Prestressed concrete laminated slab

Abstract

The utility model relates to the technical field of concrete laminated slabs, and discloses a prestressed concrete laminated slab which comprises a plurality of inner ribs, the inner ribs are arranged in a crossed mode, a bottom plate wraps the outer sides of the inner ribs, a plurality of fixing rib plates are fixed to the upper plate face of the bottom plate at intervals, and clamping pipes are arranged on the two sides of the upper plate face of the bottom plate. The clamping pipes and the fixing rib plates are arranged in parallel, a connecting strip is installed between every two adjacent bottom plates which are connected in parallel with the fixing rib plates, the two sides of the connecting strip are connected with the clamping pipes of the two bottom plates in a clamped mode respectively, and a limiting plate is installed between every two adjacent bottom plates which are connected in the mode of being perpendicular to the fixing rib plates. According to the device, the problems that construction is tedious due to cast-in-place vacancy filling plates, and ribs need to be formed on the laminated plates and are inconvenient to transport are solved, the connecting strips and the limiting plates are used for connecting joints of the two plates, the ribs do not need to be formed, the vacancy filling plates do not need to be poured, and transportation and construction are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete composite slabs, and more particularly to a prestressed concrete composite slab. Background Art

[0002] Composite slabs are assembled monolithic slabs made from precast panels and cast-in-place reinforced concrete layers. They offer excellent integrity, with smooth upper and lower surfaces, making them easy to finish. They are suitable for high-rise buildings and large-span structures that require high overall rigidity.

[0003] At present, the internal reinforcement of concrete composite slabs on the market usually extends a certain distance beyond the edge of the precast slab. When two adjacent composite slabs are connected, they are used to strengthen the compressive strength of the cast-in-place void-filling slab and enhance the adhesion between the void-filling slab and the composite slab. However, the internal reinforcement extending beyond the precast slab is inconvenient for transportation, and the cast-in-place void-filling slab requires the installation of additional molds, which increases the difficulty of construction. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a prestressed concrete composite slab that is easy to transport and construct.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A prestressed concrete composite slab comprises a plurality of internal reinforcements, wherein the plurality of internal reinforcements are arranged crosswise with each other, a bottom plate is wrapped around the outside of the plurality of internal reinforcements, a plurality of fixed ribs are fixed at intervals on the upper plate surface of the bottom plate, clamping tubes are provided on both sides of the upper plate surface of the bottom plate, the clamping tubes and the fixed ribs are arranged parallel to each other, a connecting strip is installed between two adjacent bottom plates connected parallel to the fixed ribs, the two sides of the connecting strip are respectively clamped with the clamping tubes of the two bottom plates, a limiting plate is installed between two adjacent bottom plates connected perpendicular to the fixed ribs, and the limiting plate is clamped with the plurality of fixed ribs.

[0007] The utility model is further configured as follows: a fixed tube is connected to the bottom of the fixed rib, the fixed tube is wavy, the trough section of the fixed tube is buried in the bottom plate, and the peak section of the fixed tube is buried in the fixed rib; the clamping tube includes a bent tube, the bent tube is wavy corresponding to the fixed tube, the trough section of the bent tube is buried in the bottom plate, and the peak section of the bent tube is arranged toward the side away from the bottom plate; each waveform of the bent tube is commonly connected to a pressure strip, and the pressure strip is parallel to the fixed rib.

[0008] The utility model is further configured as follows: the connecting strip includes a movable rib plate, the bottom of the movable rib plate is connected to two connecting pipes, the two connecting pipes are respectively arranged toward both sides of the movable rib plate, and are respectively clamped with the clamping pipes of the bottom plates on both sides.

