CN116002010A - Construction method of topboard - Google Patents
Construction method of topboard Download PDFInfo
- Publication number
- CN116002010A CN116002010A CN202310106379.3A CN202310106379A CN116002010A CN 116002010 A CN116002010 A CN 116002010A CN 202310106379 A CN202310106379 A CN 202310106379A CN 116002010 A CN116002010 A CN 116002010A
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- round steel
- butt joint
- welding
- topboard
- topsides
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- 238000010276 construction Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 147
- 239000010959 steel Substances 0.000 claims abstract description 147
- 210000001503 joint Anatomy 0.000 claims abstract description 76
- 238000003466 welding Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000035515 penetration Effects 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the technical field of ship construction, in particular to a method for constructing a topboard. The method for constructing the topsides comprises the following steps of S1: in the stage of ship section construction, dividing round steel into a middle welding area and slow welding areas at two ends along the axial direction of the round steel, wherein the welding areas of the round steel are symmetrically welded right above the topsides strake, and a non-penetration welding area is formed between the round steel and the upper end surface of the topsides strake; s2: welding each side panel butt joint when the ship side sections are assembled or folded; s3: round steel is arranged above each butt joint of the gangway roof plates, two ends of the round steel of each butt joint of the gangway roof plates respectively form round steel butt joints with the end parts of the slow welding areas of the round steel at the corresponding sides, and each round steel butt joint is welded; s4: and the slow welding area of the round steel and the round steel of the butt joint of the cross-roof strake are symmetrically welded right above the cross-roof strake. The topsides plates are welded with round steel, and a non-penetration area is formed between the round steel and the non-penetration area, so that the cracking resistance and the crack stopping performance of the topsides plates are improved.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a method for constructing a topboard.
Background
When a middle-large ship sails under severe sea conditions, for example, in a billow environment, the middle part of the ship is positioned at the wave crest position of the sea wave, and the bow and the stern are both positioned at the wave trough position of the sea wave, so that the middle part of the ship body is subjected to upward buoyancy of the sea water, and the bow and the stern are temporarily suspended (without upward buoyancy). At this time, the head and the tail of the ship have the tendency of sinking, the middle part of the ship is subjected to the combined action of upward buoyancy and the gravity of the head and the tail of the ship, the longitudinal bending deformation tendency occurs, larger tensile stress is generated, the side outer plate at the middle part of the ship can be cracked from top to bottom when serious, and the serious marine accident of the ship from the middle part is finally caused. The cracking and stopping properties of the side outer panels, in particular of the roof rail (the uppermost rail in the side outer panels), are therefore directly relevant for the safety of the vessel.
At present, the demand of cracking resistance is met as much as possible by mainly improving the material thickness, strength and toughness grade of the topsides board in the ship construction process. As shown in fig. 1, the topsides 1 is located above the main deck 10, and the upper end of the topsides 1 has a single steel plate free edge structure, and when the steel plate free edge structure is subjected to complex and large tensile stress, cracks are easily generated from the top end thereof, and the crack resistance is poor. Moreover, the portplate 1 has poor resistance to crack propagation downward, i.e. poor crack stopping performance. When the upper end of the portplate 1 once cracks are generated, the cracks are liable to extend downward, resulting in serious accidents.
Accordingly, there is a need for a method of constructing a topboard to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a building method of a topboard, which is used for improving the cracking resistance and the crack stopping performance of the topboard.
The technical scheme adopted by the invention is as follows:
a method of constructing a topboard comprising the steps of:
s1: in the stage of ship section construction, dividing round steel into a middle welding area and slow welding areas at two ends along the axial direction of the round steel, wherein the welding areas of the round steel are symmetrically welded right above a topboard, and a non-penetration welding area is formed between the round steel and the upper end surface of the topboard;
s2: welding each side panel butt joint when the ship side sections are assembled or folded;
s3: the round steel is arranged above each side board butt joint, two ends of the round steel crossing the side board butt joints respectively form round steel butt joints with the end parts of the slow welding areas of the round steel on the corresponding sides, and each round steel butt joint is welded;
s4: and the slow welding area of the round steel and the round steel crossing the butt joint of the topsides are symmetrically welded right above the topsides.
