External scaffold for cantilever plate of frame structure

Abstract

The invention discloses an external scaffold for a cantilever plate of a frame structure, which comprises an external scaffold body, an external scaffold body, an internal scaffold body and an external scaffold body, and is arranged on the outer side of the cantilever plate of the frame structure; a first anchoring part which is vertically arranged is embedded in a structural beam on the outer side of the horizontal pull rod, the cantilever plate and the frame structure, the first anchoring part is connected to one end of the horizontal pull rod, and the other end of the horizontal pull rod is connected to the outer frame body; the upper ends of the diagonal draw bars on the bottom layer are connected to the first connecting positions of the inner vertical rods of the outer frame body and the horizontal draw bars on the first layer, second anchoring parts arranged on the outer side of the outer frame body are buried in the ground, and the lower ends of the diagonal draw bars on the bottom layer are arranged outwards and downwards in an inclined mode and connected to the second anchoring parts; the lower ends of the diagonal draw bars on the second layer are connected to the first connecting positions, and the upper ends of the diagonal draw bars on the second layer are obliquely arranged upwards and outwards and connected to the second connecting positions of the outer vertical rods of the outer frame body and the horizontal draw bars on the second layer. The problem that when an outer frame of a building structure encounters an irregular outer vertical face, a wall connecting piece is difficult to arrange is solved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to an external scaffolding for cantilever slabs in frame structures. Background Technology

[0002] With social progress and the development of the times, the construction industry is seeing a wide variety of buildings and increasingly diverse design forms, but this also brings challenges to construction technology. For example, consider a three-story building structure where only the outer side of the second-floor slab extends to form a cantilevered slab, with the second-floor slab at an elevation of 10 meters. During construction, the external scaffolding erected would be approximately 10 meters high, resulting in a total scaffolding height of around 10 meters. Furthermore, because the first-floor slab lacks a cantilevered slab, the structure is recessed, making it difficult to install wall ties on the external scaffolding. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a new type of external scaffolding for cantilever slabs in frame structures is provided to solve the problem of difficulty in setting up wall ties when the external scaffolding of a building structure encounters an irregular facade.

[0004] To achieve the above objectives, an external scaffolding for cantilever slabs in a frame structure is provided, comprising: The external scaffold body is erected on the outside of the cantilever slab of the frame structure; The horizontal tie rod, the cantilever slab and the outer structural beam of the frame structure are embedded with vertically arranged first anchors, the first anchors are connected to one end of the horizontal tie rod, and the other end of the horizontal tie rod is connected to the outer frame body; The multi-layered diagonal bracing system has the upper end of the bottom layer diagonal bracing connected to the first connection point between the inner upright of the outer frame body and the first layer horizontal bracing. A second anchor is buried in the ground on the outside of the outer frame body. The lower end of the bottom layer diagonal bracing is set diagonally outward and downward and connected to the second anchor. The lower end of the second layer diagonal bracing is connected to the first connection point, and the upper end of the second layer diagonal bracing is set diagonally upward and outward and connected to the second connection point between the outer upright of the outer frame body and the second layer horizontal bracing.

[0005] Furthermore, the outer frame body is a disc-lock scaffold.

[0006] Furthermore, the end of the horizontal tie rod furthest from the first anchor is connected to the inner and outer uprights of the outer frame body.

[0007] Furthermore, the second anchor is connected to the bottom of the outer frame body via a horizontal connecting rod.

[0008] Furthermore, a fall protection net is provided on the outer side of the outer frame body.

[0009] Furthermore, the ground has a hardened layer, and the outer frame body is erected on the hardened layer.