[0009] The utility model is further configured as follows: a clamping space is formed between two adjacent sections of the curved pipe waveform and the pressure strip and the bottom plate; the connecting pipe is divided into a plurality of clamping parts and a corresponding plurality of supporting parts; the clamping parts are curved parallel to the bottom plate; the clamping parts can be engaged with the clamping space; a supporting part is commonly connected between two adjacent clamping parts; the supporting part is arched and extends in an inclined upward direction toward the side away from the bottom plate; the arch tops of the plurality of supporting parts are commonly wrapped in the movable rib.

[0010] The utility model is further configured as follows: a first card slot is provided at both ends of the upper surface of the fixed rib plate, a second card slot is correspondingly provided at both ends of the upper surface of the movable rib plate, and a card block is provided on both sides of the limit plate, and the two card blocks are respectively connected with several first card slots and several second card slots of the two adjacent bottom plates.

[0011] The utility model is further configured as follows: seams are provided on all four sides of the upper surface of the bottom plate, and the seams are in a 1 / 4 cylindrical shape.

[0012] The advantages of the utility model are:

[0013] Clamping tubes are provided on both sides of the base plate, and a connecting strip is provided between the two base plates spliced ​​in a direction parallel to the clamping tube. The movable ribs of the connecting strip are provided above the connecting surface of the two base plates, and the two connecting tubes below the movable ribs are respectively connected to the clamping tubes on the two base plates, thereby fixing the position of the movable ribs. Both ends of the movable ribs and the fixed ribs are provided with clamping grooves, and a limit plate is provided between the two connected ribs. The base plates can be closely connected to each other. The connecting strips and the limit plates cooperate with the subsequent pouring of concrete to strengthen the connection strength between the two adjacent base plates without the need for filling plates, reducing the difficulty of construction, and at the same time, no reinforcement is required, which is convenient for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model in an assembled state;

[0016] Figure 3 for Figure 2 The front view shown;

[0017] Figure 4 for Figure 2 Left side view shown;

[0018] Figure 5 This is a schematic diagram of the connecting strip structure of the utility model;

[0019] Figure 6 for Figure 5 Left side view shown;

[0020] In the figure: 1. Bottom plate; 11. Joint; 2. Internal rib; 3. Fixed rib; 31. Slot 1; 32. Fixed pipe; 4. Snap-on pipe; 41. Bend pipe; 42. Pressure strip; 5. Connecting strip; 51. Movable rib; 52. Slot 2; 53. Connecting pipe; 531. Snap-on portion; 532. Support portion; 6. Limiting plate; 61. Block. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0023] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0024] See also Figure 1-6 , the utility model provides the following technical solutions:

[0025] A prestressed concrete composite slab includes a plurality of internal reinforcements 2, the plurality of internal reinforcements 2 being arranged crosswise with each other, a bottom plate 1 being wrapped around the outside of the plurality of internal reinforcements 2, a plurality of fixed ribs 3 being fixed at intervals on the upper plate surface of the bottom plate 1, clamping tubes 4 being provided on both sides of the upper plate surface of the bottom plate 1, the clamping tubes 4 being arranged parallel to the fixed ribs 3, a connecting strip 5 being installed between two adjacent bottom plates 1 connected parallel to the fixed ribs 3, the two sides of the connecting strip 5 being clamped with the clamping tubes 4 of the two bottom plates 1, a limiting plate 6 being installed between two adjacent bottom plates 1 connected perpendicularly to the fixed ribs 3, the limiting plate 6 being clamped with the plurality of fixed ribs 3;

[0026] The inner reinforcement 2 is made of cold-drawn low-carbon steel bars, which are arranged in a mesh shape along the longitudinal and transverse directions. After being drawn to generate prestress, concrete is poured on the periphery to form the bottom plate 1, so that the bottom plate 1 has prestress and its compressive resistance is enhanced.

[0027] The fixed rib 3 is made of HPC concrete, which is easier to bond with the subsequently poured concrete than steel of the same volume, and is lighter in weight and easier to transport.

