Anti-cracking concrete prefabricated slab

Abstract

According to the technical scheme, the anti-cracking concrete prefabricated slab is characterized in that the anti-cracking concrete prefabricated slab comprises a first filling plate assembly, a first connecting plate assembly, a first connecting assembly, a second filling plate assembly, a second connecting plate assembly, a second connecting assembly and a fixing assembly; the first connecting assembly penetrates through the first filling plate assembly, the second connecting assembly penetrates through the second filling plate assembly, the effects of connection and drainage are achieved at the same time, the production cost can be reduced, and the first filling plate assembly and the second filling plate assembly can be made of different materials according to actual requirements; and compared with a single filling plate, the anti-cracking plate has a better anti-cracking effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a prefabricated slab, more specifically, it relates to a crackproof concrete prefabricated slab. BACKGROUND

[0002] The concrete prefabricated slab is a kind of building component that is precast in factory, transported to construction site and directly installed or cast again, adopts "prefabrication+cast-in-place" hybrid structure to balance efficiency and flexibility, its core feature is to realize efficient construction through industrialization production, while quality and cost control are considered, it is common in the erection of temporary house and the like, and it does not need to be considered for a long time, so the intensity can be sacrificed to improve convenience, and light filling board is used as casting base, but this will cause cracking problem, the main reason is that light filling board will swell when being in water seepage environment for a long time, causing the concrete prefabricated slab to crack, thus a crackproof concrete prefabricated slab is needed, which can guide internal moisture away from filling board in time in the environment of external water seepage.

[0003] In combination with the above reasons, how to guide internal moisture away from filling board is the problem considered by the present application. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, a crackproof concrete prefabricated slab is provided, which can guide internal moisture away from filling board in time in the environment of external water seepage.

[0005] To achieve the above-mentioned purpose, the following technical scheme is provided: a crackproof concrete prefabricated slab, comprising a first filling board assembly, a first connecting board assembly, a first connecting assembly, a second filling board assembly, a second connecting board assembly, a second connecting assembly and a fixing assembly, the first filling board assembly is fixedly connected with the first connecting board assembly, the second filling board assembly is fixedly connected with the second connecting board assembly, the first connecting board assembly is connected with the second connecting board assembly, the first connecting board assembly and the second connecting board assembly are both connected with the fixing assembly, the fixing assembly is used to maintain the position between the first connecting board assembly and the second connecting board assembly, the first connecting assembly is connected with the first filling board assembly, the first connecting assembly penetrates through the first filling board assembly and is used to limit the movement of the first filling board assembly, the second connecting assembly is connected with the second filling board assembly, the second connecting assembly penetrates through the second filling board assembly and is used to limit the movement of the second filling board assembly.

[0006] In summary, the technical scheme has the following beneficial effects: when the filling plate is used as a pouring base, a single base is usually used, but two filling plate assemblies are used in the utility model, so that the overall performance can be improved by optimizing the force transmission path and construction synergy, a double base forms a composite stress system, load distribution is more uniform through interface shear transmission, and the mid-span deflection of the plate can be reduced, and in necessary cases, the first filling plate assembly and the second filling plate assembly use materials with different shrinkage characteristics, so that the dry shrinkage stress can be offset and the cracking risk can be reduced.

[0007] In the step of medical examination pouring, the first connecting plate assembly and the second connecting plate assembly can be filled with concrete only to form a prefabricated plate, or the first filling plate assembly, the second filling plate assembly, the first connecting plate assembly and the second connecting plate assembly can be directly connected and wrapped with concrete to speed up the subsequent pouring work.

