Scaffold-free construction supporting structure for elevator shaft

Abstract

The utility model provides an elevator shaft scaffold-free construction supporting structure which comprises a side face supporting structure and a floor supporting structure, the side face supporting structure is arranged on the side face of a longitudinal building body supporting structure, the floor supporting structure is arranged on a floor slab of the floor, and an elevator shaft for containing an elevator is formed between the side face supporting structure and the floor supporting structure. A bottom sealing structure used for sealing the elevator shaft cavity of the floor is arranged between the side face supporting structure and the floor supporting structure. The structure reduces material investment, and is convenient to construct and high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a scaffold-free construction support structure for an elevator shaft. Background Art

[0002] Generally, the elevator of a building construction project is designed in the middle of the structure. During the main structure construction, the conventional practice is to set up a steel pipe scaffolding inside to serve as the formwork frame for the inner wall of the elevator and the material transfer channel. The construction is relatively time-consuming, and the entire frame needs to be dismantled before the later closure and elevator installation, which is a lot of work. In addition, during the foundation and main construction stages, the elevator shaft is mostly a "shear wall formwork + cavity" structure. In order to set up the shear wall formwork support platform,

[0003] To address the existing technical issues, a Chinese invention patent, patent number CN109457929A, entitled "A Rotatable Elevator Shaft Formwork Operating Platform and Construction Method thereof," discloses an elevator shaft formwork operating platform. While this method meets the requirements for shear wall formwork, as the elevator shaft rises, the space below the working floor becomes hollow, posing a safety hazard from falling. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model proposes an elevator shaft scaffolding-free construction support structure, which reduces material input, is convenient to construct and has high safety.

[0005] To achieve the above-mentioned purpose, the utility model provides a scaffolding-free construction support structure for an elevator shaft, which includes a side support structure and a floor support structure. The side support structure is arranged on the side of the longitudinal building support structure, and the floor support structure is arranged on the floor slab of the floor. An elevator shaft for accommodating the elevator is formed between the side support structure and the floor support structure, and a bottom closing structure for closing the elevator shaft cavity on the floor is provided between the side support structure and the floor support structure.

[0006] Furthermore, the side support structure includes a shear wall formwork vertically arranged on the side, and the floor support structure includes a beam formwork, and one end of the beam formwork close to the shear wall formwork is bent downward.

[0007] Furthermore, the bottom sealing structure includes a steel mesh connected between the shear wall formwork and the beam formwork, and the steel mesh is composed of a plurality of mutually perpendicular steel bars.

[0008] Furthermore, a number of wooden beams are laid on the steel mesh, and the wooden beams are fully covered with scaffolding boards. The scaffolding boards are fixed to the wooden beams by cement nails, and the edges of the scaffolding boards extend to above the beam formwork.

[0009] Furthermore, the spacing between the wooden beams is 200mm, and the cross-sectional specifications of the wooden beams are 40mm*90mm.

[0010] Furthermore, a sleeve is provided on the top of the shear wall formwork, which penetrates the thickness direction thereof. Short steel pipes are provided on both sides of the shear wall formwork, which cover the sleeve openings. Wedges are provided on the contact surfaces between the short steel pipes and the shear wall formwork, and a tension screw is provided passing through the sleeve, which also passes through the short steel pipe. A right-angle fastener for fixing the tension screw is provided on the outside of the short steel pipe.

[0011] The scaffolding-free construction support structure of the elevator shaft of the utility model reduces the input of materials such as steel pipes and fasteners, has the advantages of convenient construction and high safety performance, and can achieve convenient and fast construction in the early stage and safe and reliable use in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described and elaborated below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a cross-sectional view of the scaffold-free construction support structure of the elevator shaft in the preferred embodiment of the present invention.

[0014] Figure 2 It is a top view of the bottom closed structure.

[0015] Figure numerals: 1. Shear wall formwork; 2. Beam formwork; 31. Steel mesh; 32. Wooden beam; 33. Scaffolding board; 4. Casing; 5. Short steel pipe; 6. Wedge; 7. Tension screw. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be more clearly and completely explained below by describing the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, the preferred embodiment of the present invention's scaffold-free elevator shaft support structure includes side support structures and floor support structures. The side support structures are arranged on the sides of the longitudinal building support structure and are vertically mounted shear wall forms 1. The floor support structure is installed on the floor slab of that floor and is a beam form 2, with one end of the beam form 2 proximal to the shear wall form 1 bent downward. Concrete is poured between the beam form 2 and the shear wall form 1.

