CN114654173A - Side-lying assembling method for main beam of movable formwork of bridge girder erection machine - Google Patents
Side-lying assembling method for main beam of movable formwork of bridge girder erection machine Download PDFInfo
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- CN114654173A CN114654173A CN202210361292.6A CN202210361292A CN114654173A CN 114654173 A CN114654173 A CN 114654173A CN 202210361292 A CN202210361292 A CN 202210361292A CN 114654173 A CN114654173 A CN 114654173A
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- web
- wing plate
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- plate
- welding
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- 238000009415 formwork Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of manufacturing of large box girders of steel structure non-standard parts, in particular to a side-lying assembling method of a bridge girder erection machine movable formwork main girder, which comprises the following steps: s1, preparing materials; s2, preparing a web member of the wing plate; s3, fixing the member web II with the member wing plate I and the member wing plate II; s4, fixing a first member web; s5, correcting the positions of the components; s6, welding and fixing; and S7, cutting a manhole and leveling. The side-lying assembling method can meet the assembling and manufacturing requirements of most large box girders, can fully utilize existing conditions on site, fully reduce the operation height of the whole girder manufacturing, ensure the manufacturing process of the whole box girder to be safer, ensure that the welding and the fixing of partial positions are more convenient, save labor force and reduce labor cost; the safety index is improved, the construction time is shortened, and a powerful guarantee is provided for improving the overall construction efficiency of the movable formwork of the bridge girder erection machine.
Description
Technical Field
The invention relates to the field of manufacturing of large box girders of steel-structure nonstandard parts, in particular to a side-lying assembling method for a main girder of a movable formwork of a bridge girder erection machine.
Background
The movable formwork bridge girder erection machine is widely applied to large bridge construction in China at present, wherein a large box girder is a framework of the movable formwork bridge girder erection machine, and is a step which occupies the most time and is the most complicated in operation procedures in a manufacturing period of the movable formwork bridge girder erection machine, and is also a step with the highest risk coefficient. The improved assembly mode of the box girder directly determines the manufacturing efficiency and the safety index in the manufacturing of the whole set of die carrier, shortens the manufacturing time of the box girder and has outstanding practical significance on production practice and production benefits.
Disclosure of Invention
The invention aims to provide a side-lying assembling method for a main beam of a movable formwork of a bridge girder erection machine, which has the advantages of low operation height, high operation efficiency and low labor cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: a girder side-lying assembling method for a movable formwork of a bridge girder erection machine comprises the following steps:
s1, preparing materials: cutting, blanking and splicing all parts to assemble a component according to the decomposition of a drawing;
s2, preparing a web component of the wing plate: leveling wing plates and web plates, eliminating partial welding stress by using hammering and fire baking modes, drawing lines and lofting on the wing plates and the web plates according to a drawing, and fixing reinforcing ribs at specified positions to form a first wing plate member, a second wing plate member, a first web plate member and a second web plate member for later use;
s3, fixing the member web II with the first wing plate and the second wing plate: leveling the assembly platform by using a leveling instrument, lifting the web plate onto the assembly platform, vertically lifting the wing plate I and assembling the web plate II, adjusting by using a chain block, and supporting and fixing the wing plate I and the web plate II after being vertical by using a lead weight or other measuring tools in a matched manner, wherein the assembly mode of the wing plate II is the same as that of the wing plate I;
s4, fixing the first member web: horizontally hanging a reinforcing rib of the member web downwards on the member assembled in the step S3, and adjusting and fixing the position of the member web;
and S5, correcting the positions of the components: the diagonal line of the butt joint of the web plate and the wing plate is adjusted by a chain block, so that the wing plate at the butt joint is ensured to be vertical to the web plate;
s6, welding: during welding, the welding is carried out intermittently and then continuously so as to reduce welding deformation;
s7, cutting a manhole and leveling, drawing lines on the manhole, cutting the manhole by using an automatic cutting machine, welding reinforcing ribs of the manhole, and adjusting the flatness of the web by using a fire baking mode after welding.
The invention has the following beneficial effects: the side-lying assembling method can meet the assembling and manufacturing requirements of most large box girders, can fully utilize existing conditions on site, fully reduce the operation height of the whole girder manufacturing, ensure the manufacturing process of the whole box girder to be safer, ensure that the welding and the fixing of partial positions are more convenient, save labor force and reduce labor cost; the manufacturing of the large box girder is convenient and efficient, the labor cost is reduced, the safety index is improved, the construction time is shortened, and the strong guarantee is provided for improving the overall construction efficiency of the movable formwork of the bridge girder erection machine.
Drawings
Fig. 1 is a structural schematic diagram of the assembled main beam of the mobile formwork of the invention.
Fig. 2 is a schematic structural view of a first wing plate and a second wing plate of the present invention.
Figure 3 is a schematic structural view of a first web and a second web before cutting a manhole according to the present invention.
Fig. 4 is a schematic view of the assembled structure of the first wing plate and the second web plate before the manhole is cut.
In the figure, 1 is a first wing plate, 2 is a second wing plate, 3 is a first web plate, 4 is a second web plate.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.
