Steel bar net rack sandwich insulation board prefabricated part convenient to construct

Through the design of prefabricated components and plug-in connecting steel bars of the steel mesh sandwich insulation board, the problems of large amount of filling walls on site and difficulty in dismantling the connecting steel bars in the prior art are solved, and construction efficiency and dismantling convenience are improved.

CN223034265UActive Publication Date: 2025-06-27RENQIU JINGDA BUILDING ENERGY SAVING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422256596.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2025-06-27
Estimated Expiration
2034-09-14

AI Technical Summary

Technical Problem

In the prior art, the on-site pouring amount of the filling wall is large, and the presence of the connecting steel bars increases the workload during later disassembly, and the remaining connecting steel bars cannot be removed.

Method used

The prefabricated members of the steel mesh sandwich insulation board are used to quickly form prefabricated members through multiple sets of prefabricated units. The connecting steel bars are connected to the main structure wall by plug-in method, and the connecting steel bars are disconnected by pulling and pulling.

Benefits of technology

It improves construction efficiency, reduces the amount of on-site construction and pouring, and does not need to cut off the connecting steel bars during disassembly, and directly realizes the partition dismantling of the filling wall.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of buildings, and particularly relates to a reinforced net rack sandwich insulation board prefabricated part convenient to construct, which comprises a plurality of groups of prefabricated units connected end to end, and each prefabricated unit comprises an insulation board and concrete prefabricated layers arranged on the front side and the rear side of the insulation board. The concrete prefabricated layers on the two sides jointly clamp the heat preservation plate and are fixed in a crossed mode through a plurality of obliquely-inserted steel bars, the prefabricated unit further comprises connecting steel bars, inserting holes are horizontally formed in the concrete prefabricated layers in the length direction of the concrete prefabricated layers, and the connecting steel bars are in sliding fit with the inserting holes and have the freedom degree of stretching out and drawing back along the inserting holes. Positioning holes matched with the connecting steel bars in an inserted mode are formed in the main body structure wall, and the first-stage preset unit is matched with the main body structure wall in an inserted mode by means of matching of the connecting steel bars and the positioning holes. According to the utility model, a plurality of groups of preset units are mutually connected to quickly form a prefabricated part, and a filler wall does not need to be built on site, so that the construction efficiency is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and particularly relates to a prefabricated component of a steel bar grid sandwich thermal insulation board which is convenient for construction. Background Art

[0002] At present, most of the infill walls are cast on site. It is necessary to insert the inclined steel bars and the thermal insulation board on site for insertion and cooperation, and then pour the infill wall and the main structure wall integrally. The on-site construction volume is relatively large.

[0003] In addition, in order to ensure the connection stability between the infill wall and the main structure wall, connecting steel bars are also arranged between the casting layers of the main structure wall and the infill wall. The connecting steel bars are used to increase the integrity between the infill wall and the main structure wall. However, during the later disassembly process, since the main structure wall cannot be disassembled, the presence of the connecting steel bars causes the infill wall to not be directly demolished. It is necessary to saw off the connecting steel bars first and then disassemble the infill wall to avoid damaging the main structure wall during the demolition of the infill wall. However, this method increases the workload of disassembling the infill wall, and the connecting steel bars remaining in the main structure wall cannot be removed. Content of the Utility Model

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a prefabricated component of a steel bar grid sandwich thermal insulation board which is convenient for construction. The prefabricated component is quickly formed by connecting multiple preset units with each other, and there is no need to build the infill wall on site, which improves the construction efficiency. In addition, the connecting steel bars in the utility model are connected with the main structure wall in an inserted manner. When disassembling the infill wall, the connecting steel bars can be separated from the main structure wall by pulling, so that the infill wall is separated from the main structure wall.

[0005] The specific technical solution adopted by the utility model is as follows:

[0006] A prefabricated component of a steel bar grid sandwich thermal insulation board which is convenient for construction. The prefabricated component includes multiple preset units connected end to end. The preset unit includes a thermal insulation board and concrete precast layers arranged on the front and back sides of the thermal insulation board. The two concrete precast layers jointly clamp the thermal insulation board and are cross-fixed by multiple inclined steel bars. The preset unit further includes connecting steel bars. Plugging holes are horizontally arranged on the concrete precast layer along the length direction of the concrete precast layer. The connecting steel bars are in sliding fit with the plugging holes and have the freedom to expand and contract along the plugging holes. Positioning holes are arranged on the main structure wall and are in inserted fit with the connecting steel bars. The first-level preset unit forms an inserted match with the main structure wall by the cooperation of the connecting steel bars and the positioning holes.

