Composite floor slab splicing structure

Abstract

The utility model discloses a composite floor slab splicing structure, which relates to the technical field of composite floor slabs and comprises a first floor slab and a second floor slab, locking end frames are fixed at one ends of the first floor slab and the second floor slab, guide grooves are formed in the other ends of the first floor slab and the second floor slab, and U-shaped channel steel is arranged on the inner sides of the guide grooves. Locking strips are symmetrically fixed to the inner side of each U-shaped steel channel, carrying bottom plates are fixed to the bottom ends of the first floor slab and the second floor slab, supporting bases are fixed to one ends of the carrying bottom plates, and base grooves are formed in the other ends of the carrying bottom plates. According to the composite floor slab splicing structure, the position of the locking end frame is fixed, meanwhile, after the locking end frame slides into the inner side of the U-shaped steel channel, concrete is guided into the locking end frame through the material filling opening, and the concrete can make full contact with the U-shaped steel channel through the open structure of the locking end frame; and the connection strength between the first floor and the second floor is improved.

Description

Technical Field

[0001] This utility model relates to the field of composite floor slab technology, and in particular to a composite floor slab splicing structure. Background Technology

[0002] Composite floor slabs are prefabricated monolithic floor slabs composed of precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs offer good overall integrity, with smooth upper and lower surfaces that facilitate finishing, making them suitable for high-rise buildings and large-span buildings requiring high overall rigidity. These composite floor slabs combine the advantages of cast-in-place slabs, such as high rigidity, good crack resistance, no increase in steel reinforcement consumption, and savings in formwork. Upon arrival at the construction site, composite floor slabs are joined together using surrounding structural members, and finally, a final layer of concrete is poured to form the monolithic structure.

[0003] For example, Chinese utility model patent (CN218233940U) discloses a splicing structure for composite floor slabs, which states: "By setting a protective mechanism, the problems of the lack of insulation layer, poor heat insulation capacity, and poor waterproofing of composite floor slabs are solved. The composite floor slab structure is too simple, resulting in low efficiency and poor stability during installation. The protective mechanism provides heat insulation and waterproofing for floor slab one and floor slab two, thereby improving the utilization rate. The fixing mechanism can fix floor slab one and floor slab two, which facilitates disassembly and improves construction efficiency."

[0004] The aforementioned patents only use nuts, screws and other components in the fixing mechanism to fix the floor slabs together, resulting in low connection strength. The load between the floor slabs is borne only by the nuts and screws, which can easily lead to problems such as cracking at the joints between the floor slabs. Therefore, this application proposes a composite floor slab splicing structure. Utility Model Content

[0005] Based on this, it is necessary to provide a composite floor slab splicing structure to address the aforementioned technical problems. By inserting a positioning shaft, the support base is limited to the inside of the base groove, and screws are tightened into the screw holes to limit the position of the positioning shaft, thereby fixing the position of the locking end frame. At the same time, after the locking end frame slides into the inside of the U-shaped channel steel, concrete is introduced into the locking end frame through the grouting port. The open structure of the locking end frame allows the concrete to fully contact the U-shaped channel steel, thereby improving the connection strength between the first floor slab and the second floor slab.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A composite floor slab splicing structure, which is applied in building construction;

[0008] The system includes a first floor slab and a second floor slab. A locking end frame is fixed to one end of each floor slab. Guide grooves are formed inside the other ends of both floor slabs. U-shaped channel steels are provided inside the guide grooves. Two U-shaped channel steels are fixed to the first floor slab and the second floor slab, respectively. A locking strip is symmetrically fixed inside each U-shaped channel steel. The locking end frame is located inside the U-shaped channel steels and is slidably connected to the U-shaped channel steels and the locking strips. A mounting base is fixed to the bottom end of both the first floor slab and the second floor slab. A support base is fixed to one end of each mounting base. The support base is located below the locking end frame. A base groove is formed inside the other end of the mounting base, and the support base is slidably connected to the base groove.

[0009] As a preferred embodiment of the composite floor slab splicing structure provided by this utility model, each mounting base plate has a screw hole inside the end near the base groove. The screw hole is connected to the base groove, and a positioning shaft is slidably connected to the inner side of the screw hole. The positioning shaft is slidably connected to the supporting base.

[0010] In a preferred embodiment of the composite floor slab splicing structure provided by this utility model, screws are fitted on both sides of each positioning shaft, and the screws are threadedly connected to the screw holes.

[0011] As a preferred embodiment of the composite floor slab splicing structure provided by this utility model, each of the mounting base plates has a support shaft fixed inside the end near the support base.

[0012] As a preferred embodiment of the composite floor slab splicing structure provided by this utility model, each of the support shafts is rotatably connected to a locking washer on the outer side and on both sides of the mounting base plate, and the end of the locking washer away from the support shaft is threadedly connected to a screw.

