CN101122158B - Method for manufacturing plate-patched double-abdomen eccentricity combination beam - Google Patents
Method for manufacturing plate-patched double-abdomen eccentricity combination beam Download PDFInfo
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- CN101122158B CN101122158B CN2007101315719A CN200710131571A CN101122158B CN 101122158 B CN101122158 B CN 101122158B CN 2007101315719 A CN2007101315719 A CN 2007101315719A CN 200710131571 A CN200710131571 A CN 200710131571A CN 101122158 B CN101122158 B CN 101122158B
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Abstract
The invention relates to an improved method of making a welding plate assembly double-web eccentric combined beam, which is characterized in that horizontal I-shaped eccentric beams are assembled. Firstly, an upper wing plate and a lower wing plate are arranged with 3 to 8 degrees outwards, welded and assembled; the two horizontal I-shaped eccentric beams to be welded are positioned back to back, and welded from their central partition to both ends; when the partitions fail to be connected to the horizontal I-shaped eccentric beam web plates, pressurization to deform is conducted. Adopting pre-set anti-deformation when welding the horizontal I-shaped eccentric beams, the method of the invention produces hot deformation by welding, so as to neutralize or reduce the vertical deformation produced in welding; next, the method does not first correct sidewise bending and distorted deformation of the web plates, but makes the hot deformation produced in welding of partitions automatically draw level by direct backstep welding of the partitions from the center to both ends. Therefore, the overall deformation of the welded double-web eccentric combined beam is small, and only needs once slight correction, which not only reduces the correction times (only once needed), but also reduce the correction deformation, so that the production efficiency can be about 20percent higher that of the original methods.
Description
Technical field
The present invention relates to double-abdomen eccentricity combination beam in a kind of steel work, especially to welded plate patched double-abdomen eccentricity combination beam preparation method's improvement.
Background technology
Double-abdomen eccentricity combination beam is boiler room steel constructed beam (Fig. 1) for example, it is a kind of load-bearing crossbeam in the steel construction piece, it is to connect the assembly dorsad of the eccentric beam 1 of I-shaped by two plate weldings, combine by welding some diaphragms 2 connections, prior art is made double-abdomen eccentricity combination beam, by common H section steel manufacture technology, the welding production plate is pieced together the eccentric beam of I-shaped, assembling welding diaphragm more earlier.Yet 1 liang of wing plate 1.1 of the eccentric beam of I-shaped can cause the eccentric closed distortion of beam opening of I-shaped (Fig. 2) not according to web 1.2 center symmetries after the plate welding connects, and also can cause side sway, torsional deformation (Fig. 3) simultaneously.Regular for guaranteeing welding fabrication, at first after being welded into the eccentric beam 1 of I-shaped, after once proofreading and correct, and then weld middle diaphragm plate; But behind the assembly welding central dividing plate, can cause again the wave transformation of I-shaped web, need carry out second-order correction.Therefore the prior art for preparation method not only needs secondary to proofread and correct, and because the spelling steel plate is thicker, and workpiece is bigger, and deflection is big, causes very difficulty of correction, and production efficiency is low.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of welding deformation amount little, and only need once slightly to proofread and correct the method for manufacturing plate-patched double-abdomen eccentricity combination beam that the correction work amount is little.
The object of the invention realization, the main improvement is that two wing plates are outside one's consideration by 3-8 and are stuck up about making earlier, namely put in advance reversible deformation when the plate welding connects the eccentric beam of I-shaped, utilizes welding process to produce distortion and offsets opening closure, perpendicularity deviation; Welding then venter posterior plate arch bending deformation does not proofread and correct immediately, but directly weld diaphragm plate, the distortion that utilizes welding diaphragm to produce makes it obtain proofreading and correct, sheets thus obtained patched double-abdomen eccentricity combination beam, not only deflection is little, and only needs once slightly to proofread and correct (with respect to prior art), just can reach requirement, overcome the deficiencies in the prior art, realized the object of the invention.Specifically, method for manufacturing plate-patched double-abdomen eccentricity combination beam of the present invention comprises the eccentric beam of spelling welding I-shaped, and Combination Welding connects diaphragm plate, it is characterized in that the eccentric beam of spelling welding I-shaped, and two wing plates are outside one's consideration by 3-8 and are stuck up placement, the welding combination up and down earlier; The eccentric beam of two I-shapeds that will weld again welds to two ends from central partition plate successively directly back to placement, and dividing plate is not connected with the eccentric web of I-shaped then makes its distortion by pressurization.
The eccentric beam of welding I-shaped presets the reversible deformation angle, presses actual plate thickness and determines that wing plate thickness is big, and because of heat distortion amount is big, it is big to preset the reversible deformation angle; Wing plate thickness is little, and the relatively hot deflection is little, and it is little to preset the reversible deformation angle.Test is groped, and wherein more suitable outer rake angle degree is the 3-5 degree.
For easy during near two ends welding diaphragm plate pressurization eliminate the gap, a kind of better method be with the eccentric beam of two I-shapeds back to placing up and down, like this when the diaphragm plate of welding both ends, only need that eccentric beam pressurization make it eliminate the gap to upper I-shaped.