[0007] A cast-in-place layer is further arranged on the surface of the concrete precast layer. A welded steel bar mesh is buried in the cast-in-place layer. The end of the connecting steel bar is tied and connected with the welded steel bar mesh. The preset unit is integrated with the main structure wall by means of the cast-in-place layer.

[0008] Plug-in holes are provided on both sides of the precast concrete layer. An installation window is provided at the closed end of the plug-in hole, which runs horizontally and vertically through the precast concrete layer. The open end of the installation window faces away from the insulation board. One end of the connecting steel bar passes through the plug-in hole of the upper-level precast unit and bends at the installation window. The other end of the connecting steel bar passes through the plug-in hole of the lower-level precast unit and is fixedly connected to the precast concrete layer by means of a nut at the installation window. Adjacent precast units are bolted together by means of connecting steel bars.

[0009] A gasket is also provided between the nut and the installation window. The gasket is provided with a through-hole for the connecting steel bar to pass through, and the nut abuts against the side wall of the installation window by means of the gasket.

[0010] The precast unit includes a first sealing plug. The first sealing plug is provided with a through-hole for the connecting steel bar to pass through, and the first sealing plug fills the gap between the plug-in hole and the connecting steel bar.

[0011] The precast unit includes a second sealing plug. The second sealing plug is provided with a through-hole for the bent portion of the connecting steel bar to pass through, and the installation window is sealed by means of the second sealing plug.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model provides a precast component, which is formed by combining multiple precast units. The precast units are processed and formed in the factory, and multiple precast units are directly connected to each other on the construction site to quickly form a precast component, eliminating the need to build infill walls on-site and improving construction efficiency.

[0014] 2. The connecting steel bars in the present utility model are connected to the main structure wall in a plug-in manner. During installation, the exposed length of the connecting steel bars can be adjusted by stretching, so as to ensure its matching with the positioning holes of the main structure wall. There is no need to cut the connecting steel bars on-site. When disassembling the infill wall, the connecting steel bars can be pulled out of the main structure wall, enabling the infill wall to be separated from the main structure wall, so that the connecting steel bars do not need to be sawed off and the infill wall can be directly disassembled. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a precast unit;

[0016] Figure 2 It is an assembly schematic diagram of a precast component and a main structure wall;

[0017] Figure 3 It is a front assembly schematic diagram of a precast component and a main structure wall;

[0018] Figure 4 For Figure 2Enlarged schematic view of part A;

[0019] Figure 5 is Figure 2 Enlarged schematic view of part B;

[0020] In the attached drawings, 1 is a thermal insulation board, 2 is a precast concrete layer, 3 is an inclined inserted steel bar, 4 is a connecting steel bar, 5 is a plugging hole, 6 is a main structure wall, 7 is a positioning hole, 8 is a cast-in-place layer, 9 is a welded steel bar mesh, 10 is an installation window, 11 is a gasket, 12 is a first sealing plug, 13 is a second sealing plug, and 14 is a third sealing plug. Specific implementation mode

[0021] The following further describes the present utility model in conjunction with the attached drawings and specific embodiments:

[0022] Specific embodiment, as Figures 1-5 shown, the present utility model provides a prefabricated member of a steel bar grid sandwich thermal insulation board 1 that is convenient for construction. The prefabricated member includes multiple groups of prefabricated units connected end to end. The prefabricated unit includes a thermal insulation board 1 and precast concrete layers 2 arranged on the front and back sides of the thermal insulation board 1. The precast concrete layers 2 on both sides jointly clamp the thermal insulation board 1 and are cross-fixed by multiple inclined inserted steel bars 3. The prefabricated unit further includes a connecting steel bar 4. Plugging holes 5 are horizontally arranged on the precast concrete layer 2 along the length direction of the precast concrete layer 2. The connecting steel bar 4 is slidably matched with the plugging holes 5 and has the freedom to expand and contract along the plugging holes 5. Positioning holes 7 that are inserted and matched with the connecting steel bar 4 are arranged on the main structure wall 6. The first-level prefabricated unit forms an inserted matching with the main structure wall 6 by means of the cooperation between the connecting steel bar 4 and the positioning holes 7.

