Prefabricated concrete composite floor slab

Abstract

The utility model discloses a prefabricated concrete composite floor slab which comprises a floor slab body, a fixing protruding strip, a top fixing steel bar, a transverse fixing steel bar and a friction thin groove, the friction thin groove is formed in the upper portion of the floor slab body, the top fixing steel bar is arranged on the upper portion of the floor slab body, and an isolation rubber mat is installed below the floor slab body. Transverse fixing steel bars are arranged on the left side of the floor slab body, bolt fixing rings are arranged below the transverse fixing steel bars, fixing protruding strips are arranged on the left side of the floor slab body, and fixing bayonets are formed in the right side of the floor slab body; according to the structure, the bolt fixing rings are mounted on the transverse fixing steel bars, so that sufficient downward pressure can be provided and the fixing effect can be enhanced through better attachment of bolts and a weighing mechanism, and cement paste can be prevented from leaking from gaps between floor slabs during pouring operation in cooperation with the isolation rubber mats covering the two sides of the lower portion of the floor slab body.

Description

Technical Field

[0001] The utility model relates to the technical field of composite floor slabs, in particular to a prefabricated concrete composite floor slab. Background Art

[0002] The composite floor is an assembled integral floor made of precast panels and cast-in-place reinforced concrete layers. The composite floor has good integrity, and the upper and lower surfaces of the panels are flat, which is convenient for the decoration of the finishing layer. It is suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity. The composite floor is an assembled integral floor made of precast panels and cast-in-place reinforced concrete layers. The precast panels are not only one of the components of the floor structure, but also the permanent formwork of the cast-in-place reinforced concrete superimposed layer. Horizontal equipment pipelines can be laid in the cast-in-place superimposed layer. The composite floor has good integrity, high rigidity, can save formwork, and the upper and lower surfaces of the panels are flat, which is convenient for the decoration of the finishing layer. It is suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity. The span of the composite floor is generally 4 to 6 meters, and the maximum span can reach 9 meters. One component of the composite floor is the cast-in-place concrete layer, and its thickness varies depending on the span of the floor, but it should at least be equal to the thickness of the precast thin plate. As the span increases, expanded polystyrene boards are often filled in the cast-in-place concrete layer; the expanded polystyrene boards are laid on the prefabricated thin plates to form a box section to reduce the weight of the cast-in-place concrete and can be used as a thermal insulation and sound insulation layer for the composite floor. Since negative steel bars are arranged in the cast-in-place concrete layer, some peak fulcrums are formed, making the box section a continuous structure. In the cast-in-place layer, steel bars are installed and various pipelines are laid according to the requirements of joint structure and fire protection. However, the existing composite floor has some shortcomings, such as:

[0003] Publication No.: CN219604639U describes a composite floor, which includes a hydrogenated concrete board, a rigid frame, a support, sound insulation cotton, a cement slurry protective layer, a connecting frame and a connecting assembly, wherein the connecting assembly includes a first connecting rod, a second connecting rod, a connecting shaft, and a reinforced shaft end. When using the utility model, the rigid frame is supported by the support, the cement slurry protective layer is connected to the rigid frame, and then fixed by the connecting frame, and the hydrogenated concrete is irrigated therein to form it. After being fixed and formed, the sound insulation cotton is stuffed into the sound insulation layer to improve the sound insulation effect of the hydrogenated concrete board, and then the first connecting rod is inserted into the connecting hole of the hydrogenated concrete board, and the second connecting rod is inserted into another hydrogenated concrete board. The first connecting rod and the second connecting rod are connected by the connecting shaft, which ensures that the connecting rods of the two hydrogenated concrete boards are stable and the compressive resistance is enhanced. Since the floor structure is fixed by an internal opening, leakage is prone to occur during grouting and pouring operations on the top.

[0004] So we proposed a precast concrete composite floor to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a precast concrete composite floor slab to solve the problem that the floor slab structure in the existing market is fixed by internal openings and is prone to leakage during grouting and pouring operations on the top.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precast concrete composite floor slab, comprising a floor slab body, fixed convex strips, top fixed steel bars, transverse fixed steel bars and friction grooves;

[0007] A friction groove is provided above the main body of the floor slab, and a top fixed steel bar is provided above the main body of the floor slab, an isolation rubber pad is installed below the main body of the floor slab, a transverse fixed steel bar is provided on the left side of the main body of the floor slab, a bolt fixing ring is provided below the transverse fixed steel bar, a fixed convex strip is provided on the left side of the main body of the floor slab, and a fixed bayonet is provided on the right side of the main body of the floor slab.

[0008] Preferably, a friction groove is provided on the upper part of the floor slab body, the friction groove is a one-centimeter circular straight groove, and the interval between the friction grooves is five centimeters, and the friction grooves horizontally penetrate the upper surface of the floor slab body;

[0009] By adopting the above technical solution, the structure can improve the adhesion of cement to the wall surface during pouring operation by evenly opening friction grooves above the main body of the floor slab, thereby improving the strength of the wall.

