Prefabricated floor

Abstract

The utility model discloses an assembly type floor slab belongs to building construction technical field, and the assembly type floor slab includes combined board no.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a prefabricated floor slab. Background Technology

[0002] Prefabricated buildings, as the main form of modern building industrialization, are widely used due to their advantages such as fast construction speed, standardized production, and small environmental impact. Prefabricated floor slabs are key load-bearing components that constitute the prefabricated structural system. They are prefabricated in the factory and then transported to the construction site for hoisting and splicing, which greatly improves the efficiency of building construction.

[0003] In the existing prefabricated floor slab construction process, independent prefabricated floor slabs are usually hoisted onto beams or walls, and the slabs are connected to each other through reserved joints. The quality of this connection directly determines the integrity and safety of the entire floor slab system. Traditional connection methods are often relatively simple in structure and rely on the filling of post-poured concrete or mortar to achieve integration.

[0004] When a floor slab is subjected to load, especially at the joints at the ends of the slabs, significant stress concentration occurs. Existing connection structures have limited ability to disperse this concentrated stress, making the joints at the ends the weakest link in the entire floor system.

[0005] Under continuous load, these weak joint areas are prone to developing micro-cracks or even bending deformation due to excessive local stress. This not only damages the flatness of the floor slab, but more seriously, it weakens the overall load-bearing capacity of the floor slab, posing a potential threat to the safety and durability of the building structure.

[0006] Therefore, this utility model proposes a prefabricated floor slab to address the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of low reliability of the end node connection and easy deformation under load in the existing prefabricated floor slabs, which affect the overall safety and durability of the structure, this utility model aims to provide a prefabricated floor slab with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a prefabricated floor slab, including: a first composite slab, a second composite slab that is connected to the end of the first composite slab, and a slab end control mechanism disposed at the connection point between the first composite slab and the second composite slab.

[0009] Among them, the plate end control mechanism is an integrated connection and reinforcement system. Its internal structure includes a positioning steel bar pre-embedded and fixed at one end of the composite plate, and a connecting groove opened at the two ends of the composite plate. The outline of the connecting groove slides with the positioning steel bar.

[0010] Furthermore, the core of the plate end control mechanism is a portal-shaped connecting block pre-embedded and fixed at the joint of composite plate one and composite plate two. A three-dimensional steel reinforcement system is set around the portal-shaped connecting block. The system includes a fixed steel bar one that runs through and is fixed on the upper and lower sides of the portal-shaped connecting block; a U-shaped bar one that is fixed with a hoop at the protrusion of the portal-shaped connecting block; and a U-shaped bar two that is inclined outside the U-shaped bar one. Through this multi-dimensional structural combination, the connection stress between the plates is effectively dispersed, forming a stable and high-strength plate end node.

[0011] Preferably, in order to achieve reliable anchoring of U-shaped ribs one and U-shaped ribs two, the plate end control mechanism also includes locking steel block one and locking steel block two pre-embedded and fixed inside the composite plate one. One end of U-shaped rib one is fixedly connected to locking steel block two, while one end of U-shaped rib two is fixedly connected to locking steel block one. The structure provides a solid load-bearing foundation for the reinforcement system.

[0012] Preferably, in order to effectively contain cement and other slurry during the pouring construction of the gap after the two plates are joined, a limiting plate is fixedly connected to the four sides of the composite plate. The limiting plate ensures that the filling material can fully fill the joint and ensures the integrity of the connection.

[0013] Preferably, a prefabricated floor slab further includes a crossbeam for supporting the composite slab and a seismic isolation mechanism disposed between the composite slab and the crossbeam. The introduction of the seismic isolation mechanism aims to fundamentally improve the seismic isolation performance of the floor slab and enhance living comfort.

[0014] Preferably, as a specific implementation of the seismic isolation mechanism, a support block is fixedly connected to the top of the crossbeam, and a preset gap is formed between the bottom of the composite plate and the top of the crossbeam through the support block. The gap is filled with polyurethane foam, forming a highly efficient flexible seismic isolation buffer layer.

[0015] Preferably, in order to provide lateral restraint and protection for the polyurethane foam, the seismic isolation mechanism also includes two limiting plates symmetrically fixed on both sides of the crossbeam. The limiting plates are fixedly connected to the crossbeam by screws, ensuring the stability and durability of the seismic isolation layer.

