Prefabricated concrete laminated slab splicing seam structure
By incorporating protrusions and grooves in the precast concrete composite slab, combined with limiting blocks and bolt connections, the problem of unstable joint structure in precast concrete composite slabs was solved, resulting in a more stable splicing effect.
Patent Information
- Application Number
- CN202520035192.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The existing precast concrete composite slabs have relatively simple splice joint structures and lack strength, resulting in insufficient tightness in the connection.
The method of inserting protrusions into grooves, combined with limiting blocks and bolt connections, allows the limiting blocks to extend and retract into the limiting grooves under the pressure of the protrusions. This, along with the use of transverse steel bar slots and threaded grooves, enhances the firmness of the splice joint.
This method achieves a firm connection between precast concrete composite slabs, enhances the stability and tightness of the joints, and improves construction quality.
Smart Images
Figure CN223675573U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of precast concrete composite slab, and particularly relates to a precast concrete composite slab splicing joint structure. BACKGROUND
[0002] The concrete composite slab is a fabricated monolithic structure composed of a precast prestressed concrete bottom plate (or a precast plate, which comprises a precast bottom plate and a steel bar truss) and a cast-in-place concrete layer (cast-in-place plate), and has good integrity and seismic resistance. The concrete composite slab saves the formwork in construction, accelerates the construction progress, and thus reduces the engineering cost.
[0003] According to the search, the utility model with the announcement number CN218758244U can seamlessly splice the PC concrete precast composite slab, which comprises a first precast composite plate, a second precast composite plate and a connecting piece, one side of the first precast composite plate is provided with the second precast composite plate, the top of the first precast composite plate and the top of the second precast composite plate are both provided with a plurality of connecting pieces, the side of the first precast composite plate close to the second precast composite plate is provided with a clamping groove, the side of the second precast composite plate close to the first precast composite plate is fixedly connected with a T-shaped clamping block, the T-shaped clamping block is clamped and connected with the clamping groove, the inner wall of the clamping groove is fixedly connected with a limiting rubber strip on both sides, the two sides of the clamping groove are provided with connecting holes extending into the first precast composite plate, the two sides of the T-shaped clamping block are fixedly connected with a thin rod, the utility model can seamlessly splice the PC concrete precast composite slab, can limit the splicing joint of the first precast composite plate and the second precast composite plate, and the connection is more compact and not easy to loosen.
[0004] The existing precast concrete composite slab is assembled with other precast components (such as shear walls, frame columns and beams) when the splicing joint is performed, but the structure of the splicing joint is relatively simple and lacks a certain firmness, and the PC concrete precast composite slab in the above-mentioned comparative example can only simply splice the first precast composite plate and the second precast composite plate by clamping, but the clamping method alone is relatively simple and lacks a certain connectivity.
[0005] Therefore, it is necessary to invent a precast concrete composite slab splicing joint structure to solve the above-mentioned problems. UTILITY MODEL CONTENTS
[0006] The utility model discloses a prefabricated concrete composite board splicing joint structure, through the protruding block of vice concrete composite board's front side is inserted into the recess of main concrete composite board rear side, and after the protruding block inserts the recess, will extrude the top block, make the top block move extrusion two sets of limiting block to the inside of protruding block, make limiting block from the upper and lower sides of protruding block telescopic, insert limiting block into the limiting slot of recess inside, thereby complete two sets of splicing joint limit fixed, to solve the prefabricated concrete composite board of above -mentioned background art, when splicing joint will adopt and other prefabricated component assembly, but the structure of this splicing joint is relatively simple, and also lacks certain firmness problem.
[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a prefabricated concrete composite board splicing joint structure, including main concrete composite board and vice concrete composite board,
[0008] Lattice reinforcement, all be arranged at main concrete composite board and vice concrete composite board surface, recess is seted up to main concrete composite board and vice concrete composite board rear side surface, protruding block is fixedly connected to the front side of main concrete composite board and vice concrete composite board, limiting slot is seted up to the inside upper and lower surface of recess, and horizontal reinforcement is fixedly arranged on the front side of main concrete composite board and vice concrete composite board upper and lower of protruding block,
[0009] Limiting mechanism, be arranged in limiting mechanism inside, be used for limiting splicing, the limiting mechanism includes top block and limiting block.
[0010] Preferably, the recess on the rear side of the main concrete composite board and the protruding block on the front side of the vice concrete composite board are movably connected, and the size of the protruding block is consistent with the size of the recess.
[0011] Preferably, a threaded groove is formed on the upper surface of the rear side of the main concrete composite board and the vice concrete composite board, and a bolt is screwed through the threaded groove.
[0012] Preferably, an insertion slot is formed on the upper and lower surfaces of the rear side of the main concrete composite board and the vice concrete composite board, and the horizontal reinforcement is movably connected with the insertion slot.
[0013] Preferably, the top block is movably arranged in the protruding block, first springs are fixedly arranged on the two sides of the top block, the limiting block is slidably connected to the upper and lower sides of the interior of the protruding block, a connecting plate is fixedly connected to the right side of the limiting block, and a second spring is fixedly connected to the lower side of the connecting plate.
