A prefabricated composite slab cast-in-place slab with anti-grout leakage device

Abstract

This utility model provides a prefabricated composite slab cast-in-place slab strip anti-leakage device. An upward-facing tongue and groove strip is designed on the slab strip template at the junction of two composite slabs and the cast-in-place slab strip. Furthermore, corresponding grooved tongue and groove joints are provided along the edges of the composite slabs. During the casting of the cast-in-place slab strip, the grooved tongue and groove tightly fit onto the tongue and groove strip. The upward-facing tongue and groove strip effectively prevents grout leakage caused by loose joints at the slab strip template joints. This prefabricated composite slab cast-in-place slab strip anti-leakage device effectively prevents grout leakage, has a simple structure, and is convenient and quick to construct, effectively improving construction efficiency and saving labor. It has strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of composite slab construction technology, and in particular to a prefabricated composite slab cast-in-place slab with a grout leakage prevention device. Background Technology

[0002] Currently, prefabricated composite slabs are increasingly widely used in engineering projects. However, in actual projects, grout leakage is prone to occur in the composite slab strips due to loose joints in the formwork, thus affecting the one-time molding quality of the composite slab strips. In the past, a common construction technique was to use T-bolts and hanger reinforcements to tie the formwork strips to the supporting steel pipes, thereby improving the fit between the formwork strips and the composite slab and reducing gaps between them. However, this technique is cumbersome, requiring strict control over the erection of steel pipe supports and the fixing torque of the T-bolts, and small-scale grout leakage still occurs after molding. Therefore, further improvements are needed to the formwork installation structure for cast-in-place composite slab strips. Utility Model Content

[0003] In view of this, the present invention provides a prefabricated composite slab cast-in-place slab with anti-grout leakage device, which addresses the problems of the existing technology by designing a tongue and groove joint with a tongue and groove strip to solve the existing technical problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A prefabricated composite slab cast-in-place strip anti-leakage device includes a strip template, which is set at the bottom of the cast-in-place strip between two composite slabs. Two tongue and groove strips are provided on the top surface of the strip template at the junction of the cast-in-place strip and the two composite slabs. The tongue and groove strips are set along the length of the junction and are the same length as the junction. The tongue and groove direction of the tongue and groove strips faces the cast-in-place strip.

[0006] Furthermore, the tongue and groove strip is located on the outside of the laminated plate, and the sidewall of the tongue and groove strip is attached to the sidewall of the laminated plate.

[0007] Furthermore, it also includes a grooved tongue and groove joint, which is set on the lower side of the edge of the composite slab and located at the junction of the composite slab and the cast-in-place slab strip. The grooved tongue and groove joint can be tightly spliced ​​with the tongue and groove strip.

[0008] Furthermore, it also includes support rods, which are evenly spaced on the bottom surface of the strip template and support the top surface of the strip template to adhere to the bottom of the two composite slab cast-in-place strips; the support rods can hold the strip template to adhere to the bottom of the two composite slab cast-in-place strips, so that the groove tongue and groove are tightly spliced ​​on the tongue and groove strip to facilitate the filling of cast-in-place grout into the cast-in-place strip.

[0009] Furthermore, the cross-sectional shape of the tongue and groove strip is triangular, trapezoidal, rectangular, or semi-circular.

[0010] Furthermore, the tongue and groove strip is fixed to the top surface of the strip template by rivets or screws or is integrally formed with the strip template.

[0011] Furthermore, the tongue and groove strip is made of plastic or metal.

[0012] Furthermore, the support rod is provided with a crossbar section and a strut section. The strut section is provided with a first support section and a second support section fixed to the lower side of the crossbar section. The crossbar section is attached to the bottom surface of the plate strip template to support the plate strip template. The top of the first support section and the second support section of the strut section correspond to the bottom positions of the two tongue and groove strips, respectively.

[0013] Furthermore, two protrusions are provided on the upper side of the crossbar corresponding to the positions of the first support and the second support, and two positioning grooves are provided on the bottom side of the strip template corresponding to the bottom position of the tongue and groove strip, corresponding to the two protrusions on the upper side of the crossbar.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention designs upward-facing tongue-and-groove strips on the formwork at the junction of two composite slabs and the cast-in-place slab strip. Corresponding grooves are provided along the edges of the composite slabs. During the casting of the slab strip, the grooves fit tightly onto the tongue-and-groove strips. The upward-facing tongue-and-groove strips effectively prevent grout leakage caused by loose joints at the slab strip formwork joints. Simultaneously, dedicated support rods can be designed, with the first and second support parts of the support rod correspondingly supporting the two tongue-and-groove strips, ensuring a tighter fit between the tongue-and-groove strips and the grooves, further preventing grout leakage. This prefabricated composite slab cast-in-place slab strip anti-leakage device effectively prevents grout leakage, has a simple structure, and is convenient and quick to construct, effectively improving construction efficiency and saving labor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the prefabricated composite slab cast-in-place slab with anti-grout leakage device in this utility model;

[0017] Figure 2 This is another structural schematic diagram of the prefabricated composite slab cast-in-place slab with anti-grout leakage device in this utility model;

[0018] Figure 3 This is a cross-sectional diagram showing the prefabricated composite slab cast-in-place slab with anti-grout leakage device in this utility model.