[0016] Preferably, in order to improve the vibration reduction capacity from the structural level of the floor slab itself, a vibration isolation plate is incorporated inside the composite slab, and the energy dissipation and vibration reduction effect of the overall structure is further enhanced through the composite materials.

[0017] Preferably, in order to bear the main load of the floor slab, main supporting steel bars are pre-embedded inside both composite slab one and composite slab two. The main supporting steel bars form the load-bearing skeleton of the floor slab, ensuring the structural safety and load-bearing capacity.

[0018] This utility model has the following beneficial effects: 1. This utility model, by setting up a plate end control mechanism, utilizing the guiding cooperation between the positioning steel bars and the connecting groove, and the three-dimensional steel reinforcement system composed of the portal-shaped connecting block and the first fixed steel bar, the first U-shaped steel bar, and the second U-shaped steel bar, solves the problems of misalignment, low installation accuracy, deformation of plate end nodes due to concentrated stress, and poor connection reliability in existing prefabricated floor slabs during butt joint installation. It achieves the technical effects of simplifying installation difficulty, improving butt joint accuracy, significantly enhancing the load-bearing capacity and deformation resistance of nodes, and making the floor slab connection more solid and reliable.

[0019] 2. This utility model, by setting up a seismic isolation mechanism, utilizes polyurethane foam filled between the composite slab and the beam to form a flexible seismic isolation layer, and combines it with a composite seismic isolation plate inside the composite slab. This solves the problem that existing prefabricated floor slabs have poor vibration reduction effect due to rigid structural connections, which affects the comfort and safety of living. It achieves the technical effect of dual internal and external vibration reduction, effective absorption and isolation of vibration energy, and significant improvement of the seismic isolation performance of the floor slab, thereby improving the overall safety and living comfort of the building. Attached Figure Description

[0020] Figure 1 This is a perspective view of a prefabricated floor slab proposed in this utility model; Figure 2 This is a disassembled view of the connecting groove mechanism of a prefabricated floor slab proposed in this utility model. Figure 3 This is a structural exploded view of the panel end control mechanism for a prefabricated floor slab proposed in this utility model; Figure 4 This is an exploded view of a seismic isolation mechanism for a prefabricated floor slab proposed in this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Composite plate one; 2. Plate end control mechanism; 201. Positioning reinforcement; 202. Limiting plate one; 203. Gate-shaped connecting block; 204. Fixing reinforcement one; 205. Locking steel block one; 206. U-shaped reinforcement one; 207. U-shaped reinforcement two; 208. Locking steel block two; 209. Connecting groove; 3. Vibration isolation mechanism; 301. Support block one; 302. Limiting plate two; 303. Screw; 304. Polyurethane foam; 305. Vibration isolation plate; 4. Main support reinforcement; 5. Crossbeam; 6. Composite plate two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a prefabricated floor slab, which aims to solve the problems of insufficient reliability of the end node connection and easy deformation of the prefabricated floor slab in the prior art, as well as the poor vibration reduction and isolation effect of the floor slab as a whole.

[0024] like Figure 1 As shown, a prefabricated floor slab includes a first composite slab 1 and a second composite slab 6 that abuts to the end of the first composite slab 1. An end control mechanism 2 is provided at the joint between the first composite slab 1 and the second composite slab 6. The end control mechanism 2 is used to firmly connect the first composite slab 1 and the second composite slab 6 into a single unit. Figure 2 and Figure 3 As shown, the specific structure of the plate end control mechanism 2 includes a positioning steel bar 201 pre-embedded and fixed at the end of the combined plate 1, and a connecting groove 209 for mating at the end of the combined plate 2 6. During installation and docking, a sliding fit is formed between the connecting groove 209 and the positioning steel bar 201, providing precise linear guidance for the installation of the combined plate 2 6. The plate end control mechanism 2 also includes a portal-shaped connecting block 203, which is pre-embedded and fixed at the docking point of the combined plate 1 and the combined plate 2 6, serving as the main stress transmission and dispersion component. To enhance the portal-shaped connecting block 203... To enhance the structural strength and connection stability of the 03, a three-dimensional steel reinforcement system is also provided. This system includes a fixed steel bar 204 that runs through and is fixed on both the upper and lower sides of the portal-shaped connecting block 203, and a U-shaped bar 206 that is fixed to the protrusion of the portal-shaped connecting block 203 with a hoop. Furthermore, a U-shaped bar 207 is inclinedly arranged on the outside of the U-shaped bar 206. The U-shaped bar 206 and the U-shaped bar 207 together form a three-dimensional support, which distributes the force borne by the portal-shaped connecting block 203 from multiple dimensions, thereby effectively preventing the node from bending and deforming due to local overload.