[0013] As a preferred embodiment of the composite floor slab splicing structure provided by this utility model, each of the locking end frames has a filling port inside its upper end.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The composite floor slab splicing structure provided by this utility model uses the insertion of a positioning shaft to limit the support base to the inside of the base groove, and the positioning shaft is limited by screws tightened into the screw holes, thereby fixing the position of the locking end frame. At the same time, after the locking end frame slides into the inside of the U-shaped channel steel, concrete is introduced into the locking end frame through the grouting port. The open structure of the locking end frame allows the concrete to fully contact the U-shaped channel steel, thereby improving the connection strength between the first floor slab and the second floor slab. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the composite floor slab splicing structure provided by this utility model;

[0018] Figure 2 A bottom view of the overall structure of the composite floor slab splicing structure provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the structure between the locking end frame and the U-shaped channel steel in the composite floor slab splicing structure provided by this utility model.

[0020] Figure 4 A schematic diagram of the structure between two mounting base plates in the composite floor slab splicing structure provided by this utility model.

[0021] The markings in the diagram are explained as follows:

[0022] 1. First floor slab; 2. Second floor slab; 3. Locking end frame; 4. U-shaped channel steel; 5. Locking strip; 6. Filling port; 7. Mounting base plate; 8. Support base; 9. Support shaft; 10. Locking washer; 11. Base groove; 12. Screw hole; 13. Positioning shaft; 14. Screw. Detailed Implementation

[0023] As described in the background art, the above-mentioned patent only uses components such as nuts and screws in the fixing mechanism to fix the floor slabs together, resulting in low connection strength. The load between the floor slabs is borne only by the nuts and screws, which can easily lead to problems such as cracking at the joints between the floor slabs.

[0024] To solve this technical problem, this utility model provides a composite floor slab splicing structure, which is applied to building construction;

[0025] The system includes a first floor slab 1 and a second floor slab 2. A locking end frame 3 is fixed to one end of both the first floor slab 1 and the second floor slab 2. A guide groove is opened inside the other end of both the first floor slab 1 and the second floor slab 2. A U-shaped channel steel 4 is provided inside the guide groove. Two U-shaped channel steels 4 are fixed to the first floor slab 1 and the second floor slab 2 respectively. A locking strip 5 is symmetrically fixed inside each U-shaped channel steel 4. The locking end frame 3 is located inside the U-shaped channel steel 4 and is slidably connected to the U-shaped channel steel 4 and the locking strip 5. A mounting base plate 7 is fixed to the bottom end of both the first floor slab 1 and the second floor slab 2. A support base 8 is fixed to one end of the mounting base plate 7. The support base 8 is located at the lower end of the locking end frame 3. A base groove 11 is opened inside the other end of the mounting base plate 7. The support base 8 is slidably connected to the base groove 11.

[0026] The composite floor slab splicing structure provided by this utility model fixes the position of the locking end frame 3. At the same time, when the locking end frame 3 slides into the inside of the U-shaped channel steel 4, concrete is introduced into the locking end frame 3 through the filling port 6. The open structure of the locking end frame 3 allows the concrete to fully contact the U-shaped channel steel 4, thereby improving the connection strength between the first floor slab 1 and the second floor slab 2.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example 1

[0029] Please refer to Figure 1-4 A composite floor slab splicing structure includes a first floor slab 1 and a second floor slab 2. A locking end frame 3 is fixed at one end of both the first floor slab 1 and the second floor slab 2. A guide groove is opened inside the other end of both the first floor slab 1 and the second floor slab 2. When the locking end frame 3 slides into the guide groove, in order to improve the connection strength and limit the movement of the locking end frame 3 so that the locking end frame 3 can only slide up and down, a U-shaped channel steel 4 is provided on the inner side of the guide groove. Two U-shaped channel steels 4 are fixed to the first floor slab 1 and the second floor slab 2 respectively. A locking strip 5 is symmetrically fixed on the inner side of each U-shaped channel steel 4. The locking end frame 3 is located on the inner side of the U-shaped channel steel 4 and is slidably connected to the U-shaped channel steel 4 and the locking strip 5.

[0030] After the locking end frame 3 is completely slid into the inside of the U-shaped channel steel 4, in order to limit and fix the position of the locking end frame 3 and realize the assembly connection between the first floor slab 1 and the second floor slab 2, the bottom ends of the first floor slab 1 and the second floor slab 2 are fixed with mounting base plates 7. One end of the mounting base plate 7 is fixed with a support base 8. The support base 8 is located at the lower end of the locking end frame 3. The other end of the mounting base plate 7 has a base groove 11. The support base 8 is slidably connected with the base groove 11.

