. The bottom stool reinforcement structure according to claim 5, characterized in that: A transverse partition (10) is arranged between the longitudinal girders (2).

7. The bottom stool reinforcement structure according to claim 6, characterized in that: The transverse partition (10) is provided with a first weight-reducing hole (103).

8. The bottom stool reinforcement structure according to claim 7, characterized in that: The bottom rib plate (10) is provided with a second weight-reducing hole (104).

9. The bottom stool reinforcement structure according to claim 8, characterized in that: The bent portion (4) has a rounded corner (41) arranged inwardly.

10. A ship with a bottom stool reinforcement structure, characterized in that: The ship comprises a bottom stool reinforcement structure according to any one of claims 1 to 9; The bottom stool side panels (1) on both sides have a first cargo hold (105) and a second cargo hold (106); The bottom stool reinforcement structure is arranged in the hull.

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