A cantilevered scaffolding and construction method for irregular facade renovation.

Abstract

This invention discloses a cantilevered scaffolding and construction method for irregular facade renovation. The cantilevered scaffolding includes a cantilevered steel beam frame, a suspended steel frame, and a scaffolding structure. The cantilevered steel beam frame extends outward from the building. The suspended steel frame is set out on the exterior of the building facade, with a construction space reserved between it and the facade. The scaffolding structure is erected in the construction space, with its inner side erected between building structural layers and its outer side connected to the suspended steel frame. This invention utilizes the cantilevered steel beam frame as the installation foundation for the suspended steel frame, thereby enabling scaffolding to be erected at any height on the building. This avoids the drawbacks of erecting full-height scaffolding from the ground and also prevents damage to the building facade from wall ties during scaffolding erection. It achieves both the erection of a construction platform and the protection of the building facade.

Description

Technical Field

[0001] This invention relates to the field of building renovation and construction technology, specifically to a cantilevered scaffolding and construction method for the renovation of irregular facades. Background Technology

[0002] Many old buildings now require renovation to better adapt to existing business models. Renovation typically involves preserving the main structure while modifying the interior decoration and exterior facade. Interior decoration can usually be carried out using the building's structural layers, while exterior facade renovation requires scaffolding to create a construction platform. The conventional scaffolding used for facade renovation is full-span scaffolding. Whether renovating the entire facade or only the mid-rise and high-rise buildings, the scaffolding must be erected from the ground upwards. However, this method has drawbacks such as long construction periods, large space requirements, and significant environmental impact from bottom-up scaffolding, which also interferes with material transportation. This invention provides a cantilevered suspended scaffolding and construction method for irregularly shaped facade renovation to solve these problems. Summary of the Invention

[0003] This invention provides a cantilevered scaffolding and construction method for the renovation of irregular facades. The suspended steel frame is used as the foundation for scaffolding erection, enabling scaffolding to be erected as a construction platform above the middle floors of a building.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A cantilevered scaffolding for the renovation of an irregularly shaped facade includes a cantilevered steel beam frame, a suspended steel frame, and a scaffolding structure. The cantilevered steel beam frame is located at the top of the building and extends outward from the building. The suspended steel frame is set out on the exterior of the building facade in accordance with its shape, and a construction space is reserved between the suspended steel frame and the building facade. The suspended steel frame is suspended on the cantilevered steel beam frame. The scaffolding structure is erected in the construction space, with its inner side erected between the building structural layers and its outer side connected to the suspended steel frame.

[0006] Furthermore, the suspended steel frame includes a suspension frame, the top of which is connected to the cantilevered steel beam frame. The suspension frame includes suspension frame units, which are arranged vertically and continuously to form the suspension frame. The suspension frame units are arranged correspondingly to the building structure layers.

[0007] Furthermore, the hanging frame unit includes conformal keel and connecting rods. The conformal keel is horizontally arranged and located outside the building structure layer. The connecting rods are vertically spaced on the conformal keel and connect the conformal keel to the cantilever steel beam frame and connect adjacent conformal keels.

[0008] Furthermore, the suspended steel frame also includes a tie frame, the bottom end of which is connected to the foundation surface and the top end of which is connected to the bottom end of the suspended frame. The tie frame includes a tie rod and a connecting rod. The tie rod includes a lower tie rod, which is set on the ground and connected to the suspended frame through the connecting rod.

[0009] Furthermore, the tie rod also includes an upper tie rod, which is connected to the bottom end of the hanging frame via a connecting rod, and the lower tie rod is connected to the upper tie rod via a connecting rod.

[0010] Furthermore, the conformal keel is provided with stabilizing rods at both ends, and the stabilizing rods are connected to the building structure layer.

[0011] Furthermore, the scaffolding structure includes a base frame and a protective frame. The outer side of the base frame is mounted on the hanging frame, and the inner side is mounted on the building structure layer. The protective frame is installed in the hanging frame.

[0012] Furthermore, the cantilevered steel beam frame includes a steel frame and a ring beam. The steel frame includes horizontal beams and longitudinal beams, which are arranged alternately. The outer side of the horizontal beam extends outside the building. The ring beam is located at the outer end of the horizontal beam, connecting the outer ends of the horizontal beam into one unit.

[0013] Furthermore, the conformal keel and the connecting rod are connected by bolts.

[0014] A construction method for using cantilevered suspended scaffolding for the renovation of irregular facades includes the following steps:

[0015] S1, Installation of the cantilevered steel beam frame at the top of the building;

[0016] S2 involves prefabricating the components of the suspended steel frame, and then transferring them to the construction site together with the components of the scaffolding structure after prefabrication.