[0014] Preferably, the inner upper and lower surfaces of the top block are inclined surfaces, the lower left side surface of the limiting block is an inclined surface, and the top block and the limiting block are used in cooperation.
[0015] In the above technical solution, the utility model provides technical effects and advantages:
[0016] By setting up a main concrete composite slab, a secondary concrete composite slab, a groove, a protrusion, and a limiting mechanism, the firmness of the main concrete composite slab and the secondary concrete composite slab can be strengthened during the splicing process. By inserting the protrusion on the front side of the secondary concrete composite slab into the groove on the rear side of the main concrete composite slab, the protrusion will squeeze the top block after being inserted into the groove, causing the top block to move into the protrusion and squeeze the two sets of limiting blocks. This causes the limiting blocks to extend and retract from the upper and lower sides of the protrusion and insert into the limiting groove inside the groove, thereby completing the limiting and fixing of the two sets of splicing joints.
[0017] By setting up a main concrete composite slab, a secondary concrete composite slab, protrusions, threaded grooves, bolts, slots, and transverse reinforcement, the two are spliced by inserting multiple transverse reinforcements on the front side of the secondary concrete composite slab into slots on the rear side of the main concrete composite slab. After splicing, the splicing is strengthened by bolts threaded through the secondary concrete composite slab on the front side of both the main concrete composite slab and the secondary concrete composite slab. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of the main concrete composite slab of this utility model;
[0021] Figure 3 This is a schematic diagram of the main concrete composite slab and the secondary concrete composite slab of this utility model.
[0022] Figure 4 This is a schematic diagram of the limiting mechanism structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the top block and limiting block structure of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Main concrete composite slab; 2. Secondary concrete composite slab; 3. Reinforcing steel lattice; 4. Groove; 5. Protrusion; 6. Threaded groove; 7. Bolt; 8. Slot; 9. Limiting groove; 10. Transverse reinforcement; 11. Limiting mechanism; 1101. Top block; 1102. First spring; 1103. Limiting block; 1104. Connecting plate; 1105. Second spring. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0027] This utility model provides, for example Figures 1-5 The precast concrete composite slab splice structure shown includes a main concrete composite slab 1 and a secondary concrete composite slab 2.
[0028] The lattice reinforcement 3 is set on the surface of the main concrete composite slab 1 and the secondary concrete composite slab 2. The rear surface of the main concrete composite slab 1 and the secondary concrete composite slab 2 is provided with a groove 4. The front side of the main concrete composite slab 1 and the secondary concrete composite slab 2 is fixedly connected with a protrusion 5. The upper and lower surfaces of the groove 4 are provided with a limiting groove 9. The front side of the main concrete composite slab 1 and the secondary concrete composite slab 2 is fixedly provided with transverse reinforcement 10.
[0029] A limiting mechanism 11 is installed inside the limiting mechanism 11 for limiting the splicing. The limiting mechanism 11 includes a top block 1101 and a limiting block 1103. By inserting the protrusion 5 on the front side of the secondary concrete composite slab 2 into the groove 4 on the rear side of the main concrete composite slab 1, the protrusion 5 will press the top block 1101 after being inserted into the groove 4, causing the top block 1101 to move into the protrusion 5 and press the two sets of limiting blocks 1103, so that the limiting blocks 1103 extend and retract from the upper and lower sides of the protrusion 5 and are inserted into the limiting groove 9 inside the groove 4, thereby completing the limiting and fixing of the two sets of splicing joints.
[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the groove 4 on the rear side of the main concrete composite slab 1 is movably engaged with the protrusion 5 on the front side of the secondary concrete composite slab 2. The size of the protrusion 5 matches the size of the groove 4. By inserting the protrusion 5 on the front side of the secondary concrete composite slab 2 into the groove 4 on the rear side of the main concrete composite slab 1, quick docking is achieved, strengthening the connection between the two.
[0031] like Figure 3 As shown, threaded grooves 6 are provided on the upper rear surface of the main concrete composite slab 1 and the secondary concrete composite slab 2. Bolts 7 pass through the internal threads of the threaded grooves 6. When the main concrete composite slab 1 and the secondary concrete composite slab 2 are joined together, the bolts 7 pass through them, thereby strengthening the firmness between them.
[0032] like Figure 3As shown, the main concrete composite slab 1 and the secondary concrete composite slab 2 are provided with the insertion slots 8 on the upper and lower surfaces of the rear side, and the transverse steel bars 10 are movably connected with the insertion slots 8, and the plurality of transverse steel bars 10 are inserted into the insertion slots 8 on the rear side of the main concrete composite slab 1, thereby forming the butt joint and strengthening the firmness between the two.