[0018] like Figure 1 As shown, a sleeve 4 is provided on the top of the shear wall formwork 1 which penetrates in the thickness direction thereof, and short steel pipes 5 are provided on both sides of the shear wall formwork 1 respectively. The short steel pipes 5 cover the opening of the sleeve 4, and wedges 6 are provided on the contact surfaces between the short steel pipe 5 and the shear wall formwork 1 respectively. A tension screw 7 is provided passing through the sleeve 4, and the tension screw 7 also passes through the short steel pipe 5. A right-angle fastener for fixing the tension screw 7 is provided on the outside of the short steel pipe 5.

[0019] like Figure 1 and Figure 2 As shown, the shear wall formwork 1 and the beam formwork 2 form an elevator shaft to accommodate the elevator. A bottom sealing structure is located between the shear wall formwork 1 and the beam formwork 2, enclosing the elevator shaft cavity on that floor. This bottom sealing structure includes a steel mesh 31 connected between the shear wall formwork 1 and the beam formwork 2. The steel mesh 31 is composed of several mutually perpendicular steel bars. Upon arrival, the steel bars are inspected and re-inspected. Once qualified, they are embedded according to the spacing on the design drawings. The embedding depth must be consistent with the design. The intersections of the steel bars are fully tied with wire, effectively connecting the individual bars into a single steel mesh 31.

[0020] like Figure 1 As shown, several wooden beams 32 are laid on the steel mesh 31. These beams are then covered with scaffolding boards 33, which are secured to the beams 32 with cement nails. The edges of the scaffolding boards 33 extend above the beam formwork 2 to prevent small materials such as screws from falling into the elevator shaft. The spacing between the wooden beams 32 is 200 mm, and the cross-section of the wooden beams 32 is 40 mm by 90 mm.

[0021] After the elevator shaft is completed on this level, the shear wall formwork 1 and beam formwork 2 are moved up to the working level. The scaffolding 33 laid on the steel mesh 31 is removed and sealed with discarded high-mesh safety nets or geotextiles. Two layers (no more than 10m) are hard-sealed with discarded formwork. Furthermore, considering that the elevator shaft is prone to falling objects such as safety nets, elevator protective doors are still used for sealing. After the main construction is completed, before the elevator is installed, the steel mesh 31 is cut downwards using a grinding wheel, starting from the top floor, to restore the elevator shaft cavity and prepare for indoor elevator installation.

[0022] The scaffolding-free construction support structure of the elevator shaft of the utility model reduces the input of materials such as steel pipes and fasteners, has the advantages of convenient construction and high safety performance, and can achieve convenient and fast construction in the early stage and safe and reliable use in the later stage.

[0023] The above-described specific embodiments merely describe preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, substitutions, and improvements to the technical solution of the present invention made by a person of ordinary skill in the art based on the textual description and accompanying drawings provided herein, without departing from the design concept and spirit of the present invention, shall fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. A scaffold-free construction support structure for an elevator shaft, characterized in that: The elevator comprises a side support structure and a floor support structure, wherein the side support structure is arranged on the side of the longitudinal building support structure, and the floor support structure is arranged on the floor slab. An elevator shaft for accommodating an elevator is formed between the side support structure and the floor support structure. A bottom closing structure for closing the elevator shaft cavity is provided between the side support structure and the floor support structure. The bottom closed structure comprises a steel mesh (31) connected between the shear wall formwork (1) and the beam formwork (2), wherein the steel mesh (31) is composed of a plurality of mutually perpendicular steel bars, a plurality of wooden beams (32) are laid on the steel mesh (31), and the wooden beams (32) are fully covered with scaffolding boards (33), and the scaffolding boards (33) are fixed to the wooden beams (32) by cement nails, and the edges of the scaffolding boards (33) extend above the beam formwork (2).

2. The scaffold-free construction support structure for an elevator shaft according to claim 1, characterized in that: The side support structure comprises a shear wall formwork (1) vertically arranged on the side, and the floor support structure comprises a beam formwork (2), wherein one end of the beam formwork (2) close to the shear wall formwork (1) is bent downward.

3. The scaffold-free construction support structure for an elevator shaft according to claim 2, characterized in that: The spacing between the wooden beams (32) is 200 mm, and the cross-sectional specifications of the wooden beams (32) are 40 mm*90 mm.

4. The scaffold-free construction support structure for an elevator shaft according to claim 2, characterized in that: The top of the shear wall formwork (1) is provided with a sleeve (4) penetrating in the thickness direction thereof, and short steel pipes (5) are provided on both sides of the shear wall formwork (1), and the short steel pipes (5) cover the opening of the sleeve (4). Wedges (6) are provided on the contact surfaces of the short steel pipe (5) and the shear wall formwork (1), and a tension screw (7) is provided passing through the sleeve (4), and the tension screw (7) also passes through the short steel pipe (5). A right-angle fastener for fixing the tension screw (7) is provided on the outer side of the short steel pipe (5).

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