[0010] This invention provides a construction method for external scaffolding at cantilever slabs of frame structures, comprising the following steps: An external scaffold body is erected on the outside of the cantilever slab of the frame structure; The first anchor in the structural beam on the outside of the frame structure is connected to the horizontal tie rod of the first layer and the outer frame body; The upper end of the bottom diagonal brace is connected to the first connection point between the inner upright of the outer frame body and the first-layer horizontal brace, and the lower end of the bottom diagonal brace is set diagonally outward and downward and connected to the second anchor on the outside of the outer frame body. Continue to erect the outer frame body upwards to the cantilever slab of the frame structure; Connect the horizontal tie rods of the second layer to the upper part of the outer frame body; The lower end of the second-layer diagonal brace is connected to the first connection point, and the upper end of the second-layer diagonal brace is set diagonally upward and outward and connected to the second connection point between the outer upright of the outer frame body and the second-layer horizontal brace.

[0011] The beneficial effect of this invention lies in the fact that the external scaffolding for cantilever slabs in frame structures uses a diagonal bracing method to solve the construction method where wall ties cannot be installed at the cantilever slab, thus overcoming the limitations of wall tie installation. The external scaffolding for cantilever slabs in frame structures of this invention establishes a horizontal connection between the scaffold body and the frame structure through horizontal tie rods. Multiple layers of diagonal tie rods transfer the horizontal load of the scaffolding to reliable parts of the main structure through diagonal force, replacing traditional wall ties perpendicular to the wall surface and solving the problem of "nowhere to install" wall ties in the cantilever slab area. Attached Figure Description

[0012] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the external scaffolding used at the cantilever slab of a frame structure according to an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the upper part of the external scaffolding used at the cantilever slab of a frame structure according to an embodiment of the present invention.

[0014] Figure label: 1. External scaffold body; 11. Inner uprights; 12. External uprights; 13. Scaffold boards; Horizontal tie rod 2, first anchor 21; Diagonal tie rod 3, second anchor 31, horizontal connecting rod 32, first connection a, second connection b; Frame structure 4, cantilever slab 41, structural beam 42; 5. Fall protection net. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] Reference Figure 1 and Figure 2 As shown, the present invention provides an external scaffold for the cantilever slab of a frame structure, comprising: an external scaffold body 1, a horizontal tie rod 2, and a diagonal tie rod 3.

[0018] In this embodiment, the outer frame body 1 is erected on the outside of the cantilever slab 41 of the frame structure 4.

[0019] As a preferred implementation method, the outer frame body 1 is a disc-lock scaffold.

[0020] In a preferred embodiment, a hardened layer is formed on the ground, and the outer frame body 1 is erected on the hardened layer.

[0021] Before erecting the main scaffolding, the ground outside the frame structure is hardened to form a hardened layer. After the hardened layer is formed, the main scaffolding is erected on it. The main scaffolding is erected layer by layer from bottom to top.

[0022] In this embodiment, the frame structure has at least two floors. The outer side of the first-floor slab does not form a cantilever slab, while the outer side of the second-floor slab does. Therefore, the external scaffold cannot be effectively connected to the frame structure at the point where it is erected on the first-floor slab.

[0023] Specifically, the cantilever slab 41 and the outer structural beam 42 of the frame structure 4 are equipped with vertically arranged first anchors 21. That is, the outer structural beam 42 of the first-floor frame structure 4 is equipped with vertically arranged first anchors 21, and the cantilever slab 41 of the second-floor frame structure 4 is equipped with vertically arranged first anchors 21.

[0024] The first anchor 21 is connected to one end of the horizontal tie rod 2. The other end of the horizontal tie rod 2 is connected to the outer frame body 1.

[0025] The diagonal bracing 3 has multiple layers. The upper end of the bottom layer of diagonal bracing 3 is connected to the first connection point a between the inner upright 11 of the outer frame body 1 and the first layer of horizontal bracing 2.

[0026] A second anchor 31 is embedded in the ground and installed on the outside of the outer frame body 1. The lower end of the bottom diagonal tie rod 3 is installed diagonally outward and downward and connected to the second anchor 31.

[0027] The lower end of the second-layer diagonal brace 3 is connected to the first connection point a. The upper end of the second-layer diagonal brace 3 is set diagonally upward and outward and is connected to the second connection point b between the outer upright 12 of the outer frame body 1 and the second-layer horizontal brace 2.

