Hollow core slab reinforcement structure

Abstract

This utility model provides a hollow core slab reinforcement structure, comprising: a steel beam laid along the front-to-back direction at the lower middle of the hollow core slab; two embedded parts, each U-shaped, partially surrounding the two rectangular beams from bottom to top; at least two rows of tie bolts arranged at intervals along the vertical direction, each tie bolt penetrating both the embedded part and the rectangular beam along the front-to-back direction; and a web plate disposed on the side of the embedded parts and detachably connected to the steel beam. This application, through the reinforcement structure formed by the steel beam, embedded parts, tie bolts, and web plate, can solve the floor slab reinforcement problems caused by increased floor loads in most cases, and also avoids the problem of punching damage to the lower bolt holes caused by uneven stress on the upper and lower tie bolts.

Description

Technical Field

[0001] This utility model relates to a structure for the renovation of existing buildings, and in particular to a hollow floor slab reinforcement structure. Background Technology

[0002] Existing buildings are numerous, widespread, and complex. With the continuous updating and iteration of standards and regulations, existing buildings constructed at different times have different characteristics in terms of structural performance and reliability indicators. The structural renovation and reinforcement of existing buildings is a complex project involving many technical and management issues. With the acceleration of urban renewal, the design of reinforcement and renovation of existing buildings will become an important part of engineering design at present and in the future.

[0003] Early buildings mostly used hollow core slabs, which are also the part of the building that currently requires the most reinforcement and retrofitting. Due to their unique unidirectional load-bearing properties, hollow core slabs have become a difficult problem in reinforcement design. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a hollow core slab reinforcement structure. The calculated span of the slab is half of the original span. The cooperation between embedded parts and tie bolts transfers the stress of the hollow core slab to the embedded parts, ensuring even stress distribution on the upper and lower tie bolts. This significantly improves the load-bearing capacity of the slab and solves the problem of slab reinforcement caused by increased floor loads in most current applications. The technical solution adopted by this utility model is as follows: A hollow core slab reinforcement structure includes: Four frame columns are arranged at the four corners of a rectangle; Two flower basket beams are respectively connected between the two corresponding frame columns at the front and back; Two rectangular beams are respectively connected between the two corresponding frame columns on the left and right sides; Several hollow floor slabs are laid sequentially between two rectangular beams in a front-to-back direction, with each end of a hollow floor slab supported on a basket beam. Steel beams are laid along the front-to-back direction at the lower middle of the hollow floor slab; Two embedded parts, in a U-shape, partially enclose the two rectangular beams from bottom to top; At least two rows of tie bolts are arranged at intervals in the vertical direction, and any one of the tie bolts passes through the embedded part and the rectangular beam in the front-back direction, respectively. The web is located on the side of the embedded part and is detachably connected to the steel beam.

[0005] Furthermore, the steel beam is an I-beam structure.

[0006] Furthermore, each row of tie bolts corresponds to at least two bolts, arranged at intervals along the left-right direction.

[0007] The advantages of this utility model are as follows: The rectangular beam is partially surrounded by embedded parts, and the rectangular beam and embedded parts are connected into an integral structure by drilling, grouting and filling holes with at least two rows of tie bolts. The steel beam is then connected by a web plate, so that the force of the hollow floor slab is transferred to the integral structure through the web plate. Thus, the force on each tie bolt is uniform. This can solve the problem of floor slab reinforcement caused by the increase of floor load in most cases, and also avoid the problem of punching damage to the lower bolt holes caused by uneven force on the upper and lower tie bolts. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structural composition of this utility model.

[0009] Figure 2 for Figure 1 CC view.

[0010] Figure 3 for Figure 2 A magnified view of the local structure.