[0017] S3, install the suspended steel frame, and carry out the construction in the order of installation from top to bottom. When installing the suspended frame unit of each layer, first install the connecting rod, then lift the assembled conformal keel as a whole and connect it with the connecting rod, and connect the end of the conformal keel to the main building through the stabilizer bar, and then install the next layer of suspended frame unit.

[0018] S4. After the hanging bracket is installed, first fix the lower tie rod of the tie bracket to the foundation surface, and then use the connecting rod to connect the tie bracket to the hanging bracket to tie the hanging bracket and ensure the stability of the hanging bracket.

[0019] S5 involves erecting scaffolding structures in the construction space between the suspended steel frame and the building facade, layer by layer from bottom to top, with materials being transferred and construction work carried out from inside the building during the erection process.

[0020] S6. After the scaffolding structure is erected, the exterior facade of the building will be renovated.

[0021] S7. After the construction is completed, the scaffolding structure will be dismantled layer by layer from top to bottom.

[0022] S8. After the scaffolding structure is dismantled, the suspended steel frame is dismantled. First, the connection between the lower tie rod and the suspended frame is removed. Then, the suspended frame units are dismantled layer by layer from bottom to top until the suspended steel frame is completely dismantled.

[0023] The beneficial effects of this invention are as follows:

[0024] By using a cantilevered steel beam frame as the installation foundation for the suspended steel frame, the suspended steel frame can be suspended and hung. This suspended steel frame serves as the foundation for scaffolding erection, enabling scaffolding to be erected at any height within the building. This avoids the drawbacks of erecting full-scale scaffolding from the ground and also prevents damage to the building facade caused by wall ties during external scaffolding erection. It achieves both the erection of a construction platform and the protection of the building facade. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the hanging state of the suspended steel bars according to the present invention;

[0027] Figure 3 This is a schematic diagram showing the connection state between the suspended steel frame and the cantilevered steel beam frame of the present invention;

[0028] Figure 4 This is a schematic diagram showing the connection state between the hanging frame and the cantilevered steel beam frame of the present invention;

[0029] Figure 5 This is a schematic diagram showing the connection state between the hanging bracket and the tie bracket of the present invention;

[0030] Figure 6 This is a schematic diagram of the hanging bracket structure of the present invention.

[0031] Reference numerals: 1. Cantilevered steel beam frame; 11. Steel frame; 12. Ring beam; 2. Suspended steel frame; 21. Suspension frame; 211. Conformal keel; 212. Connecting rod; 213. Stabilizer bar; 22. Tie frame; 221. Tie rod. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] like Figure 1 As shown, there are two conventional types of scaffolding used in building facade construction: full-span scaffolding, which is erected directly from the bottom to cover the entire facade, and external scaffolding, which is erected on the facade using wall ties and can be erected from the middle of the building upwards. However, both types of scaffolding require wall ties to maintain structural stability, which can damage the facade. During facade renovation, the facade decoration cannot be damaged by these wall ties. Therefore, a type of scaffolding that does not rely on wall ties and does not affect the ground is needed as a construction platform. This invention provides a cantilevered suspended scaffolding for irregular facade renovation construction. It utilizes a cantilevered steel beam frame 1 as the installation foundation to achieve the cantilevered suspension of a suspended steel frame 2. The suspended steel frame 2 is suspended outside the building, and scaffolding is erected based on this frame. This allows scaffolding to be erected from any floor of the building, thus solving the renovation construction problems of the top and upper-middle floors of high-rise buildings. The cantilevered scaffolding used in this invention is more convenient and flexible to use than ground-mounted scaffolding. It can be erected from top to bottom to any floor and avoids impacting the ground. Compared with traditional cantilevered scaffolding, it will not damage the building facade and has the characteristics of good overall structural stability and high safety. In addition, it is suitable for building types with inconsistent vertical dimensions and can also be applied to building structures with irregular facades, which has the advantages of wide application and good applicability.

[0035] like Figure 1 , 2As shown, a cantilevered scaffolding for the renovation of an irregular facade includes a cantilevered steel beam frame 1, a suspended steel frame 2, and a scaffolding structure 3. The cantilevered steel beam frame 1 is located at the top of the building, with its exterior cantilevered outwards to serve as the foundation for the suspended steel frame 2 below. The suspended steel frame 2 is vertically suspended on the exterior of the building facade. The shape of the suspended steel frame 2 is similar to that of the building facade, thus forming a uniformly wide construction space with the building facade to serve as the erection space for the scaffolding structure 3. The top of the suspended steel frame 2 is connected to the cantilevered structure of the cantilevered steel beam frame 1. The scaffolding structure 3 is erected in the construction space, with its inner side erected between the building structural layers and its outer side connected to the suspended steel frame 2.