Preferably, in step S2, after the butt seam of the topboard is welded, the upper end portion of the butt seam of the topboard is polished to be level with the upper end face of the topboard.
Preferably, step S3 includes step S31: and measuring the distance H between two round steels on two adjacent topsides strakes, and cutting allowance of the round steels crossing the butt joint of the topsides strakes according to the H.
Preferably, step S3 further includes step S32: and carrying out welding groove processing and polishing treatment on the joint area of the round steel.
Preferably, step S3 further includes step S33: and an isolated red copper plate is arranged between the right lower part of each round steel butt joint and the upper end surface of the topsides board.
Preferably, step S3 further includes step S34: and sequentially welding all the round steel butt joints.
When welding each round steel butt joint, after one side of the round steel butt joint is welded, the other side of the round steel butt joint is back-gouged and polished, and then welded.
As a preferred aspect, the method for constructing a topboard further includes step S5: and polishing the weld joint surface of the butt joint of the round steel so as to be flush with the outer surface of the round steel.
As a preferred solution, the method for constructing a topboard further comprises step S6: and after standing for preset time, carrying out nondestructive inspection on the welding seam of the butt joint of the round steel.
Preferably, the slow welding area of the round steel and the round steel crossing the butt joint of the topsides board are symmetrically welded right above the topsides board in a continuous welding mode.
The beneficial effects of the invention are as follows:
according to the method for constructing the topboard, the round steel is symmetrically welded right above the topboard, so that the round steel can resist the tensile stress of a ship, the risk of cracking of the topboard is reduced, and the cracking resistance of the topboard is improved. Because the non-penetration area is formed between the round steel and the upper end face of the topboard, a discontinuous structure is formed between the upper end of the topboard and the round steel, and even if the round steel is cracked due to the action of tensile stress, the non-penetration area can play a role in buffering the tensile stress, meanwhile, the crack can be prevented from extending to the topboard, and the crack stopping performance of the topboard is improved. In addition, the round steel of the butt joint of the cross-board top strake can enable the butt joint of the round steel and the butt joint of the board top strake to be staggered for a certain distance, so that the coplanarity of the butt joint of the board top strake and the butt joint of the round steel is avoided, and the cracking resistance of the board top strake is further improved.
Drawings
FIG. 1 is a schematic view of a partial construction of a prior art main deck and topsides;
FIG. 2 is a main flow chart of a method of constructing a topsides panel provided by an embodiment of the present invention;
FIG. 3 is a schematic view of an installation structure of a cross-deck butt joint round steel provided by an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a welded structure of round steel and a topsides panel provided by an embodiment of the present invention;
fig. 5 is a detailed flowchart of a method of constructing a topboard provided by an embodiment of the present invention.
The parts in the figures are named and numbered as follows:
10. a main deck; 1. a topboard; 11. butt joint of the gangway strake; 2. round steel; 21. welding grooves; 22. butt joint of round steel; 3. isolating the red copper plate.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
At present, the demand of cracking resistance is met as much as possible by mainly improving the material thickness, strength and toughness grade of the topsides board in the ship construction process. Because the upper end of the topsides board is of a single steel plate free edge structure, when the steel plate free edge structure is subjected to complex and large tensile stress, cracks are easy to generate from the top end of the steel plate free edge structure, and the cracking resistance is poor. And the topsides has poor crack-stopping performance, i.e., poor crack-stopping performance, as well as poor performance in preventing cracks from extending downward. Once the upper end of the portplate has developed a crack, the crack tends to extend downward, resulting in a serious accident.
In order to solve the above problems, as shown in fig. 2, the present embodiment further provides a method for constructing a topboard, which specifically includes the following steps:
s1: in the stage of ship section construction, dividing the round steel 2 into a middle welding area and slow welding areas at two ends along the axial direction of the round steel 2, symmetrically welding the welding areas of the round steel 2 right above the topsides strake 1, and forming a non-penetration welding area between the round steel 2 and the upper end surface of the topsides strake 1;
s2: each side panel butt joint 11 is welded when the ship side sections are assembled or closed;
s3: a round steel 2 is arranged above each side board butt joint 11, two ends of the round steel 2 of each side board butt joint 11 are respectively formed into round steel butt joints 22 with the end parts of the slow welding areas of the round steel 2 on the corresponding sides, and each round steel butt joint 22 is welded;
s4: the slow welding area of the round steel 2 and the round steel 2 of the butt joint 11 of the tranship strake are symmetrically welded right above the tranship strake 1.