[0008] In the final pouring construction, the plurality of first filling plate assemblies need to be connected to each other to achieve better connection effect, so the plurality of first connecting assemblies need to be connected to each other in the vertical direction, and since the first connecting assembly penetrates the first filling plate assembly, the water in the plate flows along the first connecting assembly to the bottom and is discharged from a water guide groove or the like, and the second filling plate assembly is the same, so that the purpose of guiding the internal water to leave the filling plate in the external water seepage environment can be achieved;

[0009] In the utility model, the first connecting assembly penetrates the first filling plate assembly and the second connecting assembly penetrates the second filling plate assembly to form the connection and drainage effects at the same time, which can reduce the production cost, and the first filling plate assembly and the second filling plate assembly can select different materials according to actual needs, which can have better anti-cracking effect than single filling plate. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 Schematic diagram of the three-dimensional structure of the anti-cracking concrete prefabricated plate;

[0011] Fig. 2 The utility model is a sectional view.

[0012] Reference signs: 1, first filling plate assembly; 2, first connecting plate assembly; 3, first connecting assembly; 4, second filling plate assembly; 5, second connecting plate assembly; 6, second connecting assembly; 7, fixing assembly;

[0013] 11, first filling base plate; 12, first filling abutting block; 13, first filling protruding piece; 14, first through hole;

[0014] 21, first connecting substrate; 22, first connecting resisting block; 23, first resisting protruding piece;

[0015] 31, first I-beam; 32, first gasket; 33, first bolt; 34, first nut;

[0016] 41, second filling substrate; 42, second filling resisting block; 43, second filling protruding piece; 44, second through hole;

[0017] 51, second connecting substrate; 52, second connecting resisting block; 53, second resisting protruding piece;

[0018] 61, second I-beam; 62, second gasket; 63, second bolt; 64, second nut;

[0019] 71, first resisting block; 72, second resisting block; 73, limiting shell; 74, spring. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail below in combination with the drawings and embodiments. Same parts are indicated by same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0021] Referring to Figs. 1-2 As shown in the drawings, the anti-cracking concrete prefabricated slab comprises a first filling board assembly 1, a first connecting board assembly 2, a first connecting assembly 3, a second filling board assembly 4, a second connecting board assembly 5, a second connecting assembly 6 and a fixing assembly 7. The first filling board assembly 1 is fixedly connected with the first connecting board assembly 2, the second filling board assembly 4 is fixedly connected with the second connecting board assembly 5, the first connecting board assembly 2 is connected with the second connecting board assembly 5, and the first connecting board assembly 2 and the second connecting board assembly 5 are both connected with the fixing assembly 7. The fixing assembly 7 is used for maintaining the positions of the first connecting board assembly 2 and the second connecting board assembly 5. The first connecting assembly 3 is connected with the first filling board assembly 1, penetrates through the first filling board assembly 1 and is used for limiting the movement of the first filling board assembly 1. The second connecting assembly 6 is connected with the second filling board assembly 4, penetrates through the second filling board assembly 4 and is used for limiting the movement of the second filling board assembly 4.

[0022] In the use of filling plate as the pouring base, usually a single base is adopted, but two filling plate assemblies are adopted in the utility model, so that the overall performance can be improved by optimizing the structure force transmission path and construction synergy, the double base forms a composite stress system, the load distribution is more uniform through the interface shear force transmission, and the plate mid-span deflection can be reduced, in the necessary case, the first filling plate assembly 1 and the second filling plate assembly 4 adopt materials with different shrinkage characteristics, so that the dry shrinkage stress can be offset, and the cracking risk is reduced.

[0023] In the aspect of medical examination pouring, the first connecting plate assembly 2 and the second connecting plate assembly 5 can be filled with concrete only, so as to form a prefabricated plate, or the first filling plate assembly 1, the second filling plate assembly 4, the first connecting plate assembly 2 and the second connecting plate assembly 5 can be directly connected and wrapped with concrete, so as to speed up the subsequent pouring engineering.

[0024] In the last pouring construction, the plurality of first filling plate assemblies 1 need to be connected with each other to achieve better connection effect, so the plurality of first connecting assemblies 3 need to be connected with each other in the vertical direction, and since the first connecting assembly 3 penetrates the first filling plate assembly 1, the moisture in the plate flows along the first connecting assembly 3 to the bottom and is discharged from a water guide groove or the like, and the second filling plate assembly 4 is the same, so that the purpose of guiding the internal moisture to leave the filling plate in the external water seepage environment can be achieved;

[0025] In the utility model, the first connecting assembly 3 penetrates the first filling plate assembly 1 and the second connecting assembly 6 penetrates the second filling plate assembly 4, so that the connection and drainage effects are formed at the same time, the production cost can be reduced, and the first filling plate assembly 1 and the second filling plate assembly 4 can select different materials according to actual needs, so that the first filling plate assembly 1 and the second filling plate assembly 4 can have better anti-cracking effect compared with a single filling plate.

