Socket and spigot joint type rib-out-free laminated slab

Abstract

A socket and spigot joint type non-rib-out laminated slab comprises a bottom plate, comb teeth ribs, a first prefabricated rib plate and a steel bar truss, the first prefabricated rib plate and the steel bar truss are located on the bottom plate, and the first prefabricated rib plate is arranged close to the side edge of the bottom plate; the steel bar truss comprises horizontal bars and inclined bars, the horizontal bars comprise upper horizontal bars and lower horizontal bars located below the upper horizontal bars, the number of the lower horizontal bars is two, one ends of the inclined bars are connected with the upper horizontal bars, and the other ends of the inclined bars are connected with the lower horizontal bars; the comb teeth ribs are arranged away from the first prefabricated rib plates; each comb tooth rib comprises a connecting rib and joint ribs uniformly distributed in the length direction of the connecting rib; the joint bars deviate from the first prefabricated rib plates, and inserting holes matched with the joint bars are formed in the first prefabricated rib plates. The utility model discloses a socket and spigot joint type non-rib-out laminated slab which is convenient to install and higher in strength, not only solves the problems that an existing non-rib-out laminated slab is low in integrity and prone to cracking, but also solves the problems that a traditional laminated slab is inconvenient to hoist, and ribs are prone to hurting workers.

Description

Technical Field

[0001] The present invention belongs to the technical field of composite panels for building construction, and in particular relates to a socket-and-spigot type composite panel without reinforcement. Background Art

[0002] The composite slab is a prefabricated structure. After being prefabricated in the factory, the composite slab is transported to the construction site and assembled on site. At present, in order to ensure the strength, the composite slab will have ribs, which are also called "beard ribs". Through the "beard ribs", the composite slab and the surrounding structure are cast into a whole, reducing the probability of subsequent quality problems.

[0003] The reinforcement of prefabricated composite slabs affects all aspects from design to construction.

[0004] (1) Design: Increase the design workload. The design must take into account the avoidance of reinforcement between the reinforcement and beams, walls, and columns, which increases the workload of detailed design.

[0005] (2) Production: Reduce production efficiency and increase production costs. Specifically including:

[0006] 1) The degree of automation in component production is limited, and the steel bar process cannot be welded automatically, requiring manual operation;

[0007] 2) Increased mold costs. Plate reinforcement requires holes in the mold. Furthermore, the diameters and indirections of the steel bars used in different projects and specifications vary, leading to non-standard mold holes and high mold loss. 3) Reduced mold table utilization. Rebar removal occupies a larger area of ​​the mold table, resulting in reduced mold table utilization, reduced component plant production capacity, and increased amortization costs for prefabricated components.

[0008] 4) Reduced efficiency of prefabricated composite beams. Due to the reinforcement of the slab, the upper main reinforcement of the prefabricated composite beam cannot be installed in one go at the component factory and can only be threaded on site, which reduces efficiency.

[0009] (3) Transportation: The utilization rate of transport vehicles decreases and transportation costs increase;

[0010] (4) Component installation: During on-site installation, the reinforcement of the prefabricated base plate must be avoided from the reinforcement of beams, columns, and walls. Even the reinforcement of the plate must be interwoven and interwoven before it can be installed in place, which reduces work efficiency and increases installation costs. If it is a two-way plate, there will generally be a post-casting joint, formwork, and support, and formwork-free installation is not possible.

[0011] At the same time, if the reinforcement of the prefabricated base plate is not carefully produced, it may injure the workers during the production, transportation and lifting process.

[0012] We can imagine how the workers on site would handle the collision between plate reinforcement and beam reinforcement, as well as wall and column reinforcement, if the problem was left to them to deal with. This would undoubtedly be a quality risk.

[0013] In order to solve the above problems caused by the reinforcement of the composite slab, there are currently composite slabs without reinforcement at all. However, the integrity of the composite slab without reinforcement at all with the surrounding structure is poor, and problems such as cracking are prone to occur later.

[0014] To solve this problem, there is currently a new type of non-reinforced structure, such as the patent document with authorization announcement number "CN 210013357 U" which discloses a truss reinforced concrete composite slab without beard bars.

[0015] The invention comprises a precast concrete slab with truss reinforcement, wherein the slab ends are provided with a row of slots, the depth of which is less than the thickness of the truss reinforcement precast concrete slab. The ends of the truss reinforcement precast concrete slabs are mounted on structural beams. Connecting reinforcements are sequentially placed in the corresponding slots of two adjacent truss reinforcement precast concrete slabs. Concrete is poured using the truss reinforcement precast concrete slabs and the structural beams as formwork to form a cast-in-place concrete layer. The utility model enhances the crack resistance and interlocking effect of the concrete composite slab by providing truss reinforcements. The V-shaped slots enhance the anchoring force between the truss reinforcement precast concrete slabs and the cast-in-place concrete layer and structural beams.