[0023] At present, most infill walls are cast in place on site. It is necessary to insert and match the inclined inserted steel bars 3 with the thermal insulation board 1 on site, and then integrally pour between the infill wall and the main structure wall 6. The on-site construction volume is relatively large. Therefore, the present utility model provides a prefabricated member, which is formed by combining multiple groups of prefabricated units. The prefabricated units are processed and formed in the factory, and multiple groups of prefabricated units are directly connected to quickly form a prefabricated member at the construction site, without the need to build an infill wall on site, improving the construction efficiency.

[0024] In addition, the connecting steel bar 4 in the present utility model is connected to the main structure wall 6 in an inserted manner. During installation, the exposed length of the connecting steel bar 4 can be adjusted by expansion and contraction, so as to ensure its matching with the positioning holes 7 of the main structure wall 6, without the need to cut and saw the connecting steel bar 4 on site. When disassembling the infill wall, the connecting steel bar 4 can be separated from the main structure wall 6 by pulling, so that the infill wall and the main structure wall 6 can be separated, without the need to saw off the connecting steel bar 4, and the infill wall can be directly disassembled.

[0025] A cast-in-place layer 8 is further provided on the surface of the precast concrete layer 2. A welded steel bar mesh 9 is also embedded in the cast-in-place layer 8. The end of the connecting steel bar 4 is tied and connected to the welded steel bar mesh 9. The precast unit is integrated with the main structure wall 6 by means of the cast-in-place layer 8. After the precast member of the present utility model is spliced with the main structure wall, pouring is carried out. Since the precast concrete layer 2 is relatively thin, sufficient space is left on both sides of the precast member for pouring to form the cast-in-place layer 8. The welded steel bar mesh 9 can increase the structural strength of the cast-in-place layer 8 of the infill wall.

[0026] Insertion holes 5 are provided on both sides of the precast concrete layer 2. The closed end of the insertion hole 5 is provided with an installation window 10 that runs horizontally and vertically through the precast concrete layer 2. The open end of the installation window 10 faces away from the insulation board 1. One end of the connecting steel bar 4 passes through the insertion hole 5 of the upper-level precast unit and bends at the installation window 10. The other end of the connecting steel bar 4 passes through the insertion hole 5 of the lower-level precast unit and is fixedly connected to the precast concrete layer 2 by means of a nut at the installation window 10. Adjacent precast units are bolted together by means of the connecting steel bar 4.

[0027] In the present utility model, the precast units are connected by means of the connecting steel bar 4. During connection, both ends of the connecting steel bar 4 pass through the insertion holes 5 of two adjacent precast units respectively and are exposed at the installation window 10. One end of the connecting steel bar 4 bends along the installation window 10 to form a bent portion. Since a bolt is provided on the connecting steel bar 4, the other end of the connecting steel bar 4 is screwed by means of a nut. During the screwing process, the bent portion gradually approaches the adjacent precast unit until the bent portion abuts against the side wall of the installation window 10 and the nut cannot be screwed any further. At this time, the two adjacent precast units abut against each other and are fixedly connected by the pulling of the connecting steel bar 4. When decoration and disassembly are required, the nut is screwed in the reverse direction and the connecting steel bar 4 is pulled out along the installation window 10 on the side of the bent portion, thus realizing the sectional disassembly of the infill wall, which is more convenient for disassembly.

[0028] A gasket 11 is further provided between the nut and the installation window 10. The gasket 11 is provided with a through hole for the connecting steel bar 4 to pass through. The nut abuts against the side wall of the installation window 10 by means of the gasket 11. By providing the gasket 11, the pressure generated by the nut on the side wall of the installation window 10 is reduced, thereby avoiding damage to the precast concrete layer during the process of screwing the nut.

[0029] The precast unit includes a first sealing plug 12. A through hole for the connecting steel bar 4 to pass through is provided on the first sealing plug 12. The first sealing plug 12 fills the gap between the insertion hole 5 and the connecting steel bar 4. On the one hand, the first sealing plug 12 limits the connecting steel bar 4 by the frictional force between the connecting steel bar 4 and the first sealing plug 12. On the other hand, it can prevent concrete from entering the insertion hole 5 during the pouring of the cast-in-place layer 8, avoiding the formation of a fixed connection between the connecting steel bar 4 and the cast-in-place layer 8, which may cause the connecting steel bar 4 to be unable to be withdrawn. In addition, a third sealing plug 14 is provided at the positioning hole 7, and the third sealing plug 14 is used to fill the gap between the positioning hole 7 and the connecting steel bar 4.