[0026] Further, the first connecting plate assembly 2 comprises a first connecting base plate 21, a first connecting abutting block 22 and a plurality of first abutting protruding pieces 23, the first connecting abutting block 22 and the plurality of first abutting protruding pieces 23 are fixedly connected to the same side of the first connecting base plate 21, and the plurality of first abutting protruding pieces 23 are distributed in a horizontal array.

[0027] Further, the second connecting plate assembly 5 comprises a second connecting base plate 51, a second connecting abutting block 52 and a plurality of second abutting protruding pieces 53, the second connecting abutting block 52 and the plurality of second abutting protruding pieces 53 are fixedly connected to the same side of the second connecting base plate 51 and are arranged towards the first connecting abutting block 22 and the plurality of first abutting protruding pieces 23, the plurality of second abutting protruding pieces 53 are distributed in a transverse array, the first connecting abutting block 22 abuts against the second abutting protruding piece 53, and the second connecting abutting block 52 abuts against the first abutting protruding piece 23.

[0028] When the first connecting abutting block 22 abuts against the second abutting protruding piece 53 and the second connecting abutting block 52 abuts against the first abutting protruding piece 23, the first abutting protruding piece 23 is separated from the second abutting protruding piece 53.

[0029] In the pre-pouring construction, in order to strengthen the forming strength, the contact area of the plate and the concrete can be increased, so a plurality of first abutting protruding pieces 23 and a plurality of second abutting protruding pieces 53 are arranged, so that the contact area with the concrete in the fixed space can be increased, and in order to prevent the first abutting protruding piece 23 and the second abutting protruding piece 53 from abutting to reduce the actual contact area of the concrete, the first abutting protruding piece 23 and the second abutting protruding piece 53 are further arranged as a safety measure.

[0030] Further, the first filling plate assembly 1 comprises a first filling base plate 11, a first filling abutting block 12 and a plurality of first filling protruding pieces 13, the first filling base plate 11 is fixedly connected with the first connecting base plate 21, the first filling base plate 11 is integrally formed with the first filling abutting block 12, and is provided with a first through hole 14 for the first connecting assembly 3 to pass through, the plurality of first filling protruding pieces 13 are fixedly connected to the same side of the first filling base plate 11, and the plurality of first filling protruding pieces 13 are distributed in a transverse array.

[0031] Further, the second filling plate assembly 4 comprises a second filling base plate 41, a second filling abutting block 42 and a plurality of second filling protruding pieces 43, the second filling base plate 41 is fixedly connected with the second connecting base plate 51, the second filling base plate 41 is integrally formed with the second filling abutting block 42, and is provided with a second through hole 44 for the second connecting assembly 6 to pass through, the plurality of second filling protruding pieces 43 are fixedly connected to the same side of the second filling base plate 41, and the plurality of second filling protruding pieces 43 are distributed in a transverse array.

[0032] In view of actual production, the first filling substrate 11 and the first connecting substrate 21 are produced separately, which can effectively improve the production efficiency of the prefabricated plate, and the first filling substrate 11 or the first connecting substrate 21 can be used as a reference for primary pouring and secondary pouring, the function of the first filling protruding piece 13 is the same as that of the first resisting protruding piece 23, the thickness of the first filling resisting block 12 can be changed according to actual needs, and the first filling resisting block 12 is used for assisting in judging the pouring thickness during secondary pouring, the first connecting assembly 3 is arranged in the vertically arranged first through hole 14, due to the fact that the two first filling substrates 11 or the first filling resisting blocks 12 cannot be spliced without gaps in actual production, and the flowability of the concrete is poor during pouring, so the gaps cannot be effectively filled, and the gaps will become water storage spaces, and the first through hole 14 is arranged in the utility model, and the first through hole 14 needs to be connected, so that the first through hole 14 can better play a drainage effect, and the setting structure principle of the second filling plate assembly 4 is the same as that of the first filling plate assembly 1.