[0010] Preferably, a transverse fixed steel bar is fixedly connected to the center line of the floor slab body, the transverse fixed steel bar penetrates the floor slab body, and the transverse fixed steel bar exceeds the floor slab body by 40 centimeters, and the end point of the transverse fixed steel bar is a C-shaped hook structure;

[0011] By adopting the above technical solution, the structure can fix the wall panel to the supporting structure by extending the transverse fixed steel bars forty centimeters beyond the main body of the floor slab, and the end points of the transverse fixed steel bars are C-shaped hook structures, which can prevent the floor slab from falling and provide safety protection.

[0012] Preferably, bolt fixing rings are symmetrically fixed on the transverse fixing steel bars at both sides and the center line of the floor slab body, the diameter of the bolt fixing ring is twice that of the transverse fixing steel bar, and an opening with the same diameter as the transverse fixing steel bar is provided in the middle of the bolt fixing ring;

[0013] By adopting the above technical solution, the structure can provide sufficient downward pressure and enhance the fixing effect by installing a bolt fixing ring on the transverse fixed steel bar through better fit between the bolts and the weighing mechanism.

[0014] Preferably, isolation rubber pads are fixedly connected on both sides below the floor main body. The isolation rubber pads are rubber sheets with a thickness of 0.5 cm. The isolation rubber pads are square right-angled structures, and the isolation rubber pads cover both sides below the floor main body.

[0015] By adopting the above technical solution, the structure can prevent cement slurry from leaking from the gaps between the floor slabs during the pouring operation by covering the isolation rubber pads on both sides below the floor slab body.

[0016] Preferably, a top fixed steel bar is fixedly connected above the floor slab body, the diameter of the top fixed steel bar is the same as that of the transverse fixed steel bar, and an obliquely installed steel bar is fixedly connected below the top fixed steel bar, and the top fixed steel bar is fixedly connected to the transverse fixed steel bar below;

[0017] By adopting the above technical solution, the structure can facilitate the installation of fixed steel bars through the top fixed steel bars fixedly connected above the floor main body, thereby improving the efficiency of installation.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The structure can improve the adhesion of cement to the wall surface during pouring by evenly opening friction grooves above the main body of the floor slab, thereby improving the strength of the wall. The top fixed steel bars fixedly connected above the main body of the floor slab can facilitate the installation of fixed steel bars and improve the efficiency of installation.

[0020] 2. The structure can provide sufficient downward pressure and strengthen the fixing effect by installing bolt fixing rings on the transverse fixed steel bars through better fit between the bolts and the weighing mechanism. The isolation rubber pads covering both sides under the main body of the floor slab can prevent cement slurry from leaking from the gaps between the floor slabs during pouring operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a left-side stereoscopic structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model when viewed from the left side;

[0023] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0024] Figure 4 It is a left-side structural schematic diagram of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the utility model when viewed from above;

[0026] Figure 6 It is a right-side stereoscopic structural schematic diagram of the utility model.

[0027] In the figure: 1. Floor slab body; 2. Fixing convex strips; 3. Top fixing steel bars; 4. Horizontal fixing steel bars; 5. Bolt fixing ring; 6. Fixing bayonet; 7. Isolation rubber pad; 8. Friction groove. DETAILED DESCRIPTION

[0028] 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.

[0029] Please refer to Figures 1-6. The utility model provides a technical solution: a prefabricated concrete composite floor slab, including a floor slab body 1, a fixing convex strip 2, a top fixing steel bar 3, a transverse fixing steel bar 4, a bolt fixing ring 5, a fixing bayonet 6, an isolation rubber pad 7 and a friction groove 8;

[0030] A friction groove 8 is provided on the top of the floor slab body 1. The friction groove 8 is a one-centimeter circular straight groove, and the interval between the friction grooves 8 is five centimeters. The friction groove 8 runs horizontally through the upper surface of the floor slab body 1. The structure can improve the cement adhesion to the wall surface during the pouring operation through the friction grooves 8 evenly provided on the top of the floor slab body 1, thereby improving the strength of the wall. A top fixed steel bar 3 is provided on the top of the floor slab body 1. A transverse fixed steel bar 4 is fixedly connected to the center line of the floor slab body 1. The transverse fixed steel bar 4 runs through the floor slab body 1, and the transverse fixed steel bar 4 exceeds the floor slab body 1 by forty centimeters. The end points of the transverse fixed steel bar 4 are C-shaped hook-shaped structures. The structure can fix the wall panel to the supporting structure by extending the transverse fixed steel bar 4 beyond the floor slab body 1 by forty centimeters. The end points of the transverse fixed steel bar 4 are C-shaped hook-shaped structures, which can prevent the floor slab from falling and provide safety protection.

