CN111889974A - Manufacturing process of pressure ring of bowl-shaped roof steel structure - Google Patents
Manufacturing process of pressure ring of bowl-shaped roof steel structure Download PDFInfo
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- CN111889974A CN111889974A CN202010734579.XA CN202010734579A CN111889974A CN 111889974 A CN111889974 A CN 111889974A CN 202010734579 A CN202010734579 A CN 202010734579A CN 111889974 A CN111889974 A CN 111889974A
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- pressure ring
- flange
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- flange surfaces
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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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a manufacturing process of a pressure ring of a bowl-shaped roof steel structure, which comprises the following steps: step 1: after the pressure ring flange surfaces are blanked, numbering is carried out independently, two adjacent pressure ring flange surfaces are numbered into a group, holes are drilled in a stacked mode, and relative position marking is carried out; step 2: the flange surface of the pressure ring and the pressure ring body are relatively and vertically arranged, and the flange surface of the pressure ring and the pressure ring body are welded together by spot welding to form a combined piece; and step 3: the two adjacent pressure ring bodies are screwed up by high-strength bolts through the flange surfaces of the tension rings; and 4, step 4: welding a welding seam between the flange surface of the pressure ring and the pressure ring body; and 5: the pressure ring node area is placed in a pre-assembled field according to space ground sample coordinates, and then an assembly formed by two adjacent flange surfaces and two sections of pressure ring bodies is sequentially hoisted and inserted into the pressure ring node area. The invention can improve work efficiency, save energy consumption, effectively ensure precision and have good economic and social benefits.
Description
Technical Field
The invention relates to the technical field of large-span stadium roofs, in particular to a manufacturing process of a pressure ring of a bowl-shaped roof steel structure.
Background
In recent years, with the continuous development of competitive sports in China, more and more venues are needed for various events, the area of the venues is originally larger, the covering area of the roof at the top of the venues is required to be wider and wider, and the application of the pressure ring structure of the bowl-shaped roof is more and more frequent.
Along with the change of the roof modeling, the horizontal roof pressure ring structure is gradually designed into a continuously fluctuating space saddle-shaped structure, and for a steel structure manufacturing unit, the concentricity and the laminating degree of a space flange surface between every two pressure rings are ensured on the basis of ensuring the whole length of the special-shaped space pressure ring structure. Therefore, in order to solve the above problems, a new technical solution is provided to meet the requirement.
Disclosure of Invention
In order to solve the problems, the invention discloses a manufacturing process of a pressure ring of a bowl-shaped roof steel structure.
The technical scheme of the invention is as follows: a manufacturing process of a pressure ring of a bowl-shaped roof steel structure comprises the following steps:
step 1: after the pressure ring flange surfaces are blanked, numbering is carried out independently, two adjacent pressure ring flange surfaces are numbered into a group, drilling holes are overlapped and drilled, and relative position marking is carried out, so that after the drilling holes are disassembled and combined again, the relative position is unchanged, and hole position dislocation caused by relative rotation can be avoided;
step 2: the flange surface of the pressure ring and the pressure ring body are relatively and vertically arranged, and the flange surface of the pressure ring and the pressure ring body are welded together by spot welding to form a combined piece;
and step 3: recombining the structure of the pressure ring, and screwing the two adjacent pressure ring bodies by using high-strength bolts through the flange surface of the tension ring;
and 4, step 4: in the assembly formed in the step 3, welding a welding seam between the flange surface of the pressure ring and the pressure ring body;
and 5: in the whole pressure ring, all the flange surfaces and the pressure ring bodies of the pressure ring belong to space parts, but the central surface of a pressure ring node area is perpendicular to the ground, so that in the subsequent final assembly process, the pressure ring node area is placed in a pre-assembly field according to space ground sample coordinates, and then a combined piece formed by two adjacent flange surfaces and two sections of pressure ring bodies is sequentially hoisted and inserted into the pressure ring node area.