[0033] Further, the first connecting assembly 3 comprises a first I-shaped steel 31, a first gasket 32, a first bolt 33 and a first nut 34, both ends of the first I-shaped steel 31 abut against the inner wall of the first through hole 14, both ends of the first bolt 33 abut against the inner wall of the first through hole 14, the number of the first I-shaped steel 31 and the first gasket 32 is at least two, a plurality of first gaskets 32 are arranged on both sides of the waist of the first I-shaped steel 31, both ends of the first gasket 32 abut against the waist of the first I-shaped steel 31, the middle of the first gasket 32 is separated from the waist of the first I-shaped steel 31, and a plurality of first I-shaped steels 31 are connected with the first I-shaped steel 31 through the first gasket 32, the first bolt 33 and the first nut 34.

[0034] Further, the second connecting assembly 6 comprises a second I-shaped steel 61, a second gasket 62, a second bolt 63 and a second nut 64, both ends of the second I-shaped steel 61 abut against the inner wall of the second through hole 44, both ends of the second bolt 63 abut against the inner wall of the second through hole 44, the number of the second I-shaped steel 61 and the second gasket 62 is at least two, a plurality of second gaskets 62 are arranged on both sides of the waist of the second I-shaped steel 61, both ends of the second gasket 62 abut against the waist of the second I-shaped steel 61, the middle of the second gasket 62 is separated from the waist of the second I-shaped steel 61, and a plurality of second I-shaped steels 61 are connected with the second I-shaped steel 61 through the second gasket 62, the second bolt 63 and the second nut 64.

[0035] For the purpose of reducing cost, the main medium of connection can use common I-beam, the first I-beam 31 and the first bolt 33 respectively abut four faces of the first through hole 14, so as to fix the relative position of the first I-beam 31, the first gasket 32 is used to act as a buffer, and the two ends of the first gasket 32 abut the waist of the first I-beam 31, the middle of the first gasket 32 is separated from the waist of the first I-beam 31, so that on the one hand, the installation of the first bolt 33 and the first nut 34 is facilitated, and on the other hand, enough space is also left for water to pass through, so as to play a drainage effect, the structure and principle of the second connecting assembly 6 are the same as those of the first connecting assembly 3.

[0036] Further, the fixing assembly 7 comprises a first abutting block 71, a second abutting block 72, a limiting shell 73 and a spring 74, the first abutting block 71 abuts the first connecting base plate 21, the second abutting block 72 abuts the second connecting base plate 51, the two ends of the limiting shell 73 are respectively detachably connected with the first abutting block 71 and the second abutting block 72, the two ends of the spring 74 are respectively detachably connected with the first abutting block 71 and the second abutting block 72, and the spring 74 is contained in the limiting shell 73.

[0037] The spring 74 can be pulled tight by the abutting cooperation of the first abutting block 71 and the second abutting block 72, so as to prevent the first connecting base plate 21 and the second connecting base plate 51 from being separated during the solidification of concrete, and the limiting shell 73 can be selected in length according to actual needs, so as to control the minimum distance between the first connecting base plate 21 and the second connecting base plate 51.

[0038] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.

Claims

1. A crack-resistant precast concrete slab, characterized in that, The device includes a first filling plate assembly, a first connecting plate assembly, a first connecting component, a second filling plate assembly, a second connecting plate assembly, a second connecting component, and a fixing component. The first filling plate assembly is fixedly connected to the first connecting plate assembly, and the second filling plate assembly is fixedly connected to the second connecting plate assembly. The first connecting plate assembly is connected to the second connecting plate assembly, and both the first and second connecting plate assemblies are connected to the fixing component. The fixing component is used to maintain the position between the first and second connecting plate assemblies. The first connecting component is connected to the first filling plate assembly, penetrates the first filling plate assembly, and is used to restrict the movement of the first filling plate assembly. The second connecting component is connected to the second filling plate assembly, penetrates the second filling plate assembly, and is used to restrict the movement of the second filling plate assembly.

