CN102492801A - Method for mounting spatial portal frame structure on top of tower of converter bay in steelshop - Google Patents
Method for mounting spatial portal frame structure on top of tower of converter bay in steelshop Download PDFInfo
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- CN102492801A CN102492801A CN2011103979123A CN201110397912A CN102492801A CN 102492801 A CN102492801 A CN 102492801A CN 2011103979123 A CN2011103979123 A CN 2011103979123A CN 201110397912 A CN201110397912 A CN 201110397912A CN 102492801 A CN102492801 A CN 102492801A
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Abstract
The invention relates to a method for mounting a spatial portal frame structure on the top of a tower of a converter bay in a steelshop. The method includes the following steps: (1) in the converter bay, an operating platform is built at a spatial portal frame structure-mounting position, and central lines are set and outwardly extended for 0.5m; (2) frame beams, frame posts and corbels are assembled in place and welded according to the drawn central lines; (3) platform beams are mounted on the welded frame posts and welded; (4) after portal frames are fabricated, central lines and one-meter elevation lines need to be drawn on the frame posts; (5) the lower parts of the three frame posts of each portal frame are temporarily supported by angle irons, so that a shaped portal frame is formed; (6) cranes are determined to be adopted; (7) each assembled portal frame is hoisted in place, so that the spatial portal frame structure is formed. The method is simple and practicable, double cranes are adopted to hoist the finished portal frames, consequently, the construction time is effectively shortened, the construction efficiency is increased, the construction cost is reduced, the construction quality is increased, and the method is safe and reliable.
Description
Technical field
The invention belongs to the field of steel structure of steelshop converter bay, especially a kind of high building upper portion door type rigid frame three-dimensional system installation method of steelshop converter bay.
Background technology
Steelshop generally comprises that electric furnace is striden, converter bay and refining are striden, and high building one side of converter bay is connected with the steelwork that electric furnace is striden, and opposite side is connected with the steelwork that refining is striden; The high building of steelshop converter bay is the emphasis and the difficult point place of steel-making engineering construction; And the door type rigid frame three-dimensional system mounting height on high building top is high, the assembling amount is big, and installation is difficulty particularly, and door type rigid frame three-dimensional system is formed by connecting through crossbeam and mounting block on some Pin door shaped steel framves; One Pin door shaped steel frame generally is made up of three steel frame columns, truss-steel beam, landing beam and brackets; In construction in the past, generally be truss-steel beam, steel frame columns and the bracket that is employed in floor manufacture door shaped steel frame, bulk-breaking lifts on the high building of converter bay then; The method of aloft installing while assembling; Not only wayward rigid frame geometrical dimension of this installation method and installation quality, and the shortcoming that exists working aloft potential safety hazard and effect to reduce are difficult for ensuring the quality of products and the duration.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of high building upper portion door type rigid frame three-dimensional system installation method of steelshop converter bay is provided, and this installation method is simple, adopts double crane to become the lifting of Pin door shaped steel frame; Effectively shortened the engineering time; Improve operating efficiency, reduced construction cost, improved construction quality.
The present invention solves its technical problem and realizes through following technical scheme:
A kind of high building upper portion door type rigid frame three-dimensional system installation method of steelshop converter bay the steps include:
(1), set up service platform near below electric furnace is striden inside door type rigid frame three-dimensional system installation site, on platform, make the medullary ray of every Pin truss-steel beam, steel frame columns and bracket and the 0.5m that outwards extends according to the design paper size;
(2), by the position of center line of finishing with the assembling in place of truss-steel beam, steel frame columns and bracket; Adjust the planimetric position of truss-steel beam and steel frame columns; Carry out the spot welding working fastening then, position of center line and geometrical dimension are proofreaied and correct in inspection once more, just formally weld moulding after accurate;
(3), the landing beam on the weldsteel trestle is installed, according to the position of center line erecting stage beam of reserving, at first moulding is welded in spot welding again;
(4), after making a shaped steel frame, on steel frame columns, eject the absolute altitude line of its medullary ray and 1m, control wherein heart position and absolute altitude when being convenient to install;
(5), the bottom is supported with angle steel temporarily between three steel frame columns of door shaped steel frame, forms the door shaped steel frame of moulding;
(6), calculate the weight of the door shaped steel frame that assembles, according to hoisting capacity and height and crane performance, confirm to adopt two loop wheel machines;
(7), behind every Pin door shaped steel frame hoisted in position that will assemble, carry out centering, levelling, measure the error of its medullary ray and absolute altitude; And adjust; Tight a bolt then, whenever install a Pin door shaped steel frame and want working fastening, install adjacent two Pin door shaped steel framves after; Next Pin door shaped steel frame is installed again, until every Pin door shaped steel frame is installed a composition door type rigid frame three-dimensional system.
