Slab structure and slab-beam connection structure of prefabricated buildings

Abstract

This utility model discloses a slab structure and a slab-beam connection structure for prefabricated buildings. The slab structure includes a first slab and a second slab; the transverse reinforcement of the first slab is connected to the connecting reinforcement of the first slab, and the transverse reinforcement of the second slab is connected to the sleeve of the second slab. The connecting reinforcement of the first slab passes through the sleeve of the second slab and is bolted on. The slab-beam connection structure includes a beam structure and the aforementioned slab structure; the beam structure contains transverse beam reinforcement connected to the connecting reinforcement, the ends of which protrude from the concrete of the beam structure; the slab structure also includes a slab sleeve connected to the transverse reinforcement of the first slab and / or the transverse reinforcement of the second slab; the connecting reinforcement of the beam passes through the slab sleeve and is bolted on. The bolting of the connecting reinforcement of the first slab to the sleeve of the second slab creates a stable connection between the reinforcement in the first slab and the reinforcement in the second slab, replacing the existing cast-in-place connection method between slabs, eliminating the need for wet work, effectively improving construction efficiency and reducing construction difficulty.

Description

Technical Field

[0001] This utility model mainly relates to the field of prefabricated building technology, and in particular to the plate structure and plate-beam connection structure of prefabricated buildings. Background Technology

[0002] Prefabricated construction refers to transferring a large amount of on-site work from traditional construction methods to factories. Prefabricated slabs, beams, columns, and walls are manufactured in factories, cured, and inspected before being transported to the construction site for assembly using reliable connection methods. It features industrialized production; factory-prefabricated components enable standardized design and large-scale production, reducing on-site construction waste and noise. It is also less affected by weather conditions, effectively shortening the construction cycle and offering significant advantages in environmental protection and construction efficiency. With the advancement of building industrialization, prefabricated construction is becoming an important development direction in the modern construction field.

[0003] In existing prefabricated concrete buildings, floor slabs are usually formed by splicing multiple slabs together. The slabs are usually connected to each other and to beams by cast-in-place concrete. This on-site wet work is inefficient and difficult to carry out. Utility Model Content

[0004] To address the technical problems of low efficiency and high construction difficulty in on-site wet operations in existing technologies, this utility model provides a slab structure and slab-beam connection structure for prefabricated buildings.

[0005] The following technical solution is adopted: The prefabricated building's slab structure includes Slab 1 and Slab 2. Slab 1 contains several horizontal reinforcing bars that connect to connecting reinforcing bars at their joint ends, with the ends of these connecting reinforcing bars protruding from the concrete of Slab 1. Slab 2 contains several horizontal reinforcing bars that connect to sleeves at their joint ends, with the sleeves embedded in the concrete of Slab 2. In the joint state, the connecting reinforcing bars of Slab 1 pass through the sleeves of Slab 2 and are bolted together with nuts. By setting connecting reinforcing bars connected to the horizontal reinforcing bars of Slab 1 and sleeves connected to the horizontal reinforcing bars of Slab 2, and using nut bolting to connect them into a whole, a stable connection is formed between the reinforcing bars in Slab 1 and Slab 2. This nut bolting method replaces the existing cast-in-place connection method between slabs, eliminating the need for wet work, effectively improving construction efficiency and reducing construction difficulty.

[0006] The joint ends of plate one and plate two are configured in a fitted stepped shape; the lower step of plate one protrudes from its upper step, and the end of the connecting bar of plate one protrudes from the tread surface of the lower step; the upper step of plate two protrudes from its lower step, and the sleeve of plate two is built into the upper step. The stepped joint ends enable precise positioning of plate one and plate two during splicing, reducing adjustment time and improving assembly efficiency. Furthermore, the stepped joint ends form a mechanical interlock in both vertical and horizontal directions, improving shear and misalignment resistance at the plate joints. Simultaneously, the stepped joint ends also provide concealed space for the vertical reinforcing bars and the sleeve, ensuring that the reinforcing bar connection points are completely located inside the step, effectively enhancing the aesthetics of the structure.

[0007] The thickness of the lower step of slab one is equal to that of the lower step of slab two; the thickness of the upper step of slab one is equal to that of the upper step of slab two. This equal thickness design ensures that the upper and lower surfaces of slab one and slab two remain flat after joining, avoiding unevenness on the floor surface caused by inconsistent step thicknesses. This eliminates the need for a secondary leveling layer, allowing for direct decorative construction and further saving materials and labor, meeting the requirements of efficient prefabricated building construction. Simultaneously, the equal thickness design also allows slab one and slab two to use the same specification template during factory prefabrication, reducing the types of templates and lowering mold costs.