The invention has the advantages that: the flange face bolt locking assembly welding technology is adopted, so that relative dislocation sliding and close adhesion of the flange superposed face hole group in the welding process are avoided, and the concentricity after welding is ensured. With the flange face pre-installation between two conventional clamping ring roof beams, change the direct whole tailor-welding of clamping ring roof beam body and node 3 into, effectual flange face degree of tightness, the concentricity problem of avoiding. Before final integral assembling and welding, the whole coordinates of the compression ring beam are subjected to outward expansion and deviation through a circumference method, so that the whole ring of compression ring beam meets the design size requirement after welding shrinkage, and the processing precision is effectively improved. The invention can improve work efficiency, save energy consumption, effectively ensure precision and have good economic and social benefits.
Drawings
FIG. 1 is a schematic view of the overall structure of a full-circle pressure ring of the bowl-shaped roof of the present invention;
FIG. 2 is a schematic view of a single pressure ring of the present invention;
FIG. 3 is a schematic view of a stacked-drill hole in a stacked face of adjacent pressure rings in accordance with the present invention;
FIG. 4 is a schematic view of the assembly of the overlapping faces and bodies between adjacent pressure rings of the present invention;
FIG. 5 is a schematic view of an integral tailor weld;
wherein: 1. The pressure ring comprises a pressure ring flange surface 2, a pressure ring body 3 and a pressure ring node area.
Detailed Description
For the purpose of enhancing an understanding of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
As shown in fig. 1-5, a process for manufacturing a pressure ring of a steel structure of a bowl-shaped roof comprises the following steps:
step 1: after the pressure ring flange faces 1 are fed, numbering is carried out independently, the adjacent pressure ring flange faces 1 are numbered into a group, overlapped drill holes are drilled, and relative position marking is carried out, so that after the drilling is completed and disassembled, when the pressure ring flange faces are combined again, the relative positions are unchanged, hole position dislocation caused by relative rotation is avoided, through the overlapped drill holes, an independent marking method is adopted, the matching performance and the uniqueness of each group of flange overlapped faces of the adjacent pressure rings are defined, and relative hole positions between the flange overlapped faces are controlled. By adopting a flange face bolt locking and welding technology, the relative dislocation sliding and the close adhesion degree of the flange superposed face hole group in the welding process are avoided, and the concentricity after welding is ensured;
step 2: the pressure ring flange surface 1 and the pressure ring body 2 are oppositely and vertically arranged, and the pressure ring flange surface 1 and the pressure ring body 2 are spot-welded together to form an assembly;
and step 3: recombining the structure of the pressure ring, and screwing the two adjacent pressure ring bodies by using high-strength bolts through the flange surface of the tension ring;
and 4, step 4: in the assembly formed in the step 3, welding seams between the pressure ring flange surface 1 and the pressure ring body 2 are welded;
and 5: in the whole pressure ring, all the pressure ring flange surfaces 1 and the pressure ring bodies 2 belong to space parts, but the center surface of the pressure ring node area 3 is perpendicular to the ground, so in the following final assembly process, the pressure ring node area 3 is placed in a pre-assembly field according to space ground sample coordinates, and then the combined parts formed by two adjacent flange surfaces 1 and two sections of pressure ring bodies 2 are sequentially hoisted and inserted into the pressure ring node area 3.
And welding seams between the pressure ring body 2 and the pressure ring node area 3 are symmetrically welded to form an integral pressure ring structure. Since the final welded seam may cause the overall shrinkage of the pressure ring, and the overall length margin of the pressure ring needs to be increased or decreased, in step 5, the spatial ground sample node coordinates of the pressure ring node area 3 need to be shifted outward. The offset adopts a circumference expansion method, if forty-six pressure rings of the stadium at this time exist, ninety welding seams exist between the body 2 and the node area 3, each welding seam shrinks by 2mm according to the convention, the shrinkage delta D of the welding seam on the whole circumference is about 184mm, the radius delta R of the circumference needs to be increased by about 30mm, namely, the space coordinate of the node area 3 of the pressure ring needs to be offset by 30mm outside the circumference. Thus, eventually after welding, the integral pressure ring will shrink back to the design size.
With the flange face pre-installation between two conventional clamping ring roof beams, change the whole tailor-welding between clamping ring roof beam body and the node area into, effectual close adherence degree, the concentricity problem of avoiding conventional pressure ring flange face pre-installation in-process has also solved the problem that tip space flange face is difficult to the location when this type of space pressure ring structure is made alone simultaneously.