Advantage of the present invention and beneficial effect are:
1, the high building upper portion door type rigid frame three-dimensional system installation method of this steelshop converter bay comprises the ground assembling of a shaped steel frame and lifts and is assembled into a type rigid frame three-dimensional system on the high building; This kind method has not only guaranteed the quality and the construction speed of engineering; Especially eliminated the potential safety hazard of construction process; Guarantee safety of construction greatly, obtained good economic and social benefit.
2, the present invention is simple, adopts double crane to become the lifting of Pin door shaped steel frame, has effectively shortened the engineering time; Improved operating efficiency; Having reduced construction cost, improved construction quality, is a kind of high building upper portion door type rigid frame three-dimensional system installation method of safe and reliable steelshop converter bay.
Description of drawings
The steelshop structural representation that Fig. 1 uses for the present invention.
Embodiment
Through specific embodiment the present invention is made further detailed description below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of high building upper portion door type rigid frame three-dimensional system installation method of steelshop converter bay, the steelwork 1 that high building 6 one sides and the electric furnace of converter bay are striden is connected, and opposite side is connected with the steelwork 7 that refining is striden and the steps include:
(1), set up service platform near below electric furnace is striden inside door type rigid frame three-dimensional system installation site, on platform, make the medullary ray of every Pin truss-steel beam 3, steel frame columns 4 and bracket 2 according to the design paper size, and the 0.5m that outwards extends;
(2), by the position of center line of finishing with the assembling in place of truss-steel beam, steel frame columns and bracket; Adjust the planimetric position of truss-steel beam and steel frame columns; Carry out the spot welding working fastening then, position of center line and geometrical dimension are proofreaied and correct in inspection once more, just formally weld moulding after accurate; All adopt covered arc welding, weld bead height will meet the design paper requirement;
(3), the landing beam 5 on the weldsteel trestle is installed, according to the position of center line erecting stage beam of reserving, at first moulding is welded in spot welding again; With anti-welding deformation, must not arbitrarily move parallels and jig;
(4), after making a shaped steel frame, on steel frame columns, eject the absolute altitude line of its medullary ray and 1m, control wherein heart position and absolute altitude when being convenient to install;
(5), the bottom is supported with angle steel temporarily between three steel frame columns of door shaped steel frame, forms the door shaped steel frame of moulding;
(6), calculate the weight of the door shaped steel frame that assembles, according to hoisting capacity and height and crane performance, confirm to adopt two loop wheel machines; , adopts by electric furnace 200t and each Pin door shaped steel frame of 50t crawler crane associating integral hoisting in striding;
(7), behind every Pin door shaped steel frame hoisted in position that will assemble, carry out centering, levelling, measure the error of its medullary ray and absolute altitude; And adjust; Tight a bolt then, whenever install a Pin door shaped steel frame and want working fastening, install adjacent two Pin door shaped steel framves after; Next Pin door shaped steel frame is installed again, until every Pin door shaped steel frame is installed a composition door type rigid frame three-dimensional system.
When lifting, arrange according to each member on the weight of door shaped steel frame and the door shaped steel frame with loop wheel machine, calculate the shaped steel frame master suspension centre of going out be located in the middle of the angle of steel frame columns and truss-steel beam, steel frame columns bottom and interim support angle steel angle in the middle of secondary suspension centre is located at.200t crawler crane and 50t mobile crane all are located in electric furnace strides; With 200 tons of crawler cranes electric furnace is installed earlier and is striden roof girder, every installation one Pin roof girder is then installed the Pin door shaped steel frame on the roof girder; Installation is advanced to the other end by an end, at last with door type rigid frame three-dimensional system assembled.