[0008] The width of the first step on the first slab is greater than the width of the second step on the second slab. When the first and second slabs are joined, a pre-reserved groove for laying external pipelines is formed between the upper steps of the first and second slabs. The width difference between the first and second steps naturally creates this pre-reserved groove, eliminating the need for on-site excavation or additional processing. This directly integrates the space for pipeline laying, reducing secondary construction work and avoiding structural damage caused by secondary grooving on the floor slab. This aligns with the "less grooving, less wet work" concept of prefabricated buildings and also reduces construction waste and noise. Furthermore, pre-reserving pipeline channels improves the efficiency of water and electricity installation, making the construction process smoother.

[0009] The connecting rib of the plate is configured as a hinged bolt, with its annular retaining ring fitted onto the horizontal rib of the plate. This connecting rib structure is convenient to operate and safe and stable, and can be installed during the factory prefabrication stage. On-site assembly can be achieved quickly by simply tightening the bolts, avoiding the high-temperature operation and quality fluctuation problems caused by traditional welding.

[0010] The slab-beam connection structure of prefabricated buildings includes a beam structure and the aforementioned slab structure. The beam structure has built-in transverse reinforcement bars connected to beam connecting bars, the ends of which protrude from the concrete of the beam structure. The slab structure also includes a slab sleeve connected to one or / and two transverse reinforcement bars. In the joined state, the beam connecting bars pass through the slab sleeve and are bolted together with nuts. This bolted slab-beam connection structure, through the mechanical connection between the beam connecting bars and the slab sleeve, completely replaces the need for welding reinforcement between the floor slab and beam in existing technologies, eliminating the hazards of high-temperature operations and improving on-site safety. The bolting method is standardized and rapid, enabling rapid assembly of the entire building in conjunction with the slab structure, significantly shortening the construction cycle and ensuring the reliability of the connections between structures.

[0011] The beam connecting bars are configured as hinged bolts, with their annular fixing rings fitted onto the first or / and second transverse reinforcement of the slab. This structure is convenient to operate and safe and stable, and can be installed during the factory prefabrication stage. On-site assembly can be achieved quickly by simply tightening the bolts, avoiding the high-temperature operations and quality fluctuations associated with traditional welding. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of plate 1; Figure 2 This is a structural schematic diagram of plate two; Figure 3 This is a schematic diagram of the reinforcement connection between slab 1 and slab 2; Figure 4 This is a structural diagram of a plate-beam connection structure; Figure 5 This is an exploded view of a plate-beam connection structure; Figure 6 This is a perspective diagram of a beam structure.

[0013] The labels in the diagram represent: 1. Slab structure; 11. Slab 1; 111. Horizontal reinforcement of slab 1; 112. Connecting reinforcement of slab 1; 113. Lower step of slab; 1131. Tread surface of slab 1; 114. Upper step of slab 1; 115. Clearance groove; 12. Slab 2; 121. Horizontal reinforcement of slab 2; 122. Slab 2 sleeve; 123. Upper step of slab 2; 124. Lower step of slab 2; 13. Plumbing and electrical reserved groove; 14. Slab sleeve; 2. Beam structure; 21. Beam horizontal reinforcement; 22. Beam connecting reinforcement. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Example 1 like Figures 1 to 6As shown, in this embodiment, the slab structure is a reinforced concrete structure, including slab one 11 and slab two 12. Slab one 11 has a plurality of horizontal reinforcing bars 111 evenly distributed within it, which are connected to connecting reinforcing bars 112 at their joint ends. The ends of the connecting reinforcing bars 112 protrude from the concrete of slab one 11. Slab two 12 has a plurality of horizontal reinforcing bars 121, the number of which is equal to the number of horizontal reinforcing bars 111, and their positions correspond one-to-one with those of the horizontal reinforcing bars 111. The horizontal reinforcing bars 121 are connected to a sleeve 122 at their joint ends, and the sleeve 122 is embedded in the concrete of slab two 12. Slab two 12 has an installation hole at the location of the sleeve 122, which communicates with the sleeve 122 and has a diameter larger than the outer diameter of the sleeve 122. In the joined state, the connecting rib 112 of plate one penetrates through the sleeve 122 of plate two and partially extends into the mounting hole. The end of the connecting rib 112 of plate one is threaded, and the nut is threaded onto the connecting rib 112 of plate one. At this time, the nut is in contact with the top surface of the sleeve 122 of plate two, forming a fixation, and the nut is completely inserted into the mounting hole. Furthermore, a clearance groove 115 is formed on the corner of plate one 11 near the external column structure. In this embodiment, the clearance groove 115 is in the shape of a broken line.

