A large-span combined steel structure corridor fast assembly structure and corridor system under low temperature environment

Abstract

The utility model relates to the field of steel structure assembly construction, specifically is a kind of low-temperature environment under super-large span combined steel structure veranda quick assembly structure and veranda system. Including: be located on the both sides existing structure's cylinder-shaped structure;Be located on the cylinder-shaped structure top rectangular pipe or round pipe support;Fixed in the existing structure frame beam's hoop steel plate, ear plate is welded on the hoop steel plate and is locked with the frame beam on existing structure by tension bolt;Install in the hoop steel plate's temporary steel frame;The steel wire rope connecting cylinder-shaped structure top and temporary steel frame, the steel wire rope end is fixed on the pre-buried ring of existing structure.The utility model completely eliminates the delay of construction period caused by strength waiting and artificial mechanical nest work problem guarantee structure safety and economy win-win.

Description

Technical Field

[0001] This utility model relates to the field of steel structure assembly and construction, specifically a rapid assembly structure and system for ultra-large span combined steel structure corridors in low-temperature environments. Background Technology

[0002] With the continuous improvement of people's aesthetic standards, design schemes for high-altitude connecting corridors in large public buildings are constantly emerging in architectural plans. Since concrete corridors are mostly constructed using tall formwork scaffolding, resulting in high construction costs, steel structure corridors are the main structural form for realizing large-span aerial connecting corridors. The installation methods for steel structure corridors mainly include traditional high-altitude assembly and welding, and ground assembly and overall hydraulic lifting. Regardless of the installation method, the end nodes of the steel structure corridor must meet the C25 concrete strength requirement before installation, and then be connected to the steel plates pre-embedded during the construction of the main structure.

[0003] Conventional construction methods require the steel structure corridor to be assembled and welded at high altitudes after the construction of the cylindrical structures on both sides is completed and the concrete strength is sufficient for installation. In low-temperature environments, the concrete strength increases slowly, which directly restricts the overall construction progress of the steel structure corridor, resulting in a backlog of labor and materials and increasing construction costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a rapid assembly structure and system for ultra-large span combined steel structure corridors in low-temperature environments.

[0005] This utility model adopts the following technical solution: a rapid assembly structure for a super-large span composite steel structure corridor in a low-temperature environment, comprising: A cylindrical structure built on the existing structures on both sides; A rectangular or circular tube support is provided at the top of the cylindrical structure; A clamping steel plate is fixed to the existing structural frame beam, and ear plates are welded to the clamping steel plate and locked to the existing structural frame beam by tie bolts; Temporary steel frame used for installing clamp steel plates; A steel wire rope connects the top of the cylindrical structure to the temporary steel frame, with the end of the steel wire rope fixed to a pre-embedded ring on the existing structure.

[0006] In some embodiments, the tube-shaped structure is composed of steel-concrete composite columns, steel-concrete composite shear walls, and steel assemblies. The steel-concrete composite columns stand vertically on the foundation, and the steel-concrete composite shear wall is connected to the steel-concrete composite columns. Multiple steel beams connect the steel-concrete composite columns and the steel-concrete composite shear wall on both sides in the horizontal direction, forming a closed lateral force resisting tube.

[0007] In some embodiments, through holes are opened on both sides of the steel plate of the steel plate-concrete composite shear wall, and the reinforcing bars pass through the through holes to achieve double-sided connection; the stirrups of the steel-concrete column pass through the through holes and are welded to the column surface for fixation.

[0008] In some embodiments, the clamping steel plate is provided with multiple through bolt holes for connecting tie bolts.

[0009] In some embodiments, the temporary steel frame includes at least two vertical steel pipe columns, adjacent steel pipe columns are connected by a horizontal square tube, and the two ends of the diagonal support are bolted to the top of the steel pipe column and the middle of the horizontal square tube, respectively, to form a spatially stable truss.

[0010] In some embodiments, a base plate is welded to the bottom of the steel pipe columns of the temporary steel frame, and the base plate is fixed to the embedded plate or the top surface of the frame beam by chemical anchors.

