Embedded-keel-free installation system and installation method for large curtain wall

Abstract

The invention provides a large curtain wall pre-embedding-free keel installation system and an installation method, which overcome the problems of a traditional keel pre-embedding construction scheme, reduce the installation cost, improve the installation precision, the construction efficiency and the reliability, reduce the safety risk and reduce the influence on a main body structure, and comprise a reinforced concrete slab and a reinforced concrete beam, an upper end plate and a lower end plate are respectively arranged on the top surface and the bottom surface of the reinforced concrete beam; the outer side and the inner side of the reinforced concrete beam are each provided with a plurality of vertically-distributed screws, and the upper ends and the lower ends of the screws located on the outer side of the reinforced concrete beam are connected with the upper end plate and the lower end plate correspondingly. When the curtain wall main keel is installed, the curtain wall main keel is located between two reinforced concrete beams corresponding to an upper floor and a lower floor of a building, the upper end of the curtain wall main keel is connected with the lower end plate located on the upper layer, and the lower end of the curtain wall main keel is connected with the upper end plate located on the lower layer.

Description

Technical Field

[0001] The invention relates to the field of building engineering construction facilities, and in particular to a large curtain wall pre-buried keel-free installation system. Background Art

[0002] With the continuous advancement of modern building technology and the acceleration of urbanization, building curtain walls, as the external protective structure of buildings, not only meet the basic needs of buildings such as lighting, ventilation, insulation, and heat preservation in terms of function, but also become an important element of modern architectural design in terms of appearance, giving buildings unique aesthetic value and visual impact. Large curtain walls are increasingly widely used in projects such as high-rise and super high-rise buildings and large commercial complexes, and their scale and complexity are constantly increasing.

[0003] During the construction of high-rise buildings, large wall curtains are often located on the outside of the building. Reinforced concrete slabs (also called concrete floor slabs) are cast, and reinforced concrete beams are cast on the outside of the reinforced concrete slabs. The upper and lower ends of the keel are fixedly connected to the upper and lower adjacent reinforced concrete beams, and then the wall curtain is installed on the keel.

[0004] The keel is the core supporting part of the curtain wall structure. It is responsible for transferring various loads (such as wind load, earthquake load, deadweight, etc.) borne by the curtain wall panels to the main structure, which is directly related to the overall stability, safety and service life of the curtain wall. Therefore, the installation quality and accuracy of large curtain wall keels are crucial and are the key link to ensure the quality of curtain wall projects.

[0005] In the traditional large-scale curtain wall installation process, pre-embedded keels in reinforced concrete beams are a common construction method. However, this method has many problems. First, the pre-embedded work needs to be carried out during the main construction stage of the building, and its precision requirements are high. Once there is a deviation, it is difficult to adjust later, which may affect the accurate installation position of the curtain wall keel, and then affect the overall flatness and verticality of the curtain wall. Secondly, the pre-embedded process is relatively complicated, which requires a lot of time and manpower, increases the construction cost and construction period. The main reason is that the embedded parts will hinder the installation of the concrete formwork, affecting the construction efficiency and the smoothness of the formwork installation. In the concrete vibration link, due to the force of the vibration, it is very easy to cause the embedded parts to shift, which in turn causes the embedded parts and the keel to be misaligned during installation, seriously affecting the construction accuracy and quality. There may also be omissions during the placement of the embedded parts, which will not only delay the construction progress, but also increase additional remedial costs and construction difficulties. Moreover, the embedded parts may be affected by factors such as concrete corrosion during long-term use, reducing their connection strength and durability, thereby affecting the safety and service life of the curtain wall.

[0006] In view of the many problems existing in the existing large-scale curtain wall keel installation technology, the construction industry urgently needs a new keel installation method that can improve installation accuracy and construction efficiency, reduce safety risks, and reduce the impact on the main structure. Summary of the invention