[0025] Please refer to Figure 3 and Figure 4To ensure that U-shaped ribs 206 and 207 can stably transmit tensile force, the plate end control mechanism 2 also includes locking steel blocks 205 and 208 pre-embedded and fixed inside the composite plate 1. One end of U-shaped rib 207 is fixedly connected to locking steel block 205 by welding, while one end of U-shaped rib 206 is fixedly connected to locking steel block 208. This anchoring structure provides a stable fixing foundation for U-shaped ribs 206 and 207, thereby ensuring the stress effectiveness of the entire three-dimensional steel reinforcement system. like Figure 1 and Figure 4 As shown, the prefabricated floor slab also includes a crossbeam 5 for supporting the first composite slab 1 and the second composite slab 6. A seismic isolation mechanism 3 is provided between the first composite slab 1 and the crossbeam 5. The seismic isolation mechanism 3 includes a support block 301 fixedly connected to the top of the crossbeam 5. The height of the support block 301 allows a preset gap to be naturally formed between the bottom of the first composite slab 1 and the top of the crossbeam 5. The preset gap is filled with polyurethane foam 304 as a flexible seismic isolation layer. Through the combination of the rigid support block 301 and the flexible polyurethane foam 304, a shock-absorbing buffer layer is formed between the first composite slab 1 and the crossbeam 5. The structure can effectively absorb and attenuate the vibration energy transmitted from the crossbeam 5 to the floor slab, significantly improving the seismic isolation performance of the floor slab.

[0026] In one preferred embodiment, to effectively contain and prevent grout overflow when filling the gap between composite slab 1 and composite slab 2 after they are joined, limiting plates 202 are fixedly connected to the four side walls of composite slab 1. In another preferred embodiment, to effectively limit the lateral movement of the polyurethane foam 304 filled between composite slab 1 and beam 5 and to ensure its compact filling, limiting plates 302 are symmetrically provided on both sides of beam 5, and each limiting plate 302 is fixedly connected to beam 5 by several screws 303. In yet another preferred embodiment, to further enhance the vibration damping and energy dissipation capacity of the floor slab and improve the performance of the composite material layer, one or more layers of vibration isolation plates 305 are composited inside composite slab 1 during its manufacturing process. In yet another preferred embodiment, to bear the main load of the floor slab structure and ensure its overall load-bearing capacity, main supporting steel bars 4 are pre-embedded inside both composite slab 1 and composite slab 2, arranged along their main stress direction.