[0016] However, in this way, the connecting bars need to be placed one by one at the construction site, which is slow. At the same time, the strength of the connecting bars in this form is low and the use effect is not good. Summary of the Invention

[0017] The present invention aims to provide a socket-and-spigot type non-reinforced composite plate with a simple structure and good use effect.

[0018] In order to solve the above technical problems, the present invention provides the following technical solutions: a socket-and-spigot type non-reinforced composite plate, comprising a bottom plate, comb-tooth reinforcement, a first prefabricated rib located on the bottom plate and a steel truss, wherein the first prefabricated rib is arranged adjacent to the side of the bottom plate; the steel truss comprises horizontal reinforcement and inclined reinforcement, the horizontal reinforcement comprises an upper horizontal reinforcement and a lower horizontal reinforcement located below the upper horizontal reinforcement, the number of the lower horizontal reinforcement is two, one end of the inclined reinforcement is connected to the upper horizontal reinforcement, and the other end is connected to the lower horizontal reinforcement; the comb-tooth reinforcement is arranged away from the first prefabricated rib; the comb-tooth reinforcement comprises a connecting reinforcement and a dowel evenly distributed along the length direction of the connecting reinforcement; the dowel is arranged away from the first prefabricated rib, and the first prefabricated rib is provided with a socket to match the dowel.

[0019] A casting hole connected with the insertion hole is provided on the top surface of the first prefabricated rib plate.

[0020] The inclined reinforcement is located between two inserted reinforcements.

[0021] A second prefabricated rib is also provided on the bottom plate. A guide groove is provided on the top of the second prefabricated rib, and the inserted reinforcement is placed in the guide groove.

[0022] The guide groove is provided with bending ribs, which are arranged downward.

[0023] The two lower horizontal ribs are symmetrical with respect to the upper horizontal rib.

[0024] The upper horizontal reinforcement, lower horizontal reinforcement, inclined reinforcement and connecting reinforcement are all threaded reinforcement.

[0025] The inserted ribs of the comb-tooth ribs are provided with downwardly arranged support ribs, and the support ribs are arranged near the ends of the comb-tooth ribs.

[0026] Through the above technical scheme, the technical effects of the present invention are as follows: 1. The utility model discloses a socket-type non-reinforced composite plate, which is easy to install and has higher strength. It not only solves the problem of low integrity and easy cracking of the current non-reinforced composite plate, but also solves the problem that the traditional composite plate is inconvenient to lift and the reinforcement is easy to hurt workers; 2. The set steel truss is a triangular structure with high stability and high strength; 3. The set comb-tooth ribs can be extended as needed, or do not extend from the bottom plate where they are located during transportation, to avoid injury to people, and also facilitate the lifting of the composite plate into place; 4. The set supporting ribs can give the comb-tooth ribs a certain supporting strength, thereby improving their effect; 5. The set first prefabricated ribs and the second prefabricated ribs further improve the strength of the entire bottom plate, facilitate the connection with the comb-tooth ribs, and also facilitate the connection with the subsequent composite plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the utility model;

[0028] Figure 2 Schematic diagram of two laminated panels being installed together;

[0029] Figure 3 for Figure 2 Schematic diagram of the composite slab after pouring;

[0030] Figure 4 Schematic diagram of the base plate;

[0031] Figure 5 Schematic diagram of comb teeth ribs;

[0032] 1- bottom plate; 2- first precast rib; 3- second precast rib; 4- inserted reinforcement; 51- inclined reinforcement; 52- lower horizontal reinforcement; 53- upper horizontal reinforcement; 6- connecting reinforcement; 7- supporting reinforcement; 8- bent reinforcement; 9- guide groove; 10- insertion hole; 11- casting hole. DETAILED DESCRIPTION

[0033] Example 1, a socket-and-spigot type composite plate without reinforcement. The utility model is mainly used in prefabricated structures. During the transportation and lifting of the composite plate, the reinforcement structure is not inserted. Before pouring, it is only necessary to push the comb-tooth reinforcement inside to extend the inserted reinforcement 4, so that the connection between the composite plates is tighter and can become an integrated structure, effectively reducing the probability of cracking.