[0028] In a preferred embodiment, the end of the horizontal tie rod 2 that is away from the first anchor 21 is connected to the inner upright 11 and the outer upright 12 of the outer frame body 1.

[0029] In this embodiment, the first anchor is vertically embedded in the cantilever slab or structural beam. The horizontal tie rod is connected to the first anchor and the external scaffold body via fasteners.

[0030] The scaffold body consists of two rows of uprights, namely inner uprights and outer uprights. One end of the horizontal tie rod is connected to the inner and outer uprights of the scaffold body via fasteners.

[0031] See Figure 1 As shown, the second anchor 31 is connected to the bottom of the outer frame body 1 via a horizontal connecting rod 32.

[0032] See Figure 2 As shown, a fall protection net 5 is provided on the outer side of the outer frame body 1.

[0033] This invention provides a construction method for external scaffolding at cantilever slabs of frame structures, comprising the following steps: S1. An external scaffold body 1 is erected on the outside of the cantilever slab 41 of the frame structure 4.

[0034] S2. Connect the first anchor 21 and the outer frame body 1 in the structural beam 42 on the outside of the frame structure 4 to the horizontal tie rod 2 of the first floor.

[0035] S3. Connect the upper end of the bottom diagonal brace 3 to the first connection point a between the inner upright 11 of the outer frame body 1 and the first horizontal brace 2 of the first layer, and set the lower end of the bottom diagonal brace 3 obliquely outward and downward and connect it to the second anchor 31 on the outside of the outer frame body 1.

[0036] S4. Continue to erect the outer frame body 1 to the cantilever slab 41 of the frame structure 4.

[0037] S5. Connect the horizontal tie rod 2 of the second layer to the upper part of the outer frame body 1.

[0038] S6. Connect the lower end of the second-layer diagonal brace 3 to the first connection point a, and set the upper end of the second-layer diagonal brace 3 diagonally upward and outward and connect it to the second connection point b between the outer upright 12 of the outer frame body 1 and the second-layer horizontal brace 2.

[0039] Before construction, the construction area must be cleaned and tidy. A 150mm thick C25 reinforced pad layer should be installed as a hardening layer in the area where the poles are erected.

[0040] According to the structural requirements, measure the distance between the inner and outer uprights and the wall at the four corners of the building and mark them. Erect a one-step-high scaffold at each of the four corners according to the marks and use a plumb line for positioning. Place the base plate and foundation accurately on the positioning line; the base plate must be laid flat and not suspended in the air.

[0041] The external scaffolding body should be erected in accordance with the specifications and structural requirements, and the vertical deviation of the uprights should be controlled to be no more than 1 / 500 of the scaffolding height.

[0042] Because the main structure (frame structure) has cantilevered slabs, and the floor height generally exceeds two steps, diagonal bracing is required during the erection of the external scaffolding. The diagonal bracing uses ordinary steel pipes connected to the uprights with couplers, and must be connected to the horizontal tie rod couplers on the first anchor on the floor slab. Diagonal bracing is installed every three spans. The diagonal bracing should be installed close to the main nodes, with a deviation from the main nodes not exceeding 300mm, and a diamond arrangement is preferred.

[0043] The working level of the external scaffold is equipped with a 200mm high toe board along the entire length of the inner side of the outer uprights. The toe board is made of standardized steel. The two sides of the toe board are fastened to the uprights, and the bottom rests on the horizontal bar. The front faces the outside of the scaffold, and the front is consistent with the color of the adjacent fence. It is affixed with red and white diagonal stripes at an angle of 45°.

[0044] The working layer of the external scaffold body uses steel scaffold boards, which are fixed to the horizontal bars using matching clips.

[0045] The outer perimeter of the scaffold is covered with a dense safety net and a safety trap net.