Through the circumference method, the whole coordinates of the compression ring beam are subjected to outward expansion and deviation, so that the whole ring of compression ring beam meets the design size requirement after welding shrinkage, and the processing precision is effectively improved.
Claims (1)
1. A manufacturing process of a pressure ring of a bowl-shaped roof steel structure is characterized by comprising the following steps:
step 1: after the pressure ring flange surfaces are blanked, numbering is carried out independently, two adjacent pressure ring flange surfaces are numbered into a group, drilling holes are overlapped and drilled, and relative position marking is carried out, so that after the drilling holes are disassembled and combined again, the relative position is unchanged, and hole position dislocation caused by relative rotation can be avoided;
step 2: the flange surface of the pressure ring and the pressure ring body are relatively and vertically arranged, and the flange surface of the pressure ring and the pressure ring body are welded together by spot welding to form a combined piece;
and step 3: recombining the structure of the pressure ring, and screwing the two adjacent pressure ring bodies by using high-strength bolts through the flange surface of the tension ring;
and 4, step 4: in the assembly formed in the step 3, welding a welding seam between the flange surface of the pressure ring and the pressure ring body;
and 5: in the whole pressure ring, all the flange surfaces and the pressure ring bodies of the pressure ring belong to space parts, but the central surface of a pressure ring node area is perpendicular to the ground, so that in the subsequent final assembly process, the pressure ring node area is placed in a pre-assembly field according to space ground sample coordinates, and then a combined piece formed by two adjacent flange surfaces and two sections of pressure ring bodies is sequentially hoisted and inserted into the pressure ring node area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734579.XA CN111889974A (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of pressure ring of bowl-shaped roof steel structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734579.XA CN111889974A (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of pressure ring of bowl-shaped roof steel structure |
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| Publication Number | Publication Date |
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| CN111889974A true CN111889974A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010734579.XA Pending CN111889974A (en) | 2020-07-28 | 2020-07-28 | Manufacturing process of pressure ring of bowl-shaped roof steel structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814247A (en) * | 2021-01-04 | 2021-05-18 | 上海市机械施工集团有限公司 | Method for installing middle-mounted compression ring spoke type tensioning structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203383335U (en) * | 2013-07-16 | 2014-01-08 | 孙建国 | Section steel splicing joint structure |
| CN105386524A (en) * | 2015-12-03 | 2016-03-09 | 东南大学 | Bolt connecting hollow spherical joint of steel grid |
| CN106624639A (en) * | 2016-12-09 | 2017-05-10 | 广西建工集团第五建筑工程有限责任公司 | Manufacturing and hoisting method for pre-spliced short joint of large valve and large-diameter pipeline |
| CN109079281A (en) * | 2018-09-13 | 2018-12-25 | 武汉冶钢结构有限责任公司 | The welding method of spherical tank manhole flange and manhole flange |
| CN110173045A (en) * | 2018-11-27 | 2019-08-27 | 襄阳忠良工程机械有限责任公司 | A kind of steel construction box beam connecting structure |
-
2020
- 2020-07-28 CN CN202010734579.XA patent/CN111889974A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203383335U (en) * | 2013-07-16 | 2014-01-08 | 孙建国 | Section steel splicing joint structure |
| CN105386524A (en) * | 2015-12-03 | 2016-03-09 | 东南大学 | Bolt connecting hollow spherical joint of steel grid |
| CN106624639A (en) * | 2016-12-09 | 2017-05-10 | 广西建工集团第五建筑工程有限责任公司 | Manufacturing and hoisting method for pre-spliced short joint of large valve and large-diameter pipeline |
| CN109079281A (en) * | 2018-09-13 | 2018-12-25 | 武汉冶钢结构有限责任公司 | The welding method of spherical tank manhole flange and manhole flange |
| CN110173045A (en) * | 2018-11-27 | 2019-08-27 | 襄阳忠良工程机械有限责任公司 | A kind of steel construction box beam connecting structure |
Non-Patent Citations (1)
| Title |
|---|
| 吕鑫 等: "马鞍形屋面钢结构环梁法兰盘施工技术", 《施工技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814247A (en) * | 2021-01-04 | 2021-05-18 | 上海市机械施工集团有限公司 | Method for installing middle-mounted compression ring spoke type tensioning structure |
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Application publication date: 20201106 |
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