[0019] The annotations in the attached figures are explained as follows:

[0020] 10 is the strip template, 11 is the tongue and groove strip, 12 is the groove, 20 is the laminated plate, and 21 is the tongue and groove joint.

[0021] 30 is the cast-in-place slab strip, 31 is the junction, 40 is the support rod, 41 is the crossbar, 411 is the protrusion, 42 is the strut, 421 is the first support part, and 422 is the second support part. Detailed Implementation

[0022] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0023] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0024] To prevent grout leakage from the formwork strip, simplify the structure, and facilitate operation, the specific details of this utility model are as follows.

[0025] Combination Figures 1-3 As shown, an embodiment of this utility model is a prefabricated composite slab cast-in-place slab strip anti-leakage device, including a slab strip template 10, tongue and groove strips 11, grooved tongue and groove 21, and support rods 40. The slab strip template 10 is set at the bottom of the cast-in-place slab strip 30 between two composite slabs 20. Two tongue and groove strips 11 are provided on the top surface of the slab strip template 10 along the junction 31 between the cast-in-place slab strip 30 and the two composite slabs 20. The tongue and groove strips 11 are set along the length direction of the junction 31 and are the same length as the junction 31. The tongue and groove direction of the tongue and groove strips 11 faces the cast-in-place slab strip 30. The tongue and groove strips 11 protrude upwards, which can better prevent the flow and leakage of cast-in-place grout.

[0026] In some embodiments, the tongue and groove strip 11 is located on the outer side of the composite slab 20 and is fitted against the outer wall of the composite slab 20. In other words, the sidewall of the tongue and groove strip 11 is fitted against the sidewall of the composite slab 20. In this way, the tongue and groove strip 11 can seal the outer edge of the junction between the composite slab 20 and the strip formwork 10, preventing concrete grout from leaking from the joint between the composite slab 20 and the strip formwork 10 during grouting.

[0027] In this embodiment, the tongue and groove strip 11 is located at the junction of the template 10 and the composite slab 20, inside the junction and corresponding to the edge of the composite slab 20. The tongue and groove strip 11 is located at the junction 31 of the composite slab 20 and the cast-in-place slab strip 30. The edge of the composite slab 20 is provided with a groove tongue and groove 21, which can be tightly fitted with the tongue and groove strip 11.

[0028] Multiple support rods 40 are evenly spaced on the bottom surface of the plate strip template 10, supporting the top surface of the plate strip template 10 to adhere to the bottom of the two composite plates 20 and the cast-in-place plate strip 30. In use, the support rods 40 press against the plate strip template 10 to adhere to the bottom of the two composite plates 20 and the cast-in-place plate strip 30, the groove tongue and groove 21 are tightly spliced ​​on the tongue and groove strip 11, and then the cast-in-place plate strip 30 is filled with cast-in-place grout.

[0029] In some embodiments, the tongue and groove strip 11 has a triangular, trapezoidal, rectangular or semi-circular cross-sectional shape, mainly some upward convex structures, which can effectively block the flow of cast-in-place grout, and preferably has a shape that can be easily assembled with the groove tongue and groove 21.

[0030] In some embodiments, the tongue and groove strip 11 is fixed to the top surface of the strip template 10 by rivets or screws or is integrally formed with the strip template 10. The appropriate fixing method can be selected according to the processing efficiency and cost.

[0031] In some embodiments, the tongue and groove strip 11 is made of plastic or metal and needs to be made of a material with a certain degree of hardness in order to fit well with the groove tongue and groove 21.

[0032] The main feature of this invention is that an upward-facing tongue and groove strip 11 is designed on the formwork 10 of the strip at the junction 31 of the two composite slabs 20 and the cast-in-place strip 30. Furthermore, corresponding grooved tongue and groove joints 21 are provided along the edges of the composite slabs 20. During the casting of the cast-in-place strip 30, the grooved tongue and groove joints 21 are tightly fitted onto the tongue and groove strip 11. The upward-facing tongue and groove strip 11 effectively prevents grout leakage from the composite slabs 20 due to loose joints at the joints of the strip formwork 10. In addition, the tongue and groove strip 11 also provides positioning for the composite slabs 20 during installation, facilitating installation operations.