[0046] The present invention provides a construction method for external scaffolding at cantilever slabs in frame structures, employing a diagonal bracing system to address the limitation of not being able to install wall ties at cantilever slabs, thus overcoming the restrictions on wall tie installation. The external scaffolding at cantilever slabs in frame structures establishes a horizontal connection between the scaffold body and the frame structure through horizontal tie rods. Multiple layers of diagonal tie rods transfer the horizontal load of the scaffolding (wind load, construction eccentric load, etc.) to reliable parts of the main structure (such as the core tube, internal floor slabs, etc.) through diagonal force transfer, replacing traditional wall ties perpendicular to the wall surface and solving the problem of "nowhere to install" wall ties in cantilever slab areas.

[0047] The diagonal tie rods mainly bear tensile forces, transforming the overturning moment and horizontal force on the frame into a tension force on the main structure, and transmitting it to the interior of the structure through embedded parts or connecting bases, forming a stable force flow path.

[0048] The diagonal bracing, together with the scaffold uprights, horizontal bars, and main structure, forms a triangular stabilizing unit, which significantly improves the scaffold's lateral stiffness and reduces its horizontal deformation under load. In addition, it disperses local stress, avoids the concentration of load on a few scaffold nodes, and allows the horizontal force to be transmitted more evenly to multiple tie points, thereby improving the overall load-bearing capacity of the scaffold.

[0049] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An external scaffolding for cantilever slabs in a frame structure, characterized in that, include: The external scaffold body is erected on the outside of the cantilever slab of the frame structure; The horizontal tie rod, the cantilever slab and the structural beam on the outer side of the frame structure are embedded with vertically arranged first anchors, the first anchors are connected to one end of the horizontal tie rod, and the other end of the horizontal tie rod is connected to the outer frame body; The multi-layered diagonal bracing system has the upper end of the bottom layer diagonal bracing connected to the first connection point between the inner upright of the outer frame body and the first layer horizontal bracing. A second anchor is buried in the ground on the outside of the outer frame body. The lower end of the bottom layer diagonal bracing is set diagonally outward and downward and connected to the second anchor. The lower end of the second layer diagonal bracing is connected to the first connection point, and the upper end of the second layer diagonal bracing is set diagonally upward and outward and connected to the second connection point between the outer upright of the outer frame body and the second layer horizontal bracing.

2. The external scaffolding for cantilever slabs of a frame structure according to claim 1, characterized in that, The external scaffold body is a disc-lock type scaffold.

3. The external scaffolding for cantilever slabs of a frame structure according to claim 1, characterized in that, The end of the horizontal tie rod furthest from the first anchor is connected to the inner and outer uprights of the outer frame body.

4. The external scaffolding for cantilever slabs of a frame structure according to claim 1, characterized in that, The second anchor is connected to the bottom of the outer frame body via a horizontal connecting rod.

5. The external scaffolding for cantilever slabs of a frame structure according to claim 1, characterized in that, The outer side of the scaffold body is equipped with a fall protection net.

6. The external scaffolding for cantilever slabs of a frame structure according to claim 1, characterized in that, The ground has a hardened layer, and the outer frame body is erected on the hardened layer.

7. A construction method for external scaffolding at cantilever slabs of a frame structure as described in any one of claims 1 to 6, characterized in that, Includes the following steps: An external scaffold body is erected on the outside of the cantilever slab of the frame structure; The first anchor in the structural beam on the outside of the frame structure is connected to the horizontal tie rod of the first layer and the outer frame body; The upper end of the bottom diagonal brace is connected to the first connection point between the inner upright of the outer frame body and the first-layer horizontal brace, and the lower end of the bottom diagonal brace is set diagonally outward and downward and connected to the second anchor on the outside of the outer frame body. Continue to erect the outer frame body upwards to the cantilever slab of the frame structure; Connect the horizontal tie rods of the second layer to the upper part of the outer frame body; The lower end of the second-layer diagonal brace is connected to the first connection point, and the upper end of the second-layer diagonal brace is set diagonally upward and outward and connected to the second connection point between the outer upright of the outer frame body and the second-layer horizontal brace.

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