Novel environment-friendly prefabricated concrete assembly type floor slab structure
By setting splicing strips and connecting strips on both sides of the concrete layer, the problem of large splicing gaps of precast concrete prefabricated floor slabs is solved, the tight connection and construction convenience of the floor slabs are achieved, and the structural strength and laying effect are improved.
Patent Information
- Application Number
- CN202421672657.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-07-16
AI Technical Summary
When splicing existing precast concrete prefabricated floor slabs, the channel steel components extend out of the outside of the concrete layer, resulting in a large splicing gap, affecting the later laying of ceramic tiles and waterproof layers.
Splicing strips and connecting strips are provided on both sides of the concrete layer, and connecting grooves are provided on the splicing strips. The tight splicing of the floor slabs is achieved through the matching insertion of the connecting strips and splicing grooves, and fixed by bolts to reduce gaps.
Effectively reduce the gaps in the floor slabs, facilitate the laying of ceramic tiles and waterproof layers in the later stage, and improve the connection firmness and overall strength of the floor slab structure.
Smart Images
Figure CN223281522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of floor slab structures, in particular to a novel environmentally friendly prefabricated concrete assembled floor slab structure. Background Art
[0002] Prefabricated floor structures are a modern construction technology that prefabricates floor components in a factory and then transports them to the construction site for assembly to form a complete floor system. Compared to traditional on-site cast-in-place concrete floors, this construction method offers numerous advantages, particularly in improving construction efficiency, ensuring project quality, reducing on-site wet work, and minimizing environmental pollution. Prefabricated concrete floor structures are a very common form, including solid slabs, hollow slabs, and composite slabs. These are cast in the factory according to design requirements, and some even have pre-buried pipelines and lifting points. On-site, they only require hoisting into place and making the necessary connections and fixings, significantly shortening the construction cycle.
[0003] For example, patent publication number CN218643645U discloses a fully assembled reinforced concrete floor slab with a steel-concrete composite structure. The slab comprises prefabricated units, the main body of which is a prefabricated reinforced concrete floor slab, including a double-layer bidirectional steel mesh and its poured concrete. The double-layer bidirectional steel mesh comprises multiple primary and secondary steel bar groups, arranged parallel to each other along the secondary direction of the prefabricated unit, and vertically connected by tie bars. Primary and secondary channel steel assemblies are disposed within the prefabricated units, with portions of the primary and secondary channel steel assemblies embedded in the concrete and connected to the primary and secondary steel bar groups, while the remainder extends out of the concrete and connects to the load-bearing beams. The fully assembled reinforced concrete floor slab is convenient, efficient, green, and environmentally friendly to construct. Its efficient and compact fabrication and connection arrangements achieve "multiple functions" and "maximum utilization," achieving structural performance comparable to that of a fully cast-in-place reinforced concrete floor slab, and boasting a high overall cost-effectiveness.
[0004] However, the concrete floor slabs in the above technology still have the following problems:
[0005] Since part of the channel steel assembly extends outward from the concrete layer, during the actual installation of the concrete floor slab, multiple concrete floor slabs need to be spliced together to form the entire roof structure. The protruding channel steel assembly will hinder the splicing of the two concrete floor slabs, resulting in a large gap between the two concrete floor slabs after installation, which will affect the later laying of tiles on the floor slab and the laying of the waterproof layer. Utility Model Content
[0006] In response to the shortcomings of the existing technology, the utility model provides a new environmentally friendly prefabricated concrete assembled floor structure, such as: two concrete floor slabs can be spliced together with as little splicing gap as possible, which is convenient for later laying tiles or waterproofing layers on the concrete floor slabs.
[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a novel environmentally friendly precast concrete assembled floor structure, comprising a floor structure, wherein the floor structure comprises a steel bar layer (1) and a concrete layer (2) cast on the steel bar layer (1), the steel bar layer (1) is pre-embedded in the concrete layer (2), one long side of the concrete layer (2) is connected to a connecting strip (3), and the other long side is connected to a splicing strip (4), and a connecting groove (401) matching the connecting strip (3) is provided on the side of the splicing strip (4) away from the concrete layer (2).