[0031] An isolation rubber pad 7 is installed under the floor slab body 1, and isolation rubber pads 7 are fixedly connected on both sides of the bottom of the floor slab body 1. The isolation rubber pad 7 is a rubber sheet with a thickness of 0.5 cm. The isolation rubber pad 7 is a square right-angled structure, and the isolation rubber pad 7 covers both sides of the bottom of the floor slab body 1. This structure can prevent cement slurry from leaking from the gap between the floor slabs during pouring operations by covering the isolation rubber pads 7 on both sides of the bottom of the floor slab body 1. A transverse fixing steel bar 4 is arranged on the left side of the floor slab body 1, and bolt fixing rings 5 ​​are symmetrically fixed on the transverse fixing steel bars 4 on both sides and the center line of the floor slab body 1. The diameter of the bolt fixing ring 5 is twice that of the transverse fixing steel bar 4, and an opening with the same diameter as the transverse fixing steel bar 4 is arranged in the middle of the bolt fixing ring 5. The structure can provide sufficient downward pressure and strengthen the fixing effect by installing a bolt fixing ring 5 on the transverse fixed steel bar 4 through better fit between the bolts and the weighing mechanism. A bolt fixing ring 5 is arranged below the transverse fixed steel bar 4, a fixing convex strip 2 is arranged on the left side of the floor slab main body 1, and a fixing bayonet 6 is opened on the right side of the floor slab main body 1. A top fixed steel bar 3 is fixedly connected above the floor slab main body 1. The diameter of the top fixed steel bar 3 is the same as that of the transverse fixed steel bar 4, and an obliquely installed steel bar is fixedly connected below the top fixed steel bar 3. The top fixed steel bar 3 is fixedly connected to the transverse fixed steel bar 4 below. The structure can facilitate the installation of fixed steel bars through the top fixed steel bar 3 fixedly connected above the floor slab main body 1, thereby improving the installation efficiency.

[0032] Working principle: When using the precast concrete composite floor, firstly, the floor is lifted to a suitable position by means of the transverse fixing steel bars 4, and then fixed to the supporting structure by means of the transverse fixing steel bars 4, and fixed by means of bolts inserted into the bolt fixing rings 5, and then the steel bars are connected and fixed to the transverse fixing steel bars 4, and the pouring operation is started, the cement will fill the friction grooves 8, and no leakage will occur under the action of the isolation rubber pads 7.

[0033] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precast concrete composite floor slab, comprising a floor slab body (1), fixed convex strips (2), top fixed steel bars (3), transverse fixed steel bars (4) and friction grooves (8), characterized in that: A friction groove (8) is provided on the top of the floor slab body (1), and a top fixing steel bar (3) is provided on the top of the floor slab body (1). An isolation rubber pad (7) is installed below the floor slab body (1). A transverse fixing steel bar (4) is provided on the left side of the floor slab body (1), and a bolt fixing ring (5) is provided below the transverse fixing steel bar (4). A fixing convex strip (2) is provided on the left side of the floor slab body (1), and a fixing bayonet (6) is provided on the right side of the floor slab body (1).

2. The precast concrete composite floor slab according to claim 1, characterized in that: A friction groove (8) is provided above the floor slab body (1). The friction groove (8) is a one-centimeter circular straight groove, and the interval between the friction grooves (8) is five centimeters. The friction groove (8) runs horizontally through the upper surface of the floor slab body (1).

3. The precast concrete composite floor slab according to claim 2, characterized in that: A transverse fixed steel bar (4) is fixedly connected to the center line of the floor slab body (1), the transverse fixed steel bar (4) passes through the floor slab body (1), and the transverse fixed steel bar (4) protrudes from the floor slab body (1) by 40 centimeters, and the end point of the transverse fixed steel bar (4) is a C-shaped hook structure.

4. The precast concrete composite floor slab according to claim 2, characterized in that: Bolt fixing rings (5) are symmetrically fixed on the transverse fixing steel bars (4) at both sides and the center line of the floor slab body (1); the diameter of the bolt fixing ring (5) is twice that of the transverse fixing steel bar (4); and an opening with the same diameter as the transverse fixing steel bar (4) is provided in the middle of the bolt fixing ring (5).

5. The precast concrete composite floor slab according to claim 1, characterized in that: Isolation rubber pads (7) are fixedly connected to the two sides below the floor slab body (1); the isolation rubber pads (7) are rubber sheets with a thickness of 0.5 cm and a square right-angle structure, and the isolation rubber pads (7) cover the two sides below the floor slab body (1).

6. The precast concrete composite floor slab according to claim 5, characterized in that: A top fixing steel bar (3) is fixedly connected above the floor slab body (1), the diameter of the top fixing steel bar (3) is the same as that of the transverse fixing steel bar (4), and a steel bar installed at an angle is fixedly connected below the top fixing steel bar (3), and the top fixing steel bar (3) is fixedly connected to the transverse fixing steel bar (4) below.

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