[0028] A connecting strip 5 is clamped between the two bottom plates 1. This, combined with the subsequent pouring of concrete, makes it easier for the two bottom plates 1 to be joined together. When the connecting strip 5 is impacted, the impact force is dispersed to the two bottom plates 1, avoiding the impact force acting directly on the connection surface, preventing cracks from occurring at the connection surface, and ensuring the connection strength between the two adjacent bottom plates 1.

[0029] A limit plate 6 is clamped between two adjacent bottom plates 1 arranged in the transverse direction. The limit plate 6 cooperates with the subsequently poured concrete to pull the two bottom plates 1 toward the center, thereby improving the compressive resistance of the connection surface.

[0030] The bottom of the fixed rib 3 is connected to a fixed tube 32, which is wavy. The trough section of the fixed tube 32 is buried in the bottom plate 1, and the peak section of the fixed tube 32 is buried in the fixed rib 3. The clamping tube 4 includes a bend 41, which is wavy corresponding to the fixed tube 32. The trough section of the bend 41 is buried in the bottom plate 1, and the peak section of the bend 41 is arranged toward the side away from the bottom plate 1. Each wave shape of the bend 41 is connected to a layering strip 42, which is parallel to the fixed rib 3. A clamping space is formed between two adjacent sections of the wave shape of the bend 41, the layering strip 42 and the bottom plate 1.

[0031] The connecting bar 5 includes a movable rib 51, and two connecting pipes 53 are connected to the bottom of the movable rib 51. The two connecting pipes 53 are respectively arranged on both sides of the movable rib 51;

[0032] The connecting tube 53 is divided into a plurality of clamping portions 531 and corresponding supporting portions 532. The clamping portions 531 are curved and parallel to the bottom plate 1. The clamping portions 531 can be engaged with the clamping space. A supporting portion 532 is connected between two adjacent clamping portions 531. The supporting portion 532 is arched and extends in an upward direction away from the bottom plate 1. The arch tops of the supporting portions 532 are collectively wrapped within the movable rib 51.

[0033] During assembly, all the clamping parts 531 extend into the clamping space accordingly, thereby fixing the position of the movable rib 51. The movable rib 51 is made of the same material as the fixed rib 3, and the movable rib 51 is arranged above the connecting surface of the two bottom plates 1. When the connecting strip 5 is impacted, the impact force is dispersed along the connecting pipes 53 on both sides to the bottom plates 1 on both sides, avoiding the impact force from directly acting on the connection, preventing the connection from cracking, and increasing the strength of the connection. There is no need for additional casting of gap filling plates, which reduces the process and does not require the bottom plate to have ribs extended outward, which is convenient for transportation and construction.

[0034] Both ends of the upper plate surface of the fixed rib 3 are provided with a card groove 1 31, and both ends of the upper plate surface of the movable rib 51 are provided with a corresponding card groove 2 52. Both sides of the limiting plate 6 are provided with a card block 61. The two card blocks 61 are respectively connected with several card grooves 1 31 and several card grooves 2 52 of the two adjacent bottom plates 1. The limiting plate 6 pulls the fixed rib 3 and the movable rib 51 toward the center from both sides, thereby improving the strength of the connection and reducing the risk of cracking.

[0035] There are joints 11 around the upper surface of the base plate 1. The joints 11 are 1 / 4 cylindrical. When two adjacent base plates 1 are spliced ​​together, the two joints 11 form a complete semi-cylindrical shape. When the concrete is in the semi-cylindrical joints 11, it has a large surface tension, so it is not easy to leak downward, ensuring the flatness of the connection surface between the two base plates 1, making the stress at the connection surface balanced and not easy to crack due to impact.

