Novel DCKQ cavity component for house building engineering

Abstract

The invention relates to the technical field of assembly type floor slabs, in particular to a novel DCKQ cavity component for house building engineering, which is composed of a cavity component and a dense rib beam, the cavity component is composed of a bottom concrete plate, a square cavity and a top concrete plate, the square cavity and the top concrete plate are equal in boundary dimension, and the dense rib beam is arranged in the cavity component. The boundary dimension of the bottom concrete slab is larger than that of the top concrete slab, and a plurality of first steel bars extending out of the side faces are embedded in the four side faces of the top concrete slab respectively. A plurality of second reinforcing steel bars are arranged on two adjacent side surfaces of the bottom concrete slab, and U-shaped grooves matched with the second reinforcing steel bars are formed in the other two corresponding side surfaces of the bottom concrete slab; the multi-ribbed beam is arranged between the two cavity components. Bottom slurry leakage caused by upward floating in the concrete pouring process is avoided, and the quality problems such as installation position deviation are avoided due to mutual fixed connection between the cavity components.

Description

Technical Field

[0001] The invention relates to the technical field of assembled floor slabs, and in particular to a novel DCKQ cavity component for housing construction engineering. Background Art

[0002] DCKQ cavity components are the core components of a prefabricated bidirectional dense rib cavity floor system. Prefabricated dense rib cavity floor system is a new type of floor, suitable for large-span space structures. Because it uses cavity components, it is easy to assemble and install, simple to construct, and has a short construction period. The indoor ceiling is flat, no need to re-suspend the ceiling, and it has good architectural space effects and significant economic benefits. At present, this technology has been widely used in construction projects.

[0003] As a new type of cast-in-place concrete ribbed floor structure technology based on DCKQ cavity components, the prefabricated bidirectional dense rib cavity floor system is a horizontal floor system composed of prefabricated DCKQ cavity components, cast-in-place reinforced concrete dense ribbed beams and frame beams. Among them, the DCKQ cavity component is a hollow cavity composed of two upper and lower reinforced concrete slabs (or a concrete slab at the bottom) and hard materials (glass fiber cement, high-strength aluminum calcium board and other materials) on the surrounding side walls, which can bear force, support formwork, increase floor stiffness and reduce the self-weight of the floor.

[0004] The existing DCKQ cavity components have the following disadvantages: since the cavity plate itself is not solid, it is easy to float up during concrete pouring, resulting in serious leakage at the bottom, which creates certain difficulties for later decoration. Therefore, it is difficult to control the leakage at the bottom of the cavity plate during concrete pouring; at the same time, the DCKQ cavity components are staggered with the reinforced dense-ribbed beams, and there is no good fixing method between the DCKQ cavity components, which is easy to cause installation position deviation. Therefore, a new type of DCKQ cavity component is proposed. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a new DCKQ cavity component for housing construction projects, which avoids bottom leakage caused by floating during concrete pouring. The cavity components are fixedly connected to each other to avoid quality problems such as installation position deviation; the structural safety is improved, the subsequent large amount of concrete repair costs are avoided, and the technical defects of the existing DCKQ cavity components are compensated.

[0006] The technical solution of the present invention is as follows: A new type of DCKQ cavity component for housing construction engineering consists of a cavity component and a dense-ribbed beam. The cavity component consists of a bottom concrete slab, a square cavity and a top concrete slab. The outer dimensions of the square cavity and the top concrete slab are equal, the outer dimensions of the bottom concrete slab are larger than those of the top concrete slab, and a plurality of first steel bars extending out of the side surfaces are respectively embedded on the four side surfaces of the top concrete slab; a plurality of second steel bars are arranged on two adjacent side surfaces of the bottom concrete slab, and U-shaped grooves matching the second steel bars are arranged on the other two corresponding side surfaces; the dense-ribbed beam is arranged between the two cavity components.

[0007] The dense-rib beam is formed by cast-in-place concrete with a pre-embedded steel frame.

[0008] The square cavity is composed of a bottom plate, a cover plate, reinforcing ribs and side walls; a nine-square grid structure is formed in the hollow cavity by the reinforcing ribs; the bottom plate is fixedly connected to the bottom concrete plate by multiple cement nails; the height of the reinforcing ribs is lower than the side walls, and a groove for accommodating the cover plate is formed at the top of the square cavity, and the cover plate is fixedly connected to the top concrete plate by multiple cement nails. The cover plate is placed in the groove, and the side walls are fixedly connected to the cover plate by penetrating steel nails.

[0009] The square cavity is a hollow cavity made of hard material.

[0010] The square cavity is a closed hollow cavity enclosed by glass fiber reinforced cement.

[0011] The square cavity is a closed hollow cavity surrounded by high-strength calcium plates. The bottom concrete slab is 100 mm wider on each side than the top concrete slab.

[0012] Before the second steel bar is inserted into the U-shaped groove, structural adhesive is injected into the U-shaped groove.

[0013] Apply structural adhesive on the sides where the bottom concrete slabs of two adjacent cavity components contact each other.

[0014] The pre-buried steel bar skeleton in the multi-ribbed beam is bundled together with the first steel bar.