[0036] like Figure 4 As shown in Embodiment 1 of the present invention, the suspended steel frame 2 is provided with only a hanging frame 21. The top of the hanging frame 21 is connected to the cantilever steel beam frame 1 and is located below the cantilever steel beam frame 1. The hanging frame 21 is formed by connecting the hanging frame units that are correspondingly and continuously arranged vertically. The hanging frame units are arranged in accordance with the building structure layers, and a set of hanging frame units is set for each layer, from top to bottom up to the bottom layer of the floor where construction is required. Since the suspended steel frame 2 only has a suspension frame 21, and the suspension frame 21 is suspended, its structure is unstable and prone to swaying. Moreover, the load carried by the operation during construction will also cause structural instability. Therefore, in order to ensure the structural stability of the suspension frame 21, stabilizing rods 213 are set on both sides of the suspension frame unit. The stabilizing rods 213 are fixedly set at both ends of the conformal keel 211 and connected to the building structure, thereby firmly binding and fixing the suspension frame unit to the building structure, keeping the suspension frame unit in a stable state, avoiding swaying of the suspension frame unit during construction, and thus ensuring the stability and structural safety of the suspension frame 21.

[0037] like Figure 6 As shown, the hanging frame unit further includes conformal keel 211 and connecting rod 212. The conformal keel 211 is horizontally arranged and correspondingly arranged on the outside of the building structure layer. The inner side of the scaffolding structure 3 is erected on the floor slab between the building structure layers, and its outer side is erected on the conformal keel 211, thereby enabling the scaffolding structure 3 to be erected horizontally. The connecting rod 212 is vertically spaced on the conformal keel 211 to realize the hanging of the conformal keel 211. The connecting rod 212 is used to connect the conformal keel 211 to the cantilever steel beam frame 1 and to connect the conformal keel 211 of adjacent hanging frame units.

[0038] like Figure 3 , 4As shown in Figure 5, in Embodiment 2 of the present invention, in order to further increase the stability of the suspended steel frame 2 and prevent the middle part of the suspended steel frame 2 from shifting outward due to the influence of loads or external loads during construction, thus avoiding potential safety hazards during construction, a tie frame 22 is set at the bottom of the suspended frame 21. The tie frame 22 is used to tie the suspended steel frame 2, so that the suspended steel frame 2 is in a state of vertical tension, thereby preventing the middle part of the suspended steel frame 2 from shifting outward or deforming and displacing, and thus ensuring construction safety. The bottom end of the tie frame 22 is connected to the foundation surface, and its top end is connected to the bottom end of the hanging frame 21. The tie frame 22 includes tie rods 221 and connecting rods 212. The tie rods 221 include lower tie rods. The lower tie rods are set on the ground and connected to the hanging frame 21 through the connecting rods 212. After the lower tie rods are connected to the hanging frame 21 through the connecting rods 212, the hanging frame 21 is tightened to prevent deformation or outward displacement of its middle part, so that the distance between the hanging frame 21 and the building facade is constant and always in a stable state, thereby ensuring the stability of the scaffolding structure 3 erected on the hanging frame 21.

[0039] like Figure 5 As shown, the tie rod 221 further includes an upper tie rod, which is connected to the bottom end of the hanging frame 21 via a connecting rod 212, and the lower tie rod is connected to the upper tie rod via the connecting rod 212.

[0040] The specific construction of the tie frame 22 is set according to the building height or building structure. When the floor height of the bottom layer is relatively high, two tie rods, an upper tie rod and a lower tie rod, are set to enhance the structural stability. The upper tie rod strengthens the stability of the tie frame 22 by shortening the length of the connecting hanger 212 in the tie frame 22, thereby improving the stability of the tie. When the floor height of the bottom layer is relatively low, the length of the connecting hanger 212 in the tie frame 22 is also relatively short. Only the lower tie rod needs to be set to meet the tie requirements. It can be connected to the bottommost hanging frame unit through the connecting hanger 212. At this time, the overall structure has sufficient stability.

[0041] The tie-up frame 22 not only enhances the stability of the hanging frame 21 but also does not obstruct the passage of personnel and materials below. Compared to traditional full-span scaffolding, the tie-up frame 22 only serves a tying function, not a supporting function. Therefore, the widely spaced frame structure achieves the tying function without affecting the transfer of personnel and materials below. Furthermore, since the tie-up frame 22 only needs to provide tension, it can be installed not only on the ground but also on the roof, terrace, or lobby of the lower-level building, as long as the tying requirements are met.

