CN119952324A - A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam - Google Patents
A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam Download PDFInfo
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- CN119952324A CN119952324A CN202410590320.0A CN202410590320A CN119952324A CN 119952324 A CN119952324 A CN 119952324A CN 202410590320 A CN202410590320 A CN 202410590320A CN 119952324 A CN119952324 A CN 119952324A
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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
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
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- Optics & Photonics (AREA)
- Bridges Or Land Bridges (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a processing and manufacturing process of a 40m wide single-box five-chamber integral steel box girder, which is characterized in that: the manufacturing process comprises the following steps: s1: welding the top and bottom plate unit plate ribs; s2: welding the bottom plate unit; s3: welding a diaphragm plate unit; s4: welding the middle web plate; s5: welding a diaphragm plate of the third chamber; s6: welding the first chamber diaphragm and the fifth chamber diaphragm; s7: an anchor box partition plate and an anchor box are welded; s8: welding a triangle and a T row; s10: welding a top plate; s9: welding a side web plate: the invention gives out the tailor-welding method and the processing control of the 40m wide single-box five-chamber steel box girder, gives out the tailor-welding requirements of the bottom plate unit and the top plate unit in detail, can effectively control the assembly error and the welding shrinkage deformation, and ensures the transverse slope precision of the bridge deck; in addition, the splice welding sequence can effectively reduce the overall deformation condition after assembly welding, improve the overall molded line after assembly welding to meet the set requirement, reduce the subsequent trimming time, improve the efficiency and save the resources.
Description
Technical Field
The invention relates to the technical field of steel box girder manufacturing, in particular to a processing and manufacturing process of a 40m wide single-box five-chamber integral steel box girder.
Background
The steel box girder, also called steel plate box girder, is a common structural form for long span bridges, is generally used on bridges with larger spans, is called as a steel box girder because the appearance is similar to a box, and along with the continuous upgrading of the traffic and transportation bearing capacity requirement, lanes of pavement design gradually develop from the original two-way lanes to the two-way four lanes, and the steel box girder bridge with common rail and same layer appears in some important city bridges, and the width of the bridge deck is widened from the whole width of 30m to 40 m. The ultra-wide steel box girder has higher and higher requirements on the manufacturing precision, and the steel box girder manufactured according to the traditional manufacturing process is difficult to effectively ensure the precision control. Especially after the bridge deck is widened, the plate units are segmented and increased, the butt seam is increased, the length of the transverse welding seam is increased, and the cumulative effect of the shrinkage of the longitudinal butt welding seam can influence the control precision of the transverse slope of the bridge deck, so that the integral structure precision of the steel box girder segment can be directly influenced, the drainage of the bridge deck is influenced, and the later-period use comfort of the bridge is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a processing and manufacturing process for a 40m wide single-box five-chamber integral steel box girder, which can solve the problem of complex assembly welding process and low assembly efficiency in the processing and construction of a general ultra-wide steel box girder.
In order to solve the technical problems, the technical scheme of the invention is that the processing and manufacturing process of the whole steel box girder with the width of 40m and the single box and the five chambers is characterized in that the specific manufacturing process is as follows:
S1, assembling and welding plate ribs of a top plate unit and a bottom plate unit, namely, cutting and blanking the top plate unit and the bottom plate unit, welding upper plate ribs on the surfaces of the top plate unit and the bottom plate unit, and adopting double-sided 12mm fillet welds between the plate ribs and the top plate unit and between the plate ribs and the bottom plate unit, wherein 80% penetration welds are adopted between the plate ribs and the top plate unit and the bottom plate unit;
s2, bottom plate unit assembly welding, namely placing the bottom plate units subjected to plate rib assembly welding on a jig frame, wherein the welding between the bottom plate units is contracted by 1 millin the length direction, and the allowance of 15mm is added at one end which is being processed at the other end;
