Optimization design method for sharp-included-angle hull structure and ship

Abstract

The invention relates to a sharp-included-angle hull optimization design method and a ship, a narrow space of a sharp-included-angle structure is optimized, a deck structure extends to the position close to the narrow space of the sharp-included-angle structure in the direction of a ship linear outward-floating outer plate to be provided with a cut-off end point, and a short beam structure is arranged below the cut-off end point of the deck structure for supporting; a transverse reinforcing toggle plate is arranged on the side, close to the edge of the ship linear floating outer plate, of the short beam structure, a panel is arranged above the transverse reinforcing toggle plate, the panel covers the transverse reinforcing toggle plate, and the panel extends towards the edge of the ship linear floating outer plate along the short beam structure from the position below a cut-off end point. The deck structure is cut off in advance, the deck structure does not extend to the edge of the ship linear floating outer plate any more, the deck structure is supported through the short beam structure, and the problems that construction is inconvenient and stress is concentrated due to the fact that the deck structure extends to the edge of the ship linear floating outer plate are solved.

Description

Technical Field

[0001] The invention relates to the field of ship design, and in particular to a sharp-angle hull structure design method and a ship. Background Art

[0002] In the field of shipbuilding, especially in the design of container ships, due to the large outer plate line, in the area where the line angle of the line exceeds 65°, if the inner deck directly intersects with the outer plate, a sharp angle structure will be formed between the deck and the outer plate. If the angle of the sharp angle is less than 25°, a small space will be formed at the angle of the sharp angle, resulting in stress concentration at that location, which is not conducive to later construction and maintenance.

[0003] For this kind of angle position, first of all, welding is difficult and it is not convenient to perform internal welding. Welding only from the outside cannot guarantee the welding quality. In addition, even if the welding is completed, the stress is relatively concentrated at the angle in the narrow space, which is prone to deformation and damage. Summary of the invention

[0004] In order to fundamentally solve the above technical problems, the present invention provides a sharp-angle hull optimization design method and a ship, which changes the hull structure design and avoids the sharp-angle ship's angle being too small, resulting in great construction difficulty and stress concentration.

[0005] The technical objectives of the present invention are achieved through the following technical solutions:

[0006] A method for optimizing the design of a sharp angle hull structure, the method comprising the following steps:

[0007] Step 1: determine whether the angle between the edge of the ship's linear outer plate and the deck structure is less than 25°. If it is less than 25°, determine that the area with an angle less than 25° is a narrow space with a sharp angle structure;

[0008] Step 2: The deck structure extends in the direction of the ship's linear outer flared plate to a position close to a narrow space of the sharp angle structure to set a truncation end point;

[0009] Step 3: a short beam structure is provided below the cut-off end of the deck structure for support, wherein the short beam structure is obliquely supported below the cut-off end of the deck structure and between the ship's linear outer flared outer plate below the cut-off end;

[0010] Step 4: a transverse reinforcement bracket is arranged on one side of the short beam structure close to the edge of the ship's linear outer flare plating, wherein the transverse reinforcement bracket is arranged to connect the short beam structure and the ship's linear outer flare plating, and the transverse reinforcement bracket extends along the short beam structure to the edge of the ship's linear outer flare plating;

[0011] Step 5: a panel is arranged above the transverse reinforcement bracket, the panel covers the transverse reinforcement bracket, and the panel extends from below the cut-off end point along the short beam structure toward the edge of the ship's linear outer plate.

[0012] Furthermore, the angle between the short beam structure and the deck structure and the angle between the short beam structure and the linear flared outer plate of the ship are both greater than 45°.

[0013] Furthermore, a safety protection structure is provided above the truncated end point of the deck structure.

[0014] Furthermore, in step 3, it also includes using finite element software modeling to analyze whether the stress in the optimized area behind the sharp-angle hull structure of the deck structure under load conditions meets the requirements. If not, the angle of the short beam structure is adjusted so that the stress in the optimized area behind the sharp-angle hull structure meets the requirements.

[0015] Furthermore, in step 1, the flare angle of the linear flared outer plate of the ship is greater than 60°.