[0015] The second steel bar is provided with a transverse reinforcement, and the U-shaped groove is provided with a transverse groove corresponding to the transverse reinforcement.

[0016] The beneficial effects of the present invention are: 1. The invention discloses a novel DCKQ hollow component for housing construction engineering, which avoids the bottom leakage caused by floating of concrete during pouring.

[0017] 2. The present invention discloses a new type of DCKQ cavity component for housing construction projects, which avoids quality problems such as installation position deviation by fixing the cavity components to each other.

[0018] 3. The new DCKQ hollow component for housing construction projects disclosed in the present invention improves structural safety and avoids the subsequent large amount of concrete repair costs. It not only makes up for the technical defects of the existing DCKQ hollow components, but also produces certain economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0020] In the attached picture: Figure 1 It is a schematic diagram of the three-dimensional structure after the combination of the present invention is implemented; Figure 2 This is one of the three-dimensional structural schematic diagrams of the first embodiment of the cavity component of the present invention; Figure 3 The second is a schematic diagram of the three-dimensional structure of the first embodiment of the cavity component of the present invention; Figure 4 This is one of the three-dimensional structural schematic diagrams of the second embodiment of the cavity component of the present invention; Figure 5 This is a second schematic diagram of the three-dimensional structure of the second embodiment of the cavity component of the present invention; Figure 6 It is a schematic diagram of the square cavity structure of the present invention.

[0021] The components represented by the reference numerals in the figure are: The present invention includes: 1. a bottom concrete slab, 2. a square cavity, 3. a top concrete slab, 4. a first steel bar, 5. a DCKQ cavity member, 6. a multi-ribbed beam, 7. a second steel bar, 8. a bottom plate, 9. a cover plate, 10. a reinforcing rib, 11. a U-shaped groove, 12 a side wall, 13. a groove, 14. a transverse rib, and 15. a transverse groove. DETAILED DESCRIPTION

[0022] The following is attached to the instruction manual Figure 1-6 , the present invention is further described in detail.

[0023] A new type of DCKQ hollow component for housing construction engineering consists of a hollow component 5 and a dense-ribbed beam 6. The hollow component 5 consists of a bottom concrete slab 1, a square cavity 2 and a top concrete slab 3. The outer dimensions of the square cavity 2 and the top concrete slab 3 are equal, the outer dimensions of the bottom concrete slab 1 are larger than those of the top concrete slab 3, and a plurality of first steel bars 4 extending out of the side surfaces are respectively embedded on the four side surfaces of the top concrete slab 3; a plurality of second steel bars 7 are arranged on two adjacent side surfaces of the bottom concrete slab 1, and U-shaped grooves 11 matching the second steel bars 7 are arranged on the other two corresponding side surfaces; the dense-ribbed beam 6 is arranged between two hollow components 5.

[0024] The multi-rib beam 6 is formed by cast-in-place concrete with a pre-embedded steel frame.

[0025] The square cavity 2 is a hollow cavity made of a hard material.

[0026] The square cavity 2 is a closed hollow cavity enclosed by glass fiber reinforced cement.

[0027] The square cavity 2 is a closed hollow cavity formed by enclosing a high-strength calcium plate. The bottom concrete slab 1 is 100 mm wider on each side than the top concrete slab 3 .

[0028] Before the second steel bar 7 is inserted into the U-shaped groove 11 , structural adhesive is injected into the U-shaped groove 11 .

[0029] Structural adhesive is applied to the contacting sides of the bottom concrete slabs 1 of two adjacent cavity components 5 .

[0030] The pre-buried steel bar skeleton in the multi-rib beam 6 is bundled with the first steel bars 4 .

[0031] The second steel bar 7 is provided with a transverse rib 15 , and the U-shaped groove 11 is provided with a transverse groove 15 corresponding to the transverse rib 14 .

[0032] The new DCKQ cavity component is composed of a cavity component 5 and a dense rib beam 6. The cavity component 5 is composed of a bottom concrete slab 1, a square cavity 2 and a top concrete slab 3. A dense rib beam 6 is arranged between two cavity components 5. The dense rib beam 6 is a steel keel tied with steel bars. Then it is poured on site. It should be noted that Figure 1 In order to facilitate observation, the steel keel that is blocked after pouring is hidden and the poured concrete is not shown.

[0033] The square cavity 2 is composed of a bottom plate 8, a cover plate 9, a reinforcing rib 10 and a side wall 12. It is a hollow cavity made of a hard material, and the hollow cavity is formed into a nine-square grid structure by the reinforcing ribs 10. The bottom plate 8 is fixedly connected to the bottom concrete plate 1 by a plurality of cement nails; the height of the reinforcing rib 10 is lower than the side wall 12, and a groove 13 for accommodating the cover plate 9 is formed on the top of the square cavity 2. The cover plate 9 is fixedly connected to the top concrete plate 3 by a plurality of cement nails, and then the cover plate 9 is placed in the groove 13 and fixedly connected to the cover plate 9 by passing the side wall 12 with a steel nail. A closed cavity structure is formed. The side wall 12 and the reinforcing rib 10 are enclosed by glass fiber reinforced cement or high-strength calcium board to form a closed hollow cavity. The bottom concrete plate 1 is 100mm larger than the top concrete plate 3 on each side.