S3, assembling and welding the diaphragm plate unit, namely uniformly dividing eight manufactured diaphragm plates into two groups, and welding the eight groups of diaphragm plates on the bottom plate unit along the width direction of the bottom plate unit, wherein the two diaphragm plates are respectively positioned at the positions of the second chamber and the fourth chamber;
s4, installing and welding the middle webs, namely vertically welding a total of four middle webs which are manufactured on two side surfaces of two groups of transverse partition plates respectively, and welding the bottom ends of the middle webs on a bottom plate unit;
S5, welding the manufactured four third chamber diaphragm plates on the bottom plate unit, wherein two ends of the third chamber diaphragm plates correspond to the diaphragm plates in the second chamber and the third chamber respectively and are welded on the middle web plate;
S6, assembling and welding the first chamber diaphragm plates and the fifth chamber diaphragm plates, namely welding the manufactured four first chamber diaphragm plates and four fifth chamber diaphragm plates on the bottom plate unit of the first chamber and the bottom plate unit of the fifth chamber respectively, and welding the end parts of the four first chamber diaphragm plates and the four fifth chamber diaphragm plates on the middle web plates;
S7, welding an anchor box partition board and an anchor box installation partition board on the middle web plate of the second chamber and the middle web plate of the fourth chamber, and then welding and connecting the anchor box and the anchor box installation partition board on the middle web plate;
S8, welding a triangular plate and a T row, namely welding the triangular plate at the joint of the first chamber diaphragm plate and the bottom plate unit and the joint of the fifth chamber diaphragm plate and the bottom plate unit, and welding the T row on the bottom plate unit beside the triangular plate;
S9, welding the side webs, namely vertically welding the end parts of the first chamber and the end parts of the fifth chamber of the manufactured side webs respectively, and welding the side webs on the bottom plate unit;
S10, assembling and welding a top plate, namely assembling and welding the top plate unit with the rib plates, which is manufactured and manufactured, on the top end of the steel box girder in sequence, welding a rail mounting base and lifting lugs on the surface of the top plate unit after assembling and welding, and finally welding an upper bridge bottom support on the lower surface of the bottom plate.
In the step S3, in the assembly welding of the diaphragm plate units, transverse and vertical plate ribs on the diaphragm plate adopt double-sided fillet welds, a penetration weld is formed between the 16mm diaphragm plate and the bottom plate unit, a groove with a root of 2mm is reserved at a single side of 40 degrees, a double-sided fillet weld is formed between the 12mm diaphragm plate and the bottom plate unit, CP root cleaning welding is not performed between the diaphragm plate and the bottom plate unit at the 20mm anchor point, and the root cleaning side faces to the side with large space.
In the step S4, in the assembly welding of the middle web, the small T rows on the middle web are spliced into 8mm double-sided fillet welds, and the penetration welds between the small T rows on the middle web and the middle web are formed by adopting a single-sided 40-DEG root-reserving 2mm groove mode.
And S8, a penetration weld joint is formed between the triangular plate and the bending plate in the welding of the triangular plate and the T rows, a groove with a root of 2mm is reserved at 40 degrees on two sides, a double-sided fillet weld joint is formed between the corner stiffening and the diaphragm plate, and a three-sided single-sided fillet weld joint is formed between the corner stiffening and the outer side of the bottom plate unit.
In the step S2, in the step of assembling and welding the bottom plate units, ceramic backing plate welding is adopted in the step of assembling and welding the bottom plate units in the width direction, a V40-degree groove is formed upwards, and a mode of combining root cleaning welding with the ceramic backing plate is adopted in a gap between the top plate units.
The invention has the advantages that:
1) The invention provides a splice welding method and processing control of a 40m wide single-box five-chamber steel box girder, which gives out the splice welding requirements of a bottom plate unit and a top plate unit in detail, completes the assembly and welding of the steel box girder according to the above technical requirements, can effectively control assembly errors and welding shrinkage deformation, and ensures the transverse slope precision of a bridge deck, and in addition, the splice welding sequence can effectively reduce the integral deformation condition after assembly and welding, improve the integral molded line after assembly and welding to meet the set requirements, reduce the subsequent finishing time, improve the efficiency and save the resources.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a flow chart of a processing and manufacturing process of a 40m wide single-box five-chamber integral steel box girder.
