A jig device for installation of a large-span beam string structure of a steel structure commercial building

Abstract

The utility model belongs to the steel structure building construction technical field, concretely relates to a cradle device for steel structure commercial building large -span beam -string structure installation, including crossbeam, vertical section steel and inclined brace, the crossbeam is divided into upper crossbeam and lower crossbeam, the upper crossbeam is used to bear the vertical load of beam -string structure when assembling on the ground, the lower crossbeam sets up in the ground, the vertical section steel sets up in pairs, and the top support of vertical section steel sets up in pairs is supported in the upper crossbeam both sides, the bottom of vertical section steel is connected with the lower crossbeam, the inclined brace is connected between the vertical section steel and the lower crossbeam and / or the ground, is used for strengthening the stability of cradle device. This cradle device can realize the ground safe assembly of large -span beam -string structure, avoids the risk of aerial work, shortens construction period, and the structure is stable and reliable, and is convenient to assemble and disassemble, and is economic and practical.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure building construction technology, specifically relating to a jig device for installing large-span tensioned beams in steel structure commercial buildings. Background Technology

[0002] With the rapid development of urban society and economy, newly built commercial and residential complexes have gradually become a popular leisure and entertainment destination for contemporary people. Large steel-structured commercial centers and other public buildings feature novel and unique designs and diverse forms of expression. Steel structures, due to their high strength, light weight, and fast construction speed, are widely used in various types of buildings, especially in large-span commercial and public buildings. Tensioned beams, as a highly efficient large-span structural form, are increasingly used in modern architecture due to their unique load-bearing system and aesthetically pleasing design.

[0003] However, in multi-story commercial buildings, some tensioned beams not only have large spans (e.g., up to 25 meters or more) but are also installed at high positions, which brings many challenges to construction. Traditional tensioned beam installation methods usually rely on the erection of ground-mounted scaffolding or high-altitude work platforms to assemble and weld components in a dispersed manner at the design elevation. This method has the following significant problems: (1) High construction difficulty and low safety: High-altitude work itself has a large risk. For the assembly of large-span, heavy tensioned beams, the operating space is limited, and the processes of component hoisting, alignment, and welding are difficult and prone to safety accidents. If the ground-mounted scaffolding is erected too high, its own stability is also difficult to guarantee; (2) Long construction period and high cost: Erecting and dismantling a large number of scaffoldings requires a lot of manpower and time. High-altitude work efficiency is low, which leads to the extension of the overall construction period. At the same time, the rental or purchase of scaffolding materials and the labor costs of erection and dismantling also significantly increase the project cost; (3) Difficult quality control: The high-altitude work environment has an adverse effect on the control of welding quality, installation accuracy, etc.

[0004] Therefore, how to safely, efficiently, and economically complete the installation of large-span tensioned beams is a technical problem that urgently needs to be solved in the field of steel structure construction. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a simple, easy-to-operate, safe, reliable, economical, and efficient jig device for installing large-span tensioned beams in steel structure commercial buildings.

[0006] Technical Solution: The present invention discloses a frame device for installing large-span tensioned beams in steel structure commercial buildings, comprising a horizontal beam, vertical steel sections, and diagonal braces; the horizontal beam is divided into an upper horizontal beam and a lower horizontal beam, the upper horizontal beam being used to bear the vertical load of the tensioned beam during ground assembly, and the lower horizontal beam being disposed on the ground; the vertical steel sections are arranged in pairs, with the tops of the paired vertical steel sections supporting both sides of the upper horizontal beam, and the bottoms of the vertical steel sections connecting to the lower horizontal beam; the diagonal braces are diagonally connected between the vertical steel sections and the lower horizontal beam and / or the ground, for enhancing the stability of the frame device.

[0007] Furthermore, the lower crossbeam is a steel section with specifications of 300*300*10*15 and a length of not less than 4m.

[0008] Furthermore, the upper crossbeam is formed by welding two No. 12 channel steels together through the web, and both ends of the upper crossbeam are welded to the flanges of the vertical steel.

[0009] Furthermore, the vertical steel section is a steel section with a specification of 300*300*10*15, and the top elevation of the vertical steel section is not lower than the top surface elevation of the tension beam to be installed.

[0010] Furthermore, the diagonal bracing includes a transverse diagonal bracing and a longitudinal diagonal bracing. The transverse diagonal bracing is connected between the top of the vertical steel section and the lower crossbeam, and the longitudinal diagonal bracing is connected between the top of the vertical steel section and the ground. The bottom of the longitudinal diagonal bracing is provided with positioning steel bars for anchoring it to the concrete ground.

[0011] Furthermore, both the transverse and longitudinal diagonal braces are constructed of 12# channel steel and are securely welded to the vertical steel section.

[0012] Furthermore, the number of the transverse diagonal braces is not less than two, and the number of the longitudinal diagonal braces is not less than four.

[0013] Furthermore, the difference between the length of the upper crossbeam and the width of the tension beam is not less than 500mm, and the welding between the upper crossbeam and the flange of the vertical steel section is a full weld, with a fillet weld height of not less than 8mm.

