Fabricated building roof connecting structure

Abstract

The utility model discloses an assembly type building roof connecting structure which comprises a building body and a prefabricated parapet wall, connecting steel bars are reserved at the top of the building body and arranged in the height direction of the building body, a connecting box is pre-buried in the prefabricated parapet wall, and the prefabricated parapet wall is connected with the connecting box. Connecting holes for the connecting steel bars to penetrate through are reserved in the bottom of the connecting box, when the prefabricated parapet wall is installed, the prefabricated parapet wall is located on the building body, the connecting steel bars penetrate through the connecting holes, and the connecting steel bars are locked through locking pieces. The prefabricated parapet wall and the building main body are conveniently and reliably connected, and the waterproof parapet wall has good waterproof performance.

Description

Technical Field

[0001] The utility model relates to prefabricated buildings, in particular to a roof connection structure for prefabricated buildings. Background Art

[0002] A parapet wall is a low wall surrounding the roof of a building. Its main functions include not only maintaining safety but also applying waterproof pressure bricks at the bottom to prevent the waterproof layer from seeping water or the roof rainwater from overflowing. According to the national building code, the height of the parapet wall on a walkable roof generally shall not be less than 1.1m and shall not be greater than 1.5m at most. The function of the parapet wall on a walkable roof is to protect the safety of personnel and play a decorative role for the building facade. The function of the parapet wall on a non-walkable roof, in addition to the decorative role of the facade, also fixes the roofing felt.

[0003] At present, most parapet walls are constructed by means of in-situ casting. However, the in-situ casting process has many procedures, a long construction period, high rental equipment costs, and great difficulty in quality control.

[0004] Chinese Patent CN108756084A discloses a prefabricated parapet wall and its connection method. By embedding connecting steel bars in the precast parapet wall body and making a part of the connecting steel bars protrude from the precast parapet wall body, and then pouring the bottom of the precast parapet wall body and the connecting steel bars together with the building main body into one body, the connection construction of the parapet wall is realized. This method also has the problems of many in-situ casting procedures, a long construction period, and high rental equipment costs. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a roof connection structure for prefabricated buildings with convenient and reliable connection, aiming at the deficiencies of large in-situ casting volume and long construction period when the precast parapet wall is connected to the building main body.

[0006] To solve the above technical problem, the utility model adopts the following technical scheme:

[0007] A roof connection structure for prefabricated buildings includes a building main body and a precast parapet wall. Connecting steel bars are reserved at the top of the building main body and arranged along the height direction of the building main body. A connecting box is embedded in the precast parapet wall, and a connecting channel for the connecting steel bars to enter is reserved at the bottom of the connecting box. When the precast parapet wall is installed, the precast parapet wall is placed on the building main body, and the connecting steel bars enter the connecting box through the connecting channel and are locked by locking pieces.

[0008] In this way, the connection between the precast parapet wall and the building main body can be realized without in-situ casting operation, and the connecting steel bars and the connecting box are locked by locking pieces, so the connection is convenient and reliable.

[0009] Preferably, the connecting steel bars are screws, and the locking members are nuts matching the screws.

[0010] In a specific embodiment, the building main body includes a precast wall and a floor slab. The connecting steel bars are embedded in the precast wall, and perforations for the connecting steel bars to pass through are provided in the floor slab. The connecting steel bars pass through the perforations and extend a certain distance out of the floor slab.

[0011] Preferably, the floor slab is a composite floor slab, and the perforations are reserved in the precast layer of the composite floor slab, and the perforations are filled with cement mortar.

[0012] Preferably, the upper surface of the floor slab is connected to the lower surface of the precast parapet wall through a bedding layer, and the lower surface of the floor slab is connected to the upper surface of the precast wall through a bedding layer.

[0013] Preferably, the outer side of the bottom of the precast parapet wall is lower than the inner side, the outer side height of the top of the precast wall is greater than the inner side height, and the outer side of the precast parapet wall is located on the outer side of the precast wall. The floor slab extends into the inner sides of the precast parapet wall and the precast wall to improve the waterproof performance of the building.