[0016] Furthermore, there is a height difference between the transverse reinforcing bracket connecting one end of the short beam structure and the lower end surface of the deck structure, and the height difference is 15-25mm, which is convenient for welding the transverse reinforcing bracket to ensure the strength of the transverse reinforcing bracket.

[0017] Furthermore, the height of the safety protection structure above the deck structure is between 600mm and 150mm.

[0018] Furthermore, water flow holes are respectively arranged on the transverse reinforcing bracket and the short beam structure. The water flow hole of the short beam structure is arranged near the short beam structure connecting the ship's linear outer flank plate, and the water flow hole on the transverse reinforcing bracket is arranged at the angle between the transverse reinforcing bracket close to the short beam structure and the ship's linear outer flank plate.

[0019] Furthermore, the narrow space of the sharp angle structure is located in one or more of the cabin, cargo hold, bow or stern.

[0020] On the other hand, a ship is provided, wherein a truncated end point is arranged on the edge side of the deck structure of the hull close to the ship's linear flared outer plate, a short beam structure is supported below the truncated end point, and the short beam structure is obliquely supported between the truncated end point of the deck structure and the ship's linear flared outer plate below the truncated end point; a panel is arranged above the transverse reinforcing bracket, the panel covers the transverse reinforcing bracket, and the panel extends from below the truncated end point along the short beam structure toward the edge of the ship's linear flared outer plate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention optimizes the narrow space of the sharp angle structure and cuts off the deck structure in advance. The deck structure no longer extends to the edge of the linear outer plate of the ship, and the deck structure is supported by a short beam structure, thereby solving the problem of the narrow space of the sharp angle structure where the deck structure extends to the edge of the linear outer plate of the ship, thereby avoiding the problems of difficulty in construction and maintenance and stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional schematic diagram of the optimized sharp angle hull structure of the present invention.

[0024] Figure 2 It is a top view schematic diagram of the optimized sharp angle hull structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the short beam structure of the present invention.

[0026] Figure 4 It is a schematic diagram of a guardrail in the present invention.

[0027] Figure 5 It is a schematic diagram of the arrangement of the water flow holes at the transverse reinforcement bracket in the present invention.

[0028] Figure 6 It is a schematic diagram of the connection between the transverse reinforcement bracket and the outer plate rib in the present invention.

[0029] In the figure:

[0030] 1. Deck structure; 2. Ship linear outer plate; 3. Short beam structure; 4. Transverse reinforcement bracket; 5. Guardrail; 6. Water flow hole; 7. Deck load; 8. Optimization area of ​​narrow space in sharp angle structure; 9. Panel; 10. Truncated end point; 11. Outer plate rib. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0032] A method for optimizing the design of a sharp angle hull structure, the method comprising the following steps:

[0033] Step 1, determine whether the angle between the edge of the ship's linear flared outer plate 2 and the deck structure 1 is less than 25°. If it is less than 25°, determine that the area with an angle less than 25° is a narrow space with a sharp angle structure; the ship's linear flared outer plate 2 exists at the bow, stern, engine room and cargo hold, so there may be narrow spaces with a sharp angle structure at the bow, stern, engine room and cargo hold.

[0034] In one embodiment, the flare angle of the ship's linear flared outer plate that forms a narrow space with a sharp angle structure is greater than 60°, and the area with a flare angle greater than 60° is more likely to form a narrow space with a sharp angle structure.

[0035] Step 2: Optimize the optimization area 8 of the narrow space of the sharp angle structure. The deck structure 1 extends toward the ship's linear outer plate 2 and is cut off in advance at a position close to the narrow space of the sharp angle structure to form a cutoff end point, such as Figure 1 and Figure 2 shown.

[0036] Step 3: a short beam structure 3 is provided below the truncated end point 10 of the deck structure 1 for support, and the short beam structure 3 is obliquely supported below the truncated end point 10 of the deck structure 1 and between the ship linear flared outer plate 2 below the truncated end point 10.