Claims (1)
1. the high building upper portion door type rigid frame three-dimensional system installation method of a steelshop converter bay, it is characterized in that: the step that this method comprises is:
(1), set up service platform near below electric furnace is striden inside door type rigid frame three-dimensional system installation site, on platform, make the medullary ray of every Pin truss-steel beam, steel frame columns and bracket and the 0.5m that outwards extends according to the design paper size;
(2), by the position of center line of finishing with the assembling in place of truss-steel beam, steel frame columns and bracket; Adjust the planimetric position of truss-steel beam and steel frame columns; Carry out the spot welding working fastening then, position of center line and geometrical dimension are proofreaied and correct in inspection once more, just formally weld moulding after accurate;
(3), the landing beam on the weldsteel trestle is installed, according to the position of center line erecting stage beam of reserving, at first moulding is welded in spot welding again;
(4), after making a shaped steel frame, on steel frame columns, eject the absolute altitude line of its medullary ray and 1m, control wherein heart position and absolute altitude when being convenient to install;
(5), the bottom is supported with angle steel temporarily between three steel frame columns of door shaped steel frame, forms the door shaped steel frame of moulding;
(6), calculate the weight of the door shaped steel frame that assembles, according to hoisting capacity and height and crane performance, confirm to adopt two loop wheel machines;
(7), behind every Pin door shaped steel frame hoisted in position that will assemble, carry out centering, levelling, measure the error of its medullary ray and absolute altitude; And adjust; Tight a bolt then, whenever install a Pin door shaped steel frame and want working fastening, install adjacent two Pin door shaped steel framves after; Next Pin door shaped steel frame is installed again, until every Pin door shaped steel frame is installed a composition door type rigid frame three-dimensional system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397912 CN102492801B (en) | 2011-12-05 | 2011-12-05 | Method for mounting spatial portal frame structure on top of tower of converter bay in steelshop |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397912 CN102492801B (en) | 2011-12-05 | 2011-12-05 | Method for mounting spatial portal frame structure on top of tower of converter bay in steelshop |
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| CN102492801A true CN102492801A (en) | 2012-06-13 |
| CN102492801B CN102492801B (en) | 2013-07-17 |
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| CN 201110397912 Active CN102492801B (en) | 2011-12-05 | 2011-12-05 | Method for mounting spatial portal frame structure on top of tower of converter bay in steelshop |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054566A1 (en) * | 1998-04-21 | 1999-10-28 | Metsec Plc | Portal frame construction |
| CN101899904A (en) * | 2010-07-23 | 2010-12-01 | 中冶建工有限公司 | Method for two-way hoisting construction of converter tower steel structure |
| CN102108788A (en) * | 2010-12-31 | 2011-06-29 | 华煜建设集团有限公司 | Method for constructing hanging in the air large-span support |
-
2011
- 2011-12-05 CN CN 201110397912 patent/CN102492801B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054566A1 (en) * | 1998-04-21 | 1999-10-28 | Metsec Plc | Portal frame construction |
| CN101899904A (en) * | 2010-07-23 | 2010-12-01 | 中冶建工有限公司 | Method for two-way hoisting construction of converter tower steel structure |
| CN102108788A (en) * | 2010-12-31 | 2011-06-29 | 华煜建设集团有限公司 | Method for constructing hanging in the air large-span support |
Non-Patent Citations (4)
| Title |
|---|
| 刘康宜: "门式刚架厂房结构安装技术", 《施工技术》 * |
| 周学军等: "《门式刚架轻钢结构设计与施工》", 31 October 2001, 山东科学技术出版社 * |
| 金芳芳、胡景东: "轻钢门式刚架常见施工质量问题与措施", 《钢结构》 * |
| 魏成权: "大高度轻型门式刚架结构安装技术", 《山西建筑》 * |
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| CN102492801B (en) | 2013-07-17 |
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