CN112124518A - Control method for sectional reinforcement of double-phase stainless steel trough - Google Patents
Control method for sectional reinforcement of double-phase stainless steel trough Download PDFInfo
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- CN112124518A CN112124518A CN202010441108.XA CN202010441108A CN112124518A CN 112124518 A CN112124518 A CN 112124518A CN 202010441108 A CN202010441108 A CN 202010441108A CN 112124518 A CN112124518 A CN 112124518A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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Abstract
The invention discloses a control method for strengthening a duplex stainless steel trough type section, wherein the subsequent general assembly stage of the trough type section is a U-shaped general assembly, and the control method comprises the following steps: the groove-shaped sections are placed on a special jig frame for splicing and assembling; after the single-side welding is finished, a first reinforcement is arranged on the end surface of the stern and comprises two H-shaped steels which are barge to the midship from side mouths at two sides of the subsection to a preset distance; installing a second reinforcement for preventing the deformation of the lower opening of the subsequent subsection at the lower opening of the groove-shaped subsection, and welding the reinforcement part after the second reinforcement is installed; turning over the groove-shaped sections and placing the groove-shaped sections on a turning-over jig frame; and after the single-side welding is finished, a third reinforcement is arranged on the bow end face, and the third reinforcement comprises two H-shaped steels which are arranged from the side mouths on the two sides of the segment to the midship for a preset distance. The invention avoids the deformation during the segmental turning and the lifting and produces a large amount of repair workload by the implementation of the process method.
Description
Technical Field
The invention belongs to the field of ship construction, and particularly relates to a control method for double-phase stainless steel groove type sectional reinforcement.
Background
The increase in demand for chemicals in countries around the world has promoted the growth of the chemical shipping market. With the continuous development of chemical transportation industry, in order to meet the transportation requirements of import and export of chemical products, enterprises which can produce and transport chemical ships are searched by transportation companies of large petrochemical enterprises and transportation companies, and the enterprises are more and more favored by shipowners. Therefore, the method deeply develops the precision management of the stainless steel chemical tanker, masters the construction process technology of the stainless steel trough-type bulkhead, optimizes the product construction process, is an important project for increasing the guarantee of chemicals, improving the precision shipbuilding level and improving the enterprise competitiveness
The two-phase stainless steel cofferdam segment has longer time from segment construction to segment carrying, and relates to deformation in the transportation process, deformation in the lifting process and natural deformation of the segment after being exposed on a gantry for a long time. The phenomenon of poor precision generated in the process from sectional manufacturing to total assembling stage often occurs, the phenomenon of poor precision of the sections can be found in the subsequent process of total assembling and carrying, rework operation needs to be carried out to enable the sections to meet the precision requirement, and a large amount of time is needed for field assembly due to the characteristic that the stainless steel groove type can not be fired.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a control method for strengthening the double-phase stainless steel channel type sections.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method useful for duplex stainless steel channel section reinforcement, the subsequent overall assembly stage of the channel section being an overall assembly in the form of a U-shape, the control method comprising: the groove-shaped sections are placed on a special jig frame for splicing and assembling; after the single-side welding is finished, a first reinforcement is arranged on the end surface of the stern and comprises two H-shaped steels which are barge to the midship from side mouths at two sides of the subsection to a preset distance; installing a second reinforcement for preventing the deformation of the lower opening of the subsequent subsection at the lower opening of the groove-shaped subsection, and welding the reinforcement part after the second reinforcement is installed; turning over the groove-shaped sections and placing the groove-shaped sections on a turning-over jig frame; and after the single-side welding is finished, a third reinforcement is arranged on the bow end face, the third reinforcement comprises two H-shaped steels which are arranged from side mouths on two sides of the segment to a midship for a preset distance, the third reinforcement is opposite to the first reinforcement, and two ends of the second reinforcement are respectively connected with the first reinforcement and the third reinforcement.
Preferably, the control method further includes: and after the third reinforcement welding is finished, turning over the groove-shaped sections and placing the groove-shaped sections on the portal.
Preferably, before the first reinforcement and the third reinforcement are installed on the upper segment, a hanging ring is installed at the central position of the H-shaped steel panel.