Fig. 2 to 8 are process-forming state diagrams of a 40m wide single-box five-chamber integral steel box girder of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The processing and manufacturing process of the whole steel box girder with the width of 40m and the single box and the five chambers as shown in fig. 1 to 8 comprises the following specific manufacturing processes:
S1, assembling and welding plate ribs of a top plate unit and a bottom plate unit, namely, cutting and blanking the top plate unit and the bottom plate unit, welding upper plate ribs on the surfaces of the top plate unit and the bottom plate unit, and adopting double-sided 12mm fillet welds between the plate ribs and the top plate unit and between the plate ribs and the bottom plate unit, wherein 80% penetration welds are adopted between the plate ribs and the top plate unit and the bottom plate unit;
s2, bottom plate unit assembly welding, namely placing the bottom plate units subjected to plate rib assembly welding on a jig frame, wherein the welding between the bottom plate units is contracted by 1 millin the length direction, and the allowance of 15mm is added at one end which is being processed at the other end;
S3, assembling and welding the diaphragm plate unit, namely uniformly dividing eight manufactured diaphragm plates into two groups, and welding the eight groups of diaphragm plates on the bottom plate unit along the width direction of the bottom plate unit, wherein the two diaphragm plates are respectively positioned at the positions of the second chamber and the fourth chamber;
s4, installing and welding the middle webs, namely vertically welding a total of four middle webs which are manufactured on two side surfaces of two groups of transverse partition plates respectively, and welding the bottom ends of the middle webs on a bottom plate unit;
S5, welding the manufactured four third chamber diaphragm plates on the bottom plate unit, wherein two ends of the third chamber diaphragm plates correspond to the diaphragm plates in the second chamber and the third chamber respectively and are welded on the middle web plate;
S6, assembling and welding the first chamber diaphragm plates and the fifth chamber diaphragm plates, namely welding the manufactured four first chamber diaphragm plates and four fifth chamber diaphragm plates on the bottom plate unit of the first chamber and the bottom plate unit of the fifth chamber respectively, and welding the end parts of the four first chamber diaphragm plates and the four fifth chamber diaphragm plates on the middle web plates;
S7, welding an anchor box partition board and an anchor box installation partition board on the middle web plate of the second chamber and the middle web plate of the fourth chamber, and then welding and connecting the anchor box and the anchor box installation partition board on the middle web plate;
S8, welding a triangular plate and a T row, namely welding the triangular plate at the joint of the first chamber diaphragm plate and the bottom plate unit and the joint of the fifth chamber diaphragm plate and the bottom plate unit, and welding the T row on the bottom plate unit beside the triangular plate;
S9, welding the side webs, namely vertically welding the end parts of the first chamber and the end parts of the fifth chamber of the manufactured side webs respectively, and welding the side webs on the bottom plate unit;
S10, assembling and welding a top plate, namely assembling and welding the top plate unit with the rib plates, which is manufactured and manufactured, on the top end of the steel box girder in sequence, welding a rail mounting base and lifting lugs on the surface of the top plate unit after assembling and welding, and finally welding an upper bridge bottom support on the lower surface of the bottom plate.
S3, in the assembly welding of the diaphragm plate units, transverse and vertical plate ribs on the diaphragm plate adopt double-sided fillet welds, a penetration weld is formed between the 16mm diaphragm plate and the bottom plate unit, a groove with a root of 2mm is reserved on one side of the welding groove at 40 degrees, a double-sided fillet weld is formed between the 12mm diaphragm plate and the bottom plate unit, a CP root cleaning weld is not formed between the diaphragm plate and the bottom plate unit at the 20mm anchor point, and the root cleaning side faces to the side with large space.
S4, in the assembly welding of the middle web, the small T rows on the middle web are spliced into 8mm double-sided fillet welds, and the penetration welds between the small T rows on the middle web and the middle web are formed in a single-sided 40-degree root-reserving 2mm groove mode.
S8, a penetration weld joint is formed between the triangular plate and the bending plate in the welding of the triangular plate and the T-shaped row, a groove with a root of 2mm is reserved at the two sides of the groove at 40 degrees, a double-sided fillet weld joint is formed between the corner stiffening and the diaphragm plate, and a single-sided fillet weld joint is formed between the corner stiffening and the outer side of the bottom plate unit.