A girder side-lying assembling method of a movable formwork of a bridge girder erection machine is carried out according to the following steps:
s1, preparing materials: and (4) according to the decomposition of a drawing, cutting, blanking and splicing all parts to assemble the component.
S2, preparing a web component of the wing plate: leveling wing plates and web plates, eliminating partial welding stress in a hammering and baking mode, drawing lines and lofting on the wing plates and the web plates according to a drawing, and fixing reinforcing ribs at specified positions to form a first wing plate 1, a second wing plate 2, a first web plate 3 and a second web plate 4 for later use; the structures of the first wing plate 1 and the second wing plate 2 are shown in figure 2, and the structures of the first web plate 3 and the second web plate 4 are shown in figure 3. The strengthening rib is firstly in order to increase the anti amount of deflection of panel when the equipment, secondly in order to facilitate for later stage assembly concatenation.
S3, fixing the component web plate II 4 with the wing plate I1 and the wing plate II 2: the assembly platform is leveled by using a level gauge, the web plate II 4 is flatly hung on the assembly platform, the wing plate I1 is vertically lifted to be assembled with the web plate II 4, the adjustment is carried out by using a chain block, a lead weight or other measuring tools are matched to ensure that the wing plate I1 and the web plate II 4 are vertical and then supported and fixed, and the structure formed by assembling the wing plate I1 and the web plate II 4 is shown in figure 4. The assembly mode of the second wing plate 2 and the second web plate 4 is the same as that of the first wing plate 1.
S4, fixing the first component web 3: and (3) horizontally hanging the reinforcing ribs of the first component web 3 downwards onto the assembled component in the step S3, and adjusting and fixing the position of the reinforcing ribs, as shown in figure 1.
And S5, correcting the positions of the components: the diagonal line of the butt joint of the web plate and the wing plate is adjusted by a chain block, and the verticality of the wing plate and the web plate at the butt joint is ensured.
S6, welding: when welding, the welding is carried out intermittently and then continuously, so as to reduce welding deformation.
S7, cutting a manhole and leveling, drawing lines on the manhole, cutting the manhole by using an automatic cutting machine, welding reinforcing ribs of the manhole, and adjusting the flatness of the web by using a fire baking mode after welding. The movable die carrier box girder is assembled in a side-lying mode, the operation height is reduced, and the safety index of operation is improved.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (1)
1. A girder side-lying assembling method of a movable formwork of a bridge girder erection machine is characterized by comprising the following steps:
s1, preparing materials: cutting, blanking and splicing all parts to assemble a component according to the decomposition of a drawing;
s2, preparing a web member of the wing plate: leveling wing plates and web plates, eliminating partial welding stress in a hammering and baking mode, drawing lines and lofting on the wing plates and the web plates according to a drawing, and fixing reinforcing ribs at specified positions to form a first wing plate member, a second wing plate member, a first web plate member and a second web plate member for later use;
s3, fixing the member web II with the first wing plate and the second wing plate: leveling the assembly platform by using a leveling instrument, lifting the web plate onto the assembly platform, vertically lifting the wing plate I and assembling the web plate II, adjusting by using a chain block, and supporting and fixing the wing plate I and the web plate II after being vertical by using a lead weight or other measuring tools in a matched manner, wherein the assembly mode of the wing plate II is the same as that of the wing plate I;
s4, fixing the first member web: horizontally hanging a reinforcing rib of the member web downwards on the member assembled in the step S3, and adjusting and fixing the position of the member web;
and S5, correcting the positions of the components: the diagonal line of the joint of the web plate and the wing plate is adjusted by using a chain block to ensure that the wing plate at the joint is vertical to the web plate;
s6, welding: during welding, the welding is carried out intermittently and then continuously so as to reduce welding deformation;
s7, cutting a manhole and leveling, drawing lines on the manhole, cutting the manhole by using an automatic cutting machine, welding reinforcing ribs of the manhole, and adjusting the flatness of the web by using a fire baking mode after welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361292.6A CN114654173A (en) | 2022-04-07 | 2022-04-07 | Side-lying assembling method for main beam of movable formwork of bridge girder erection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361292.6A CN114654173A (en) | 2022-04-07 | 2022-04-07 | Side-lying assembling method for main beam of movable formwork of bridge girder erection machine |
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| Publication Number | Publication Date |
|---|---|
| CN114654173A true CN114654173A (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210361292.6A Pending CN114654173A (en) | 2022-04-07 | 2022-04-07 | Side-lying assembling method for main beam of movable formwork of bridge girder erection machine |
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| CN (1) | CN114654173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114986007A (en) * | 2022-07-08 | 2022-09-02 | 山东锦城钢结构有限责任公司 | Complicated giant ribbed thick plate steel box girder device and machining method thereof |
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2022
- 2022-04-07 CN CN202210361292.6A patent/CN114654173A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114986007A (en) * | 2022-07-08 | 2022-09-02 | 山东锦城钢结构有限责任公司 | Complicated giant ribbed thick plate steel box girder device and machining method thereof |
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Application publication date: 20220624 |
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| RJ01 | Rejection of invention patent application after publication |