[0011] A connecting corridor system, comprising: Rapid assembly structure for ultra-large span combined steel structure corridors in low-temperature environments; The steel structure connecting corridor is erected between the two cylindrical structures. The steel structure connecting corridor is formed by splicing together long and short steel beams in a grid. The steel truss floor deck is laid on the steel structure corridor, and its ends are supported by the flanges of the steel beams.

[0012] In some embodiments, steel reinforcement bars are placed above the steel truss floor slab and concrete mixed with early-strength antifreeze agent is poured to form a composite floor slab.

[0013] In some embodiments, a triangular support frame is also provided on the steel structure corridor. The triangular support frame is composed of horizontal angle steel and diagonal angle steel bolted together and is fixed to the stiffening rib connecting plate on the steel structure corridor by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model meets the construction requirements of large-span steel structure corridors in low-temperature environments. Through node design, it utilizes existing structures and adds reinforcement measures to ensure the continuity of the process, shorten the construction period, and reduce construction costs.

[0015] This utility model has a simple structure and fully utilizes the advantages of prefabricated steel structures in the factory and efficient on-site splicing. Whether it is a steel structure corridor or a temporary reinforcement support frame, it can achieve the effect of rapid installation and dismantling.

[0016] This utility model adopts a modular parametric design, using the steel beams of the steel structure corridor as the support points of the steel truss floor deck and its triangular supports, avoiding the risks of erecting scaffolding for ultra-high and large-span corridors, saving labor, material, and equipment costs, and ensuring operational safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the temporary reinforcement support of this utility model; Figure 3 This is a schematic diagram of the steel plate fixing for the frame beam of this utility model; Figure 4 This is a schematic diagram of the connection node between the steel wire rope and the frame beam of this utility model; Figure 5 This is a schematic diagram of the connection node between the steel wire rope and the steel column of this utility model; Figure 6 This is a schematic diagram of a triangular support frame; In the diagram: 1-Steel structure connecting corridor; 2-Tube-shaped structure; 3-Steel-concrete composite column; 4-Steel-concrete composite shear wall; 5-Steel beam; 6-Long-direction steel beam; 7-Short-direction steel beam; 8-Rectangular or circular tube; 9-Steel plate; 10-Ear plate; 11-Tie bolt; 12-Embedded ring; 13-Embedded plate; 14-Steel pipe column; 15-Diagonal bracing; 16-Horizontal square tube; 17-Temporary steel frame; 18-Triangular bracing; 19-Reinforced truss floor deck; 20-Reinforcing bar; 21-Concrete; 22-Steel wire rope; 23-Stiffening rib connecting plate; 24-Bolt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1: like Figure 1 As shown, a rapid assembly structure for a super-large span combined steel structure corridor in a low-temperature environment includes: a cylindrical structure 2 installed on the existing structures on both sides; a rectangular or circular tube support 8 installed on the top of the cylindrical structure 2; a clamping steel plate 9 fixed to the frame beam of the existing structure, with ear plates 10 welded to the clamping steel plate 9 and locked to the frame beam of the existing structure by tie bolts 11; a temporary steel frame 17 installed on the clamping steel plate 9; and a steel wire rope 22 connecting the top of the cylindrical structure 2 and the temporary steel frame 17, with the end of the steel wire rope 22 fixed to a pre-embedded ring 12 of the existing structure.

[0020] The cylindrical structure 2 is assembled from steel-concrete composite columns 3, steel-concrete composite shear walls 4, and steel sections 5. The steel-concrete composite column 3 stands vertically on the foundation, and the steel-concrete composite shear wall 4 is connected to the steel-concrete composite column 3. Multiple steel beams 5 connect the steel-concrete composite column 3 and the steel-concrete composite shear wall 4 on both sides in the horizontal direction to form a closed lateral force resisting tube.