[0007] The present invention provides a large curtain wall pre-buried keel-free installation system and installation method, which overcomes the problems of the traditional keel pre-buried construction scheme, reduces the installation cost, improves the installation accuracy, construction efficiency, reliability, reduces the safety risk, and reduces the impact on the main structure. The present invention is achieved through the following technical solutions: A large curtain wall pre-buried keel-free installation system comprises a reinforced concrete slab and a reinforced concrete beam, wherein the reinforced concrete beam is arranged at the outer end of the reinforced concrete slab, the bottom surface of the reinforced concrete beam is lower than the bottom surface of the reinforced concrete slab, and the top surface and bottom surface of the reinforced concrete beam are respectively provided with an upper end plate and a lower end plate; A plurality of vertically distributed screw rods are respectively arranged on the outer side and the inner side of the reinforced concrete beam, and the upper and lower ends of the screw rods located on the outer side of the reinforced concrete beam are respectively connected to the upper end plate and the lower end plate; The reinforced concrete slab is provided with a vertically penetrating bolt hole at a position close to the inner side of the reinforced concrete beam, and the screw located on the inner side of the reinforced concrete beam passes through the bolt hole and is respectively connected to the upper end plate and the lower end plate; When installing the main curtain wall keel, the main curtain wall keel is located between two reinforced concrete beams corresponding to the upper and lower floors of the building, the upper end of the main curtain wall keel is connected to the lower end plate located on the upper floor, and the lower end of the main curtain wall keel is connected to the upper end plate located on the lower floor.

[0008] Furthermore, the upper end plate and the lower end plate are both provided with screw holes at the connection positions with the screw rods, and the ends of the screw rods are passed through the screw holes and fixedly connected by nuts.

[0009] Furthermore, a connecting rod is implanted at the bottom of the reinforced concrete beam, and the lower end of the connecting rod passes through the lower end plate and is connected to the lower end plate.

[0010] Furthermore, two shear members attached to the inner and outer sides of the reinforced concrete beam are arranged on both sides of the lower end plate, and the shear members and the screw holes on the lower end plate are staggered along the length direction of the reinforced concrete beam.

[0011] Furthermore, the anti-shear member is a plate-shaped member of 50×50×5 mm, and the distance between the anti-shear member and the screw hole is 0.5 m.

[0012] Furthermore, the diameter of the bolt hole is 22-26 mm.

[0013] A method for installing a large curtain wall without pre-buried keels, using the large curtain wall without pre-buried keel installation system of the present invention to install the main keel of the curtain wall, comprising the following steps: S01, first cast the reinforced concrete slab and the reinforced concrete beam, and before the concrete of the reinforced concrete beam solidifies, use PVC pipes to reserve bolt holes on the reinforced concrete slab at a position close to the edge of the beam, and implant a connecting rod (9) at the bottom of the reinforced concrete beam (2); S02. After the reinforced concrete beam solidifies, an upper end plate and a lower end plate are installed at the upper end and the lower end of the reinforced concrete beam respectively, and then the upper end plate and the lower end plate are connected by screws on both sides; S03, when the upper end plate and the lower end plate of the upper and lower adjacent reinforced concrete beams are installed, when the main keel of the curtain wall is installed, the main keel of the curtain wall is located between the two reinforced concrete beams corresponding to the upper and lower floors of the building, and the upper end of the main keel of the curtain wall is connected to the lower end plate located on the upper floor, and the lower end of the main keel of the curtain wall is connected to the upper end plate located on the lower floor; S04. When the main keel of the curtain wall is installed, proceed with the subsequent curtain wall installation process.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The large curtain wall pre-embedded keel installation system and installation method provided by the present invention, by installing the upper end plate and the lower end plate on the top and bottom of the reinforced concrete beam through screws, when the main keel of the curtain wall is installed, the main keel of the curtain wall is located between the two reinforced concrete beams corresponding to the upper and lower floors of the building, the upper end of the main keel of the curtain wall is connected to the lower end plate located on the upper floor, and the lower end of the main keel of the curtain wall is connected to the upper end plate located on the lower floor, thereby replacing the solution of pre-embedded parts required in the concrete of the main structure in the traditional curtain wall construction, overcoming the defects of the embedded parts in the traditional process hindering the installation of the concrete formwork and causing the embedded parts and the keel to be misaligned during the concrete vibration process, improving the efficiency, precision and quality of large curtain wall construction, and reducing construction costs and risks; 2. A connecting rod is implanted at the bottom of the reinforced concrete beam, and the lower end of the connecting rod is connected to the lower end plate, thereby improving the firmness of the lower end plate and ensuring the firmness of the connection between the lower end plate and the main keel of the curtain wall; 3. Two shear members are arranged on both sides of the lower end plate and attached to the inner and outer sides of the reinforced concrete beam to reduce the shear force of the curtain wall on the reinforced concrete beam and improve the shear strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the large curtain wall pre-buried keel-free installation system of the present invention; Figure 2 This is a schematic diagram of the connection between the upper end plate and the lower end plate of the present invention; Figure 3This is a schematic diagram of the cooperation between the shear member and the reinforced concrete beam of the present invention; Figure 4 It is a top view schematic diagram of the reinforced concrete beam of the present invention; Figure 5 This is a bottom view schematic diagram of the reinforced concrete beam of the present invention; In the figure: 1. main keel of curtain wall, 2. reinforced concrete beam, 3. reinforced concrete slab, 4. shear member, 5. upper end plate, 6. lower end plate, 7. screw, 8. nut, 9. connecting rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In the description of the invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0018] like Figure 1-5 As shown in the figure, large curtain walls are mainly used in high-rise and super high-rise buildings and large commercial complexes. Traditional curtain wall construction is to embed the required embedded parts in the concrete of the main structure and install the curtain wall keel on the embedded parts. However, there are disadvantages such as embedded parts hindering the installation of concrete formwork; embedded parts are easily displaced during concrete vibration, resulting in misalignment between embedded parts and keel installation; embedded parts are omitted, etc.