[0034] The socket-and-spigot type composite plate without reinforcement comprises a base plate 1, which is a prefabricated structure; a steel truss is provided on the base plate 1 along the length direction of the base plate 1, wherein the steel truss comprises horizontal ribs and inclined ribs 51, the horizontal ribs comprise upper horizontal ribs 53 and lower horizontal ribs 52, the number of the lower horizontal ribs 52 is two; the number of the upper horizontal rib 53 is one; the upper horizontal rib 53 and the lower horizontal rib 52 are parallel to each other, and the two lower horizontal ribs 52 are symmetrical with respect to the upper horizontal rib 53. The inclined rib 51 is connected between the upper horizontal rib 53 and the lower horizontal rib 52, and the two inclined ribs 51 form an inclined rib 51 group. During implementation, the two inclined ribs 51 in an inclined rib 51 group are connected to the same horizontal rib at both ends, and the other ends are connected to the two lower horizontal ribs 52 respectively. In this way, the inclined ribs 51 and the horizontal ribs form a triangular structure, which is more stable and has better structural performance of the composite plate. The groups of inclined ribs 51 are evenly distributed along the length direction of the upper horizontal rib 53 , which improves the strength of the bottom plate 1 and ensures the performance of the bottom plate 1 .

[0035] To facilitate connection, comb-tooth reinforcement is connected to the steel truss, and the comb-tooth reinforcement includes connecting reinforcement 6. The length direction of the connecting reinforcement 6 is the same as the length direction of the horizontal reinforcement. The connecting reinforcement 6 is connected to the inserted reinforcement 4, and the inserted reinforcement 4 is arranged along the width direction of the base plate 1. The inserted reinforcement 4 is inserted between two groups of inclined reinforcements 51. When in use, the connecting reinforcement 6 can be pushed to drive the inserted reinforcement 4 to move along the width direction of the base plate 1.

[0036] The comb teeth ribs are tensioned by connecting ribs 6, which provide higher strength and a certain degree of crack resistance.

[0037] A first precast rib 2 is provided on the base plate 1 to coordinate with the comb-tooth ribs. This first precast rib 2 is positioned adjacent to the side of the base plate 1 and is provided with a socket 10 that mates with the insert rib 4. During use, the connecting rib 6 can be pushed, allowing the insert rib 4 to be inserted into the socket 10 of the other composite plate. In this embodiment, it is important to note that the insert rib 4 slides away from the socket 10 on its own composite plate and toward the socket 10 on the other composite plate. A pouring hole 11 is provided on the top surface of the first precast rib 2, communicating with the socket 10. Concrete can be poured into the socket 10 through this pouring hole 11, enhancing the stability of the joint through a wet connection.

[0038] To ensure greater stability of the comb-tooth ribs during use, a second precast rib 3 is provided on the other side of the composite plate opposite the first precast rib 2. A guide groove 9 is provided at the top of the second precast rib 3, into which the insert rib 4 is placed. In this embodiment, the horizontal centerline of the guide groove 9 coincides with the horizontal centerline of the socket 10. The end of the insert rib 4 can slide from the guide groove 9 into the socket 10 of the other composite plate, thereby connecting the two composite plates and forming a single unit. A bend rib 8 is provided on the guide groove 9 to limit the vertical movement of the insert rib 4, ensuring its stability. The end of the bend rib 8 is positioned downward, thereby limiting upward movement between the guide groove 9 and the bend rib 8, confining the insert rib 4 within this area and ensuring stability.

[0039] As an alternative to this embodiment, in order to fix the comb-tooth ribs during transportation, a connecting steel wire is provided on the upper horizontal rib 53, and the connecting steel wire is connected to the inserted rib 4 of the comb-tooth rib.

[0040] During use, when the composite slab needs to be transported, the comb-toothed reinforcement is inserted between the two inclined reinforcements 51, so that the connecting reinforcement 6 is parallel to the upper horizontal reinforcement 53, and the inserted reinforcement 4 is perpendicular to the upper horizontal reinforcement 53. The ends of the inserted reinforcement 4 are placed in the guide grooves 9. In this way, the inserted reinforcement 4 does not protrude from the composite slab, which does not affect transportation. After the composite slab is hoisted into place, the connecting reinforcement 6 is pushed so that the ends of the inserted reinforcement 4 are inserted into the sockets 10 of the adjacent composite slab. Concrete is then poured into the sockets 10 to achieve a tight connection between the two, so that the two composite slabs form a whole. On the one hand, this avoids the inconvenience of transportation and the risk of injury to people caused by conventional reinforcement methods. On the other hand, it also avoids the problem of adjacent composite slabs being separated, unstable, and prone to cracking in conventional methods without reinforcement.