As shown in fig. 3, the round steel 2 is symmetrically welded right above the topsides strake 1, so that the round steel 2 can resist the tensile stress of the ship, thereby reducing the risk of cracking of the topsides strake 1 and improving the cracking resistance of the topsides strake 1. In addition, the round steel 2 spanning the side-board butt joint 11 can enable the round steel butt joint 22 and the side-board butt joint 11 to be staggered by a certain distance, so that the side-board butt joint 11 and the round steel butt joint 22 are prevented from being coplanar, and the cracking resistance of the side-board 1 is further improved. As shown in fig. 4, when the welding of the topboard 1 and the round steel 2 is completed, the penetration region of the inside and outside corner welds between the round steel 2 and the topboard 1 does not enter the range directly above the topboard 1, so that a non-penetration region is formed between the round steel 2 and the upper end face of the topboard 1, that is, a discontinuous structure is formed between the upper end of the topboard 1 and the round steel 2. Even if the round steel 2 is cracked under the action of tensile stress, the non-penetration area of the round steel can buffer the tensile stress, and meanwhile, the crack can be prevented from extending to the topsides strake 1, so that the crack stopping performance of the topsides strake 1 is improved.
For ease of understanding, a method of constructing the topsides will now be described in detail with reference to fig. 3 to 5. In step S1, a section of round steel 2 is symmetrically welded directly above each of the topsides strake 1, and the axis of the round steel 2 is located on the center plane of the topsides strake 1 along the thickness direction thereof, and meanwhile, the gap between the upper end surface of the topsides strake 1 and the round steel 2 is 0 mm-2 mm, so that the gap between the upper end surface of the topsides strake 1 and the round steel 2 is prevented from being too large, and the penetration area of the inner and outer side corner welds of the round steel 2 and the topsides strake 1 is prevented from entering directly above the topsides strake 1.
In order to facilitate the welding of the round steel 2 on the side roof rail 1 and the round steel 2 of the butt joint 11 of the side roof rail, the round steel 2 on the side roof rail 1 is welded only to the welding area of the middle part, and a slow welding area of about 300mm to 500mm is reserved at both ends of the round steel 2.
In step S2, after the welding of the butt seam 11 of the gangway is completed, the upper end of the butt seam 11 of the gangway is polished to be level with the upper end surface of the gangway 1, so as to avoid the interference between the welding seam on the butt seam 11 of the gangway and the round steel 2 spanning the butt seam 11 of the gangway.
As shown in fig. 3 and 5, step S3 includes step S31: and measuring the distance H between two round steels 2 on two adjacent topsides strakes 1, and cutting allowance of the round steels 2 of the butt joint 11 of the transgangway strakes according to the H so that the root gap of the butt joint 22 of the round steels is 0-2 mm after the round steels 2 of the butt joint 11 of the transgangway strakes are installed, thereby facilitating welding construction between the adjacent round steels 2. The distance H of the embodiment is about 600 mm-1000 mm, so that the round steel butt joint 22 and the topboard butt joint 11 are staggered by 300 mm-500 mm, which is beneficial to improving the cracking resistance of the topboard 1.
It should be noted that step S3 further includes step S32: the welding groove 21 is processed and polished in the area of the round steel butt joint 22, which is beneficial to improving the welding quality between the round steels 2. Specifically, the welding groove 21 is a symmetrical double-sided groove, and the groove angle is 45 degrees.
Further, as shown in fig. 3 and 5, step S3 further includes step S33: an isolated copper plate 3 is placed between the right under each round steel butt joint 22 and the upper end face of the gangway 1. The isolating red copper plate 3 can play a role in isolating and rapidly radiating, and the welding seam of the round steel butt joint 22 is prevented from being contacted with the topsides strake 1. Of course, other material spacers may be selected, and only the weld joint of the round steel butt joint 22 and the gangway panel 1 may be separated, which is not shown here.