[0019] Based on this, the present embodiment discloses a large curtain wall pre-buried keel-free installation system, which mainly includes a reinforced concrete slab 3, a reinforced concrete beam 2, an upper end plate 5, a lower end plate 6 and a plurality of screws 7. The reinforced concrete beam 2 and the reinforced concrete slab 3 are cast in one piece, the reinforced concrete beam 2 is located at the outer end of the reinforced concrete slab 3, and the bottom surface of the reinforced concrete beam 2 is lower than the bottom surface of the reinforced concrete slab 3, so that the reinforced concrete beam 2 protrudes downward relative to the reinforced concrete slab 3 for a distance.

[0020] According to the installation position of the main keel of the curtain wall on the reinforced concrete beam 2, the upper end plate 5 and the lower end plate 6 are respectively installed on the top and bottom surfaces of the reinforced concrete beam 2, and a plurality of vertically distributed screws 7 are respectively arranged on the outer side and the inner side of the reinforced concrete beam 2. The upper and lower ends of the screws 7 located on the outer side of the reinforced concrete beam 2 are respectively connected to the upper end plate 5 and the lower end plate 6. The reinforced concrete slab 3 is processed with a vertically penetrating bolt hole at a position close to the inner side of the reinforced concrete beam 2. The diameter of the bolt hole is 22mm. The screw 7 located on the inner side of the reinforced concrete beam 2 passes through the bolt hole and connects the upper end plate 5 and the lower end plate 6 respectively. In order to improve the firmness of the connection between the screw 7 and the upper end plate 5 and the lower end plate 6, the upper end plate 5 and the lower end plate 6 are processed with corresponding screw holes at the connection position with the screw 7. The ends of the screw 7 pass through the screw holes and are fixedly connected by nuts 8.

[0021] Since the lower end plate is used to connect the upper end of the main keel of the curtain wall, in order to ensure firmness, a connecting rod 9 is implanted at the bottom of the reinforced concrete beam 2, and the lower end of the connecting rod 9 passes through the lower end plate 6 and is connected to the lower end plate 6. In order to improve the shear resistance with the main keel of the curtain wall, two shear members 4 are provided on both sides of the lower end plate 6, which are attached to the inner and outer sides of the reinforced concrete beam 2. The shear member 4 is a 50×50×5mm metal plate-shaped member. The shear member 4 and the screw holes on the lower end plate 6 are staggered along the length direction of the reinforced concrete beam 2, and the spacing between the shear member 4 and the screw hole can be controlled to be 0.5m.

[0022] The installation method of the large curtain wall pre-buried keel-free installation system described in this embodiment is as follows: S01, first cast the reinforced concrete slab and reinforced concrete beam, before the concrete of the reinforced concrete beam solidifies, use PVC pipes to reserve bolt holes on the reinforced concrete slab at the position close to the beam edge, and implant the connecting rod 9 at the bottom of the reinforced concrete beam 2; S02. After the reinforced concrete beam solidifies, an upper end plate and a lower end plate are installed at the upper end and the lower end of the reinforced concrete beam respectively, and then the upper end plate and the lower end plate are connected by screws on both sides; S03, when the upper end plate and the lower end plate of the upper and lower adjacent reinforced concrete beams are installed, when the main keel of the curtain wall is installed, the main keel of the curtain wall is located between the two reinforced concrete beams corresponding to the upper and lower floors of the building, and the upper end of the main keel of the curtain wall is connected to the lower end plate located on the upper floor, and the lower end of the main keel of the curtain wall is connected to the upper end plate located on the lower floor; S04. When the main keel of the curtain wall is installed, proceed with the subsequent curtain wall installation process.

