CN-122009425-A - Method for enhancing strength of door hole structure of ship superstructure

CN122009425ACN 122009425 ACN122009425 ACN 122009425ACN-122009425-A

Abstract

The invention discloses a strength enhancement method of a ship superstructure door hole structure, relates to the technical field of ship construction, and solves the problems that the prior art lacks a structural optimization scheme aiming at the problem, so that the strength is required to be compensated by increasing the plate thickness or adopting a complex supporting structure, and the manufacturing cost and the process complexity are increased. The method comprises the steps of setting a temporary reinforcing area at the bottom of a designed door hole to form a strength reinforcing scheme, carrying out production according to the strength reinforcing scheme, completing cutting of a steel plate, transporting the cut steel plate to the site, finally cutting the temporary reinforcing area to restore the designed door hole size, and enabling two sides of the temporary reinforcing area to extend to the two sides of the designed door hole respectively, wherein the upper and lower height difference of the temporary reinforcing area is 200mm. The problem of the steel sheet deformation that door hole bottom caused because of the structure weak is solved, through optimizing door hole below joint height and keeping the unresectable temporary structure, deformation control and the balanced effect of production efficiency have been realized.

Inventors

SHEN FAN
CUI HANWEN
XIONG WEN
LIU QING
HU XIAOJUN
WANG WEI
YIN HONGJUN
HUANG LINFENG

Assignees

南通中远海运川崎船舶工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (9)

1. A strength enhancement method for a ship superstructure door hole structure is characterized by comprising the following steps of setting a temporary enhancement area at the bottom of a designed door hole to form a strength enhancement scheme, carrying out production according to the strength enhancement scheme, completing cutting of a steel plate, transporting the cut steel plate to a site, and finally cutting the temporary enhancement area to restore the designed door hole profile.
2. The method of reinforcing a door opening structure of a marine superstructure as set forth in claim 1, wherein the temporary reinforcing areas are extended to positions on both sides of the door opening, respectively.
3. A method for reinforcing a door opening structure of a marine superstructure as set forth in claim 1 or 2, wherein the designed door opening has a through-going lower end, and the temporary reinforcing area is located at the lower end of the designed door opening.
4. A method of reinforcing a marine superstructure door opening structure according to claim 1 or 2, wherein said designed door opening comprises a lower opening floor, and the underside of the temporary reinforcing area extends above the opening floor.
5. A method for reinforcing a marine superstructure door aperture structure according to claim 4, wherein said aperture floor has a height of 100mm or less.
6. A method for reinforcing a door opening structure of a marine superstructure according to claim 1 or 2, wherein the difference in height between the upper and lower sides of the temporary reinforcing area is 200mm.
7. A method for reinforcing a door opening structure of a marine superstructure as set forth in claim 1 or 2, wherein said temporary reinforcing areas are further extended upward with chamfers at both ends thereof and are connected to the corresponding sides of the designed door opening by chamfers.
8. A method for reinforcing a door opening structure of a marine superstructure as set forth in claim 7, wherein said chamfer radius is 50mm.
9. The method of reinforcing a door opening structure of a marine superstructure according to claim 7, wherein the temporary reinforcing area is cut, and the cut surface is further polished.

Description

Method for enhancing strength of door hole structure of ship superstructure Technical Field The invention relates to the technical field of ship construction, in particular to a method for enhancing the strength of a door hole structure of a ship superstructure. Background In marine superstructure manufacturing, the steel panels of the door opening area often remain at a lower threshold height or are fully open to the bottom due to design requirements. Because the thickness of the area is thinner (usually 7 mm), the area is easy to generate larger deformation due to uneven stress in the production links of lifting, transporting and the like, and the structural integrity and the subsequent assembly quality are affected. The lack of structural optimization solutions to this problem in the prior art results in the need to compensate for strength by increasing sheet thickness or employing complex support structures, increasing manufacturing costs and process complexity. Disclosure of Invention The invention aims to provide a strength enhancement method for a ship superstructure door hole structure, which solves the problem of steel plate deformation at the bottom of a door hole caused by weak structure, and realizes balance of deformation control and production efficiency by optimizing the connection height below the door hole and reserving a resectable temporary structure. The technical aim of the invention is realized by the following technical scheme: A strength enhancement method of a ship superstructure door hole structure comprises the following steps of setting a temporary enhancement area at the bottom of a designed door hole to form a strength enhancement scheme, carrying out production according to the strength enhancement scheme, completing cutting of a steel plate, transporting the cut steel plate to a site, and finally cutting the temporary enhancement area to restore to the designed door hole profile. Through adopting above-mentioned technical scheme, carry out structural reinforcement to the door hole of design, just set up interim enhancement region at the design stage, form intensity enhancement scheme, strengthened its intensity, make things convenient for its transportation and installation work, reduced the possibility of deformation, solved the door hole bottom and warp the problem because of the steel sheet that the structure is weak leads to, realized the balance of deformation control and production efficiency. Further, both sides of the temporary reinforcing area are respectively extended to the positions of both sides of the designed door opening. By adopting the technical scheme, the temporary reinforcing area extends to two sides of the door hole, so that the reinforcing effect on the door hole is improved. Further, the lower end of the designed door hole is communicated, and the temporary reinforcing area is positioned at the lower end of the designed door hole. Through adopting above-mentioned technical scheme, to the condition that the door hole lower extreme link up, the regional connection of strengthening in its lower extreme temporarily improves its intensity. Still further, the engineered door opening includes an opening floor at a lower end, and the temporary reinforcing area underside extends above the opening floor. Through adopting above-mentioned technical scheme, to the condition that there is hole bottom plate door hole lower extreme, the regional connection of temporarily strengthening improves its intensity in hole bottom plate top. Still further, the height of the aperture floor is 100mm or less. Through adopting above-mentioned technical scheme, the door hole structure of the height below 100mm to the hole bottom plate, this interim reinforcing area strengthens effectually. Further, the difference in height between the upper and lower sides of the temporary reinforcing area is 200mm. By adopting the technical scheme, the 200mm temporary reinforced area can better give consideration to deformation control and production cost. Furthermore, the two ends of the temporary reinforcing area are also extended upwards to be provided with chamfers, and are connected to the corresponding sides of the designed door hole through the chamfers. By adopting the technical scheme, the setting of chamfer has further reduced the stress of corresponding position, improves its anti-deformation effect. Still further, the chamfer radius is 50mm. By adopting the technical scheme, the chamfering with the radius of 50mm better gives consideration to deformation control and production cost. Further, after the temporary reinforcing area is cut, the cut surface is polished. By adopting the technical scheme, the surface quality after the temporary reinforced area is cut is improved in a polishing mode, and the final quality of the named door hole is improved. In summary, the application can structurally reinforce the door hole which is completely perforated to the bottom or the door hole with th