Specifically, an isolation red copper plate 3 is placed under each round steel butt joint 22, and the isolation red copper plate 3 is respectively attached to the topsides strake 1 and the round steel 2, so that a large gap is avoided. The thickness of the isolating red copper plate 3 is about 2 mm-3 mm, and the width is the same as the thickness of the topsides board 1.
As shown in fig. 5, step S3 further includes step S34: all the round steel butt joints 22 are welded in sequence to connect the round steel 2 welded to the topsides panel 1 and the round steel 2 welded to the topsides panel butt joint 11 by welding. Specifically, when each round steel butt seam 22 is welded, after one side of the round steel butt seam 22 is welded, the other side of the round steel butt seam 22 is back-gouged, polished, and then welded.
When one side of the butt seam 22 of the round steel is welded, the welding is performed from the middle to the outside and upward of the round steel 2. After one side is welded, the round steel is back-gouged and polished clean on the other side of the joint 22 by adopting a carbon arc gouging machine. And then welding construction of the other side of the round steel butt joint 22 is performed. The welding process needs to prevent the isolating red copper plate 3 from being welded through, and ensures that the isolating red copper plate 3 isolates the round steel butt joint 22 from the topsides strake 1. The welding process requires strict control of the welding quality to ensure complete penetration of the round steel butt joint 22 without welding defects.
After the welding of the butt seam 22 is completed, the slow welding area of the round steel 2 and the round steel 2 of the butt seam 11 of the tranship deck are symmetrically welded on the tranship deck 1. It should be noted that, the slow welding area of the round steel 2 and the round steel 2 spanning the butt joint 11 of the topsides board are symmetrically welded directly above the topsides board 1 in a continuous welding manner, so as to ensure that the fillet weld (the inner and outer side weld between the round steel 2 and the topsides board 1) directly below the butt joint 22 of the round steel has no welding joint, thereby reducing the welding defect and stress concentration of the fillet weld and improving the welding quality and the crack resistance.
As shown in fig. 5, the method of constructing a topboard further includes step S5: the surface of the weld joint of the round steel butt joint 22 is polished to be flush with the outer surface of the round steel 2, thereby avoiding the weld joint from being higher than the base material and preventing stress concentration at the weld joint and the base material.
Further, the method of constructing a topboard further includes step S6: after standing for a preset time, the weld joint of the butt joint 22 of the round steel is subjected to nondestructive inspection. Specifically, the round steel is placed for 24 hours after the welding of the butt joint 22 is finished, and then UT+MT nondestructive inspection is carried out on the round steel, so that no welding defect of the welding line of the round steel butt joint 22 is ensured. Of course, the static preset time length can be flexibly adjusted according to the actual working condition, and a proper flaw detection instrument is selected, so that the ut+mt nondestructive flaw detection is the prior art, and the specific flaw detection process is not repeated.
The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A method of constructing a topboard comprising the steps of:
s1: in the stage of ship section construction, dividing a round steel (2) into a middle welding area and slow welding areas at two ends along the axial direction of the round steel, wherein the welding areas of the round steel (2) are symmetrically welded right above a topboard (1), and a non-penetration welding area is formed between the round steel (2) and the upper end surface of the topboard (1);
s2: welding each side deck butt seam (11) when the ship side sections are assembled or closed;
s3: the round steel (2) is arranged above each side board butt joint (11), two ends of the round steel (2) crossing the side board butt joints (11) and the end parts of the slow welding areas of the round steel (2) at the corresponding sides form round steel butt joints (22), and each round steel butt joint (22) is welded;
s4: and the slow welding area of the round steel (2) and the round steel (2) crossing the butt joint (11) of the topsides are symmetrically welded right above the topsides (1).
2. The method of building a gangway as claimed in claim 1, wherein in step S2, after the gangway butt seam (11) is welded, the upper end of the gangway butt seam (11) is ground flat to be flush with the upper end face of the gangway (1).