[0016] In this embodiment, the joint ends of plate 11 and plate 2 are configured as matching steps; the lower step 113 of plate 11 protrudes from its upper step 114, and the end of the connecting rib 112 of plate 1 protrudes from the tread surface 1131 of the lower step 113; the upper step 123 of plate 2 12 protrudes from its lower step 124, and the sleeve 122 of plate 2 is built into the upper step 123. Specifically, the lower step 113 and the lower step 124 of plate 2 have the same thickness; the upper step 114 and the upper step 123 of plate 2 have the same thickness. The width of the lower step 113 of the first plate is greater than the width of the upper step 123 of the second plate. When the first plate 11 and the second plate 12 are joined, a water and electricity reserved groove 13 for laying external pipelines is formed between the upper step 114 of the first plate and the upper step 123 of the second plate (in other embodiments, the width of the lower step 113 of the first plate can also be equal to the width of the upper step 123 of the second plate, in which case the water and electricity reserved groove 13 will not be formed). More specifically, the connecting rib 112 of the first plate is set as a hinged bolt, and its annular fixing ring is fitted on the horizontal rib 111 of the first plate.

[0017] In this embodiment, the slab-beam connection structure of the prefabricated building includes a beam structure 2 and the aforementioned slab structure 1. The beam structure 2 has built-in beam transverse reinforcement 21, which is connected to beam connecting reinforcement 22, the ends of which protrude from the concrete of the beam structure 2. The slab structure 1 also includes a slab sleeve 14, which is connected to the first slab transverse reinforcement 111 and / or the second slab transverse reinforcement 121. In the joined state, the beam connecting reinforcement 22 passes through the slab sleeve 14 and is bolted with a nut. Specifically, the beam connecting reinforcement 22 is configured as a hinged bolt, with its annular fixing ring fitted onto the first slab transverse reinforcement 111 and / or the second slab transverse reinforcement 121.

[0018] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A slab structure for prefabricated buildings (1), characterized in that, include: Slab 1 (11) has a number of slab 1 horizontal bars (111) inside, which are connected to slab 1 connecting bars (112) at the joint end of slab 1 (11), and the ends of the slab 1 connecting bars (112) pass through the concrete of slab 1 (11). Slab 2 (12) has several slab 2 horizontal reinforcement bars (121) inside, which are connected to slab 2 sleeve (122) at the joint end of slab 2 (12), and the slab 2 sleeve (122) is built into the concrete of slab 2 (12); When the two are joined, the connecting rib (112) of the first plate passes through the sleeve (122) of the second plate and is bolted together with a nut.

2. The prefabricated building panel structure (1) according to claim 1, characterized in that: The joint ends of the first plate (11) and the second plate (12) are configured in a suitable stepped shape; The lower step (113) of the plate (11) protrudes from its upper step (114), and the end of the connecting rib (112) of the plate protrudes from the tread surface (1131) of the lower step (113). The upper step (123) of the second plate (12) protrudes from its lower step (124), and the sleeve (122) of the second plate is built into the upper step (123).

3. The prefabricated building panel structure (1) according to claim 2, characterized in that: The thickness of the lower step (113) of the first plate is equal to that of the lower step (124) of the second plate; the thickness of the upper step (114) of the first plate is equal to that of the upper step (123) of the second plate.

4. The prefabricated building panel structure (1) according to claim 2 or 3, characterized in that: The width of the step (113) under the first plate is greater than the width of the step (123) on the second plate; when the first plate (11) and the second plate (12) are joined, a water and electricity reserved groove (13) for laying external pipelines is formed between the step (114) on the first plate and the step (123) on the second plate.

5. The prefabricated building panel structure (1) according to claim 1, characterized in that: The connecting rib (112) of the plate is configured as a hinge bolt, and its annular fixing ring is fitted onto the horizontal rib (111) of the plate.

6. A slab-beam connection structure, characterized in that, Includes a beam structure (2) and a plate structure (1) as described in any one of claims 1-5; The beam structure (2) has a built-in beam transverse reinforcement (21), which is connected to the beam connecting reinforcement (22), and the end of the beam connecting reinforcement (22) extends out of the concrete of the beam structure (2); The plate structure (1) also includes a plate sleeve (14), which is connected to the first horizontal reinforcement (111) and / or the second horizontal reinforcement (121); When the two are joined, the beam connecting bar (22) passes through the plate sleeve (14) and is bolted with a nut.

7. The plate-beam connection structure according to claim 6, characterized in that: The beam connecting bar (22) is configured as a hinge bolt, and its annular fixing ring is fitted onto the first horizontal bar (111) or / and the second horizontal bar (121) of the plate.

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