[0031] In order to limit the support base 8 to the inside of the base groove 11, each mounting base plate 7 has a screw hole 12 opened inside the end near the base groove 11. The screw hole 12 is connected to the base groove 11. A positioning shaft 13 is slidably connected inside the screw hole 12. The positioning shaft 13 passes through the base groove 11 and is slidably connected to the support base 8. In order to limit the position of the positioning shaft 13 and make the support base 8 stably fixed inside the base groove 11, screws 14 are attached to both sides of each positioning shaft 13. The screws 14 are threadedly connected to the screw hole 12.

[0032] To facilitate the introduction of concrete into the locking end frame 3, each locking end frame 3 has a filling port 6 inside its upper end. After the concrete is introduced, the open structure of the locking end frame 3 allows the concrete to fully contact the U-shaped channel steel 4, thereby further improving the connection strength between the first floor slab 1 and the second floor slab 2 and achieving the anti-cracking effect. It can also share part of the load to prevent the positioning shaft 13 and screw 14 from bearing the load alone and causing the connection to break. Example 2

[0033] The composite floor slab splicing structure provided in Example 1 is further optimized, specifically, as follows: Figure 1-2 As shown, in order to further improve the contact area and stability when the screw 14 is tightened into the screw hole 12, thereby achieving the anti-loosening effect, each mounting base 7 has a support shaft 9 fixed inside the end near the support base 8. Each support shaft 9 has a locking washer 10 rotatably connected to the outside of the mounting base 7 and on both sides of the mounting base 7. The end of the locking washer 10 away from the support shaft 9 is threadedly connected to the screw 14.

[0034] The usage process of the composite floor slab splicing structure provided by this utility model is as follows: During connection, the locking end frame 3 at one end of the first floor slab 1 is first slid down into the U-shaped channel steel 4 at one end of the second floor slab 2. The locking end frame 3 is limited by the structural design of the locking strip 5, so that the locking end frame 3 can only move up and down. After the locking end frame 3 is completely slid into the U-shaped channel steel 4, the support base 8 slides into the inner side of the base groove 11 and aligns with it. At this time, the positioning shaft 13 is slid into the screw hole 12 and passes through the support base 8, thereby limiting the position of the support base 8, thus realizing the locking end frame. After fixing the positioning shaft 13, and flipping the locking washer 10 around the support shaft 9 to the outside of the screw hole 12, the two screws 14 are threaded to the two locking washers 10 and tightened into the screw hole 12, so that the screws 14 are in close contact with the positioning shaft 13, thereby fixing the position of the positioning shaft 13. After concrete is introduced into the space between the locking end frame 3 and the U-shaped channel steel 4 through the pouring port 6, the connection strength between the first floor slab 1 and the second floor slab 2 is further improved, and the load pressure of the positioning shaft 13 and the screws 14 is distributed, so that the joint between the first floor slab 1 and the second floor slab 2 is not easy to crack.

Claims

1. A composite floor panel assembly, characterized in that The system includes a first floor slab (1) and a second floor slab (2). One end of the first floor slab (1) and the second floor slab (2) is fixed with a locking end frame (3). The other end of the first floor slab (1) and the second floor slab (2) are provided with guide grooves. U-shaped channel steel (4) is provided inside the guide groove. The two U-shaped channel steel (4) are fixed to the first floor slab (1) and the second floor slab (2) respectively. Locking strips (5) are symmetrically fixed inside each U-shaped channel steel (4). The locking end frame (3) is located inside the U-shaped channel steel (4) and is slidably connected to the U-shaped channel steel (4) and the locking strips (5). The bottom end of the first floor slab (1) and the second floor slab (2) are fixed with a mounting base plate (7). One end of the mounting base plate (7) is fixed with a support base (8). The support base (8) is located at the lower end of the locking end frame (3). The other end of the mounting base plate (7) is provided with a base groove (11). The support base (8) is slidably connected to the base groove (11).

2. The composite floor slab assembly of claim 1, wherein, Each mounting base plate (7) has a screw hole (12) inside the end near the base groove (11). The screw hole (12) is connected to the base groove (11). A positioning shaft (13) is slidably connected inside the screw hole (12). The positioning shaft (13) is slidably connected to the support base (8).

3. The composite floor slab assembly of claim 2, wherein, Each of the positioning shafts (13) has a screw (14) attached to both sides, and the screw (14) is threaded into the screw hole (12).

4. The composite floor slab assembly of claim 3, wherein, Each of the mounting base plates (7) has a support shaft (9) fixed inside at one end near the support base (8).

5. The composite floor slab assembly of claim 4, wherein, Each of the support shafts (9) is rotatably connected to a locking washer (10) on the outside and on both sides of the mounting base plate (7), and the end of the locking washer (10) away from the support shaft (9) is threadedly connected to a screw (14).

6. The composite floor slab assembly of claim 1, wherein, Each of the locking end frames (3) has a filling port (6) inside its upper end.

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