[0008] Furthermore, the steel bar layer includes several short steel bars and several long steel bars, the several short steel bars are arranged in parallel and evenly distributed, the several long steel bars are arranged in parallel and evenly distributed, and the cross positions of the several short steel bars and the several long steel bars are fixed by tying wire.
[0009] Furthermore, the connecting strips and the splicing strips are fixedly connected to both ends of a plurality of short steel bars respectively.
[0010] Furthermore, the steel bar layer is provided with two layers, and the two steel bar layers are arranged in parallel inside the concrete layer.
[0011] Furthermore, a plurality of cavities are provided through the ends of the concrete layer.
[0012] Furthermore, the cavity is arranged parallel to the long steel bar.
[0013] Furthermore, the plurality of cavities are located between two steel bar layers.
[0014] Furthermore, the inner walls of the same end of the two outer cavities are provided with sliding reinforcement rods, and threaded holes are provided at both ends of the outer walls of the reinforcement rods. Two connecting holes are provided at both ends of the concrete layer. The four connecting holes are respectively connected to the two ends of the two outermost cavities, and the threaded holes are fixedly connected to the concrete layer by bolts passing through the corresponding connecting holes.
[0015] Furthermore, a plurality of reinforcement holes are formed through the side wall of the connecting strip, and anti-drop holes matching the plurality of reinforcement holes are formed through the side wall of the splicing strip.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This new environmentally friendly precast concrete assembled floor structure, by arranging splicing strips and connecting strips on both sides of the concrete layer, makes it convenient to insert the connecting strips of two adjacent floor structures into the connecting grooves of the splicing strips when installing multiple floor structures, so that the two floor structures can be spliced together, reducing the gap at the connection, and facilitating the later laying of tiles or waterproofing layers on the laid floor. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall appearance and connection structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the overall appearance and connection structure of the utility model from another angle;
[0020] Figure 3 This is a schematic diagram of the explosion of the concrete layer and steel layer structure of the utility model;
[0021] Figure 4 Based on Figure 2 An enlarged schematic diagram of a part of the connection structure;
[0022] Figure 5 Based on Figure 3 Exploded diagram of the connection structure.
[0023] In the figure: 1. Steel bar layer; 2. Concrete layer; 3. Connecting strip; 4. Splicing strip; 5. Short steel bar; 6. Long steel bar; 7. Reinforcement rod; 201. Cavity; 202. Connecting hole; 301. Reinforcement hole; 401. Connecting groove; 402. Anti-drop hole; 701. Threaded hole. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0025] See also Figure 1 - Figure 5 A new type of environmentally friendly precast concrete assembled floor structure includes a floor structure, wherein the floor structure includes a steel layer 1 and a concrete layer 2 cast on the steel layer 1, the steel layer 1 is pre-buried inside the concrete layer 2, and the long side of one side of the concrete layer 2 is connected to a connecting strip 3, and the long side of the other side is connected to a splicing strip 4, and the splicing strip 4 is provided with a connecting groove 401 matching the connecting strip 3 on the side away from the concrete layer 2.
[0026] like Figure 1 - Figure 5As shown, the novel environmentally friendly precast concrete assembled floor structure in the present invention is similar to the existing novel environmentally friendly precast concrete assembled floor structure, such as the fully assembled reinforced concrete floor connected by a steel-concrete composite structure disclosed in the patent announcement No. CN218643645U. The main improvement of the present invention is to reduce the gap between the floor structures and facilitate the subsequent laying construction on the floor structure. Figures 1 to 5 As shown, when the new environmentally friendly precast concrete assembled floor structure in the present invention is used, two adjacent floor structures are brought close to each other, and the connecting strip 3 on the side of the concrete layer 2 is inserted into the connecting groove 401 of the splicing strip 4 on the other floor structure, so that the two floor structures are spliced together. Repeat the operation to splice multiple floor structures together, thereby reducing the gaps at the joints of multiple floor structures as much as possible, making it convenient to lay tiles or waterproof layers on the floor later, and avoiding the fluid material used for laying from penetrating into the lower building through the gaps.