[0023] This embodiment replaces the solution of pre-embedding the required embedded parts on the concrete of the main structure in traditional curtain wall construction, and overcomes the defects of embedded parts hindering the installation of concrete formwork and causing misalignment of embedded parts and keel installation during concrete vibration in traditional processes, thereby improving the efficiency, accuracy and quality of large-scale curtain wall construction and reducing construction costs and risks.

Claims

1. A large curtain wall pre-buried keel-free installation system, characterized in that: It comprises a reinforced concrete slab (3) and a reinforced concrete beam (2), wherein the reinforced concrete beam (2) is arranged at the outer end of the reinforced concrete slab (3), the bottom surface of the reinforced concrete beam is lower than the bottom surface of the reinforced concrete slab, and the top surface and bottom surface of the reinforced concrete beam (2) are respectively provided with an upper end plate (5) and a lower end plate (6); A plurality of vertically distributed screw rods (7) are respectively provided on the outer side and the inner side of the reinforced concrete beam (2), and the upper and lower ends of the screw rods (7) located on the outer side of the reinforced concrete beam (2) are respectively connected to the upper end plate (5) and the lower end plate (6); The reinforced concrete slab (3) is provided with a vertically penetrating bolt hole at a position close to the inner side of the reinforced concrete beam (2), and a screw rod (7) located on the inner side of the reinforced concrete beam (2) passes through the bolt hole and is respectively connected to the upper end plate (5) and the lower end plate (6); When installing the curtain wall main keel (1), the curtain wall main keel (1) is located between two reinforced concrete beams (2) corresponding to the upper and lower floors of the building, the upper end of the curtain wall main keel (1) is connected to the lower end plate (6) located on the upper floor, and the lower end of the curtain wall main keel (1) is connected to the upper end plate (5) located on the lower floor.

2. The large curtain wall pre-buried keel-free installation system according to claim 1 is characterized in that: The upper end plate (5) and the lower end plate (6) are both provided with screw holes at the connection positions with the screw rod (7), and the ends of the screw rod (7) pass through the screw holes and are fixedly connected by nuts (8).

3. The large curtain wall pre-buried keel-free installation system according to claim 1 is characterized in that: A connecting rod (9) is implanted at the bottom of the reinforced concrete beam (2), and the lower end of the connecting rod (9) passes through the lower end plate (6) and is connected to the lower end plate (6).

4. The large curtain wall pre-buried keel-free installation system according to claim 3 is characterized in that: Two shear-resistant parts (4) are provided on both sides of the lower end plate (6) and are attached to the inner and outer sides of the reinforced concrete beam (2); the shear-resistant parts (4) and the screw holes on the lower end plate (6) are staggeredly distributed along the length direction of the reinforced concrete beam (2).

5. The large curtain wall pre-buried keel-free installation system according to claim 4 is characterized in that: The anti-shear member (4) is a plate-shaped member of 50×50×5 mm, and the distance between the anti-shear member (4) and the screw hole is 0.5 m.

6. The large curtain wall pre-buried keel-free installation system according to any one of claims 1 to 5, characterized in that: The diameter of the bolt hole is 22-26 mm.

7. A method for installing a large curtain wall without pre-buried keels, characterized in that: The large curtain wall pre-buried keel installation system according to claim 4 is used to install the main keel of the curtain wall, which comprises the following steps: S01, first cast the reinforced concrete slab and the reinforced concrete beam, and before the concrete of the reinforced concrete beam solidifies, use PVC pipes to reserve bolt holes on the reinforced concrete slab at a position close to the edge of the beam, and implant a connecting rod (9) at the bottom of the reinforced concrete beam (2); S02. After the reinforced concrete beam solidifies, an upper end plate and a lower end plate are installed at the upper end and the lower end of the reinforced concrete beam respectively, and then the upper end plate and the lower end plate are connected by screws on both sides; S03, when the upper end plate and the lower end plate of the upper and lower adjacent reinforced concrete beams are installed, when the main keel of the curtain wall is installed, the main keel of the curtain wall is located between the two reinforced concrete beams corresponding to the upper and lower floors of the building, and the upper end of the main keel of the curtain wall is connected to the lower end plate located on the upper floor, and the lower end of the main keel of the curtain wall is connected to the upper end plate located on the lower floor; S04. When the main keel of the curtain wall is installed, proceed with the subsequent curtain wall installation process.

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