[0034] In a specific embodiment: the bottom concrete slab is extended to the surrounding areas by an edge plate of equal length and width (during construction, the gap width between the two cavity components = the width of the dense-ribbed beam 180mm + the thickness of the protective layer of the cavity side wall 20mm = 200mm, and the bottom concrete of a single cavity component extends 100mm in all directions, which can cover the bottom of the dense-ribbed beam), and the bottom of the dense-ribbed beam is fully covered to avoid quality problems such as inaccurate positioning, floating of the cavity component, and leakage of slurry.

[0035] Add a U-shaped groove to the bottom concrete slab (the diameter of the U-shaped groove is at least 1.5 times the diameter of the steel bar to ensure sufficient fault tolerance space and structural adhesive storage space). The steel bars at the bottom of the cavity slab are arranged corresponding to the U-shaped groove. During construction, the second steel bars of the bottom concrete slabs of two adjacent cavity components are butted against the U-shaped groove. Apply structural adhesive to the edge of the bottom concrete to connect the adjacent cavity components.

[0036] After the application of the new DCKQ cavity component, the dense rib beam reinforcement is directly tied on the concrete slab that has been stretched and connected at the bottom of the cavity component. Before tying the reinforcement, the bottom concrete needs to be brushed and roughened. After the dense rib beam reinforcement is tied, the bottom concrete also serves as the dense rib beam reinforcement protection layer and the bottom formwork, and is combined with the cast-in-place concrete. The reinforcement of the upper concrete slab of the cavity component is extended into the surrounding cast-in-place concrete dense rib beam and tied and fixed, ensuring that the cavity component and the cast-in-place structure form a force-bearing whole.

[0037] The present application extends the bottom concrete slab of the cavity component outwards to reserve a concrete sealing slab at the bottom of the dense-rib beam.

[0038] The present application adds a U-shaped groove to the concrete slab at the bottom of the cavity component and arranges it in correspondence with the second steel bar, and the adjacent side steel bars of the cavity component and the U-shaped groove are arranged in an interlaced manner, so as to facilitate the connection between the bottom plates of adjacent cavity components.

[0039] The present application improves the construction process of the assembled prefabricated two-way dense-rib cavity floor system and adopts a construction process in which the bottom concrete of adjacent cavity components is connected to each other by using structural adhesive.

Claims

1. A new type of DCKQ cavity component for housing construction engineering, characterized in that: The hollow member (5) is composed of a hollow member (5) and a multi-ribbed beam (6); the hollow member (5) is composed of a bottom concrete slab (1), a square cavity (2) and a top concrete slab (3); the outer dimensions of the square cavity (2) and the top concrete slab (3) are equal; the outer dimensions of the bottom concrete slab (1) are larger than those of the top concrete slab (3); and a plurality of first steel bars (4) extending out of the side surfaces are respectively embedded on four side surfaces of the top concrete slab (3); A plurality of second steel bars (7) are arranged on two adjacent side surfaces of the bottom concrete slab (1), and U-shaped grooves (11) matching the second steel bars (7) are arranged on the other two corresponding side surfaces; the multi-rib beam (6) is arranged between the two cavity components (5).

2. A new type of DCKQ cavity component for housing construction engineering according to claim 1, characterized in that: The pre-buried steel bar skeleton in the multi-ribbed beam (6) is bundled with the first steel bar (4), and concrete is cast on the pre-buried steel bar skeleton.

3. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The square cavity (2) is composed of a bottom plate (8), a cover plate (9), a reinforcing rib (10) and a side wall (12); a nine-square grid structure is formed in the hollow cavity by the reinforcing rib (10); the bottom plate (8) is fixedly connected to the bottom concrete plate (1) by a plurality of cement nails; the reinforcing rib (10) is lower in height than the side wall (12); a groove (13) for accommodating the cover plate (9) is formed at the top of the square cavity (2); the cover plate (9) is fixedly connected to the top concrete plate (3) by a plurality of cement nails; the cover plate (9) is placed in the groove (13); and the side wall (12) is fixedly connected to the cover plate (9) by steel nails passing through.

4. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The square cavity (2) is a hollow cavity made of a hard material.

5. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The square cavity (2) is a closed hollow cavity enclosed by glass fiber reinforced cement.

6. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The square cavity (2) is a closed hollow cavity enclosed by high-strength calcium plates.

7. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The bottom concrete slab (1) is 100 mm wider on each side than the top concrete slab (3).

8. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: Before the second steel bar (7) is inserted into the U-shaped groove (11), structural adhesive is injected into the U-shaped groove (11).

9. The novel DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: Structural adhesive is applied to the contacting sides of the bottom concrete slabs (1) of two adjacent cavity components (5).

10. The new DCKQ cavity component for housing construction engineering according to claim 1 is characterized in that: The second steel bar (7) is provided with a transverse bar (15), and the U-shaped groove (11) is provided with a transverse groove (15) corresponding to the transverse bar (14).

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