Connecting structure of prefabricated floor plate and concrete beam

Abstract

The connecting structure of the prefabricated floor plates and the concrete beam comprises the concrete beam, the prefabricated floor plates and connecting assemblies, and the concrete beam is fixedly connected with the two prefabricated floor plates through the connecting assemblies; the connecting assembly comprises a connecting bolt pin and a steel bar net rack, and the connecting bolt pin is arranged in a bolt pin hole of the connecting tongue-and-groove in the prefabricated floor plate; the reinforcing steel bar net rack is arranged on the connecting reinforcing steel bars exposed out of the connecting rabbets of the prefabricated floor plates; the connecting rabbets of the prefabricated floor plates are filled and leveled up through concrete pouring. The connecting rabbets and the bolt pin holes in the prefabricated floor plate are connected with the bolt pins on the concrete beam in a matched mode, so that connection between the prefabricated floor plate and the concrete beam can be enhanced, meanwhile, on-site machining is more convenient and faster, and time is saved; meanwhile, the connecting bolt pins are used for connecting and fixing the prefabricated floor plates and the concrete beams and transmitting stress between the prefabricated floor plates and the concrete beams; in addition, the steel bar net rack bears connection fixation and stress transmission between the prefabricated floor plates, and therefore the stability and safety of the fabricated building are integrally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a connecting structure between a precast floor slab and a concrete beam. Background Art

[0002] With the development of the times, prefabricated buildings are becoming more and more popular in today's building structural forms. Prefabricated buildings have many advantages. They can not only effectively reduce project costs, but also improve project quality and reduce waste of resources. However, at present, the construction of composite slabs and concrete beams formed by multiple pourings is mostly adopted, which has a long construction period, and there are joints at the connection between the precast concrete floor slab and the floor beam, resulting in poor force transfer and poor cooperative working performance. Therefore, there is an urgent need for a connecting structure between a prefabricated precast concrete floor slab and a concrete floor beam to solve the above problems. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a connecting structure between a precast floor slab and a concrete beam.

[0004] To solve the above technical problem, the technical solution proposed by the utility model is: a connecting structure between a precast floor slab and a concrete beam, including a concrete beam, a precast floor slab and a connecting component. The concrete beam is fixedly connected with two precast floor slabs through the connecting component. The connecting component includes a connecting pin bolt and a steel bar grid. The connecting pin bolt is arranged in the pin bolt hole of the connecting socket on the precast floor slab. The steel bar grid is arranged on the connecting steel bars exposed on the connecting socket of the precast floor slab. The connecting socket of the precast floor slab is filled and leveled by concrete pouring.

[0005] For the above connecting structure between a precast floor slab and a concrete beam, preferably, the steel bar grid is fixedly connected with the connecting pin bolt or the connecting steel bars exposed on the connecting socket.

[0006] For the above connecting structure between a precast floor slab and a concrete beam, preferably, the steel bar grid includes reinforcing bars and connecting socket stirrups. The connecting steel bars exposed on the connecting socket of the precast floor slab are in an L shape. The reinforcing bars are arranged in the channels between the connecting pin bolts and the connecting steel bars. The connecting socket stirrups are arranged below or above the connecting steel bars, and the connecting socket stirrups are connected to at least two oppositely arranged connecting pin bolts.

[0007] For the above connecting structure between a precast floor slab and a concrete beam, preferably, the connecting socket stirrups are fixedly connected with the connecting pin bolts or the connecting socket stirrups are fixedly connected with the connecting pin bolts and the connecting steel bars at the same time.

[0008] Compared with the prior art, the advantages of the present utility model are as follows: In the present utility model, the connecting rabbet and bolt holes on the precast floor slab cooperate with the bolts on the concrete beam, which can strengthen the connection between the precast floor slab and the concrete beam, and at the same time make on-site processing more convenient and fast, saving time; meanwhile, the connecting bolts bear the connection and fixation between the precast floor slab and the concrete beam and the force transmission between the two; in addition, the steel bar grid bears the connection and fixation between the precast floor slabs and the force transmission, thereby improving the stability and safety of the prefabricated building as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the connection structure between the precast floor slab and the concrete beam in Embodiment 1.

[0010] Figure 2 It is a schematic diagram of the connection structure of the connection components in Embodiment 1.

[0011] Figure 3 It is a schematic diagram of the structure of the precast floor slab in Embodiment 1.

[0012] Figure 4 It is a schematic diagram of the connection structure between the precast floor slab and the concrete beam in Embodiment 2.

[0013] Figure 5 It is a schematic diagram of the connection structure of the connection components in Embodiment 2.

[0014] LEGEND DESCRIPTION

[0015] 1. Concrete beam; 2. Precast floor slab; 21. Negative moment steel bar; 22. Bolt hole; 3. Connection component; 31. Connecting bolt; 32. Steel bar grid; 33. Reinforcing rib; 34. Rabbet stirrup. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To facilitate the understanding of the present utility model, the following will describe the present utility model more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present utility model is not limited to the following specific embodiments.

[0017] It should be particularly noted that when an element is described as "fixed to, fixedly connected to, connected to, or communicated with" another element, it can be directly fixed, fixedly connected, connected, or communicated to the other element, or indirectly fixed, fixedly connected, connected, or communicated to the other element through other intermediate connecting members.