[0011] In the diagram: 10-frame column, 20-bracket beam, 30-rectangular beam, 40-hollow floor slab, 50-steel beam, 60-embedded part, 70-tie bolt, 80-web plate. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0013] Please see the appendix Figure 1 - Appendix Figure 3 This application proposes a hollow core slab reinforcement structure, comprising: four frame columns 10, distributed at the four corners of a rectangle; two turnbuckle beams 20, respectively connected between two corresponding front and rear frame columns 10; two rectangular beams 30, respectively connected between two corresponding left and right frame columns 10; a plurality of hollow core slabs 40, sequentially laid between the two rectangular beams 30 in a front-back direction, with both ends of any hollow core slab 40 mounted on the turnbuckle beam 20; a steel beam 50, laid in the middle of the lower side of the hollow core slab 40 in a front-back direction; two embedded parts 60, U-shaped, respectively partially surrounding the two rectangular beams 30 from bottom to top; at least two rows of tie bolts 70, spaced apart in a vertical direction, with any tie bolt 70 penetrating the embedded part 60 and the rectangular beam 30 in a front-back direction; and a web plate 80, disposed on the side of the embedded part 60 and detachably connected to the steel beam 50.

[0014] This application pre-machines a through hole on the side of the embedded part 60 for the tie bolt 70 to pass through.

[0015] Specifically, the existing hollow floor slab structure consists of a basket beam 20 installed between two corresponding front and rear frame columns 10 along the front-rear direction, and a rectangular beam 30 installed between two corresponding left and right frame columns 10 along the left-right direction. The two basket beams 20 and the two rectangular beams 30 form a rectangular shape, and finally, several hollow floor slabs 40 are laid between the two front and rear rectangular beams 30.

[0016] When reinforcing the hollow floor slab structure, first mark the corresponding points on the rectangular beam 30 with the perforations on the U-shaped embedded part 60, and drill holes at the corresponding points. Then, install the embedded part 60 on the rectangular beam 30 from bottom to top. Next, pass at least two rows of tie bolts 70 through the perforations on the embedded part 60 and the drilled holes on the rectangular beam 30 in sequence. Then, fill the drilled holes. Next, attach the side of the web plate 80 to the side of the steel beam 50 and weld the web plate 80 and the embedded part 60 vertically to fix it. Erect the steel beam 50 on the bottom surface of the hollow floor slab 40, and then use high-strength bolts to fix the web plate 80 and the steel beam 50 to complete the reinforcement. By arranging this reinforcement structure, the force on the hollow floor slab 40 is transferred through the web 80 to the overall structure formed by the rectangular beam 30, embedded part 60, and tie bolts 70. Each tie bolt 70 is subjected to the same force, which can not only solve the floor slab reinforcement problem caused by the increase of floor load in most cases, but also avoid the problem of punching damage to the lower bolt holes caused by uneven force on the upper and lower tie bolts.

[0017] In one specific embodiment, the embedded part 60 is composed of three planar steel plates welded end to end and fixed together. By assembling the embedded part 60 on the construction site, the space occupied by the shape of the embedded part 60 during transportation can be reduced.

[0018] In one specific embodiment, in order to ensure the structural strength and support stability of the steel beam 50, the steel beam 50 is an I-beam structure.

[0019] In one specific embodiment, in order to ensure the connection strength between the embedded part 60 and the rectangular beam 30, the number of tie bolts 70 in each row is at least two, and they are arranged at intervals along the left and right directions.

[0020] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hollow floor reinforcing structure, characterized by, include: Four frame columns (10) are distributed at the four corners of the rectangle; Two basket beams (20) are respectively connected between the two corresponding frame columns (10) at the front and back; Two rectangular beams (30) are respectively connected between the two corresponding frame columns (10) on the left and right sides; Several hollow floor slabs (40) are laid sequentially between two rectangular beams (30) in the front-back direction, with both ends of any hollow floor slab (40) respectively mounted on the basket beam (20); A steel beam (50) is laid along the front-to-back direction at the middle of the lower side of the hollow floor slab (40); Two embedded parts (60) are U-shaped and partially surround the two rectangular beams (30) from bottom to top. At least two rows of tie bolts (70) are arranged at intervals in the vertical direction, and any one of the tie bolts (70) passes through the embedded part (60) and the rectangular beam (30) in the front-back direction respectively. The web (80) is disposed on the side of the embedded part (60) and is detachably connected to the steel beam (50).

2. The hollow floor reinforcing structure according to claim 1, characterized by: The steel beam (50) is an I-beam structure.

3. The hollow floor reinforcing structure according to claim 1, wherein: The number of tie bolts (70) in each row is at least two, and they are arranged at intervals in the left-right direction.

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