[0021] Rectangular or circular tube supports are installed between the tops of the steel columns 3 of the cylindrical structure 2. 30mm holes are made in the upper part of the existing structural frame beams, and tie bolts 11 are used to fix the clamping steel plate 9. The steel plate clamping method is used for fixation. Figure 3 Ear plates 10 are welded onto the clamping steel plate 9, and steel wire rope 22 is pulled from the top of the steel column 3 to the ear plates 10. Figure 4-5 ); Embedded plates 13 are installed on the upper / lower part of the existing frame beams, and rectangular columns 14 are installed. Diagonal supports 15 are installed between the columns 14. For structures without frame beams at the top, temporary steel frames 17 are installed on the embedded plates 13; steel wire ropes 22 are tied behind the temporary steel frames 17, and the fixing points are embedded rings 12; steel wire ropes 22 are tied from the top of the tube-shaped structure 2 towards the temporary steel frames 17, extending to the embedded rings 12.

[0022] The steel plate of the steel-concrete composite shear wall 4 has through holes on both sides, and the reinforcing bars 20 pass through the through holes to achieve double-sided connection; the stirrups of the steel-concrete column 3 pass through the through holes and are welded to the column surface for fixation.

[0023] Specifically, longitudinal and transverse reinforcing bars 20 are configured on the outside of the steel plate concrete composite shear wall 4 and the steel-concrete composite column 3 according to the structural stress requirements: through holes are reserved in the steel plate concrete composite shear wall 4 at the position of the tie hook to tie the reinforcing bars 20 on both sides of the steel plate wall; the stirrups of the steel-concrete composite column 3 adopt the through hole + welding method to meet the structural requirements; after the binding is completed, concrete 21 is poured, and early strength antifreeze agent is added to the concrete for low temperature operation.

[0024] The clamping steel plate 9 has multiple through bolt holes for connecting tie bolts 11.

[0025] The temporary steel frame 17 includes at least two vertical steel pipe columns 14, which are connected by a horizontal square tube 16. The two ends of the diagonal support 15 are bolted to the top of the steel pipe column 14 and the middle of the horizontal square tube 16, respectively, to form a spatially stable truss.

[0026] The bottom of the steel pipe column 14 of the temporary steel frame 17 is welded with a base plate, which is fixed to the embedded plate 13 or the top surface of the frame beam by chemical anchors.

[0027] Example 2: like Figure 2 As shown, a connecting corridor system includes: The rapid assembly structure of the ultra-large span combined steel structure corridor under low temperature environment, and the temporary reinforcement structure adopts the structure in Example 1; The steel structure corridor 1 is erected between the two cylindrical structures 2 on both sides. The steel structure corridor 1 is formed by splicing together long steel beams 6 and short steel beams 7 in a grid. The steel truss floor deck 19, which is laid on the steel structure corridor 1, is supported at its ends by the flanges of the longitudinal steel beam 6 and the short steel beam 7.

[0028] A composite floor slab is formed by placing tying steel bars 20 on top of the steel truss floor slab 19 and pouring concrete 21 mixed with early-strength antifreeze agent.

[0029] It also includes a triangular support frame 18 installed on the steel structure corridor 1. The triangular support frame 18 is composed of horizontal angle steel and diagonal angle steel bolted together, and is fixed to the stiffening rib connecting plate 23 on the steel structure corridor 1 by bolts 24.

[0030] After the temporary reinforcement measures were in place: High-altitude assembled steel structure connecting corridor 1: First install the long-direction steel beams 6, then install the short-direction steel beams 7, with spacing meeting the unsupported span of the steel truss floor deck 19; triangular supports 18 are set on the cantilevered eaves on both sides of the connecting corridor; the triangular support frames 18 are connected to the stiffening rib connecting plates 23 by bolts. Figure 6 The stiffening rib connecting plate 23 is welded to the longitudinal steel beam 6 and the short steel beam 7; the steel truss floor deck 19 is laid, the steel bars 20 are tied, and the concrete 21 is poured.