[0041] Example 2. This example differs from Example 1 in that the interposed ribs 4 of the comb-tooth ribs are provided with downwardly directed support ribs 7, with the lower ends of the support ribs 7 contacting the upper surface of the base plate 1. In this example, the support ribs 7 provide support for the comb-tooth ribs. Furthermore, during transportation, the support ribs 7 can be connected to the first prefabricated rib 2 using steel wire, thereby securing the comb-tooth ribs during transportation and preventing the interposed ribs 4 from leaking out due to movement of the comb-tooth ribs, potentially impacting transportation and personnel safety.

[0042] Example 3: This example differs from Example 1 in that the upper horizontal rib 53, the lower horizontal rib 52, and the connecting rib 6 are all threaded ribs, wherein the specifications of the upper horizontal rib 53 are: The specifications of the lower horizontal rib 52 are The specifications of the connecting rib 6 are: The specifications of dowel 4 are: Of course, the above is only one embodiment, and the use of other forms of steel bars still falls within the scope of protection of this application.

[0043] The applicant is currently carrying out the Phase II project of the Hexi Campus of Nanjing Children's Hospital. The total construction period of the project is 900 calendar days, the land area is 22,744.00 square meters, and the construction area is 136,290.36 square meters, of which the above-ground construction area is 81,021.39 square meters and the underground area is 55,268.97 square meters. The project is large in scale and the construction period is tight. If conventional composite slabs are used, the construction speed will be greatly reduced, and there is a risk of not being able to deliver the project on time. After using the socket-type unreinforced composite slabs of this solution, the construction speed is greatly improved and the construction effect is good. The composite plate has no reinforcement during transportation and hoisting. After the composite plate is hoisted into place, the comb-tooth reinforcement is pushed out and inserted into the socket 10 of the adjacent composite plate. During pouring, concrete enters the socket 10 through the pouring hole 11 to achieve wet connection, thereby realizing the installation of the two composite plates. In this process, there are steel bars between the two composite plates, which have high strength and higher installation efficiency. After the two composite plates are installed together, a pouring layer is poured on the bottom plate 1 of the composite plate to further improve the strength.

[0044] The utility model discloses a socket-and-spigot type composite plate without reinforcement. The composite plate is easy to install and has higher strength. It not only solves the problems of low integrity and easy cracking of the current composite plate without reinforcement, but also solves the problem that the traditional composite plate is inconvenient to lift and the reinforcement is easy to hurt workers.

Claims

1. A socket-and-spigot type composite plate without reinforcement, characterized in that: It includes a bottom plate, comb teeth reinforcement, a first prefabricated rib located on the bottom plate and a steel truss, wherein the first prefabricated rib is arranged near the side of the bottom plate; the steel truss includes horizontal reinforcement and inclined reinforcement, the horizontal reinforcement includes upper horizontal reinforcement and lower horizontal reinforcement located below the upper horizontal reinforcement, there are two lower horizontal reinforcements, one end of the inclined reinforcement is connected to the upper horizontal reinforcement, and the other end is connected to the lower horizontal reinforcement; the comb teeth reinforcement is arranged away from the first prefabricated rib; the comb teeth reinforcement includes connecting reinforcement and dowels evenly distributed along the length direction of the connecting reinforcement; the dowels are arranged away from the first prefabricated rib, and the first prefabricated rib is provided with insertion holes for matching the dowels.

2. The socket-and-spigot type composite plate without reinforcement according to claim 1, characterized in that: A casting hole connected with the insertion hole is provided on the top surface of the first prefabricated rib plate.

3. The socket-and-spigot type composite plate without reinforcement according to claim 2, characterized in that: The inclined reinforcement is located between two inserted reinforcements.

4. The socket-and-spigot type composite plate without reinforcement according to claim 3, characterized in that: A second prefabricated rib is also provided on the bottom plate. A guide groove is provided on the top of the second prefabricated rib, and the inserted reinforcement is placed in the guide groove.

5. The socket-and-spigot type composite plate without reinforcement according to claim 4, characterized in that: The guide groove is provided with bending ribs, which are arranged downward.

6. The socket-and-spigot type composite plate without reinforcement according to claim 5, characterized in that: The two lower horizontal ribs are symmetrical with respect to the upper horizontal rib.

7. The socket-and-spigot type composite plate without reinforcement according to claim 6, characterized in that: The upper horizontal reinforcement, lower horizontal reinforcement, inclined reinforcement and connecting reinforcement are all threaded reinforcement.

8. The socket-and-spigot type composite plate without reinforcement according to claim 7, characterized in that: The inserted ribs of the comb-tooth ribs are provided with downwardly arranged support ribs, and the support ribs are arranged near the ends of the comb-tooth ribs.

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