S2, in the assembly welding of the bottom plate units, ceramic backing plate welding is adopted in the assembly welding of the bottom plate units in the width direction, a V40-degree groove is formed upwards, and a mode of combining root cleaning welding with the ceramic backing plate is adopted in a gap between the top plate units.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A processing and manufacturing process of a 40m wide single-box five-chamber integral steel box girder is characterized by comprising the following steps of:
S1, assembling and welding plate ribs of a top plate unit and a bottom plate unit, namely, cutting and blanking the top plate unit and the bottom plate unit, welding upper plate ribs on the surfaces of the top plate unit and the bottom plate unit, and adopting double-sided 12mm fillet welds between the plate ribs and the top plate unit and between the plate ribs and the bottom plate unit, wherein 80% penetration welds are adopted between the plate ribs and the top plate unit and the bottom plate unit;
s2, bottom plate unit assembly welding, namely placing the bottom plate units subjected to plate rib assembly welding on a jig frame, wherein the welding between the bottom plate units is contracted by 1 millin the length direction, and the allowance of 15mm is added at one end which is being processed at the other end;
S3, assembling and welding the diaphragm plate unit, namely uniformly dividing eight manufactured diaphragm plates into two groups, and welding the eight groups of diaphragm plates on the bottom plate unit along the width direction of the bottom plate unit, wherein the two diaphragm plates are respectively positioned at the positions of the second chamber and the fourth chamber;
s4, installing and welding the middle webs, namely vertically welding a total of four middle webs which are manufactured on two side surfaces of two groups of transverse partition plates respectively, and welding the bottom ends of the middle webs on a bottom plate unit;
S5, welding the manufactured four third chamber diaphragm plates on the bottom plate unit, wherein two ends of the third chamber diaphragm plates correspond to the diaphragm plates in the second chamber and the third chamber respectively and are welded on the middle web plate;
S6, assembling and welding the first chamber diaphragm plates and the fifth chamber diaphragm plates, namely welding the manufactured four first chamber diaphragm plates and four fifth chamber diaphragm plates on the bottom plate unit of the first chamber and the bottom plate unit of the fifth chamber respectively, and welding the end parts of the four first chamber diaphragm plates and the four fifth chamber diaphragm plates on the middle web plates;
S7, welding an anchor box partition board and an anchor box installation partition board on the middle web plate of the second chamber and the middle web plate of the fourth chamber, and then welding and connecting the anchor box and the anchor box installation partition board on the middle web plate;
S8, welding a triangular plate and a T row, namely welding the triangular plate at the joint of the first chamber diaphragm plate and the bottom plate unit and the joint of the fifth chamber diaphragm plate and the bottom plate unit, and welding the T row on the bottom plate unit beside the triangular plate;
S9, welding the side webs, namely vertically welding the end parts of the first chamber and the end parts of the fifth chamber of the manufactured side webs respectively, and welding the side webs on the bottom plate unit;
S10, assembling and welding a top plate, namely assembling and welding the top plate unit with the rib plates, which is manufactured and manufactured, on the top end of the steel box girder in sequence, welding a rail mounting base and lifting lugs on the surface of the top plate unit after assembling and welding, and finally welding an upper bridge bottom support on the lower surface of the bottom plate.
2. A processing and manufacturing process of a 40m wide single-box five-chamber integral steel box girder is characterized in that S3, in the assembly welding of diaphragm plate units, transverse and vertical plate ribs on the diaphragm plates are double-sided fillet welds, a penetration weld is formed between a 16mm diaphragm plate and a bottom plate unit, a groove with a single side of 40 degrees is reserved, a double-sided fillet weld is formed between a 12mm diaphragm plate and the bottom plate unit, CP root cleaning welding is not performed between the diaphragm plate and the bottom plate unit at a 20mm anchor point, and the root cleaning side faces to the side with large space.
3. The processing and manufacturing process of the 40m wide single-box five-chamber integral steel box girder is characterized in that S4, in the assembly welding of a middle web, a small T row on the middle web is spliced into an 8mm double-sided fillet weld, a penetration weld is formed between the small T row on the middle web and the middle web, and a single-sided 40-degree root-reserving 2mm groove form is adopted.
4. The processing and manufacturing process of the whole steel box girder with the width of 40m and the five chambers of the single box is characterized in that S8, a penetration weld joint is formed between a triangular plate and a bending plate in the welding of the triangular plate and the T-shaped row, a groove with the root of 2mm is reserved at 40 degrees on both sides, a double-sided fillet weld joint is formed between a corner stiffening plate and a diaphragm plate, and a single-sided fillet weld joint is formed between the corner stiffening plate and the outer side three sides of a bottom plate unit.
