Prefabricated composite floor slab post-cast strip supporting device

Abstract

The utility model discloses a prefabricated composite floor slab post-cast strip supporting device which comprises a cast-in-place structure floor slab, a first prefabricated composite floor slab and a second prefabricated composite floor slab are arranged on the outer surface of the cast-in-place structure floor slab, and the first prefabricated composite floor slab is arranged on the outer surface of the left side of the cast-in-place structure floor slab. The second prefabricated composite floor slab is arranged on the outer surface of the right side of the cast-in-place structure floor slab, an arch-shaped bevel frame is integrally poured on the inner side surfaces of the first prefabricated composite floor slab and the second prefabricated composite floor slab, and a supporting pipe is inserted into the inner side surface of the arch-shaped bevel frame in a penetrating mode. The outer surfaces of the cast-in-place structure floor slab, the first prefabricated composite floor slab and the second prefabricated composite floor slab are covered with plywood, the supporting tension can be improved by pre-burying the arch-shaped corner bracket structures in the prefabricated composite floor slabs, supporting pipes are inserted into the arch-shaped corner brackets in a penetrating mode, locking and fixing are conducted through bolts, the plywood can be fixed, the supporting structure is firm and stable, and the service life of the plywood is prolonged. And moreover, the supporting structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of a post-cast strip support device for a prefabricated composite floor slab, and more specifically, to a post-cast strip support device for a prefabricated composite floor slab. Background Art

[0002] Post-cast strips are concrete strips left at the corresponding positions of the foundation slab, wall, and beam in accordance with the design or construction specifications to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement during construction. Since the post-cast strip is suspended on one side and is very brittle, prefabricated composite floor slabs are used to support it.

[0003] The post-cast strip template support template surface at the joint of the traditional integral prefabricated composite floor is not tightly fitted with the prefabricated composite floor surface, and the template surface support is not stable enough, which affects the molding quality of the post-cast strip;

[0004] As in the prior art, the authorization announcement number CN219118750U discloses a prefabricated composite floor slab post-casting strip support device, including a prefabricated composite cast-in-place structural floor slab and a plywood, a square steel pipe one is fixedly installed on the plywood by fixing plywood bolts, a square steel pipe two is fixedly installed on the square steel pipe one, a fixing mechanism is installed between the square steel pipe two and the prefabricated composite cast-in-place structural floor slab, and by setting bolts and reserved nut holes in the prefabricated composite floor slab, the formwork support device can be closely fitted to the surface of the prefabricated composite floor slab, thereby reducing the possibility of leakage to a certain extent. The rate can effectively improve the pouring quality of the post-casting belt. By setting nut ropes and nut bolt holes, the bolts can be bound, so that after the bolts are separated from the reserved nut holes in the prefabricated composite floor slab, the bolts are still connected to the square steel pipes, which can effectively avoid the loss of bolts. The advantages are: by pre-embedding the reserved nut holes in the prefabricated composite floor slab at the bottom of the prefabricated composite cast-in-place structure floor slab, the template surface support can effectively cling to the prefabricated composite floor slab surface without leakage. The support device is fixed by bolts, and the support device will not shift or deform significantly, thereby enhancing the stability of the support device;

[0005] The fixing structure in the above-mentioned patent adopts bolts for fixing and supporting, and the embedded nuts are located inside the prefabricated composite floor slab. The embedded nuts are generally expansion nuts, which generate small tensile supporting force. When the bolts are tightened and fixed, the reverse pressure generated can easily loosen the internal nuts. When fixed, the overall structure is not firm, and the fixed supporting structure is complicated and costly. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a support device for the post-cast strip of a prefabricated composite floor slab. By pre-embedding an arched angle frame structure in the prefabricated composite floor slab, the supporting tension can be improved, and a supporting tube is inserted along the arched angle frame and fixed by bolts to fix the plywood. The supporting structure is firm and stable, has high tensile resistance, and is simplified to reduce costs.

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A prefabricated composite floor slab post-cast strip support device comprises a cast-in-place structural floor slab, wherein the outer surface of the cast-in-place structural floor slab is provided with a first prefabricated composite floor slab and a second prefabricated composite floor slab, wherein the first prefabricated composite floor slab is arranged on the left outer surface of the cast-in-place structural floor slab, and the second prefabricated composite floor slab is arranged on the right outer surface of the cast-in-place structural floor slab, and the inner surfaces of the first prefabricated composite floor slab and the second prefabricated composite floor slab are integrally cast with an arched angle frame, and the inner surfaces of the arched angle frame are interspersed with a support pipe, wherein the cast-in-place structural floor slab, The outer surfaces of the first prefabricated composite floor and the second prefabricated composite floor are covered with plywood, the inner end surface of the support tube is pressed against the outer surface of the plywood, the inner surface of the arched corner frame is connected with bolts through threads, and the bolts are locked and fixed to the outer end surface of the support tube. By pre-embedding the arched corner frame structure in the prefabricated composite floor, the supporting tension can be increased, and the supporting tube is inserted into the arched corner frame and locked and fixed by bolts to fix the plywood. The supporting structure is firm and stable, has high tensile resistance, and is simplified to reduce costs.