[0033] Furthermore, in some embodiments, combined with Figure 1 and Figure 2As shown, in order to better ensure that the tongue and groove strip 11 and the groove tongue and groove 21 are tightly joined to prevent grout leakage, the support rod 40 is provided with a horizontal bar part 41 and a strut part 42. The strut part 42 is provided with a first support part 421 and a second support part 422 fixed on the lower side of the horizontal bar part 41. The horizontal bar part 41 is attached to the bottom surface of the plate strip template 10 to support the plate strip template 10. The top of the first support part 421 and the second support part 422 of the strut part 42 correspond to the bottom positions of the two tongue and groove strips 11 respectively. The first support part 421 and the second support part 422 of the strut part 42 support the two tongue and groove strips 11 respectively, which can make the tongue and groove strip 11 and the groove tongue and groove 21 fit more tightly and further prevent the problem of grout leakage.

[0034] Furthermore, in some embodiments, combined with Figure 1 and Figure 2 As shown, in order to facilitate the alignment of the support rod 40 with the strip template 10, two protrusions 411 are provided on the upper side of the crossbar 41 corresponding to the positions of the first support 421 and the second support 422. The bottom surface of the strip template 10 is provided with two positioning grooves 12 corresponding to the two protrusions 411 on the upper side of the crossbar 41 at the bottom position of the tongue and groove strip 11. When installing the support rod 40, the two protrusions 411 are inserted into the two positioning grooves 12, which can directly realize the alignment of the support rod 40 with the strip template 10, which is convenient for installation.

[0035] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A prefabricated composite slab with a grout leakage prevention device, characterized in that, It includes: A strip template (10) is set at the bottom of the cast-in-place strip (30) between two composite slabs (20). Two tongue and groove strips (11) are provided on the top surface of the strip template (10) at the junction (31) between the cast-in-place strip (30) and the two composite slabs (20). The tongue and groove strips (11) are set along the length of the junction (31) and are the same length as the junction (31). The tongue and groove direction of the tongue and groove strips (11) faces the cast-in-place strip (30).

2. The prefabricated composite slab cast-in-place slab with anti-grout leakage device as described in claim 1, characterized in that, The tongue and groove strip (11) is located on the outside of the composite plate (20), and the sidewall of the tongue and groove strip (11) is attached to the sidewall of the composite plate (20).

3. The prefabricated composite slab cast-in-place slab with anti-grout leakage device as described in claim 1, characterized in that, It also includes: a groove tongue and groove (21), which is set on the lower side of the edge of the composite plate (20) and located at the junction (31) of the composite plate (20) and the cast-in-place slab strip (30). The groove tongue and groove (21) can be tightly spliced ​​with the tongue and groove strip (11).

4. The prefabricated composite slab cast-in-place slab with anti-grout leakage device as described in claim 3, characterized in that, It also includes: Support rods (40) are evenly spaced on the bottom surface of the strip template (10), supporting the top surface of the strip template (10) to adhere to the bottom of the two composite slabs (20) cast-in-place strips (30); the support rods (40) can hold the strip template (10) to adhere to the bottom of the two composite slabs (20) cast-in-place strips (30), so that the groove tongue and groove (21) are tightly spliced ​​on the tongue and groove strip (11) to facilitate the filling of cast-in-place grout in the cast-in-place strip (30).

5. The prefabricated composite slab cast-in-place slab with anti-grout leakage device according to claim 4, characterized in that: The cross-sectional shape of the tongue and groove strip (11) is triangular, trapezoidal, rectangular or semi-circular.

6. The prefabricated composite slab cast-in-place slab with anti-grout leakage device according to claim 4, characterized in that: The tongue and groove strip (11) is fixed to the top surface of the strip template (10) by rivets or screws or is integrally formed with the strip template (10).

7. The prefabricated composite slab cast-in-place slab with anti-grout leakage device according to claim 1, characterized in that: The tongue and groove strip (11) is made of plastic or metal.

8. The prefabricated composite slab cast-in-place slab with anti-grout leakage device according to claim 4, characterized in that: The support rod (40) is provided with a crossbar part (41) and a strut part (42). The strut part (42) is provided with a first support part (421) and a second support part (422) fixed on the lower side of the crossbar part (41). The crossbar part (41) is attached to the bottom surface of the plate strip template (10) to support the plate strip template (10). The top of the first support part (421) and the second support part (422) of the strut part (42) correspond to the bottom positions of the two tongue and groove strips (11).

9. The prefabricated composite slab cast-in-place slab with anti-grout leakage device according to claim 8, characterized in that: The upper side of the crossbar (41) is provided with two protrusions (411) corresponding to the positions of the first support (421) and the second support (422). The bottom surface of the plate strip template (10) is provided with two positioning grooves (12) corresponding to the two protrusions (411) on the upper side of the crossbar (41).

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