Preferably, the control method includes: install first bracing on the cell type segmentation, the one end of first bracing is connected strengthen on the second, the other end of first bracing is connected on first enhancement.
Preferably, the control method includes: install the second bracing on the cell type segmentation, the one end of second bracing is connected on the cell type segmentation, the other end of second bracing is connected on first enhancement.
Preferably, the predetermined distance is 800-.
Preferably, the predetermined distance is 1100 mm.
Compared with the prior art, the invention has the beneficial effects that: after the trough-shaped sections are installed and reinforced, the turning-over and hoisting deformation of the sections are effectively prevented, the secondary operation of the subsequent process is avoided, and the precision control of the section and the total assembly stage is effectively improved; therefore, finite element analysis is carried out on the reinforced groove-shaped part through a scientific and effective means, the strength of the reinforcing structure can prevent deformation during turning over and lifting, and the efficiency is improved for subsequent carrying.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an assembly process of slot type segmentation.
Fig. 2 is a first schematic strengthening view of the stern end face.
Fig. 3 is a schematic view of the first diagonal brace and the second diagonal brace.
FIG. 4 is a side view of the segment after reinforcement is installed on both sides.
Fig. 5 is a schematic diagram of the assembly of the sections placed on the gantry.
FIG. 6 is a schematic diagram of a finite element analysis after segment installation reinforcement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 6, this embodiment provides a control method for strengthening a duplex stainless steel trough section, wherein the subsequent overall assembly stage of the trough section 1 is an overall assembly in a U-shaped form, and the control method comprises: the groove-shaped sections 1 are placed on a special jig frame for splicing and assembling; after the single-side welding is finished, a first reinforcement 2 is arranged on the end surface of the stern, and the first reinforcement 2 comprises two H-shaped steels which are barge to a midship from side mouths on two sides of the subsection to a preset distance; installing a second reinforcement 3 for preventing the deformation of the lower opening of the subsequent subsection at the lower opening of the groove-shaped subsection 1, and welding the reinforcement part after the second reinforcement 3 is installed; turning over the groove-shaped sections 1 and placing the groove-shaped sections on a turning-over jig frame; and after the single-side welding is finished, a third reinforcement 4 is arranged on the bow end face, the third reinforcement 4 comprises two H-shaped steels which are arranged from side mouths on two sides of the segment to a midship for a preset distance, the third reinforcement 4 is opposite to the first reinforcement 2, and two ends of the second reinforcement 3 are respectively connected with the first reinforcement 2 and the third reinforcement 4.
The control method further comprises the following steps: and after the third reinforcement 4 is welded, turning over the groove-shaped section 1 and placing the groove-shaped section on the portal 5.
Before the first reinforcement 2 and the third reinforcement 4 are installed on the subsection, a lifting ring 6 is installed at the center of the H-shaped steel panel.
The control method comprises the following steps: install first bracing 7 on the cell type segmentation 1, the one end of first bracing 7 is connected on second is strengthened 3, and the other end of first bracing 7 is connected on first enhancement 2.
The control method comprises the following steps: install second bracing 8 on the cell type segmentation 1, the one end of second bracing 8 is connected on cell type segmentation 1, and the other end of second bracing 8 is connected on first enhancement 2.
The predetermined distance is 800-.
The predetermined distance is 1100 mm.
In another embodiment, the groove-shaped segments (C segments) are placed in a special jig frame for splicing and assembling, taking the segment with the half width of the C segment of 11 meters as an example, the segments are spliced into transverse bulkhead segments by 7 omega-shaped grooves, and after single-side welding is finished, reinforcement is installed on the end surface of a stern, and the transverse bulkhead segments are assembled and reinforced from side ports at two sides of the segments to a midship; because the subsequent total assembly stage of the segments is the total assembly in a U-shaped form, the lower opening of the groove-shaped segment needs to be installed and reinforced, the deformation of the lower opening of the subsequent segments is prevented, and the welding operation of the reinforced part is carried out after the reinforced installation.
Considering that the omega-shaped groove part normally arrives at a factory, the subsection is horizontally built on a special jig frame for the groove-shaped groove by taking a large cabin surface towards the bow end as a base surface, the subsection is laid on the special jig frame for welding after being turned over, and the reinforcing installation work is completed before the subsection is turned over.