[0014] Preferably, a curb is provided around the floor slab. The upper surface of the curb is higher than the upper surface of the floor slab, and the curb is placed in the precast parapet wall or the precast wall to prevent rainwater on the roof floor slab from flowing down along the precast wall (precast external wall).

[0015] Preferably, a waterproof glue is provided on the outer side of the joint between the precast parapet wall and the precast wall to prevent rainwater from entering through the joint.

[0016] Preferably, thermal insulation materials are respectively installed in the precast parapet wall and the precast wall to improve the thermal insulation performance of the building.

[0017] Preferably, a rabbet is provided between the upper precast wall and the lower precast wall to prevent rainwater from entering through the joint.

[0018] Preferably, the connecting channel is a connecting groove or a connecting hole matching the diameter of the connecting steel bars.

[0019] The utility model is mainly applied to the connection between the precast parapet wall of the prefabricated building and the building main body. Specifically, each component is connected into a whole through connecting steel bars, connecting boxes, the floor surface layer of the cast-in-place floor slab, etc. It is particularly suitable for the construction of the exposed surface of the fully prefabricated building, and the overall connection is reliable. The waterproof effect of the exposed surface and the roof structure of the fully prefabricated building can also be improved by providing a curb around the floor slab.

[0020] The use of the present utility model reduces the construction difficulty of the connection between the precast parapet wall and the building main body, shortens the construction period, realizes the fully assembled installation of the precast parapet wall and the building main body, reduces the on-site cast-in-place operation, well protects the surrounding environment, and realizes green construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the roof connection structure of the prefabricated building of the present utility model Figure 1 。

[0023] Figure 2 Schematic diagram of the roof connection structure of the prefabricated building of the present utility model Figure 2 。

[0024] In the figure: 1 - lower wall panel, 2 - composite floor slab, 3 - reinforced concrete cast-in-place layer, 4 - anti-camber, 5 - connection box, 6 - precast parapet wall, 7 - thermal insulation material, 8 - waterproof glue, 9 - grouting layer, 10 - perforation, 11 - cement mortar, 12 - connecting steel bar, 13 - connection channel, 14 - locking member, 15 - precast column, 16 - precast beam, 17 - tongue-and-groove joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the present utility model in conjunction with specific preferred embodiments, but does not limit the protection scope of the present utility model thereby.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Please refer to Figure 1 、 Figure 2 As shown in FIGS.

[0029] In an embodiment of the roof connection structure of the prefabricated building of the present utility model, it includes a building main body and a precast parapet wall 6. The building main body includes a precast wall 1 and a floor slab 2. A connecting steel bar 12 is embedded at the top of the precast wall 1, and the connecting steel bar 12 is arranged along the height direction of the precast wall 1. A through hole 10 for the connecting steel bar 12 to pass through is provided in the floor slab 2. A connecting box 5 is embedded inside the precast parapet wall 6, and a connecting channel 13 for the connecting steel bar 12 to enter is reserved at the bottom of the connecting box 5. The connecting channel 13 is preferably a U-shaped connecting groove opened on one side of the bottom plate of the connecting box 5. Obviously, a connecting hole can also be directly opened on the bottom plate of the connecting box 5 to achieve this.

[0030] When installing the precast parapet wall 6, the floor slab 2 has been installed on the precast wall 1, and the connecting steel bar 12 passes through the through hole 10 and extends out above the floor slab 2. At this time, only need to horizontally push the precast parapet wall 6 from outside to inside onto the floor slab 2. During this process, the connecting steel bar 12 enters the connecting box 5 through the connecting channel 13. After the precast parapet wall 6 is installed in place, use a locking member 14 to lock the connecting steel bar 12 in the connecting box 5.

[0031] The floor slab 2 is preferably a composite floor slab, the through hole 10 is reserved in the precast layer of the composite floor slab, and the through hole 10 is filled with cement mortar 11.

