CN115070245A - Manufacturing method of UHPC steel box composite beam - Google Patents
Manufacturing method of UHPC steel box composite beam Download PDFInfo
- Publication number
- CN115070245A CN115070245A CN202210719166.3A CN202210719166A CN115070245A CN 115070245 A CN115070245 A CN 115070245A CN 202210719166 A CN202210719166 A CN 202210719166A CN 115070245 A CN115070245 A CN 115070245A
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- welding
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- bridge deck
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 53
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 4
- 238000003908 quality control method Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for manufacturing a UHPC steel box composite beam, which mainly comprises the following steps: manufacturing a plate unit; manufacturing the tuyere block body; building a jig assembly; fourthly, positioning a bottom plate unit; fifthly, combining the partition boards and the web plate units; sixthly, forming a tuyere block body; a hobby UHPC bridge deck block. The method for assembling the UHPC bridge deck block bodies and the tuyere block bodies in the block mode is favorable for providing the manufacturing precision of the steel box composite beam, ensures the sectional dimension precision of the steel box composite beam, ensures the welding quality of the steel box composite beam and the welding deformation control of the bridge deck and the perforated steel plate in the UHPC unit, and improves the overall quality of the UHPC steel box composite beam.
Description
Technical Field
The invention relates to the technical field of manufacturing of steel box girders of suspension bridges, in particular to a manufacturing method of a UHPC steel box composite girder.
Background
The manufacturing technology of the steel box composite beam is an important technology in the bridge structure industry. The main bridge steel box girder top plate comprises an outer web upper flange, a middle web upper flange and a diaphragm plate upper flange top plate. The cable beam anchoring of the combined beam adopts a steel anchor box mode, and the anchor box is installed on the outer side of a web plate of the main beam and is welded with the web plate into a whole. The UHPC bridge deck of combination beam comprises bridge floor bottom plate and trompil steel sheet, and the thick 8mm, 10mm of board, along bridge to length reach 10m, the width is only 90mm, and steel sheet thickness is thin, the width is narrow, length is long, and the welding deformation control degree of difficulty is big, if do not take measures to control the manufacturing accuracy, the steel case roof beam will be unable accurate positioning to assemble.
The steel box girder assembled by the prior art is basically assembled according to the sequence of bottom web separation and top, and finally an UHPC bridge floor bottom plate perforated steel plate is welded after a box body is formed, so that the welding deformation cannot be controlled, and the assembling quality cannot be accurately ensured.
Disclosure of Invention
Aiming at the technical problem, the invention provides a manufacturing method of a UHPC steel box composite beam.
The technical scheme of the invention is as follows:
a manufacturing method of a UHPC steel box composite beam comprises the following steps:
s1: manufacturing a bottom plate unit, a top plate unit, a partition plate unit and a web plate unit of the steel box composite beam, and achieving the requirement of quality control by aiming at the overall dimension machining precision control of parts and the assembly welding precision control of each unit element;
s2: assembling the manufactured bottom plate unit, the partition plate unit, the web plate unit and the top plate unit into a tuyere block body, controlling the generation of welding deformation, and ensuring the welding quality by adopting horizontal welding;
s3: assembling a jig frame on the basis of a preset measurement and control net to form a linear shape, and assembling multiple sections of the steel box combination beam on the assembling jig frame;
s4: sequentially positioning and assembling the bottom plate units from the middle to two sides by taking the horizontal base line and the vertical base line as a reference, and controlling welding deformation and flatness by adopting a symmetrical welding method;
s5: sequentially assembling and welding the web plate units, the partition plate units, the web plate units and the partition plate units … at intervals from one side, and controlling the longitudinal positioning and the verticality;
s6: splicing the spliced tuyere blocks to two sides of a steel box girder box body, and performing integral assembly welding after adjusting the positions;
s7: and placing a plurality of UHPC bridge deck boards on a platform, respectively assembling and welding the UHPC bridge deck boards and sectionally assembling and welding perforated steel plates to form a plurality of bridge deck board blocks, trimming and checking a bridge deck block, hoisting the bridge deck block to the top surface of the steel box composite beam after the bridge deck block is qualified, assembling and welding to adjust the flatness, and sequentially assembling and welding the rest bridge deck board blocks.
In the above technical solution, the diagonal size of the cross section of the tuyere block and the block distortion are controlled in step S2 so as not to accumulate errors when assembling the steel box girder.
In the technical scheme, step S7 adopts symmetrical welding, adjustment is carried out while welding, welding deformation is controlled, and temporary constraint components are adopted to guarantee assembly precision and control the flatness of the bridge deck.