[0027] like Figure 1 - Figure 5 As shown, the reinforcement layer 1 includes a plurality of short reinforcement bars 5 and a plurality of long reinforcement bars 6. The plurality of short reinforcement bars 5 are arranged in parallel and evenly distributed, and the plurality of long reinforcement bars 6 are arranged in parallel and evenly distributed. The plurality of short reinforcement bars 5 and the plurality of long reinforcement bars 6 are fixed at their intersections by means of tying wires. By tying the short reinforcement bars 5 and the long reinforcement bars 6 together, it is convenient to facilitate the flow of the concrete layer 2 during the pouring of the concrete layer 2 so that the laid short reinforcement bars 5 and the long reinforcement bars 6 are impacted and scattered. At the same time, the reinforcement layer 1 formed by the short reinforcement bars 5 and the long reinforcement bars 6 can more comprehensively reinforce the concrete layer 2, thereby improving the structural strength of the entire floor structure.
[0028] like Figure 1 - Figure 5 As shown, the connecting strips 3 and the splicing strips 4 are respectively fixedly connected to the two ends of a plurality of short steel bars 5. When rolling the steel bar layer 1, the two ends of the plurality of short steel bars 5 can be welded to the sides of the connecting strips 3 and the splicing strips 4, respectively, and the splicing strips 4 and the connecting strips 3 are used to form a frame on both sides. Subsequently, the concrete layer 2 can be poured on the middle steel bar layer 1. This can improve the connection strength between the connecting strips 3, the splicing strips 4 and the concrete layer 2 to a certain extent.
[0029] like Figure 1 - Figure 5 As shown, the steel bar layer 1 is provided with two layers, and the two layers of steel bar layers 1 are arranged parallel to each other inside the concrete layer 2. Providing two layers of steel bar layers 1 can provide support for the upper and lower sides in the concrete layer 2 respectively, further strengthening the structural strength of the entire floor structure.
[0030] like Figure 1 - Figure 5As shown, a plurality of cavities 201 are formed through the end of the concrete layer 2. The plurality of cavities 201 are formed in the concrete layer 2 to reduce the weight of the entire concrete layer 2 and the load on the support beams of the building.
[0031] like Figure 1 - Figure 5 As shown, the cavities 201 are arranged parallel to the long steel bars 6. By arranging the cavities 201 in parallel with the long steel bars 6, dense short steel bars 5 are used to support the cavities 201, thereby increasing the supporting force between the cavities 201 and reducing the probability of the floor structure breaking and damaging.
[0032] like Figure 1 - Figure 5 As shown, the plurality of cavities 201 are located between two layers of steel bars 1. The cavity 201 is arranged between the upper and lower layers of steel bars 1, which reduces the weight of the floor structure while ensuring the structural strength of the floor structure by utilizing the upper and lower layers of steel bars 1.
[0033] like Figure 1 - Figure 5 As shown, the inner walls of the same end of the two outer cavities 201 are both provided with sliding reinforcement rods 7, and both ends of the outer walls of the reinforcement rods 7 are provided with threaded holes 701. Both ends of the concrete layer 2 are provided with two connecting holes 202. The four connecting holes 202 are respectively connected to the two ends of the outermost two cavities 201, and the threaded holes 701 are fixedly connected to the concrete layer 2 by bolts passing through the corresponding connecting holes 202. When installing the floor structure, the end of the floor structure can be connected to another floor structure through two reinforcing rods 7. The reinforcing rod 7 is inserted into the cavity 201 of the floor structure, and a bolt is inserted into the connecting hole 202 and screwed into the threaded hole 701 on the reinforcing rod 7 to fix the reinforcing rod 7 to the cavity 201. Then, the cavity 201 of the other floor structure is put on the other end of the reinforcing rod 7. Then, the bolt is inserted into the connecting hole 202 on the other floor structure again and screwed into the threaded hole 701 at the other end of the inner reinforcing rod 7 to connect and fix the ends of the two floor structures to each other, thereby further improving the connection firmness of the floor structure.
