Metallurgical equipment full bolt connection joint steel structure manufacturing and construction method

Abstract

The invention discloses a metallurgical equipment full bolt connection joint steel structure manufacturing and construction method, and belongs to the technical field of building construction. The method comprises the steps of H-shaped steel blanking, hole forming, secondary assembling, welding and all-dimensional horizontal type overall pre-assembling of components. The device has the advantages that the device is easy and convenient to manufacture, and machining and manufacturing precision and efficiency are improved while quality is guaranteed. Therefore, the on-site installation efficiency of the full-bolt joint of the assembly type steel structure is improved, and the one-time perforation percent of pass of the bolts on the installation site is improved. And the requirements of green construction and personnel safety operation are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and in particular provides a method for manufacturing and constructing a fully bolted node steel structure of metallurgical equipment, which is suitable for manufacturing and constructing assembled fully bolted node steel structures such as steel columns, steel beams, and supports in steel structures. Background Art

[0002] Prefabricated buildings are a trend in the development of the construction industry, and China has achieved certain results in the research and development of prefabricated buildings. Prefabricated buildings have played an important role in promoting green development and high-quality development in urban and rural construction.

[0003] In order to improve the efficiency of bolt penetration at the installation site, pre-assembly is generally used in the steel structure installation. However, due to the small assembly site and the height limit of the working space, conventional pre-assembly cannot be achieved. At the same time, during pre-assembly, it is easy to cause errors in the bolt hole offset due to welding shrinkage deformation, resulting in the inability of the bolt to pass through the bolt hole smoothly. Summary of the invention

[0004] The purpose of the present invention is to provide a method for manufacturing and constructing a fully bolted node steel structure of metallurgical equipment, which can effectively solve the problem of limited assembly space. The bolts can be smoothly passed through the bolt holes, reducing or avoiding the expansion of the bolt holes caused by welding deformation. It is suitable for the manufacturing and construction of bolted nodes such as steel columns, steel beams, and supports of assembled steel structures.

[0005] The technology of the present invention mainly includes H-shaped steel cutting, hole making, secondary assembly, welding, and all-round horizontal pre-assembly of components. The specific operation steps are as follows:

[0006] 1. H-beam cutting: A large-section H-beam cutting device (patent number ZL202322367932.8) is used (see Figure 1 ) The large-section H-beam cutting device 1 can move forward and backward on the track, and the cutting device head 2 can move left and right on the slide rail to cut the large-section H-beam 3. This cutting device is easy to operate and can be moved according to the operation requirements. It realizes fast cutting and improves efficiency, and ensures the cutting accuracy and surface cutting quality of the H-beam.

[0007] 2. Hole making: A device is used to improve the one-time penetration rate of the end bolts of the welded H-shaped steel wing web (see Figure 2 ) This device is welded from three steel plates, which are the web, upper wing and lower wing. The web, upper wing and lower wing have holes. The holes correspond to the steel corbel wing and web holes of the component. Bolts are used to fix the steel corbel wing and web when in use. The assembly of this device ensures the geometric size of the steel corbel. After fixing, welding can control welding deformation and avoid the influence of welding shrinkage on the hole position.

[0008] 3. Secondary assembly and welding of components: To ensure the penetration rate of bolt holes, the welding sequence of welds between components should be considered comprehensively. The supporting brackets on steel columns and steel beams are not welded to the steel columns and steel beams for the time being ( Figure 3 ) is used to adjust the bolt hole assembly accuracy. Welding can be performed after the pre-assembly dimensions are correct. Straight brackets and other stiffening plates of steel columns and beams can be welded.

[0009] 4. All-round horizontal overall pre-assembly:

[0010] (1) Division of assembly units. H-shaped steel columns, steel beams, and supports are set up on a work frame on a hard cement floor and pre-assembled on the frame. According to the height of the steel column, the components below the height of the first and second sections of the steel column are divided into one assembly unit, and the components inside the second, third, and fourth sections of the column are divided into one assembly unit.

[0011] (2) Pre-assembly process. After the front, left, back, and right sides of the first unit are assembled, the components of the second unit are assembled (Note: the components in the four planes are assembled in four steps). After all the components in the first unit are assembled and accepted, they are dismantled, and then all the components of the second unit are pre-assembled. When dismantling, make a record of the component relocation.

[0012] The advantages of the present invention are that the device is easy to manufacture, and the quality is guaranteed while the processing and manufacturing accuracy and efficiency are improved. Thus, the on-site installation efficiency of the fully bolted nodes of the assembled steel structure is improved, and the one-time perforation qualification rate of the bolts at the installation site is improved, achieving the requirements of green construction and safe operation of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a large-section H-shaped steel cutting device.

[0014] Figure 2 The utility model relates to a device for improving the one-time penetration rate of the end bolts of the welded H-shaped steel wing web.

[0015] Figure 3 The supporting corbels on the steel beam are not welded to the steel beam yet.

[0016] Figure 4 Pre-assembly drawings of steel columns, beams and supports in the first unit.

[0017] Figure 5 Pre-assembly drawings of steel columns, steel beams and supports in the second unit.