Considering the thickness change of the section in the ship depth direction, the thickness factor of the moulding bed should be considered according to the model value of the moulding bed before and after turning over, and in addition, the arrangement of the moulding bed is paid attention to when the special moulding bed is designed on the middle transverse bulkhead because the thicknesses of the two ends are different from the middle.
The segmented heading end surface is a vertical plane.
The cofferdam sectional construction sequence:
laying a plate on a special jig frame → measuring before welding → installing a suspension ring → installing and reinforcing → turning over the special jig frame → welding → measuring after welding → installing and reinforcing → taking off the jig and taking the bow end as a base surface, and installing a portal frame → pre-installing → submitting to east and inspection and acceptance of the ship.
The main purpose of strengthening the 1100mm refuted before turning over is to avoid a platform (outfitting) on a cofferdam subsection in a strengthening area and smoothly implement subsequent assembly in a total assembly stage, so that enough construction space is provided for constructors.
The groove-shaped section is subjected to precision completion before welding, namely, after one-side welding is completed, turning-over operation is carried out, meanwhile, the section is placed on a turning-over jig frame, and welding operation after turning over is carried out; the single side of the section is welded and then the side opening is reinforced, and two sides of the stern end surface of the section C are reinforced by being arranged towards the 1100mm position of the midship on the side.
And after the groove-shaped sections are turned over and welded, the positions of the groove-shaped sections are consistent with the positions of the installation reinforcements before turning over, the groove-shaped sections are barge to 1100mm from the side mouths of the sections, the groove-shaped sections are installed and reinforced, and welding operation is performed.
After the whole groove-shaped sections are welded, turning over the sections to normal positions and upper door frames.
After the trough-shaped sections are installed and reinforced, the turning-over and hoisting deformation of the sections are effectively prevented, the secondary operation of the subsequent process is avoided, and the precision control of the section and the total assembly stage is effectively improved; therefore, finite element analysis is carried out on the reinforced groove-shaped part through a scientific and effective means, the strength of the reinforcing structure can prevent deformation during turning over and lifting, and the efficiency is improved for subsequent carrying.
The specific implementation steps of the cofferdam turn-over stage are as follows: firstly, taking a fore end face as a base plane of a stainless steel workshop which is taken out in a segmenting mode for the first time, and lifting by adopting 75/32t and 32/10t traveling vehicles; secondly, turning over the sections for the first time by vertically and longitudinally turning over 180 degrees, and then taking the end surface of the stern as a base surface upper door frame; thirdly, taking the stern end surface as a base surface in the stainless steel workshop for the second segmented entering/exiting, and lifting by adopting 75/32t and 32/10t traveling vehicles; fourthly, turning over for the second time in a subsection mode, namely vertically and longitudinally turning over for 180 degrees, and taking the fore end face as a base face upper door frame after turning over; fifthly, turning over 90 degrees longitudinally left and right in a sectional and total assembly mode.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (7)
1. A control method for strengthening a duplex stainless steel trough type section is characterized in that a subsequent general assembly stage of the trough type section is a general assembly in a U-shaped form, and the control method comprises the following steps:
the groove-shaped sections are placed on a special jig frame for splicing and assembling;
after the single-side welding is finished, a first reinforcement is arranged on the end surface of the stern and comprises two H-shaped steels which are barge to the midship from side mouths at two sides of the subsection to a preset distance;
installing a second reinforcement for preventing the deformation of the lower opening of the subsequent subsection at the lower opening of the groove-shaped subsection, and welding the reinforcement part after the second reinforcement is installed;
turning over the groove-shaped sections and placing the groove-shaped sections on a turning-over jig frame;
and after the single-side welding is finished, a third reinforcement is arranged on the bow end face, the third reinforcement comprises two H-shaped steels which are arranged from side mouths on two sides of the segment to a midship for a preset distance, the third reinforcement is opposite to the first reinforcement, and two ends of the second reinforcement are respectively connected with the first reinforcement and the third reinforcement.