2. The crack-resistant precast concrete slab according to claim 1, characterized in that, The first connecting plate assembly includes a first connecting base plate, a first connecting abutment block, and a plurality of first abutment protrusions. The first connecting abutment block and the plurality of first abutment protrusions are all fixedly connected to the same side of the first connecting base plate, and the plurality of first abutment protrusions are arranged in a horizontal array.

3. The crack-resistant precast concrete slab according to claim 2, characterized in that, The second connecting plate assembly includes a second connecting base plate, a second connecting abutment block, and a plurality of second abutment protrusions. The second connecting abutment block and the plurality of second abutment protrusions are all fixedly connected to the same side of the second connecting base plate and are all oriented toward the first connecting abutment block and the plurality of first abutment protrusions. The plurality of second abutment protrusions are arranged in a horizontal array. The first connecting abutment block abuts against the second abutment protrusions, and the second connecting abutment block abuts against the first abutment protrusions. When the first connecting contact block abuts against the second contact protrusion, and the second connecting contact block abuts against the first contact protrusion, the first contact protrusion and the second contact protrusion separate.

4. The crack-resistant precast concrete slab according to claim 3, characterized in that, The first filling plate assembly includes a first filling substrate, a first filling contact block, and a plurality of first filling protrusions. The first filling substrate is fixedly connected to a first connecting substrate. The first filling substrate and the first filling contact block are integrally formed and have a first through hole for the first connecting assembly to pass through. The plurality of first filling protrusions are all fixedly connected to the same side of the first filling substrate and are arranged in a horizontal array.

5. The crack-resistant precast concrete slab according to claim 4, characterized in that, The second filling plate assembly includes a second filling substrate, a second filling contact block, and a plurality of second filling protrusions. The second filling substrate is fixedly connected to the second connecting substrate. The second filling substrate and the second filling contact block are integrally formed and have a second through hole for the second connecting assembly to pass through. The plurality of second filling protrusions are all fixedly connected to the same side of the second filling substrate and are arranged in a horizontal array.

6. The crack-resistant precast concrete slab according to claim 5, characterized in that, The first connecting assembly includes a first I-beam, a first washer, a first bolt, and a first nut. The two ends of the first I-beam abut against the inner wall of the first through hole, and the two ends of the first bolt abut against the inner wall of the first through hole. There are at least two of each of the first I-beam and the first washer. Multiple first washers are respectively disposed on the two sides of the waist of the first I-beam. The two ends of the first washer abut against the waist of the first I-beam, and the middle of the first washer is separated from the waist of the first I-beam. Multiple first I-beams are connected to the first I-beam through the first washer, the first bolt, and the first nut.

7. The crack-resistant precast concrete slab according to claim 5, characterized in that, The second connecting assembly includes a second I-beam, a second washer, a second bolt, and a second nut. The two ends of the second I-beam abut against the inner wall of the second through hole, and the two ends of the second bolt abut against the inner wall of the second through hole. There are at least two of each of the second I-beam and the second washer. Multiple second washeres are respectively disposed on the two sides of the waist of the second I-beam. The two ends of the second washer abut against the waist of the second I-beam, and the middle of the second washer is separated from the waist of the second I-beam. Multiple second I-beams are connected to the second I-beam through the second washer, the second bolt, and the second nut.

8. The crack-resistant precast concrete slab according to claim 5, characterized in that, The fixing component includes a first abutting block, a second abutting block, a limiting shell, and a spring. The first abutting block abuts against a first connecting base plate, and the second abutting block abuts against a second connecting base plate. The two ends of the limiting shell are detachably connected to the first abutting block and the second abutting block, respectively. The two ends of the spring are detachably connected to the first abutting block and the second abutting block, respectively, and are accommodated within the limiting shell.

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