Cantilever steel beam laminated slab embedded sleeve structure

Abstract

The utility model belongs to the field of assembly type constructional engineering, and particularly discloses a cantilever steel beam laminated slab embedded sleeve structure which comprises a laminated bottom plate, at least two embedded sleeves are arranged on the laminated bottom plate in advance, the two embedded sleeves are fixed on the laminated bottom plate side by side, a cast-in-place layer is poured above the laminated bottom plate, and the cast-in-place layer is fixed on the laminated bottom plate. The upper portion of the embedded sleeve is connected with opposite-pull screws, an overhanging beam is arranged between the opposite-pull screws, the opposite-pull screws above the overhanging beam are sleeved with a fixing steel plate, and the fixing steel plate is pressed on the overhanging beam through connection of nuts and the opposite-pull screws so that the overhanging beam can be fixed to the cast-in-place layer. The slab sleeve is pre-buried in the laminated slab, the cantilever steel beam is fixed through the split bolt and the fixing steel plate, and the problems that in the prior art, an upper concrete protection layer is insufficient, stability is affected, mounting and dismounting are inconvenient, and construction quality is affected due to the fact that the laminated slab needs to be damaged are solved.

Description

Technical Field

[0001] The utility model belongs to the field of assembled building engineering, and particularly relates to a cantilevered steel beam composite plate embedded sleeve structure. Background Art

[0002] There are two main existing cantilever beam reinforcement technologies. One is to directly embed anchors in the cast-in-place layer on the upper part of the composite slab, place its U-shaped steel bars on the upper part of the prefabricated composite bottom plate for fixation, and add two reinforcing steel bars in the vertical direction. After the cast-in-place layer is poured, the cantilever steel beam is fixed with steel plates, bolts, wooden wedges, etc. This technology has poor safety and stability due to the thin thickness of the cast-in-place layer, which may cause insufficient fixing strength of the U-shaped steel bars, resulting in damage and affecting the stability of the cantilever frame.

[0003] The other method is to drill holes in the composite board after installation, and then pass U-shaped steel bars through the holes to fix them. This technology requires the installation of U-shaped steel bars at the bottom of the floor slab, which is inconvenient to construct and requires damage to the composite board, which will affect the strength of the composite board and easily cause quality problems.

[0004] In both of the above technologies, the embedded steel bars need to be cut after the cantilevered external frame is removed. If not handled properly, it is easy to cause the steel bars to rust and damage, increasing the risk of structural damage. Utility Model Content

[0005] In view of the problems existing in the existing dust removal methods, a cantilever steel beam composite plate embedded sleeve structure is proposed. The utility model embeds a flat sleeve in the composite plate, and fixes the cantilever steel beam by tension bolts and fixed steel plates, thereby solving the problems in the prior art such as insufficient upper concrete protective layer affecting stability, inconvenient installation and dismantling, and the need to destroy the composite plate affecting construction quality.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a cantilever steel beam composite plate embedded sleeve structure, including a composite base plate, at least two embedded sleeves are preset on the composite base plate, the two embedded sleeves are fixed side by side on the composite base plate, a cast-in-place layer is cast above the composite base plate, tension screws are connected above the embedded sleeves, a cantilever beam is arranged between the tension screws, a fixed steel plate is sleeved on the tension screws above the cantilever beam, the fixed steel plate is pressed on the cantilever beam by connecting the nut with the tension screw, and the cantilever beam is fixed on the cast-in-place layer.

[0007] Furthermore, the embedded sleeve is a flat sleeve, and reinforcing steel bars are crisscrossedly arranged above the base of the flat sleeve, and the reinforcing steel bars are prefabricated inside the composite bottom plate.

[0008] Furthermore, the number of the embedded sleeves is four.

[0009] Furthermore, the cantilever beam is an I-beam, and wooden wedges are arranged between the two sides of the I-beam and the tension screws.

[0010] Furthermore, a compression pad is provided between the fixed steel plate and the cantilevered cross beam.

[0011] Furthermore, the upper surface of the embedded sleeve is lower than the top surface of the cast-in-place layer.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model directly embeds the flat sleeve in the composite plate, accurately positions it, and avoids the problem that the on-site embedding is easily displaced due to the concrete pouring. Moreover, the thickness of the concrete protective layer on the upper part of the embedded sleeve is large, the stability is good, the installation and removal of the tension screw and the fixed steel plate are convenient, and manpower and material resources can be greatly saved, and it has good economy, safety and practicality. In addition, the sleeve embedding work is completed in the factory, which reduces the on-site work and speeds up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure after the cast-in-place layer is poured.

[0016] Figure 3 Schematic diagram of the location of reinforcing steel bars.

[0017] Figure 4 This is the distribution diagram of this structure.