[0033] As shown in Figure 3 , Figure 4 and Figure 5 , the top block 1101 is movably arranged in the protrusion 5, the two sides of the top block 1101 are fixedly provided with the first springs 1102, the inside of the protrusion 5 is slidably connected with the limiting blocks 1103, the right side of the limiting block 1103 is fixedly connected with the connecting plate 1104, the lower side of the connecting plate 1104 is fixedly connected with the second spring 1105, and the protrusion 5 on the front side of the secondary concrete composite slab 2 is inserted into the groove 4 on the rear side of the main concrete composite slab 1, and after the protrusion 5 is inserted into the groove 4, the top block 1101 is pressed, the top block 1101 moves to the inside of the protrusion 5 and presses the two limiting blocks 1103, and the limiting blocks 1103 are extended from the upper and lower sides of the protrusion 5 and are inserted into the limiting slots 9 in the groove 4, thereby completing the limiting and fixing of the two splicing joints.
[0034] As shown in Figure 4 and Figure 5 , the inside upper and lower surfaces of the top block 1101 are provided as inclined surfaces, the lower left surface of the limiting block 1103 is provided as an inclined surface, and the top block 1101 is used in cooperation with the limiting block 1103, and because the rear side of the top block 1101 is an inclined surface, the lower left inclined surface of the limiting block 1103 can be pressed and pushed, so that the limiting block 1103 can be extended and retracted from the inside of the protrusion 5.
[0035] The utility model works as follows: when the main concrete composite slab 1 and the secondary concrete composite slab 2 need to be spliced, the protrusion 5 on the front side of the secondary concrete composite slab 2 is inserted into the protrusion 5 on the rear side of the protrusion 5, and at the same time, the plurality of transverse steel bars 10 on the front side of the secondary concrete composite slab 2 are inserted into the plurality of insertion slots 8 on the rear side of the transverse steel bars 10 to complete the butt joint, and when the protrusion 5 is inserted into the groove 4, the top block 1101 is pressed, the top block 1101 moves to the inside of the protrusion 5 and presses the two first springs 1102, because the upper and lower rear sides of the top block 1101 are inclined surfaces, the lower left sides of the two limiting blocks 1103 are pressed, and the limiting blocks 1103 are extended and retracted from the upper and lower sides of the protrusion 5, the limiting blocks 1103 are inserted into the limiting slots 9 in the groove 4, thereby completing the limiting and fixing of the two splicing joints, and then the first springs 1102 are inserted through the main concrete composite slab 1, the secondary concrete composite slab 2 and the two sides of the protrusion 5, thereby completing the splicing joint between the two, and the use process of the prefabricated concrete composite slab splicing joint structure is completed in this way.
[0036] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A precast concrete composite slab joint structure, characterised in that: Main concrete laminated slab (1) and vice concrete laminated slab (2) are included; Lattice reinforcement (3) is arranged on the surface of the main concrete laminated slab (1) and the vice concrete laminated slab (2), recesses (4) are formed on the rear surface of the main concrete laminated slab (1) and the vice concrete laminated slab (2), the front side of the main concrete laminated slab (1) and the vice concrete laminated slab (2) is fixedly connected with the protruding block (5), the inside of the recess (4) is provided with the limiting groove (9) on the upper and lower surfaces, and the front side of the main concrete laminated slab (1) and the vice concrete laminated slab (2) is fixedly provided with the transverse reinforcement (10) on the upper and lower sides. The limiting mechanism (11) is arranged in the limiting mechanism (11) and is used for limiting splicing, and the limiting mechanism (11) comprises a top block (1101) and a limiting block (1103).
2. A precast concrete composite slab spliced joint structure according to claim 1, characterized in that: The recess (4) on the rear side of the main concrete laminated slab (1) is movably connected with the protruding block (5) on the front side of the vice concrete laminated slab (2), and the size of the protruding block (5) is matched with the size of the recess (4).
3. A precast concrete composite slab spliced joint structure according to claim 1, characterized in that: Threaded grooves (6) are formed on the upper surfaces of the rear sides of the main concrete laminated slab (1) and the vice concrete laminated slab (2), and the inside of the threaded groove (6) is penetrated by the bolt (7).
4. A precast concrete composite slab spliced joint structure according to claim 1, characterized in that: The rear upper and lower surfaces of the main concrete laminated slab (1) and the vice concrete laminated slab (2) are provided with the insertion groove (8), and the transverse reinforcement (10) is movably connected with the insertion groove (8).
5. A precast concrete composite slab spliced joint structure according to claim 1, characterized in that: The top block (1101) is movably arranged in the protruding block (5), the two sides of the top block (1101) are fixedly provided with the first spring (1102), the inside of the protruding block (5) is slidably connected with the limiting block (1103) on the upper and lower sides, the right side of the limiting block (1103) is fixedly connected with the connecting plate (1104), and the lower side of the connecting plate (1104) is fixedly connected with the second spring (1105).
6. A precast concrete composite slab spliced joint structure as claimed in claim 1, wherein: The inner upper and lower surfaces of the top block (1101) are provided as inclined surfaces, the lower left side surface of the limiting block (1103) is provided as an inclined surface, and the top block (1101) and the limiting block (1103) are used in cooperation.