[0009] Furthermore, the support tube adopts a trapezoidal tube structure, and the surfaces on both sides of the inner end thereof are reduced in diameter.

[0010] Furthermore, the inner surface of the support tube is provided with support ribs, and the support ribs are welded and fixed to the inner surface of the support tube.

[0011] Furthermore, the arched corner frame adopts an arched corner structure, and the upper and lower sides of the outer end are provided with embedded corner nodes, and the embedded corner nodes are embedded in the inner surfaces of the first prefabricated composite floor slab and the second prefabricated composite floor slab.

[0012] Furthermore, the wall thickness of the support tube is one centimeter, and the outer surfaces of the upper and lower ends of the support tube are tightly fitted to the inner surface of the arched corner frame.

[0013] Furthermore, the arched corner frames are evenly distributed from top to bottom on the inner surfaces of the first prefabricated composite floor and the second prefabricated composite floor, and six groups of the arched corner frames are distributed on the inner surfaces of the first prefabricated composite floor and the second prefabricated composite floor.

[0014] Furthermore, a threaded hole is provided on the outer end surface of the arched angle frame, and a bolt is connected to the inner side surface of the arched angle frame along the threaded hole.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) By embedding an arched angle frame structure in the prefabricated composite floor, the supporting tension can be increased, and a supporting pipe is inserted into the arched angle frame and fixed by bolts to fix the plywood. The supporting structure is firm and stable, has high tensile resistance, and is simplified to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the overall structure of the utility model;

[0019] Figure 3 This is a distribution relationship view of the first prefabricated composite floor and the arched support frame of the utility model;

[0020] Figure 4 This is a view of the arched support frame of the utility model;

[0021] Figure 5 This is a structural view of the support tube of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1 cast-in-place structural floor, 2 first precast composite floor, 3 second precast composite floor, 4 arch support frame, 5 support pipe, 6 plywood, 7 bolts, 50 support ribs, 40 embedded corner joints. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1-5A prefabricated composite floor slab post-casting strip supporting device comprises a cast-in-place structural floor slab 1, the outer surface of the cast-in-place structural floor slab 1 is provided with a first prefabricated composite floor slab 2 and a second prefabricated composite floor slab 3, the first prefabricated composite floor slab 2 is arranged on the left outer surface of the cast-in-place structural floor slab 1, the second prefabricated composite floor slab 3 is arranged on the right outer surface of the cast-in-place structural floor slab 1, the inner surfaces of the first prefabricated composite floor slab 2 and the second prefabricated composite floor slab 3 are integrally cast with an arched corner frame 4, the inner surface of the arched corner frame 4 is interspersed with a supporting pipe 5, and the cast-in-place structural floor slab The outer surfaces of the board 1, the first prefabricated composite floor 2 and the second prefabricated composite floor 3 are covered with plywood 6, the inner end surface of the support tube 5 is pressed on the outer surface of the plywood 6, the inner side surface of the arched corner frame 4 is connected with a bolt 7 through a thread, and the bolt 7 is locked and fixed to the outer end surface of the support tube 5. The embedded nut is generally an expansion nut, which generates a small tensile support force. When the bolt is locked and fixed, the reverse pressure generated is easy to loosen the internal nut. When it is fixed, the overall structural firmness is not good, and the fixed support structure is complicated and the cost is high.

[0027] The support tube 5 adopts a trapezoidal tube structure, and the surfaces on both sides of the inner end thereof are reduced in diameter and contracted, and a small area is formed at the reduced diameter and contracted part. The small area squeezes the support tube 5, which can increase the stability of the extruded plywood 6 of the support tube 5, and the pressure is large and the extrusion is firm;

[0028] The inner surface of the support tube 5 is provided with support ribs 50, which are welded and fixed to the inner surface of the support tube 5, so as to improve the support strength of the support tube 5 and stabilize the extrusion structure;

[0029] The arched angle frame 4 adopts an arched angle structure, and the upper and lower sides of the outer end thereof are provided with angle embedded sections 40, and the angle embedded sections 40 are embedded in the inner surface of the first prefabricated composite floor slab 2 and the second prefabricated composite floor slab 3, so as to facilitate pre-embedded fixing. The outward tensile strength of the arched angle frame 4 is greater than that of the expansion nut, and the arched angle frame 4 will not loosen even if subjected to reverse pressure when squeezed;

[0030] The wall thickness of the support tube 5 is one centimeter. The upper and lower outer surfaces of the support tube 5 are closely attached to the inner surface of the arched corner frame 4, providing the support strength of the support tube 5. The upper and lower surfaces of the support tube 5 are attached and inserted into the inner side of the arched corner frame 4, and no shaking occurs, and the installation is stable.