[0018] In the figure, there are a large-section H-shaped steel cutting device 1, a cutting device head 2, a large-section H-shaped steel 3, a supporting steel corbel 4, a steel beam body 5, a first-section steel column 6, a second-section steel column 7, a steel beam 8, a steel support 9, a third-section steel column 10, and a fourth-section steel column 11. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention adopts the following steps for construction:

[0020] 1. H-beam cutting: A large-section H-beam cutting device 1 is used. The cutting device is easy to operate and can be moved according to the operation requirements. The H-beam cutting device is used for cutting, and the deviation in the length direction is 0∽-1mm. The sawing efficiency is doubled compared with that of the CNC band sawing machine, and fast cutting is achieved, which ensures the cutting accuracy and surface cutting quality of the large-section H-beam 3.

[0021] 2. Hole making: To ensure the hole making accuracy of high-strength bolt holes, the H-beam support is drilled by a three-dimensional CNC drilling machine, and the connecting plate is drilled by a CNC plane. Develop a device to improve the one-time penetration rate of the end bolts of the welded H-beam wing web ( Figure 2 ), the device locates the assembly size of the vertical node plate (i.e. the hole size connected to the H-type support wing plate) with the hole size of the node plate plane (i.e. the hole size connected to the H-type support web); the device mold assembly ensures the geometric size, and fixed welding can control welding deformation and avoid the influence of welding shrinkage on the hole position.

[0022] 3. Secondary assembly and welding of components: To ensure the penetration rate of bolt holes, the supporting steel brackets 4 on the steel columns and beams are not welded to the steel column and beam bodies 5 for the time being (reason analysis for not welding for the time being: the support is subject to the size constraints in both length and height directions and the brackets are combined welded parts). They are used to adjust the assembly accuracy of the bolt holes, and welding will be performed after the pre-assembly dimensions are correct. The straight brackets of steel columns and beams (reason analysis for being weldable: the straight brackets are only subject to the size constraints in the length direction and the brackets are machined finished parts) and other stiffening plates can be welded.

[0023] All-round horizontal overall pre-assembly:

[0024] (1) Division of assembly units. H-shaped steel columns, steel beams, and supports are set up on a work frame on a hard cement floor (the flatness of the platform surface is 0∽-2mm), and pre-assembled on the frame. According to the height of the steel column, the components below the height of the first section steel column 6 and the second section steel column 7 are divided into an assembly unit ( Figure 4 ), the second section column 7, the third section steel column 10, and the fourth section steel column 11 are divided into an assembly unit ( Figure 5 ).

[0025] (2) Pre-assembly process. First, assemble all the steel beams 8 and steel supports 9 in the first plane of the first section steel column 6 and the second section steel column 7; secondly, assemble all the steel beams 8 and steel supports 9 in the second plane of the first section steel column 6 and the second section steel column 7; then assemble all the steel beams 8 and steel supports 9 in the third plane of the first section steel column 6 and the second section steel column 7; finally, assemble all the steel beams 8 and steel supports 9 in the fourth plane of the first section steel column 6 and the second section steel column 7. After the front, back, left and right sides of the first section steel column 6 and the second section steel column 7 are assembled, assemble all the steel beams 8 and steel supports 9 in the second section steel column 7, the third section steel column 10 and the fourth section steel column 11 (Note: the components in the four planes are assembled in four times). After all the components in the first unit are assembled and accepted, they are dismantled, and then pre-assemble all the components in the second unit. Keep a record of the component relocation during dismantling. When assembling each unit component, the corner column is used as the reference point. The components between one surface axis are assembled first. After acceptance, the components are removed and the pre-assembly of the components of other surface axis are carried out in turn to ensure that the components within the axis of all positions are assembled in place.

Claims

1. A method for manufacturing and constructing a fully bolted node steel structure for metallurgical equipment, characterized in that: include: H-beam cutting, hole making, secondary assembly, welding, all-round horizontal pre-assembly of components; the specific operation steps are as follows: (1) H-beam cutting: A large-section H-beam cutting device is used, which moves forward and backward on the track, and the cutting device head (2) moves left and right on the slide rail to cut the large-section H-beam; the cutting accuracy and surface cutting quality of the H-beam are ensured; (2) Hole making: A device is used to improve the one-time penetration rate of the bolts at the end of the welded H-shaped steel wing web. The device is welded by three steel plates, which are the web, the upper wing, and the lower wing. The web, the upper wing, and the lower wing are all provided with holes. The openings correspond to the holes of the steel corbel wing plate and the web plate of the component, and are fixed with bolts to the steel corbel wing plate and the web plate when in use; the geometric dimensions of the steel corbel are ensured by assembling with this device, and welding after fixing controls welding deformation and avoids the influence of welding shrinkage on the hole position; (3) Secondary assembly and welding of components: The supporting brackets on the steel columns and steel beams are not welded to the steel columns and steel beams for the time being, but are used to adjust the assembly accuracy of the bolt holes. After the pre-assembly dimensions are correct, the straight brackets and stiffening plates of the steel columns and steel beams are welded; (4) All-round horizontal overall pre-assembly: 1) Assembly unit division: H-shaped steel columns, steel beams, and supports are set up on a tooling frame on a hard cement floor and pre-assembled on the frame; according to the height of the steel column, the components below the height of the first and second sections of the steel column are divided into one assembly unit, and the components inside the second, third, and fourth sections of the column are divided into one assembly unit; 2) Pre-assembly process. After the front, left, back and right sides of the first unit are assembled, the components in the second unit are assembled. The components in the four planes are assembled in four times. After all the components in the first unit are assembled and accepted, they are dismantled, and then all the components in the second unit are pre-assembled. When dismantling, make a record of the component relocation.

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