[0036] Specifically, clamping tubes 4 are provided on both sides of the base plate 1, and a connecting strip 5 is provided between the two base plates 1 spliced ​​in a direction parallel to the clamping tube 4. The movable ribs 51 of the connecting strip 5 are provided above the connecting surface of the two base plates 1, and the two connecting tubes 53 below the movable ribs 51 are respectively connected to the clamping tubes 4 on the two base plates 1, thereby fixing the position of the movable ribs 51. Both ends of the movable ribs 51 and the fixed ribs 3 are provided with clamping grooves, and a limit plate 6 is provided between the two connected ribs. The base plates 1 can be closely connected to each other, and the connecting strips 5 and the limit plates 6 cooperate with the subsequent pouring of concrete to strengthen the connection strength between the two adjacent base plates 1 without the need for filling plates, reducing the construction difficulty, and at the same time, no reinforcement is required, which is convenient for transportation.

[0037] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0039] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar pairs of elements and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A prestressed concrete composite slab comprising a plurality of internal reinforcements (2), characterized in that: Several of the inner ribs (2) are arranged crosswise with each other, and several of the inner ribs (2) are wrapped with a bottom plate (1) on the outside, and several fixed ribs (3) are fixed at intervals on the upper plate surface of the bottom plate (1). Snap-on tubes (4) are arranged on both sides of the upper plate surface of the bottom plate (1), and the snap-on tubes (4) and the fixed ribs (3) are arranged parallel to each other. A connecting strip (5) is installed between two adjacent bottom plates (1) connected parallel to the fixed ribs (3), and both sides of the connecting strip (5) are snap-on with the snap-on tubes (4) of the two bottom plates (1), respectively. A limiting plate (6) is installed between two adjacent bottom plates (1) connected perpendicular to the fixed ribs (3), and the limiting plate (6) is snap-on with several fixed ribs (3).

2. The prestressed concrete composite slab according to claim 1, characterized in that: The bottom of the fixed rib (3) is connected to a fixed pipe (32), the fixed pipe (32) is wavy, the trough section of the fixed pipe (32) is buried in the bottom plate (1), and the peak section of the fixed pipe (32) is buried in the fixed rib (3), the clamping pipe (4) includes a bent pipe (41), the bent pipe (41) is wavy corresponding to the fixed pipe (32), the trough section of the bent pipe (41) is buried in the bottom plate (1), and the peak section of the bent pipe (41) is arranged toward the side away from the bottom plate (1), each wave shape of the bent pipe (41) is commonly connected to a pressure strip (42), and the pressure strip (42) is parallel to the fixed rib (3).

3. The prestressed concrete composite slab according to claim 2, characterized in that: The connecting strip (5) comprises a movable rib (51), the bottom of which is connected to two connecting pipes (53), the two connecting pipes (53) being respectively arranged towards the two sides of the movable rib (51) and respectively clamped with the clamping pipes (4) of the bottom plates (1) on both sides.

4. The prestressed concrete composite slab according to claim 3, characterized in that: A clamping space is formed between two adjacent sections of the curved tube (41) and the pressure strip (42) and the bottom plate (1). The connecting tube (53) is divided into a plurality of clamping portions (531) and a corresponding plurality of supporting portions (532). The clamping portions (531) are curved parallel to the bottom plate (1). The clamping portions (531) can be engaged with the clamping space. A supporting portion (532) is commonly connected between two adjacent clamping portions (531). The supporting portion (532) is arched and extends in an obliquely upward direction away from the bottom plate (1). The arch tops of the plurality of supporting portions (532) are commonly wrapped in the movable rib (51).

5. The prestressed concrete composite slab according to claim 4, characterized in that: Both ends of the upper plate surface of the fixed rib plate (3) are provided with a first card slot (31), and both ends of the upper plate surface of the movable rib plate (51) are provided with a second card slot (52) correspondingly. Both sides of the limit plate (6) are provided with a card block (61), and the two card blocks (61) are respectively connected with a plurality of first card slots (31) and a plurality of second card slots (52) of two adjacent bottom plates (1).

6. The prestressed concrete composite slab according to claim 1, characterized in that: The upper surface of the bottom plate (1) is provided with seams (11) on all four sides, and the seams (11) are in a 1 / 4 cylindrical shape.

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