[0037] As a preferred solution, the angle between the short beam structure 3 and the deck structure 1 and the angle between the short beam structure and the ship's linear flared outer plate are both greater than 45° and less than 90°.

[0038] Preferably, the upper part of the deck structure 1 may need to bear a heavier deck load 7, such as the generator in the engine room, and it is also necessary to use finite element software modeling to analyze whether the stress of the optimized area after the sharp angle hull structure of the deck structure 1 under load conditions meets the requirements. If not, adjust the angle of the short beam structure 3 so that the stress of the optimized area after the sharp angle hull structure meets the requirements. When the stress of the optimized area after the sharp angle hull structure of the deck structure 1 under load conditions does not meet the requirements, that is, the stress exceeds the set range, consider gradually increasing the angle between the short beam structure 3 and the ship's linear outer flared outer plate 2.

[0039] Step 4, a transverse reinforcing bracket 4 is arranged on one side of the short beam structure 3 close to the edge of the ship's linear outer flaring plate, the transverse reinforcing bracket 4 is arranged to connect the short beam structure 3 and the ship's linear outer flaring plate 2, and the transverse reinforcing bracket 4 extends along the short beam structure 3 to the edge of the ship's linear outer flaring plate 2;

[0040] Preferably, there is a height difference between one end of the transverse reinforcing bracket 4 connecting the short beam structure 3 and the lower end surface of the deck structure 1, and the height difference is 15-25mm. The setting of the height difference facilitates the welding operation between the transverse reinforcing bracket and the short beam structure, thereby ensuring the welding quality and the structural strength of the transverse reinforcing bracket.

[0041] Step 5, a panel 9 is arranged above the transverse reinforcing bracket 4, the panel 9 covers the transverse reinforcing bracket 4, the transverse reinforcing brackets 4 are arranged parallel to each other, and the panel 9 extends from below the cut-off end point along the short beam structure 3 toward the edge of the ship's linear outer plate 2.

[0042] As a preferred solution, considering that water may accumulate at the position of the transverse bracket 4 due to the need for tank washing of the deck structure 1, water flow holes 6 are respectively provided on the transverse reinforcement bracket 4 and the short beam structure 3.

[0043] More specifically, the short beam structure is a steel plate structure, such as Figure 3 and Figure 5 As shown, the water flow holes 6 of the short beam structure 3 are arranged near the position where the short beam structure 3 connects to the ship's linear outer flared outer plate 2, and the water flow holes 6 on the transverse reinforcing bracket 4 are arranged at the angle between the transverse reinforcing bracket 4 and the short beam structure 3 and the ship's linear outer flared outer plate 2.

[0044] As a preferred solution, since the deck structure 1 is cut off in advance, considering the need for deck traffic, a safety protection structure is also provided above the cut-off end point 10 of the deck structure 1. The safety protection structure is such as a guardrail 5. The protection height of the safety protection structure above the deck structure 1 is 600mm-150mm. Figure 4 shown.

[0045] In one embodiment, Figure 6 As shown, a plurality of outer plate ribs 11 are further arranged along the edge position of the ship's linear outward flaring outer plate toward the inner direction of the hull, and the outer plate ribs 11 are like T-shaped bars, and the transverse reinforcing bracket 4 is arranged at the position corresponding to the outer plate ribs 11. When the transverse reinforcing bracket 4 and the short beam structure 3 are installed, the outer plate ribs 11 in the corresponding position area are removed, one end of the transverse reinforcing bracket 4 is connected to the short beam structure 3, and the other section of the transverse reinforcing bracket 4 extends to the outer plate rib 11 along the edge position of the ship's linear outward flaring outer plate, one end of the panel 9 is connected to the short beam structure 3, and the other section of the panel 9 is connected to the outer plate rib 11 along the edge position of the ship's linear outward flaring outer plate.