[0014] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows:

[0015] (1) Improve construction safety: The traditional high-altitude decentralized assembly operation is transferred to the ground. The jig device provides a stable and reliable support platform for the ground assembly of the tensioned beam, which fundamentally avoids the risks of high-altitude operation and significantly improves construction safety.

[0016] (2) Shorten the construction period: There is no need to erect and dismantle a large number of ground-mounted scaffolding. The efficiency of ground assembly is much higher than that of high-altitude operation. After the tension beam is assembled, it can be hoisted into place as a whole, which greatly shortens the installation period.

[0017] (3) Reduced construction costs: Saved a lot of scaffolding material rental / purchase costs and labor costs for erection and dismantling. At the same time, the components of the formwork device (such as steel sections and channel steel) can be made from existing waste materials or reusable materials on the construction site (such as steel sections for support replacement in deep foundation pit demolition, channel steel for under-support of cantilever scaffolding in high-rise residential buildings, etc.), further reducing material costs.

[0018] (4) Ensure construction quality: The ground working environment is more conducive to ensuring the assembly accuracy and welding quality of the tensioned beam.

[0019] (5) Easy to operate and highly applicable: The frame device has a simple structure, is easy to install and dismantle, and can be flexibly arranged according to the size and weight of the tension beam.

[0020] (6) Green and environmentally friendly, and economical: The frame device can be reused repeatedly, which reduces the generation of construction waste, meets the requirements of green construction, and has good economic benefits. Attached Figure Description

[0021] Figure 1 An elevation view of the frame device provided in this embodiment of the utility model supporting the tensioned beam for ground assembly;

[0022] Figure 2 This is a cross-sectional view of a single tire frame device in an embodiment of the present invention. Figure 1 (Displays horizontal diagonal bracing);

[0023] Figure 3 This is a cross-sectional view of a single tire frame device in an embodiment of the present invention. Figure 2 (Showing longitudinal diagonal bracing).

[0024] The markings in the diagram are as follows: 1-Tensioned beam; 2-Secondary roof beam; 3-Strut; 4-High vanadium cable; 5-Frame device; 51-Upper crossbeam; 52-Vertical steel section; 53-Horizontal brace; 54-Lower crossbeam; 55-Longitudinal brace; 56-∮20 positioning steel bar. Detailed Implementation

[0025] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0026] Example 1: Please refer to Figures 1 to 3 The fixture device 5 provided by this utility model for installing large-span tensioned beams in steel structure commercial buildings includes an upper crossbeam 51, a lower crossbeam 54, a vertical steel section 52, a transverse diagonal brace 53, and a longitudinal diagonal brace 55.

[0027] like Figure 2 and Figure 3 As shown, the lower crossbeam 54 is made of 300*300*10*15 steel, with a length determined according to the actual site conditions, but not less than 4 meters, to ensure stable support at the bottom of the support frame 5. The lower crossbeam 54 is placed directly on the concrete ground, maintaining stability through its own weight and connection with the vertical steel 52. The material and specific dimensions of the lower crossbeam 54 can be adjusted according to actual load-bearing requirements.

[0028] The bottom of the vertical steel section 52 is welded to the lower crossbeam 54. The vertical steel section 52 is preferably made of steel with dimensions of 300*300*10*15 mm. The number of vertical steel sections 52 can be determined based on the support point requirements of the tension beam 1 and the load-bearing capacity of a single jig unit. Typically, two vertical steel sections can be installed in one jig unit. The top elevation of the vertical steel section 52 is designed to be no lower than the top surface of the tension beam 1 to be installed, to ensure effective support for the tension beam 1.

[0029] The upper crossbeam 51 is connected to the top of the vertical steel section 52. The upper crossbeam 51 is formed by butt-welding two No. 12 channel steels together through their webs, creating a composite beam with good load-bearing capacity. Both ends of the upper crossbeam 51 are welded to the flanges of the vertical steel section 52. To ensure a strong connection, the welds must be full welds, and the fillet weld height must not be less than 8mm. The length of the upper crossbeam 51 should be determined based on the width of the tensioned beam 1, with a difference of not less than 500mm, to facilitate the assembly of the tensioned beam 1 and provide a sufficient and stable support surface. The upper crossbeam 51 is directly used to bear the weight of the tensioned beam 1 during ground assembly.

[0030] To improve the overall stability of the jig frame device 5, transverse diagonal braces 53 and longitudinal diagonal braces 55 are installed between the vertical steel sections 52. Both the transverse diagonal braces 53 and the longitudinal diagonal braces 55 are made of 12# channel steel and welded to the vertical steel sections 52. Depending on the specific dimensions of the jig frame device, there are at least two transverse diagonal braces 53, primarily resisting lateral forces along the width of the tension beam 1; and at least four longitudinal diagonal braces 55, primarily resisting lateral forces along the length of the tension beam 1.