[0030] The precast unit includes a second sealing plug 13. A through hole for the bent part of the connecting steel bar 4 to pass through is provided on the second sealing plug 13. The installation window 10 is blocked by means of the second sealing plug 13. The present utility model also provides a second sealing plug 13, and the second sealing plug 13 blocks the installation window 10, preventing concrete from entering the installation window 10 during the casting process, which may cause the concrete to solidify and connect the concrete precast layer 2 and the connecting steel bar 4, making the connecting steel bar 4 unable to be disassembled. When disassembling, first disassemble the outer cast-in-place layer 8, then remove the second sealing plug 13, and then the connecting steel bar 4 can be disengaged from the adjacent precast unit along the installation window 10.

Claims

1. A prefabricated component of a steel grid sandwich insulation board that is easy to construct, the prefabricated component comprising a plurality of prefabricated units connected end to end, the prefabricated units comprising an insulation board (1) and a prefabricated concrete layer (2) arranged on both sides of the insulation board (1), the prefabricated concrete layers (2) on both sides jointly clamp the insulation board (1) and are cross-fixed by means of a plurality of obliquely inserted steel bars (3), characterized in that: The prefabricated unit also includes connecting steel bars (4); a plug-in hole (5) is horizontally arranged on the prefabricated concrete layer (2) along the length direction of the prefabricated concrete layer (2); the connecting steel bars (4) are slidably matched with the plug-in hole (5) and have the freedom to expand and contract along the plug-in hole (5); a positioning hole (7) is arranged on the main structure wall (6) and is plug-matched with the connecting steel bars (4); the first-level prefabricated unit forms a plug-in match with the main structure wall (6) by means of the matching between the connecting steel bars (4) and the positioning hole (7).

2. The prefabricated component of a steel grid sandwich insulation board that is easy to construct according to claim 1, characterized in that: A cast-in-place layer (8) is also provided on the surface of the prefabricated concrete layer (2), a steel welded mesh (9) is also embedded in the cast-in-place layer (8), the end of the connecting steel bar (4) is tied and connected to the steel welded mesh (9), and the prefabricated unit is formed into one body with the main structure wall (6) by means of the cast-in-place layer (8).

3. The prefabricated component of a steel grid sandwich insulation board that is easy to construct according to claim 1 is characterized in that: Both sides of the concrete prefabricated layer (2) are provided with plug holes (5), and the closed end of the plug hole (5) is provided with an installation window (10) that passes through the concrete prefabricated layer (2) in a horizontal direction and vertically, and the open end of the installation window (10) faces away from the insulation board (1). One end of the connecting steel bar (4) passes through the plug hole (5) of the upper-level prefabricated unit and is bent at the installation window (10), and the other end of the connecting steel bar (4) passes through the plug hole (5) of the lower-level prefabricated unit and is fixedly connected to the concrete prefabricated layer (2) at the installation window (10) by means of a nut, and adjacent prefabricated units are bolted together by means of the connecting steel bar (4).

4. The prefabricated component of a steel grid sandwich insulation board that is easy to construct according to claim 3 is characterized in that: A gasket (11) is also provided between the nut and the installation window (10), and a through hole is provided on the gasket (11) for the connecting steel bar (4) to pass through. The nut is in contact with the side wall of the installation window (10) by means of the gasket (11).

5. The steel grid sandwich insulation board prefabricated component that is easy to construct according to claim 1 is characterized in that: The prefabricated unit comprises a first sealing plug (12), the first sealing plug (12) being provided with a through hole for the connecting steel bar (4) to pass through, and the first sealing plug (12) filling the gap between the plug hole (5) and the connecting steel bar (4).

6. The steel grid sandwich insulation board prefabricated component that is easy to construct according to claim 3 is characterized in that: The prefabricated unit comprises a second sealing plug (13), the second sealing plug (13) being provided with a through hole for the bending part of the connecting steel bar (4) to pass through, and the installation window (10) is sealed by means of the second sealing plug (13).