[0046] The present embodiment also provides a ship, which can be built by optimizing a ship with a narrow space having a sharp angle structure according to the above method, wherein a truncated end point 10 is arranged on the edge side of the deck structure 1 of the hull close to the ship's linear flared outer plate 2, and a short beam structure 3 is supported below the truncated end point 10, and the short beam structure 3 is obliquely supported between the truncated end point 10 of the deck structure 1 and the ship's linear flared outer plate 2 below the truncated end point 10; a panel 9 is arranged above the transverse reinforcing bracket 4, and the panel 9 covers the transverse reinforcing bracket 4, and the panel 9 extends from below the truncated end point 10 along the short beam structure 3 toward the edge of the ship's linear flared outer plate 2.

[0047] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A method for optimizing the design of a sharp angle hull structure, characterized in that: The method comprises the following steps: Step 1: determine whether the angle between the edge of the ship's linear outer plate and the deck structure is less than 25°. If it is less than 25°, determine that the area with an angle less than 25° is a narrow space with a sharp angle structure; Step 2: The deck structure extends in the direction of the ship's linear outer flared plate to a position close to a narrow space of the sharp angle structure to set a truncation end point; Step 3: a short beam structure is provided below the cut-off end of the deck structure for support, wherein the short beam structure is supported below the cut-off end of the deck structure and between the ship's linear outer flared outer plate below the cut-off end; Step 4: a transverse reinforcement bracket is arranged on one side of the short beam structure close to the edge of the ship's linear outer flare plating, wherein the transverse reinforcement bracket is arranged to connect the short beam structure and the ship's linear outer flare plating, and the transverse reinforcement bracket extends along the short beam structure to the edge of the ship's linear outer flare plating; Step 5: a panel is arranged above the transverse reinforcement bracket, the panel covers the transverse reinforcement bracket, and the panel extends from below the cut-off end point along the short beam structure toward the edge of the ship's linear outer plate.

2. A method for optimizing the design of a sharp angle hull structure according to claim 1, characterized in that: The angle between the short beam structure and the deck structure and the angle between the short beam structure and the linear flared outer plate of the ship are both greater than 45°.

3. The method for optimizing the design of a sharp angle hull structure according to claim 1, characterized in that: A safety protection structure is also arranged above the truncated end point of the deck structure.

4. A method for optimizing the design of a sharp angle hull structure according to claim 2, characterized in that: In the step 3, it also includes using finite element software to model and analyze whether the stress in the optimized area behind the sharp-angle hull structure of the deck structure under load conditions meets the requirements. If not, the angle of the short beam structure is adjusted so that the stress in the optimized area behind the sharp-angle hull structure meets the requirements.

5. The method for optimizing the design of a sharp angle hull structure according to claim 1, characterized in that: In step 1, the flare angle of the linear flared outer plate of the ship is greater than 60°.

6. The method for designing and optimizing a sharp angle hull structure according to claim 1, characterized in that: There is a height difference between the transverse reinforcing bracket connecting one end of the short beam structure and the lower end surface of the deck structure, and the height difference is 15-25mm.

7. The method for designing and optimizing a sharp angle hull structure according to claim 3, characterized in that: The height of the safety protection structure above the deck structure is 600mm-150mm.

8. The method for designing and optimizing a sharp angle hull structure according to claim 1, characterized in that: Water holes are respectively arranged on the transverse reinforcing bracket and the short beam structure. The water hole of the short beam structure is arranged near the short beam structure connecting the ship's linear outer flaring outer plate, and the water hole on the transverse reinforcing bracket is arranged at the angle between the transverse reinforcing bracket close to the short beam structure and the ship's linear outer flaring outer plate.

9. The method for optimizing the design of a sharp angle hull structure according to claim 1, characterized in that: The narrow space of the sharp angle structure is located in one or more of the cabin, cargo hold, bow or stern.

10. A ship, characterized in that: A truncated end point is arranged on the edge side of the deck structure of the hull close to the ship's linear flared outer plate, and a short beam structure is supported below the truncated end point. The short beam structure is obliquely supported between the truncated end point of the deck structure and the ship's linear flared outer plate below the truncated end point; a panel is arranged above the transverse reinforcing bracket, the panel covers the transverse reinforcing bracket, and the panel extends from below the truncated end point along the short beam structure toward the edge of the ship's linear flared outer plate.

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