Method for manufacturing plate-patched double-abdomen eccentricity combination beam of the present invention, because when the eccentric beam of welding I-shaped, reversible deformation (both wings are outer sticking up suitably) is preset in employing, utilize welding to produce thermal deformation, offset or reduce to weld the perpendicularity distortion of generation, so that the eccentric beam perpendicularity of I-shaped normal after the welding, deflection is littler; Secondly, web side sway, torsional deformation are not proofreaied and correct earlier, but directly by middle past two ends backstep welding diaphragm plate, the thermal deformation that produces when utilizing the welding diaphragm plate is evened up it automatically.Double-abdomen eccentricity combination beam bulk deformation amount after the welding is little like this, only needs once to proofread and correct a little to get final product, and has not only reduced number of corrections, only needs once; And correcting deformed amount is little, makes production efficiency, and production efficiency can more former method improve about about 20%.
Below in conjunction with a specific embodiment, further specify the inventive method.
Description of drawings
Fig. 1 is a plate-patched double-abdomen eccentricity combination beam member section schematic diagram.
Fig. 2 causes perpendicularity distortion schematic diagram for the eccentric beam of prior art welding I-shaped.
Fig. 3 causes the side bending deformation schematic diagram for the eccentric beam of prior art welding I-shaped.
Fig. 4 presets the reversible deformation schematic diagram for the present invention welds the front assembly unit of the eccentric beam weldering of I-shaped.
Fig. 5 is assembly welding diaphragm plate schematic diagram of the present invention.
The specific embodiment
Embodiment: referring to Fig. 4,5, cut each steel plate by designing requirement, with thickness is 30mm two wing plates 1.1, with thickness be 12mm web 1.2, by 5 be outside one's consideration and stick up (α is 95 degree) put into the eccentric beam of I-shaped, press leg height 8mm automatic submerged-arc welding machine, press diagonal angle alternate cycles welding, make plate and piece together the eccentric beam of I-shaped; To weld the eccentric beam of two I-shapeds does not proofread and correct directly back to placing up and down, the centre is positioned with diaphragm 2 by spot welding, be welded to connect diaphragm successively from middle mind-set two ends, be welded to end or end closely, when the eccentric web of diaphragm and I-shaped gap is big, the eccentric beam of I-shaped is applied external force P pressurization make its closure, welding, proofread and correct to stipulating requirement a little behind the welding fabrication.
Claims (3)
1. method for manufacturing plate-patched double-abdomen eccentricity combination beam comprises the eccentric beam of spelling welding I-shaped, and Combination Welding connects diaphragm plate, it is characterized in that the eccentric beam of spelling welding I-shaped, and two wing plates are outside one's consideration by 3-8 and are stuck up placement, the welding combination up and down earlier; The eccentric beam of two I-shapeds that will weld again welds to two ends from central partition plate successively directly back to placement, and dividing plate is not connected with the eccentric web of I-shaped then makes its distortion by pressurization.
2. according to the described method for manufacturing plate-patched double-abdomen eccentricity combination beam of claim 1, it is characterized in that outer rake angle degree is the 3-5 degree.
3. according to claim 1 or 2 described method for manufacturing plate-patched double-abdomen eccentricity combination beam, it is characterized in that the eccentric beam Combination Welding of two I-shapeds diaphragm plate, is back to placing up and down with the eccentric beam of two I-shapeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101315719A CN101122158B (en) | 2007-09-03 | 2007-09-03 | Method for manufacturing plate-patched double-abdomen eccentricity combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101315719A CN101122158B (en) | 2007-09-03 | 2007-09-03 | Method for manufacturing plate-patched double-abdomen eccentricity combination beam |
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| Publication Number | Publication Date |
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| CN101122158A CN101122158A (en) | 2008-02-13 |
| CN101122158B true CN101122158B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101315719A Expired - Fee Related CN101122158B (en) | 2007-09-03 | 2007-09-03 | Method for manufacturing plate-patched double-abdomen eccentricity combination beam |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259579B (en) * | 2008-04-14 | 2010-04-14 | 北京城建集团有限责任公司 | Processing method for box type space bending component |
| CN101972922B (en) * | 2010-11-24 | 2011-10-26 | 安徽富煌钢构股份有限公司 | Method for processing H-shaped crankle beam |
| CN114108944B (en) * | 2020-08-25 | 2023-01-03 | 赖政兴 | Asymmetric section metal beam with damage warning function |
| CN114833427B (en) * | 2022-06-08 | 2023-07-28 | 安徽精工钢结构有限公司 | Welding method for building steel structure groove-shaped section column limb |
| CN115106730A (en) * | 2022-08-08 | 2022-09-27 | 聊城产研创新发展有限公司 | Manufacturing method of welding embedded groove |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527608Y (en) * | 2002-05-17 | 2002-12-25 | 胡战波 | Prestressed large span solid web steel girder structure system |
| CN101018918A (en) * | 2004-04-27 | 2007-08-15 | 罗伯特·J·西蒙斯 | Beam end weld preparation |
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2007
- 2007-09-03 CN CN2007101315719A patent/CN101122158B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527608Y (en) * | 2002-05-17 | 2002-12-25 | 胡战波 | Prestressed large span solid web steel girder structure system |
| CN101018918A (en) * | 2004-04-27 | 2007-08-15 | 罗伯特·J·西蒙斯 | Beam end weld preparation |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2007-23712A 2007.02.01 |
| JP特开平10-325176A 1998.12.08 |
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