5. The processing and manufacturing process of the whole steel box girder with the width of 40m and the single box and the five chambers is characterized in that S2, in the assembly welding of the bottom plate units, ceramic backing plate welding is adopted in the assembly welding of the bottom plate units in the width direction, a V40-degree groove is formed upwards, and a mode of combining root cleaning welding with the ceramic backing plate is adopted in a gap between the top plate units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410590320.0A CN119952324A (en) | 2024-05-13 | 2024-05-13 | A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410590320.0A CN119952324A (en) | 2024-05-13 | 2024-05-13 | A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam |
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| CN119952324A true CN119952324A (en) | 2025-05-09 |
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| CN202410590320.0A Pending CN119952324A (en) | 2024-05-13 | 2024-05-13 | A processing and manufacturing technology of a 40m wide single-box five-chamber integral steel box beam |
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| CN107142833A (en) * | 2017-05-23 | 2017-09-08 | 中建钢构有限公司 | A kind of segmented large span steel beam and its welding method |
| CN207017133U (en) * | 2017-05-23 | 2018-02-16 | 中建钢构有限公司 | A kind of segmented large span steel beam |
| US20200023469A1 (en) * | 2017-04-11 | 2020-01-23 | Crrc Qingdao Sifang Co., Ltd. | Beam structure and hybrid welding method thereof |
| CN111926705A (en) * | 2020-05-08 | 2020-11-13 | 江苏中铁山桥重工有限公司 | Method for integrally assembling ultra-wide framing steel box girder |
| CN113500273A (en) * | 2021-06-07 | 2021-10-15 | 中铁十八局集团隧道工程有限公司 | Steel box girder construction welding process |
| CN114164770A (en) * | 2022-02-10 | 2022-03-11 | 中铁山桥(南通)有限公司 | Assembling method for forward and reverse combination of ultra-wide framing steel box girder |
| CN114178736A (en) * | 2021-12-31 | 2022-03-15 | 中铁宝桥集团有限公司 | A method for controlling the transverse slope of super wide steel box girder |
| CN114799621A (en) * | 2022-02-22 | 2022-07-29 | 中铁宝桥（扬州）有限公司 | Large bridge steel box girder block assembling and welding process |
| CN115008053A (en) * | 2022-06-07 | 2022-09-06 | 中国五冶集团有限公司 | A kind of processing and manufacturing method of curved variable section steel box girder |
| CN116275647A (en) * | 2023-03-13 | 2023-06-23 | 中国电建市政建设集团有限公司 | Welding method for curve variable-beam-width continuous steel box beam structure |
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2024
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20200023469A1 (en) * | 2017-04-11 | 2020-01-23 | Crrc Qingdao Sifang Co., Ltd. | Beam structure and hybrid welding method thereof |
| CN107142833A (en) * | 2017-05-23 | 2017-09-08 | 中建钢构有限公司 | A kind of segmented large span steel beam and its welding method |
| CN207017133U (en) * | 2017-05-23 | 2018-02-16 | 中建钢构有限公司 | A kind of segmented large span steel beam |
| CN111926705A (en) * | 2020-05-08 | 2020-11-13 | 江苏中铁山桥重工有限公司 | Method for integrally assembling ultra-wide framing steel box girder |
| CN113500273A (en) * | 2021-06-07 | 2021-10-15 | 中铁十八局集团隧道工程有限公司 | Steel box girder construction welding process |
| CN114178736A (en) * | 2021-12-31 | 2022-03-15 | 中铁宝桥集团有限公司 | A method for controlling the transverse slope of super wide steel box girder |
| CN114164770A (en) * | 2022-02-10 | 2022-03-11 | 中铁山桥(南通)有限公司 | Assembling method for forward and reverse combination of ultra-wide framing steel box girder |
| CN114799621A (en) * | 2022-02-22 | 2022-07-29 | 中铁宝桥（扬州）有限公司 | Large bridge steel box girder block assembling and welding process |
| CN115008053A (en) * | 2022-06-07 | 2022-09-06 | 中国五冶集团有限公司 | A kind of processing and manufacturing method of curved variable section steel box girder |
| CN116275647A (en) * | 2023-03-13 | 2023-06-23 | 中国电建市政建设集团有限公司 | Welding method for curve variable-beam-width continuous steel box beam structure |
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