[0032] To ensure the waterproof effect at the connection between the precast parapet wall 6 and the precast wall 1: the outer side at the bottom of the precast parapet wall 6 is lower than the inner side, the outer side height at the top of the precast wall 1 is greater than the inner side height, and the outer side of the precast parapet wall 6 is seated on the outer side of the precast wall 1. The upper surface of the composite floor slab is connected to the lower surface of the inner side of the precast parapet wall 6 through a bedding layer 10, and the lower surface of the composite floor slab is connected to the upper surface of the inner side of the precast wall 1 through a bedding layer 10.

[0033] To prevent the rainwater on the roof from flowing down along the precast wall 1, a counterfort 4 is provided around the cast-in-place layer of the composite floor slab, and the counterfort 4 is placed inside the precast parapet wall 6 or the precast wall 1. The upper surface of the counterfort 4 is higher than the upper surface of the composite floor slab to prevent the rainwater on the roof floor slab from flowing down along the precast wall (precast exterior wall). To further improve the waterproof effect, a waterproof glue 8 is provided on the outer side of the joint between the precast parapet wall 6 and the precast wall 1, or a tongue-and-groove 17 is provided between the upper precast wall and the lower precast wall.

[0034] To improve the building insulation effect, thermal insulation materials 7 are respectively installed in the precast parapet wall 6 and the precast wall 1.

[0035] As described above, the above are only specific implementation schemes of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes and modifications to the technical solution of the present utility model by using the technical content disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall fall within the protection scope of the technical solution of the present utility model.

Claims

1. An assembled building roof connection structure, comprising a building main body and a precast parapet wall, characterized in that: Reinforcing bars for connection are reserved at the top of the building main body, and the reinforcing bars for connection are arranged along the height direction of the building main body. A connection box is embedded in the precast parapet wall, and a connection channel for the reinforcing bars for connection to enter is reserved at the bottom of the connection box. When the precast parapet wall is installed, the precast parapet wall is seated on the building main body, and the reinforcing bars for connection enter the connection box through the connection channel, and the reinforcing bars for connection are locked with a locking member.

2. The prefabricated building roof connection structure according to claim 1, characterized in that, The reinforcing bars for connection are screws, and the locking member is a nut matching the screws.

3. The prefabricated building roof connection structure according to claim 1, characterized in that The building main body includes precast walls and floor slabs. The reinforcing bars for connection are embedded in the precast walls, and through holes for the reinforcing bars for connection to pass through are provided in the floor slabs. The reinforcing bars for connection pass through the through holes and extend a certain distance out of the floor slabs.

4. The prefabricated building roof connection structure according to claim 3, characterized in that, The floor slab is a composite floor slab, and the through holes are reserved in the precast layer of the composite floor slab, and the through holes are filled with cement mortar.

5. The prefabricated building roof connection structure according to claim 3, characterized in that, The upper surface of the floor slab is connected to the lower surface of the precast parapet wall through a mortar bedding layer, and the lower surface of the floor slab is connected to the upper surface of the precast wall through a mortar bedding layer.

6. The prefabricated building roof connection structure according to claim 3, wherein, The outer side of the bottom of the precast parapet wall is lower than the inner side, the outer side height of the top of the precast wall is greater than the inner side height, and the outer side of the precast parapet wall is seated on the outer side of the precast wall, and the floor slab extends into the inner sides of the precast parapet wall and the precast wall.

7. The prefabricated building roof connection structure according to any one of claims 3-6, characterized in that, Anti-curbs are provided around the floor slab, the upper surface of the anti-curbs is higher than the upper surface of the floor slab, and the anti-curbs are arranged in the precast parapet wall or the precast wall.

8. The prefabricated building roof connection structure according to claim 7, characterized in that, A waterproof glue is provided on the outer side of the joint between the precast parapet wall and the precast wall.

9. The prefabricated building roof connection structure according to claim 7, characterized in that, A tongue-and-groove is provided between the upper precast wall and the lower precast wall.

10. The prefabricated building roof connection structure according to any one of claims 1-6, characterized in that, The connection channel is a connection groove or a connection hole matching the diameter of the reinforcing bars for connection.

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