[0034] like Figure 1 - Figure 5 As shown, the side wall of the connecting strip 3 is provided with a plurality of reinforcement holes 301, and the side wall of the splicing strip 4 is provided with anti-drop holes 402 that match the plurality of reinforcement holes 301. After the two adjacent floor structures are spliced together via the connecting strip 3 and the splicing strip 4, bolts can be inserted into the aligned reinforcement holes 301 and anti-drop holes 402 to secure the spliced connecting strip 3 and splicing strip 4 to each other, thereby further improving the firmness of the splicing of the two floor structures.
[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A novel environmentally friendly precast concrete assembled floor structure, including a floor structure, characterized by: The floor structure comprises a steel bar layer (1) and a concrete layer (2) cast on the steel bar layer (1), the steel bar layer (1) being pre-buried inside the concrete layer (2), one long side of the concrete layer (2) being connected to a connecting strip (3), and the other long side of the concrete layer (2) being connected to a splicing strip (4), and a connecting groove (401) matching the connecting strip (3) being provided on a side of the splicing strip (4) away from the concrete layer (2).
2. The novel environmentally friendly precast concrete assembled floor structure according to claim 1 is characterized by: The steel bar layer (1) comprises a plurality of short steel bars (5) and a plurality of long steel bars (6), wherein the plurality of short steel bars (5) are arranged in parallel and evenly distributed, and the plurality of long steel bars (6) are arranged in parallel and evenly distributed, and the plurality of short steel bars (5) and the plurality of long steel bars (6) are fixed at their cross positions by tying wire.
3. The novel environmentally friendly precast concrete assembled floor structure according to claim 2 is characterized by: The connecting strip (3) and the splicing strip (4) are respectively fixedly connected to the two ends of a plurality of short steel bars (5).
4. A novel environmentally friendly precast concrete assembled floor structure according to claim 1, 2 or 3, characterized in that: The steel bar layer (1) is provided with two layers, and the two steel bar layers (1) are arranged in parallel inside the concrete layer (2).
5. The novel environmentally friendly precast concrete assembled floor structure according to claim 4 is characterized by: A plurality of cavities (201) are provided through the ends of the concrete layer (2).
6. The novel environmentally friendly precast concrete assembled floor structure according to claim 5 is characterized by: The cavity (201) is arranged parallel to the long steel bar (6).
7. A novel environmentally friendly precast concrete assembled floor structure according to claim 5 or 6, characterized in that: The plurality of cavities (201) are located between two steel bar layers (1).
8. The novel environmentally friendly precast concrete assembled floor structure according to claim 5 or 6, characterized in that: The inner walls of the same end of the two outer cavities (201) are both provided with sliding reinforcing rods (7), and both ends of the outer walls of the reinforcing rods (7) are provided with threaded holes (701). Both ends of the concrete layer (2) are provided with two connecting holes (202), and the four connecting holes (202) are respectively connected to the two ends of the two outermost cavities (201), and the threaded holes (701) are fixedly connected to the concrete layer (2) by bolts passing through the corresponding connecting holes (202).
9. A novel environmentally friendly precast concrete assembled floor structure according to claim 1, 2, 3, 5 or 6, characterized in that: The side wall of the connecting strip (3) is provided with a plurality of reinforcement holes (301), and the side wall of the splicing strip (4) is provided with anti-drop holes (402) matching the plurality of reinforcement holes (301).