[0027] Working Principle: During installation, first place composite plate 1 on the support of the crossbeam 5, ensuring that the bottom of the plate is in contact with the crossbeam 5. Then, hoist composite plate 26, aligning one end of its connecting groove 209 with the positioning steel bar 201 of the cross section of composite plate 1. Pre-embedded along the central axis of the portal-shaped connecting block 203, with a length longer than the portal-shaped connecting block 203, it provides linear guidance for composite plate 26, preventing lateral displacement during connection and temporarily bearing part of the self-weight of composite plate 26, preventing vertical misalignment caused by plate end sinking during connection, and preventing changes in the position of composite plate 1 and composite plate 26 during pouring. Then, fix the cement by pouring it into the gap between composite plate 1 and composite plate 26. Under the constraint of the limiting plate 202 fixed around composite plate 1 to prevent cement overflow, the poured cement fully fills the gap between composite plate 1 and composite plate 26, simultaneously connecting composite plate 1 and composite plate 26. The load-bearing capacity is achieved by combining cement and main support steel bars 4, which facilitates the distribution of force. The upper and lower sides of the portal-shaped connecting block 203 are fixed by steel bars 204, which improves the force transmission strength of the portal-shaped connecting block 203. U-shaped ribs 206 are fixed through the protrusion of the portal-shaped connecting block 203. One end of the U-shaped ribs 206 is fixed by locking steel block 208, which acts as a clamp to fix the portal-shaped connecting block 203. In addition, on the outside of the U-shaped ribs 206, U-shaped ribs 207 are set at an angle and fixed to the locking steel block 205 to provide force support for the Y-axis. The U-shaped ribs 206 and U-shaped ribs 207 share the force of the portal-shaped connecting block 203 in a three-dimensional manner, which prevents the portal-shaped connecting block 203 from bending and deforming due to local overload. The plate end control mechanism 2 solves the problem of easy deformation of the plate end nodes caused by the excessive end bearing force of the existing assembly plate. Furthermore, the first composite panel 1 is fixedly installed to the crossbeam 5. With the support of the top support block 301 of the crossbeam 5, a gap sufficient for the polyurethane foam 304 to be generated is reserved between the composite panel 1 and the crossbeam 5. Then, the limiting plate 302 is fixed to both sides of the crossbeam 5 with screws 303. Then, polyurethane foam 304 is filled between the composite panel 1 and the crossbeam 5 to achieve the purpose of isolating a certain vibration. In addition, when manufacturing the composite panel 1, a suitable size vibration isolation plate 305 is added according to the size of the composite panel 1 to achieve material composite, improve performance and reduce vibration. The vibration isolation mechanism 3 solves the problem that the existing device has poor vibration reduction effect of the composite floor slab due to structural reasons, resulting in discomfort and insecurity for residents.

Claims

1. A prefabricated floor slab, comprising a first composite slab (1) and a second composite slab (6) for mating with the end of the first composite slab (1), characterized in that, The prefabricated floor slab also includes a slab end control mechanism (2) disposed at the joint between the first slab (1) and the second slab (6); The plate end control mechanism (2) includes: a positioning steel bar (201) pre-embedded and fixed at the end of the first (1) of the combined plate, a connecting groove (209) opened at the end of the second (6) of the combined plate and slidingly engaged with the positioning steel bar (201), and a gate-shaped connecting block (203) pre-embedded and fixed at the joint between the first (1) of the combined plate and the second (6). The plate end control mechanism (2) also includes a fixed steel bar (204) that runs through and is fixed on the upper and lower sides of the portal connecting block (203), a U-shaped steel bar (206) that is fixed to the protrusion of the portal connecting block (203) with a hoop, and a U-shaped steel bar (207) that is inclinedly arranged on the outside of the U-shaped steel bar (206).

2. The prefabricated floor slab according to claim 1, characterized in that, The plate end control mechanism (2) also includes a locking steel block one (205) and a locking steel block two (208) pre-embedded and fixed in the combined plate one (1). One end of the first U-shaped rib (206) is fixedly connected to the second locking steel block (208), and one end of the second U-shaped rib (207) is fixedly connected to the first locking steel block (205).

3. A prefabricated floor slab according to claim 1, characterized in that, Limiting plate 1 (202) is fixedly connected to the four sides of the combined plate 1 (1). The limiting plate 1 (202) is used to enclose the cement filling the gap between the combined plate 1 (1) and the combined plate 2 (6).

4. A prefabricated floor slab according to claim 1, characterized in that, The prefabricated floor slab also includes a crossbeam (5) for supporting the first composite slab (1), and a seismic isolation mechanism (3) disposed between the first composite slab (1) and the crossbeam (5).

5. A prefabricated floor slab according to claim 4, characterized in that, The vibration isolation mechanism (3) includes: a support block (301) fixedly connected to the top of the crossbeam (5), a preset gap being formed between the bottom of the combined plate (1) and the top of the crossbeam (5) through the support block (301), and polyurethane foam (304) filled in the preset gap.

6. A prefabricated floor slab according to claim 5, characterized in that, The vibration isolation mechanism (3) also includes a second limiting plate (302) symmetrically fixed on both sides of the crossbeam (5). The second limiting plate (302) is fixedly connected to the crossbeam (5) by screws (303). The second limiting plate (302) is used to enclose the polyurethane foam (304).

7. A prefabricated floor slab according to claim 4, characterized in that, The composite plate (1) is internally reinforced with a vibration isolation plate (305).

8. A prefabricated floor slab according to claim 1, characterized in that, Both the first composite plate (1) and the second composite plate (6) have pre-embedded main support steel bars (4).

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