Compared with the prior art, the invention has the following beneficial effects:
the overall shape and geometric dimension of the steel box composite beam are well controlled, and particularly the welding deformation and dimensional precision control of the UHPC bridge deck are improved.
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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a method for manufacturing a steel box composite beam according to an embodiment of the present application;
FIG. 2 is a schematic view of a UHPC welded bridge panel assembly process according to an embodiment of the present application;
FIG. 3 is a schematic diagram of the units of a UHPC welded bridge panel according to the present application;
fig. 4 is a schematic structural view of the bridge deck block of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention.
As shown in the attached drawings 1-2, the invention provides a manufacturing method of a UHPC steel box composite beam, which comprises the following steps:
s1: manufacturing a bottom plate unit, a top plate unit, a partition plate unit and a web plate unit of the steel box composite beam, achieving the requirement of quality control by controlling the processing precision of the overall dimension of parts and the assembly welding precision of each unit element, assembling and welding the plate units on a jig frame platform, assembling and welding a ribbed plate at a reference end, and ensuring the control of perpendicularity and position deviation;
s2: manufacturing a tuyere block body: the tuyere bottom plate unit, the partition plate unit, the web plate unit and the top plate unit are assembled into a whole to form a tuyere block body, the generation of welding deformation is controlled, and the welding quality is ensured by adopting horizontal welding; the diagonal size of the section of the tuyere block body, the block body distortion and the like are controlled, and errors cannot be accumulated when the steel box girder is assembled.
S3: assembling a jig frame on the basis of a preset measurement and control net to form a linear shape, and assembling multiple sections of the steel box combination beam on the assembling jig frame;
in order to reduce the welding deformation of the steel box girder and ensure the geometric dimension and the line shape of the appearance, the steel box girder needs to be assembled on an assembly jig frame. The foundation of the assembled jig frame requires enough bearing capacity, the whole structure of the jig frame needs enough rigidity and stability, the assembling requirement of at least 3 sections is met, a long-line method integral assembling scheme which is formed by continuously matching and assembling multiple sections and is completed simultaneously is adopted, and the linear manufacturing of the assembled jig frame and the section assembling of the steel box girder take a preset measurement and control net as a reference so as to ensure the linear assembling of the steel box girder and the accuracy of a splicing opening.
S4: sequentially positioning and assembling the bottom plate units from the middle to two sides by taking the horizontal base line and the vertical base line as reference, and controlling welding deformation and flatness by adopting a symmetrical welding method;
s5: sequentially assembling and welding the web plate units, the partition plate units, the web plate units and the partition plate units … at intervals from one side, and controlling the longitudinal positioning and the verticality;
s6: splicing the spliced tuyere blocks to two sides of a steel box girder box body, and performing integral assembly welding after adjusting the positions;
s7: and placing a plurality of UHPC bridge deck plates on a platform, respectively assembling and welding the UHPC bridge deck plates and sectionally assembling and welding perforated steel plates to form a plurality of bridge deck plate blocks, firstly trimming one bridge deck plate block, checking to be qualified, hoisting the bridge deck plate block to the top surface of the steel box composite beam, assembling and welding to adjust the flatness, and then sequentially assembling and welding the rest bridge deck plate blocks.
In the above technical solution, the step S7 employs symmetric welding, adjustment while welding, welding deformation control, and temporary constraint members to ensure assembly accuracy and control the flatness of the bridge deck.
Fig. 3 is a schematic diagram of each unit of the welded bridge panel of the present application, in which a bottom plate unit, a top plate unit, a partition plate unit, a web plate unit, a tuyere block, and a front panel block are respectively identified, and the complete UHPC steel box composite beam is formed by the above-mentioned manufacturing method.
As shown in fig. 4, which is a schematic diagram of a bridge deck block of the present application, the bridge deck block is composed of a bridge deck and a perforated steel plate, and is assembled with a main steel box girder after the bridge deck and the perforated steel plate are assembled into the bridge deck block according to a sequential interval sequence, that is, the bridge deck block is assembled in a block-type and modularized manner.