[0018] Unless otherwise defined, all the technical terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present utility model. Embodiment 1

[0019] As Figure 1 shown, a connection structure between a precast floor slab 2 and a concrete beam 1 includes a concrete beam 1, a precast floor slab 2, and a connection assembly. Two precast floor slabs 2 are fixedly connected to the concrete beam 1 through the connection assembly. As Figure 2 described, the connection assembly includes a connection bolt 31 and a steel bar grid 32. The connection bolt 31 is arranged in a bolt hole 322 of the connection tongue-and-groove on the precast floor slab 2; the steel bar grid 32 is arranged on the connection steel bars exposed on the connection tongue-and-groove of the precast floor slab 2; the connection tongue-and-groove of the precast floor slab 2 is filled and leveled by concrete pouring. The steel bar grid 32 is fixedly connected to the connection bolt 31 or the connection steel bars exposed on the connection tongue-and-groove. In this embodiment, the connection steel bars are the parts of the steel bar mesh embedded in the precast floor slab 2 that are exposed at the connection tongue-and-groove. In this embodiment, as Figure 3 shown at the position of the connection tongue-and-groove of the precast floor slab 2, the steel bar mesh is provided with a negative moment steel bar 21, and the part exposed at the connection tongue-and-groove is the upper half of the negative moment steel bar 21.

[0020] In this embodiment, during connection, one end of the connection tongue-and-groove of the precast floor slab 2 overlaps on the concrete beam 1. After a single precast floor slab 2 overlaps on the concrete beam 1, it covers one side of the top area of the concrete beam 1; the connection bolt 31 on one side of the top of the concrete beam 1 is inserted into the bolt hole 322 of the precast floor slab 2. Another precast floor slab 2 is overlapped on the other side of the top of the concrete beam 1 according to the same structure. In this embodiment, the connection between the connection tongue-and-groove and the bolt hole 322 on the precast floor slab 2 and the bolts on the concrete beam 1 can strengthen the connection between the precast floor slab 2 and the concrete beam 1, and at the same time make on-site processing more convenient and fast, saving time; at the same time, the connection bolt 31 undertakes the connection and fixation of the precast floor slab 2 and the concrete beam 1 and the force transmission between the two.

[0021] In this embodiment, when two precast floor slabs 2 overlap on the concrete beam 1, the connection steel bars exposed at the connection tongue-and-grooves of the two precast floor slabs 2 are arranged side by side; the steel bar grid 32 is arranged above the connection steel bars exposed at the connection tongue-and-grooves of the two precast floor slabs 2 and is welded and fixed; in this way, the two precast floor slabs 2 are connected together; the steel bar grid 32 undertakes the connection and fixation between the precast floor slabs 2 and the force transmission, thereby improving the stability and safety of the prefabricated building as a whole.

[0022] In this embodiment, the steel bar grid 32 can be single-layer or double-layer. Embodiment 2

[0023] In this embodiment, as Figure 4 and Figure 5As shown, the steel bar grid 32 includes reinforcing bars 33 and connecting keyway stirrups 34; the connecting steel bars exposed on the connecting keyways of the precast floor slabs 2 are L-shaped; the reinforcing bars 33 are arranged in the channels between the connecting bolts 31 and the connecting steel bars; the connecting keyway stirrups 34 are arranged below or above the connecting steel bars, and the connecting keyway stirrups 34 are connected to at least two oppositely arranged connecting bolts 31.

[0024] In this embodiment, when the keyway stirrup 34 is arranged above the connecting steel bar, the keyway stirrup 34 is quadrilateral, and the four symmetric connecting bolts 31 are hooped together, and then the keyway stirrup 34 is welded to the connecting bolts 31 and the connecting steel bar; in this way, the keyway stirrup 34 connects the connecting bolts 31 connecting the two precast floor slabs 2 together, thereby improving the stability of the connection port between the concrete beam 1 and the precast floor slab 2. After the connection is completed, the connecting steel bar at the connecting keyway is located between the reinforcing bar 33 and the keyway stirrup 34.

[0025] When the keyway stirrup 34 is arranged below the connecting steel bar, the keyway stirrup 34 is also quadrilateral, and the four symmetric connecting bolts 31 are hooped together, and the keyway stirrup 34 is welded to the connecting bolts 31 and the connecting steel bar; after the connection is completed, the keyway stirrup 34 is located between the reinforcing bar 33 and the connecting steel bar at the connecting keyway. This connection method has higher stability, but the on-site construction difficulty is greater than the case where the keyway stirrup 34 is arranged above the connecting steel bar.

[0026] Other parts of this embodiment are the same as those of Embodiment 1.

Claims

1. A connection structure between a prefabricated floor panel and a concrete beam, characterized in that: It comprises a concrete beam, a prefabricated floor panel and a connection assembly, wherein the concrete beam is fixedly connected to two prefabricated floor panels via the connection assembly; the connection assembly comprises a connection pin and a steel mesh, wherein the connection pin is arranged in a pin hole of a connection groove on the prefabricated floor panel; the steel mesh is arranged on the connection steel bars exposed on the connection groove of the prefabricated floor panel; the connection groove of the prefabricated floor panel is filled and leveled by pouring concrete.

2. The connection structure of the prefabricated floor panel and the concrete beam according to claim 1 is characterized in that: The steel mesh frame is fixedly connected to the connecting steel bars exposed on the connecting pins or the connecting tongues and grooves.

3. The connection structure of the prefabricated floor panel and the concrete beam according to claim 1 is characterized in that: The steel grid includes reinforcing bars and connecting tongue-and-groove stirrups; the connecting steel bars exposed on the connecting tongues of the prefabricated floor panels are L-shaped; the reinforcing bars are passed through the channels between the connecting pins and the connecting steel bars; the connecting tongue-and-groove stirrups are arranged below or above the connecting steel bars, and the connecting tongue-and-groove stirrups are connected to at least two oppositely arranged connecting pins.

4. The connection structure of the prefabricated floor panel and the concrete beam according to claim 3 is characterized in that: The connecting tongue-and-groove stirrups are fixedly connected to the connecting pins, or the connecting tongue-and-groove stirrups are fixedly connected to the connecting pins and the connecting steel bars at the same time.

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