Prefabricated laminated slab abutted seam mortar leakage prevention device

Abstract

The utility model discloses a prefabricated laminated slab abutted seam grout leakage prevention device which comprises two prefabricated laminated slabs which are spliced, a pouring groove is formed in the opposite sides of the two prefabricated laminated slabs, formworks are arranged on the bottom faces of the two prefabricated laminated slabs and located below the pouring groove, and rubber strips are arranged between the prefabricated laminated slabs and the formworks. A plurality of threaded cylinders are embedded in the bottom face of the side, close to the pouring groove, of the prefabricated laminated slab, the formwork abuts against the bottom face of the prefabricated laminated slab through positioning bolts, and the positioning bolts are in threaded connection with the threaded cylinders. The device has the beneficial effects that the threaded cylinder is pre-embedded on the prefabricated laminated slab, then the template and the prefabricated laminated slab are tightly attached and fixed by using the positioning bolt, and the rubber strip is arranged between the template and the prefabricated laminated slab, so that the problem of slurry leakage caused by movement of the template due to infirm installation is solved; and in addition, the template is convenient to disassemble in the later period, and the situation that too long positioning bolts need to be cut in the later period of directly embedding the bolts is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a device for preventing slurry leakage at the joints of precast composite slabs. Background Technique

[0002] A composite floor slab is an assembled monolithic floor slab formed by laminating precast composite slabs and cast-in-place reinforced concrete layers. Among them, the precast composite slab is not only one of the components of the floor slab structure but also a permanent formwork for the cast-in-place reinforced concrete composite layer. In order to meet the integral structural requirements of the assembled composite floor slab, a cast-in-place concrete slab strip is reserved between the composite floor slabs. After the installation of the precast composite slabs is completed, supports are provided at the bottom of the cast-in-place slab strip, and formwork is installed and sealed.

[0003] However, during the construction process, since the formwork is easily installed unevenly and is not firmly fixed after installation and is prone to movement, slurry leakage is likely to occur during the concrete pouring at the joints of the precast composite slabs. As a result, the formed quality and appearance of the concrete at the joints of the composite slabs are poor, and even cracking phenomena occur. Summary of the Utility Model

[0004] In order to overcome the problem of easy slurry leakage during the concrete pouring at the joints of the precast composite slabs, the utility model provides a device for preventing slurry leakage at the joints of precast composite slabs. The technical solution is as follows:

[0005] A device for preventing slurry leakage at the joints of precast composite slabs includes two precast composite slabs to be spliced. Pouring grooves are formed on the opposite sides of the two precast composite slabs. Formwork is arranged on the bottom surfaces of the two precast composite slabs below the pouring grooves. Rubber strips are arranged between the precast composite slabs and the formwork. A plurality of threaded barrels are embedded in the bottom surface of the precast composite slab close to one side of the pouring groove. The formwork is in abutment with the bottom surface of the precast composite slab through positioning bolts, and the positioning bolts are in threaded connection with the threaded barrels. By embedding threaded barrels in the precast composite slabs, the formwork can be quickly installed using positioning bolts, and the formwork can be fixed more firmly to avoid slurry leakage. In addition, the formwork can be quickly disassembled after the concrete is poured and formed, improving the construction efficiency. At the same time, using threaded barrels to install and disassemble the formwork can avoid the cumbersome operation process of directly embedding bolts and then cutting the bolts later.

[0006] Further, fixing parts capable of being clamped at both ends of the precast composite slabs are arranged at both ends of the formwork.

[0007] Furthermore, the fixing member includes a T-shaped clamping plate with both ends respectively clamped at the corners of the two precast laminated plates and fixing bolts connecting the T-shaped clamping plate and the formwork. The two inner sides of the T-shaped clamping plate are respectively in close contact with the top surface and the end surface of the precast laminated plate. By clamping the T-shaped clamping plate at both ends of the precast laminated plate, the installation of both ends of the formwork is made more stable, avoiding the problem of slurry leakage caused by vibration at both ends of the formwork during pouring.

[0008] Furthermore, a plurality of through grooves are respectively formed in the edge portions at both ends of the formwork along the length direction. The lower end of the fixing bolt is located in the through groove. The upper end of the fixing bolt penetrates through the horizontal plate of the T-shaped clamping plate and is close to the vertical plate of the T-shaped clamping plate.

[0009] Furthermore, a plurality of the through grooves are also formed in the edge portions on both sides of the formwork along the width direction. The positioning bolt is located in the through groove.

[0010] Furthermore, circular washer plates are sleeved on both the positioning bolt and the fixing bolt, and the circular washer plates abut against the bottom surface of the formwork.

[0011] The beneficial effects of the technical solution provided by the present utility model are as follows: By pre-embedding threaded cylinders in the precast laminated plates and then using positioning bolts to closely attach and fix the formwork to the precast laminated plates, and by providing rubber strips between the formwork and the precast laminated plates, not only the problem of slurry leakage caused by the unstable installation and movement of the formwork is avoided, but also the subsequent disassembly of the formwork is facilitated, and the need to cut the overly long positioning bolts directly embedded later is avoided.

[0012] The present device also further limits and fixes both ends of the formwork to the precast laminated plates by providing fixing members, avoiding the problems of formwork movement or vibration at both ends of the formwork caused by vibration during the concrete pouring process, resulting in slurry leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the following listed drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

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

[0015] Figure 2 is the structural exploded schematic diagram of the embodiment of the present utility model;

[0016] Figure 3 is Figure 2 the enlarged schematic diagram of the structure at A in ;

[0017] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. Prefabricated composite slab; 2. Formwork; 3. Threaded cylinder; 4. Positioning bolt; 5. Fixing member; 501. T-shaped clamping plate; 502. Fixing bolt; 6. Through groove; 7. Rubber strip; 8. Ring-shaped backing plate. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the implementation manners of the present utility model in conjunction with the attached drawings.