The main bridge steel box girder top plate comprises an outer web upper flange, a middle web upper flange and a diaphragm plate upper flange top plate. Wherein the width of the upper flange of the outer web is 1646 mm; the width of the upper flange of the middle web plate is 500 mm; the width of the upper flange of the diaphragm plate along the bridge direction is 600 mm; the thickness is 20 mm. The bottom plate of this application includes horizontal bottom plate and inclined bottom plate two parts, and the bottom plate adopts U type stiffening rib to put more energy into, and basic interval 800 mm. The thickness of the stiffening rib is 6-8 mm. The thickness of the outer web is 32 mm. At the bridge tower and the steel-concrete combined section, the middle partition plate is in a solid-width mode, and the plate thickness is 24 mm, 20mm and 16 mm. The middle partition plates of the rest beam sections are in a truss type. The diaphragm plates are all integral diaphragm plates. The standard spacing of the diaphragm plates is 3.5 m. The cable beam anchoring of the combined beam adopts a steel anchor box mode, and the anchor box is installed on the outer side of a web plate of the main beam and is welded with the web plate into a whole. The UHPC bridge deck is divided into a factory cast-in-place part and a construction site cast-in-place part, and both adopt UHPC R160 concrete. The beam sections of the cast-in-place part of the composite beam bridge deck slab factory are divided into seven types A-G according to the size of the bridge deck slab, and the number of the beam sections is 91.
The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent; the foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (3)
1. A manufacturing method of a UHPC steel box composite beam is characterized by comprising the following steps:
s1: manufacturing a bottom plate unit, a top plate unit, a partition plate unit and a web plate unit of the steel box composite beam, and achieving the requirement of quality control by controlling the processing precision of the overall dimension of the parts and the assembly welding precision of each unit;
s2: splicing the manufactured bottom plate unit, the manufactured partition plate unit, the manufactured web plate unit and the manufactured top plate unit into a tuyere block body, controlling the generation of welding deformation, and ensuring the welding quality by adopting horizontal welding;
s3: assembling a jig frame on the basis of a preset measurement and control net to form a linear shape, and assembling multiple sections of the steel box combination beam on the assembling jig frame;
s4: sequentially positioning and assembling the bottom plate units from the middle to two sides by taking the horizontal base line and the vertical base line as a reference, and controlling welding deformation and flatness by adopting a symmetrical welding method;
s5: sequentially assembling and welding the web plate units, the partition plate units, the web plate units and the partition plate units … at intervals from one side, and controlling the longitudinal positioning and the verticality;
s6: splicing the spliced tuyere blocks to two sides of a steel box girder box body, and performing integral assembly welding after adjusting the positions;
s7: and placing a plurality of UHPC bridge deck boards on a platform, respectively assembling and welding the UHPC bridge deck boards and sectionally assembling and welding perforated steel plates to form a plurality of bridge deck board blocks, trimming and checking a bridge deck block, hoisting the bridge deck block to the top surface of the steel box composite beam after the bridge deck block is qualified, assembling and welding to adjust the flatness, and sequentially assembling and welding the rest bridge deck board blocks.
2. The method for manufacturing a UHPC steel box composite girder according to claim 1, wherein the diagonal size of the cross section of the tuyere block and the block distortion are controlled so as not to accumulate errors when the steel box girder is assembled in step S2.
3. The method for manufacturing the UHPC steel box composite beam as recited in claim 1, wherein the step S7 adopts symmetrical welding, edge welding and edge adjustment, welding deformation control, temporary constraint components to ensure assembly accuracy and control the flatness of the bridge deck slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210719166.3A CN115070245B (en) | 2022-06-23 | 2022-06-23 | Manufacturing method of UHPC steel box composite beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210719166.3A CN115070245B (en) | 2022-06-23 | 2022-06-23 | Manufacturing method of UHPC steel box composite beam |
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| CN115070245A true CN115070245A (en) | 2022-09-20 |
| CN115070245B CN115070245B (en) | 2024-05-24 |
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| CN202210719166.3A Active CN115070245B (en) | 2022-06-23 | 2022-06-23 | Manufacturing method of UHPC steel box composite beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115476066A (en) * | 2022-10-08 | 2022-12-16 | 江苏京沪重工有限公司 | Positive and negative manufacturing process of assembled and superposed twin-tire approach bridge steel box girder |
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| JPH0665906A (en) * | 1992-08-20 | 1994-03-08 | Nkk Corp | Manufacture of box girder for bridge |
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2022
- 2022-06-23 CN CN202210719166.3A patent/CN115070245B/en active Active
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| CN112605548A (en) * | 2020-12-30 | 2021-04-06 | 大连中车大齐车辆有限公司 | Assembly welding method for box-type center sill of railway wagon |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115476066A (en) * | 2022-10-08 | 2022-12-16 | 江苏京沪重工有限公司 | Positive and negative manufacturing process of assembled and superposed twin-tire approach bridge steel box girder |
| CN115476066B (en) * | 2022-10-08 | 2024-02-20 | 江苏京沪重工有限公司 | Forward and reverse manufacturing process of assembled and stacked twin-type approach bridge steel box girder |
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| CN115070245B (en) | 2024-05-24 |
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