[0031] To further enhance the stability of the jig assembly 5, particularly its resistance to overturning, the bottom of the longitudinal brace 55 extends to the concrete ground, where a φ20 positioning steel bar 56 is installed. The positioning steel bar 56 is pre-embedded or embedded in the concrete ground, and the bottom of the longitudinal brace 55 is securely connected to it (e.g., by welding or anchoring via connectors), thereby effectively anchoring the jig assembly 5 to the ground.

[0032] When using the jig device 5 provided by this utility model to install the tensioned beam 1, firstly, several sets of jig devices 5 are arranged on a flat concrete ground according to the size of the tensioned beam 1 and the position of the support points. Then, the various components of the tensioned beam 1 (such as the upper chord, lower chord 4, strut 3, etc.) are placed on the upper crossbeam 51 of the jig device 5 for ground assembly and welding. After the tensioned beam 1 is assembled as a whole, it is lifted off the jig device 5 by a tower crane or truck crane and transported to the designed installation position of the building, where it is connected and fixed to the steel columns of the main structure or the secondary beams 2 of the roof. After the tensioned beam 1 is installed, the jig device 5 can be easily disassembled, and its components can be recycled for other projects or reused next time.

[0033] The structural steel and channel steel components that make up the frame device 5 can utilize reusable materials found on the construction site, such as the support steel removed after the completion of deep foundation pit projects, or the lower support channel steel of turnbuckle cantilever scaffolding used in high-rise residential construction. This not only shortens the material procurement and delivery time but also effectively reduces material costs and achieves resource recycling.

[0034] This utility model completely eliminates the safety hazards of high-altitude assembly by transferring the assembly of tensioned beams from high altitudes to the ground, avoiding accidents such as falls from heights and being struck by objects, thus fundamentally improving construction safety; it significantly shortens the construction period: eliminating the need for tall scaffolding systems saves considerable time on scaffolding erection and dismantling; ground assembly is highly efficient and convenient, shortening the overall construction period; it significantly reduces construction costs: reducing the use of a large amount of high-altitude scaffolding materials lowers material rental costs; on-site materials can be sourced locally, further reducing costs; and improved labor efficiency reduces labor costs; it also adopts... The steel frame combined with the diagonal bracing structure forms a stable spatial truss that can reliably withstand various loads during the assembly of tensioned beams, including self-weight, wind load, and construction load. The jig device has a simple structure and is easy and quick to install and dismantle. There is ample ground space for operation, which facilitates the operation of machinery and personnel, greatly improving construction efficiency. The components are recyclable, which is in line with the concept of green construction. Materials can be sourced locally, reducing transportation costs and environmental impact. The overall economic benefits are significant. It is suitable for the installation of various large-span tensioned beam structures, especially tensioned beams with spans of 25m or more commonly found in commercial buildings, and has good potential for widespread application.

[0035] Through the above technical solution, this utility model effectively solves the technical problems existing in the installation of traditional large-span tensioned beams, and provides a safe, efficient and economical technical solution for steel structure building construction.

[0036] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A support frame device for installing large-span tensioned beams in steel structure commercial buildings, characterized in that, Includes horizontal beams, vertical steel sections, and diagonal braces; The crossbeam is divided into an upper crossbeam and a lower crossbeam. The upper crossbeam is used to bear the vertical load of the tensioned beam when it is assembled on the ground, and the lower crossbeam is set on the ground. The vertical steel sections are arranged in pairs, with the tops of the paired vertical steel sections supported on both sides of the upper crossbeam, and the bottoms of the vertical steel sections connected to the lower crossbeam. Diagonal bracing, diagonally connected between the vertical steel section and the lower crossbeam and / or the ground, is used to enhance the stability of the jig assembly.

2. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 1, characterized in that, The lower crossbeam is a 300*300*10*15 steel section with a length of not less than 4m.

3. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 1 or 2, characterized in that, The upper crossbeam is formed by welding two No. 12 channel steels together through the web, and both ends of the upper crossbeam are welded to the flanges of the vertical steel.

4. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 1, characterized in that, The vertical steel section is a 300*300*10*15 steel section, and the top elevation of the vertical steel section is not lower than the top elevation of the tension beam to be installed.

5. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 1, characterized in that, The diagonal bracing includes a horizontal diagonal bracing and a vertical diagonal bracing. The horizontal diagonal bracing is connected between the top of the vertical steel section and the lower crossbeam, and the vertical diagonal bracing is connected between the top of the vertical steel section and the ground. The bottom of the vertical diagonal bracing is provided with positioning steel bars for anchoring it to the concrete ground.

6. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 5, characterized in that, Both the transverse and longitudinal diagonal braces are made of 12# channel steel and are firmly welded to the vertical steel.

7. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 5, characterized in that, The number of transverse diagonal braces shall not be less than two, and the number of longitudinal diagonal braces shall not be less than four.

8. The jig device for installing large-span tensioned beams in steel structure commercial buildings according to claim 3, characterized in that, The difference between the length of the upper crossbeam and the width of the tension beam is not less than 500mm, and the welding between the upper crossbeam and the flange of the vertical steel is a full weld with a fillet weld height of not less than 8mm.

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