2. The control method for duplex stainless steel channel section reinforcement according to claim 1, further comprising:
and after the third reinforcement welding is finished, turning over the groove-shaped sections and placing the groove-shaped sections on the portal.
3. The control method for dual phase stainless steel channel section reinforcement according to claim 1, wherein the lifting ring is installed at a central position of the H-shaped steel panel before the first reinforcement and the third reinforcement are installed on the section.
4. The control method for duplex stainless steel channel section reinforcement according to claim 1, characterized in that the control method comprises:
install first bracing on the cell type segmentation, the one end of first bracing is connected strengthen on the second, the other end of first bracing is connected on first enhancement.
5. The control method for duplex stainless steel channel section reinforcement according to claim 1, characterized in that the control method comprises:
install the second bracing on the cell type segmentation, the one end of second bracing is connected on the cell type segmentation, the other end of second bracing is connected on first enhancement.
6. The control method for the sectional reinforcement of the duplex stainless steel channel type according to claim 1, wherein the predetermined distance is 800-2000 mm.
7. A control method applicable to duplex stainless steel channel section strengthening according to claim 6, characterized in that the predetermined distance is 1100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010441108.XA CN112124518A (en) | 2020-05-22 | 2020-05-22 | Control method for sectional reinforcement of double-phase stainless steel trough |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010441108.XA CN112124518A (en) | 2020-05-22 | 2020-05-22 | Control method for sectional reinforcement of double-phase stainless steel trough |
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| CN112124518A true CN112124518A (en) | 2020-12-25 |
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| CN202010441108.XA Pending CN112124518A (en) | 2020-05-22 | 2020-05-22 | Control method for sectional reinforcement of double-phase stainless steel trough |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877688A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Hoisting and reinforcing method for biphase stainless steel chemical ship board side transverse bulkhead segment |
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| CN107944198A (en) * | 2017-12-22 | 2018-04-20 | 沪东中华造船(集团)有限公司 | A kind of reinforcement method of two phase stainless steel groove profile compartment |
| CN109319045A (en) * | 2018-10-10 | 2019-02-12 | 上海江南长兴造船有限责任公司 | A kind of method of construction of two phase stainless steel chemical tanker compartment intermediate products |
| CN109533194A (en) * | 2018-10-23 | 2019-03-29 | 上海江南长兴造船有限责任公司 | A kind of reinforcement method for two phase stainless steel chemical tanker transverse bulkhead medial section |
| CN109533191A (en) * | 2018-10-23 | 2019-03-29 | 上海江南长兴造船有限责任公司 | A kind of hanging method for two phase stainless steel chemical tanker transverse bulkhead medial section |
| CN110877688A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Hoisting and reinforcing method for biphase stainless steel chemical ship board side transverse bulkhead segment |
| CN110877691A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Method for strengthening U-shaped block turning of chemical tanker |
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2020
- 2020-05-22 CN CN202010441108.XA patent/CN112124518A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107944198A (en) * | 2017-12-22 | 2018-04-20 | 沪东中华造船(集团)有限公司 | A kind of reinforcement method of two phase stainless steel groove profile compartment |
| CN109319045A (en) * | 2018-10-10 | 2019-02-12 | 上海江南长兴造船有限责任公司 | A kind of method of construction of two phase stainless steel chemical tanker compartment intermediate products |
| CN109533194A (en) * | 2018-10-23 | 2019-03-29 | 上海江南长兴造船有限责任公司 | A kind of reinforcement method for two phase stainless steel chemical tanker transverse bulkhead medial section |
| CN109533191A (en) * | 2018-10-23 | 2019-03-29 | 上海江南长兴造船有限责任公司 | A kind of hanging method for two phase stainless steel chemical tanker transverse bulkhead medial section |
| CN110877688A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Hoisting and reinforcing method for biphase stainless steel chemical ship board side transverse bulkhead segment |
| CN110877691A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Method for strengthening U-shaped block turning of chemical tanker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877688A (en) * | 2019-11-15 | 2020-03-13 | 沪东中华造船(集团)有限公司 | Hoisting and reinforcing method for biphase stainless steel chemical ship board side transverse bulkhead segment |
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Application publication date: 20201225 |