[0031] The steel-concrete composite shear walls 4, steel-concrete columns 3, and steel beams 5 on both sides of the steel structure corridor 1 are spliced ​​into a tube-shaped structure 2. When the steel columns 3 are in place, the lower part of the Z-shaped struts is hooked onto the column base plate, the top of the vertical jacks is supported by the Z-shaped struts, and the steel columns are straightened by manual jacks. When the steel columns 3 are installed, guy ropes are tied to the existing structure to form a stable unit. After the steel columns 3 are installed, corrected, and in place, the steel plate walls 4 between the steel columns are installed to make them a whole.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rapid assembly structure for a super-large span composite steel structure corridor under low-temperature conditions, characterized in that, include: (2) A cylindrical structure set on the existing structure on both sides; A rectangular or circular tube support (8) is provided on the top of the cylindrical structure (2); A clamping steel plate (9) is fixed to the existing structural frame beam, and an ear plate (10) is welded on the clamping steel plate (9) and locked to the existing structural frame beam by tie bolts (11); Temporary steel frame (17) for installing clamp steel plate (9); A steel wire rope (22) is used to connect the top of the tube-shaped structure (2) to the temporary steel frame (17), and the end of the steel wire rope (22) is fixed to the pre-embedded ring (12) of the existing structure.

2. The rapid assembly structure for ultra-large span composite steel structure corridors under low-temperature environments as described in claim 1, characterized in that: The tube-shaped structure (2) is assembled from steel-concrete composite columns (3), steel-concrete composite shear walls (4), and steel sections (5); The steel-concrete composite column (3) stands vertically on the foundation. The steel plate concrete composite shear wall (4) is connected to the steel-concrete composite column (3). Multiple steel beams (5) are connected to the steel-concrete composite column (3) and the steel plate concrete composite shear wall (4) on both sides in the horizontal direction to form a closed lateral force resisting tube.

3. The rapid assembly structure for ultra-large span composite steel structure corridors under low-temperature environments as described in claim 2, characterized in that: The steel plate of the steel plate concrete composite shear wall (4) has through holes on both sides of the steel plate, and the reinforcing bars (20) pass through the through holes to achieve double-sided connection; the stirrups of the steel-concrete column (3) pass through the through holes and are welded to the column surface for fixation.

4. The rapid assembly structure for ultra-large span composite steel structure corridors under low-temperature environments as described in claim 1, characterized in that: The clamping steel plate (9) is provided with multiple through bolt holes for connecting tie bolts (11).

5. The rapid assembly structure for ultra-large span composite steel structure corridors under low-temperature environments as described in claim 1, characterized in that: The temporary steel frame (17) includes at least two vertical steel pipe columns (14), and adjacent steel pipe columns (14) are connected by a horizontal square tube (16). The two ends of the diagonal support (15) are bolted to the top of the steel pipe column (14) and the middle of the horizontal square tube (16) to form a spatially stable truss.

6. The rapid assembly structure for ultra-large span composite steel structure corridors under low-temperature environments as described in claim 5, characterized in that: The bottom of the steel pipe column (14) of the temporary steel frame (17) is welded with a base plate, which is fixed to the embedded plate (13) or the top surface of the frame beam by chemical anchors.

7. A connecting corridor system, characterized in that, include: The rapid assembly structure for ultra-large span composite steel structure corridors under low temperature conditions as described in any one of claims 1-6; The steel structure corridor (1) is erected between the two cylindrical structures (2). The steel structure corridor (1) is formed by splicing long steel beams (6) and short steel beams (7) in a grid. The steel truss floor deck (19) is laid on the steel structure corridor (1), and its ends are supported by the flange of the steel beam.

8. The connecting corridor system according to claim 7, characterized in that: The steel truss floor slab (19) is topped with tying steel bars (20) and concrete (21) mixed with early-strength antifreeze agent is poured to form a composite floor slab.

9. The connecting corridor system according to claim 8, characterized in that: It also includes a triangular support frame (18) installed on the steel structure corridor (1), which is composed of horizontal angle steel and diagonal angle steel bolted together and fixed to the stiffening rib connecting plate (23) on the steel structure corridor (1) by bolts (24).

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