[0018] In the figure, 1 is the composite base plate, 2 is the embedded sleeve, 3 is the cast-in-place layer, 4 is the tension screw, 5 is the cantilever beam, 6 is the fixed steel plate, 7 is the nut, 8 is the clamping pad, 9 is the wooden wedge, 10 is the reinforcing steel bar, and 11 is the cap. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, a cantilever steel beam composite plate embedded sleeve structure includes a composite base plate 1, on which at least two embedded sleeves 2 are preset, and 4 or 6 can also be selected according to the length of the cantilever beam 5. The two embedded sleeves 2 are fixed side by side on the composite base plate 1. The composite base plate 1 is prefabricated in advance in the factory, and the embedded sleeves 2 are combined with the composite base plate 1 in the factory.

[0020] like Figure 2As shown, a cast-in-place layer 3 is cast above the composite bottom plate 1. After the casting is completed, the upper surface of the embedded sleeve 2 is lower than the top surface of the cast-in-place layer 3. A tension screw 4 is connected above the embedded sleeve 2, and a cantilever beam 5 is arranged between the tension screws 4. A fixing steel plate 6 is sleeved on the tension screws 4 above the cantilever beam 5. The fixing steel plate 6 is pressed on the cantilever beam 5 by nuts 7 connected to the tension screws 4 to fix the cantilever beam 5 on the cast-in-place layer 3.

[0021] like Figure 3 As shown, the embedded sleeve 2 in the utility model adopts a flat sleeve, and reinforcing steel bars 10 are crisscrossedly arranged above the base of the flat sleeve, and the reinforcing steel bars 10 are prefabricated inside the composite bottom plate 1.

[0022] The utility model fixes the cantilever beam 5 of the cantilever scaffolding by means of tension bolts and a fixing steel plate 6 , thereby increasing the thickness of the concrete on the upper part of the sleeve, thereby increasing the strength of the entire cantilever beam 5 .

[0023] The installation process of the utility model is as follows: before the implementation of this technology, it is necessary to arrange the cantilever steel beams of the cantilever scaffolding in advance, determine the number of embedded sleeves 2 and their positions on the composite board, and indicate them in the composite board detailed drawing. When the composite board is produced, the flat sleeve is embedded in place, the bottom flat plate is fixed to the composite board steel mesh, and reinforcing steel bars 10 are set for reinforcement. The length of the upper embedded sleeve 2 is slightly lower than that of the cast-in-place layer 3, and a PVC cap 11 is set for protection.

[0024] After the cast-in-place layer 3 of the composite slab is poured, the PVC cap 11 is removed, and the matching tension screw 4 is installed. Then the cantilever beam 5 is placed in place, and the upper part is fixed with a fixed steel plate 6 and a nut 7. After the cantilever frame is used, the nut 7 and the steel plate are removed, the screw is unscrewed, and finally the hole of the embedded sleeve 2 is filled with grouting material.

[0025] In addition, in order to increase the connection strength, a compression pad 8 is provided between the fixed steel plate 6 and the cantilever beam 5. At the same time, a wooden wedge 9 is inserted between the steel sides of the cantilever beam 5 and the tension screw 4 to increase the friction.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A cantilever steel beam composite plate embedded sleeve structure, characterized in that: The invention comprises a composite base plate (1), wherein at least two embedded sleeves (2) are preset on the composite base plate (1), the two embedded sleeves (2) are fixed side by side on the composite base plate (1), a cast-in-place layer (3) is cast above the composite base plate (1), a tension screw (4) is connected above the embedded sleeve (2), a cantilever beam (5) is arranged between the tension screws (4), and a fixing steel plate (6) is sleeved on the tension screws (4) above the cantilever beam (5); the fixing steel plate (6) is pressed onto the cantilever beam (5) by connecting the tension screws (4) with nuts (7), thereby fixing the cantilever beam (5) on the cast-in-place layer (3).

2. The cantilever steel beam composite plate embedded sleeve structure according to claim 1 is characterized in that: The embedded sleeve (2) is a flat sleeve, and reinforcing steel bars (10) are arranged in a crisscross pattern above the base of the flat sleeve. The reinforcing steel bars (10) are prefabricated inside the composite base plate (1).

3. The cantilever steel beam composite plate embedded sleeve structure according to claim 2 is characterized in that: The number of the embedded sleeves (2) is four.

4. The cantilever steel beam composite plate embedded sleeve structure according to claim 3 is characterized in that: The cantilever crossbeam (5) is an I-beam, and wooden wedges (9) are provided between the two sides of the I-beam and the tension screw rods (4).

5. The cantilever steel beam composite plate embedded sleeve structure according to claim 4 is characterized in that: A compression pad (8) is provided between the fixed steel plate (6) and the cantilevered crossbeam (5).

6. The cantilever steel beam composite plate embedded sleeve structure according to claim 1 is characterized in that: The upper surface of the embedded sleeve (2) is lower than the top surface of the cast-in-place layer (3).

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