3. The method of constructing a topboard according to claim 1, wherein step S3 includes step S31: and measuring the distance H between two round steels (2) on two adjacent portplates (1), and cutting allowance of the round steels (2) crossing the portplate butt joint (11) according to the H.
4. A method of constructing a topsides panel according to claim 3, wherein step S3 further comprises step S32: and (3) processing and polishing the welding groove (21) in the region of the round steel butt joint (22).
5. The method of constructing a topboard according to claim 4, wherein step S3 further comprises step S33: and an isolating red copper plate (3) is arranged between the right lower part of each round steel butt joint (22) and the upper end surface of the topsides column plate (1).
6. The method of constructing a topboard according to claim 5, wherein step S3 further comprises step S34: all of the round steel butt joints (22) are welded in sequence.
7. The method of constructing a gangway as set forth in claim 6, characterized in that, when each of the round steel butt joints (22) is welded, after one side of the round steel butt joint (22) is welded, the other side of the round steel butt joint (22) is back-ground and polished before being welded.
8. The method of constructing a topboard according to claim 1, further comprising step S5: and polishing the weld surface of the round steel butt joint (22) so as to be flush with the outer surface of the round steel (2).
9. The method of constructing a topboard according to claim 8, further comprising step S6: and after standing for a preset time, carrying out nondestructive inspection on the welding seam of the butt joint (22) of the round steel.
10. The method of building a gangway as claimed in any one of claims 1 to 9, characterized in that the slow welded zone of the round steel (2) and the round steel (2) crossing the gangway butt seam (11) are welded symmetrically by means of continuous welding directly above the gangway (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310106379.3A CN116002010A (en) | 2023-02-13 | 2023-02-13 | Construction method of topboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310106379.3A CN116002010A (en) | 2023-02-13 | 2023-02-13 | Construction method of topboard |
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| Publication Number | Publication Date |
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| CN116002010A true CN116002010A (en) | 2023-04-25 |
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| CN202310106379.3A Pending CN116002010A (en) | 2023-02-13 | 2023-02-13 | Construction method of topboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012020740A (en) * | 2006-06-23 | 2012-02-02 | Ihi Marine United Inc | Welded structure |
| CN202966578U (en) * | 2012-12-28 | 2013-06-05 | 福建省马尾造船股份有限公司 | Ocean engineering vessel |
| KR20130123909A (en) * | 2012-05-04 | 2013-11-13 | 현대중공업 주식회사 | Container ship |
| CN106314678A (en) * | 2016-08-29 | 2017-01-11 | 南通中远川崎船舶工程有限公司 | Structure for preventing brittle fracture of main hull |
| CN109625178A (en) * | 2018-12-20 | 2019-04-16 | 广东中远海运重工有限公司 | A kind of side of a ship wall construction of anti-deformation tearing |
| CN112916985A (en) * | 2021-01-28 | 2021-06-08 | 广州文冲船厂有限责任公司 | Welding method for steel pile trolley rail |
| WO2022265010A1 (en) * | 2021-06-15 | 2022-12-22 | Ｊｆｅスチール株式会社 | Weld structure body |
-
2023
- 2023-02-13 CN CN202310106379.3A patent/CN116002010A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012020740A (en) * | 2006-06-23 | 2012-02-02 | Ihi Marine United Inc | Welded structure |
| KR20130123909A (en) * | 2012-05-04 | 2013-11-13 | 현대중공업 주식회사 | Container ship |
| CN202966578U (en) * | 2012-12-28 | 2013-06-05 | 福建省马尾造船股份有限公司 | Ocean engineering vessel |
| CN106314678A (en) * | 2016-08-29 | 2017-01-11 | 南通中远川崎船舶工程有限公司 | Structure for preventing brittle fracture of main hull |
| CN109625178A (en) * | 2018-12-20 | 2019-04-16 | 广东中远海运重工有限公司 | A kind of side of a ship wall construction of anti-deformation tearing |
| CN112916985A (en) * | 2021-01-28 | 2021-06-08 | 广州文冲船厂有限责任公司 | Welding method for steel pile trolley rail |
| WO2022265010A1 (en) * | 2021-06-15 | 2022-12-22 | Ｊｆｅスチール株式会社 | Weld structure body |
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