[0031] The arched corner frames 4 are evenly distributed from top to bottom on the inner surface of the first prefabricated composite floor 2 and the second prefabricated composite floor 3. Six groups of the arched corner frames 4 are distributed on the inner surface of the first prefabricated composite floor 2 and the second prefabricated composite floor 3. The six groups are distributed and six groups of support pipes 5 can be inserted. The extruded plywood 6 can be fixed by the six groups of support pipes 5. The fixation is firm, the distribution is even, and the force is even.

[0032] The outer end surface of the arched angle frame 4 is provided with a threaded hole, and the bolt 7 is connected to the inner side surface of the arched angle frame 4 along the threaded hole, so as to facilitate the installation of the bolt 7;

[0033] When it is used, the first prefabricated composite floor 2 and the second prefabricated composite floor 3 are arranged on the outer surface of the cast-in-place structural floor 1, the first prefabricated composite floor 2 is arranged on the left outer surface of the cast-in-place structural floor 1, and the second prefabricated composite floor 3 is arranged on the right outer surface of the cast-in-place structural floor 1. The outer surfaces of the first prefabricated composite floor 2 and the second prefabricated composite floor 3 are covered with plywood 6. When it is supported, an arched corner frame 4 is integrally cast through the inner surfaces of the prefabricated composite floor 2 and the second prefabricated composite floor 3. The inner surface of the arched corner frame 4 is inserted with a support pipe 5. The inner surface of the arched corner frame 4 is connected with a bolt 7 by a thread. The bolt 7 is locked and fixed to the outer end surface of the support pipe 5, and the support pipe 5 can be locked, so that the support pipe 5 can be squeezed and fixed on the outer surface of the plywood 6, and the squeezed fixed support can be performed, and the support is stable;

[0034] In addition, embedded corner sections 40 are arranged on the upper and lower sides of the outer end of the arched corner frame 4, and the embedded corner sections 40 are embedded in the inner surfaces of the first prefabricated composite floor 2 and the second prefabricated composite floor 3 for easy embedding and fixing. The outward tensile strength of the arched corner frame 4 is greater than that of the expansion nut. When the arched corner frame 4 is squeezed, it will not loosen even when subjected to reverse pressure, thereby improving the structural firmness. The supporting structure is simple, the cost is low, and the interlaced layout construction is convenient.

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A post-cast strip support device for a prefabricated composite floor slab, comprising a cast-in-place structural floor slab (1), characterized in that: The outer surface of the cast-in-place structural floor (1) is provided with a first prefabricated composite floor (2) and a second prefabricated composite floor (3); the first prefabricated composite floor (2) is provided on the left outer surface of the cast-in-place structural floor (1); the second prefabricated composite floor (3) is provided on the right outer surface of the cast-in-place structural floor (1); the inner surfaces of the first prefabricated composite floor (2) and the second prefabricated composite floor (3) are integrally cast with an arched corner frame (4); the inner surfaces of the arched corner frame (4) are penetrated by a support tube (5); the outer surfaces of the cast-in-place structural floor (1), the first prefabricated composite floor (2) and the second prefabricated composite floor (3) are covered with a plywood (6); the inner end surface of the support tube (5) is pressed against the outer surface of the plywood (6); the inner surface of the arched corner frame (4) is connected with a bolt (7) by a thread; the bolt (7) is locked and fixed to the outer end surface of the support tube (5).

2. A post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: The support tube (5) adopts a trapezoidal tube structure, and the surfaces on both sides of the inner end thereof are reduced in diameter and contracted.

3. A post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: The inner surface of the support tube (5) is provided with support ribs (50), and the support ribs (50) are welded and fixed to the inner surface of the support tube (5).

4. The post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: The arched corner frame (4) adopts an arched corner structure, and the upper and lower sides of the outer end thereof are provided with corner embedded nodes (40), and the corner embedded nodes (40) are embedded in the inner side surfaces of the first prefabricated composite floor slab (2) and the second prefabricated composite floor slab (3).

5. The post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: The wall thickness of the support tube (5) is one centimeter, and the outer surfaces of the upper and lower ends of the support tube (5) are tightly fitted on the inner surface of the arched corner frame (4).

6. The post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: The arched corner frames (4) are evenly distributed from top to bottom on the inner surfaces of the first prefabricated composite floor slab (2) and the second prefabricated composite floor slab (3), and six groups of the arched corner frames (4) are distributed on the inner surfaces of the first prefabricated composite floor slab (2) and the second prefabricated composite floor slab (3).

7. The post-cast strip support device for prefabricated composite floor slab according to claim 1, characterized in that: A threaded hole is arranged on the outer end surface of the arched angle frame (4), and a bolt (7) is connected to the inner side surface of the arched angle frame (4) along the threaded hole.

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