[0019] See Figures 1 to 3 , an anti-leakage grout device for the joint of prefabricated composite slabs provided by an embodiment of the present utility model includes two prefabricated composite slabs 1 to be spliced. Pouring grooves are formed on the opposite sides of the two prefabricated composite slabs 1. Formwork 2 is arranged below the pouring grooves on the bottom surfaces of the two prefabricated composite slabs 1. A rubber strip 7 is arranged between the prefabricated composite slab 1 and the formwork 2; a plurality of threaded cylinders 3 are embedded on the bottom surface of the prefabricated composite slab 1 near one side of the pouring groove. The formwork 2 is in contact with the bottom surface of the prefabricated composite slab 1 through a positioning bolt 4, and the positioning bolt 4 is in threaded connection with the threaded cylinder 3.

[0020] Fixing members 5 capable of being clamped at both ends of the prefabricated composite slab 1 are arranged at both ends of the formwork 2.

[0021] The fixing member 5 includes a T-shaped clamping plate 501 whose two ends are respectively clamped at the corners of the two prefabricated composite slabs 1 and a fixing bolt 502 connecting the T-shaped clamping plate 501 and the formwork 2. The two inner side surfaces of the T-shaped clamping plate 501 are respectively in close contact with the top surface and the end surface of the prefabricated composite slab 1.

[0022] A plurality of through grooves 6 are respectively formed along the length direction at the edges of both ends of the formwork 2. The lower end of the fixing bolt 502 is located in the through groove 6. The upper end of the fixing bolt 502 penetrates through the horizontal plate of the T-shaped clamping plate 501, and the fixing bolt 502 is close to the vertical plate of the T-shaped clamping plate 501.

[0023] A plurality of through grooves 6 are also formed along the width direction at the edges of both sides of the formwork 2. The positioning bolt 4 is located in the through groove 6.

[0024] Ring-shaped backing plates 8 are sleeved on both the positioning bolt 4 and the fixing bolt 502, and the ring-shaped backing plates 8 are abutted against the bottom surface of the formwork 2.

[0025] Usage method: When using this device, place the template 2 under the two precast laminated plates 1 to be spliced. Adjust the position of the template 2 so that the through groove 6 corresponds to the threaded barrel 3, and initially fix the template 2 under the precast laminated plate 1 by connecting it with the positioning bolt 4 to the threaded barrel. Then fix the rubber strip 7 between the precast laminated plate 1 and the template 2, and close to the inner side of the precast laminated plate 1. Then tighten the positioning bolt 4 to completely fix the template 2. Install the fixing parts 5 at both ends of the template 2 respectively, and insert the fixing bolt 502 into the through groove 6. Press the T-shaped clamping plate 501 tightly against the top surface and side surface at both ends of the precast laminated plate 1, and then fix both ends of the template 2 by using the fixing bolt 502. After the concrete is poured and formed, quickly disassemble the template 2 by removing the positioning bolt 4 and the fixing parts 5, which improves the construction efficiency.

[0026] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A precast composite slab joint anti-leakage slurry device, characterized in that, It comprises two prefabricated composite panels (1) to be spliced, wherein opposite sides of the two prefabricated composite panels (1) form a casting trough, the bottom surfaces of the two prefabricated composite panels (1) are provided with a template (2) below the casting trough, and a rubber strip (7) is provided between the prefabricated composite panels (1) and the template (2); A plurality of threaded barrels (3) are pre-buried on the bottom surface of the prefabricated composite plate (1) close to the casting trough, and the template (2) is in contact with the bottom surface of the prefabricated composite plate (1) via positioning bolts (4), and the positioning bolts (4) are threadedly connected to the threaded barrels (3).

2. The precast composite slab joint leakage prevention and slurry leakage prevention device according to claim 1, characterized in that, Both ends of the template (2) are provided with fixing members (5) capable of being clamped on both ends of the prefabricated composite board (1).

3. The precast composite slab joint leakage prevention and slurry leakage prevention device according to claim 2, characterized in that, The fixing member (5) comprises a T-shaped clamping plate (501) whose two ends are respectively clamped on the corners of the two prefabricated composite panels (1) and a fixing bolt (502) connecting the T-shaped clamping plate (501) and the template (2); the two inner side surfaces of the T-shaped clamping plate (501) are respectively in close contact with the top surface and end surface of the prefabricated composite panel (1).

4. The precast composite slab joint anti-leakage slurry device according to claim 3, characterized in that, The edges of both ends of the template (2) are provided with a plurality of through slots (6) along the length direction, the lower end of the fixing bolt (502) is located in the through slot (6), the upper end of the fixing bolt (502) passes through the horizontal plate of the T-shaped clamping plate (501), and the fixing bolt (502) is close to the vertical plate of the T-shaped clamping plate (501).

5. The precast composite slab joint leakage prevention and slurry leakage prevention device according to claim 4, characterized in that, A plurality of through slots (6) are also provided on both side edges of the template (2) along the width direction, and the positioning bolts (4) are located in the through slots (6).

6. The precast composite slab joint anti-leakage slurry device according to any one of claims 3-5, characterized in that, The positioning bolt (4) and the fixing bolt (502) are both sleeved with an annular pad (8), and the annular pad (8) rests against the bottom surface of the template (2).

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