[0042] like Figure 6As shown, furthermore, the conformal keel 211 is provided with stabilizing rods 213 at both ends, and the stabilizing rods 213 are connected to the building structure layer. The stabilizing rods 213 are detachably connected to the building structure layer, and are easy to disassemble after construction. Depending on the specific situation, they are connected to the building structure using wall ties or wall bolts.

[0043] Furthermore, the scaffolding structure 3 includes a base frame and a protective frame. The base frame is horizontally arranged, with its outer side erected on the hanging frame 21 and its inner side erected on the building structure layer, serving as the foundation for the construction platform. The protective frame is installed in the hanging frame 21 and plays a protective role.

[0044] Furthermore, the cantilevered steel beam frame 1 includes a steel frame 11 and a ring beam 12. The steel frame 11 includes horizontal beams and longitudinal beams, which are staggered to form the steel frame 11 located at the top of the building. The horizontal beams extend outside the building, and the ring beam 12 is located at the outer end of the horizontal beams, connecting all the horizontal beams and linking their outer ends together. The suspended steel frame 2 is connected to the outer end of the horizontal beams and is connected to the ring beam 12 at the curved surface. Since the suspended steel frame 2 is directly connected to the outer end of the horizontal beams via connecting rods 212, uneven load distribution may occur during construction. When the load is transferred to the horizontal beams through the connecting rods 212, different loads will cause a certain height difference between the outer ends of different horizontal beams. Since the length of the connecting rods 212 is consistent, if there is a difference in the height of the horizontal beams, stress concentration may occur in the suspended steel frame 2, which may even cause deformation of the overall structure, resulting in insufficient overall stability of the suspended steel frame 2 and posing a certain safety hazard. To ensure that the structure of the suspended steel frame 2 will not deform due to the height difference of the crossbeams above it, a ring beam 12 is set at the outer end of the crossbeams to connect all the crossbeams into one, thereby ensuring that there is no height difference between the crossbeams and that the overall structure of the suspended steel frame 2 will not be affected, thus improving structural safety. At the same time, due to the irregular shape of the building facade, the crossbeams cannot extend out at the curved surfaces, so the ring beam 12 is also used as a hanging point to achieve hanging connection at special locations.

[0045] Furthermore, the conformal keel 211 and the connecting rod 212 are connected by bolts, which facilitates disassembly and assembly, and can be reused to reduce costs.

[0046] Preferably, the conformal keel 211 is provided with a mounting base, and the connecting rod 212 is connected to the mounting base by bolts to achieve a detachable connection.

[0047] A construction method for using cantilevered suspended scaffolding for the renovation of irregular facades includes the following steps:

[0048] S1, Install the cantilevered steel beam frame 1 on the top of the building;

[0049] S2, prefabricate the components of the suspended steel frame 2, and after prefabrication, transfer them to the construction site together with the components of the scaffolding structure 3;

[0050] S3, install the suspended steel frame 2, and carry out the construction in the order of installation from top to bottom, layer by layer. When installing the suspended frame unit of each layer, first install the connecting rod 212, then lift the assembled conformal keel 211 as a whole and connect it with the connecting rod 212, and connect the end of the conformal keel 211 to the main building through the stabilizing rod 213, and then install the next layer of suspended frame unit.

[0051] S4. After the hanging bracket 21 is installed, first fix the lower tie rod of the tie frame 22 to the foundation surface, and then use the connecting rod 212 to connect the tie frame 22 and the hanging bracket 21 to tie the hanging bracket 21 and ensure the stability of the hanging bracket 21.

[0052] S5, the scaffolding structure 3 is erected in the construction space between the suspended steel frame 2 and the building facade, and is erected layer by layer from bottom to top. During the erection, materials are transferred and construction is carried out from inside the building.

[0053] S6, After the scaffolding structure 3 is erected, the exterior facade of the building will be renovated.

[0054] S7, After the construction is completed, the scaffolding structure 3 will be dismantled layer by layer from top to bottom;

[0055] S8. After the scaffolding structure 3 is dismantled, the suspended steel frame 2 is dismantled. First, the connection between the lower tie rod and the suspended frame 21 is removed. Then, the suspended frame units are dismantled layer by layer from bottom to top until the suspended steel frame 2 is completely dismantled.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cantilevered scaffolding for the renovation of irregularly shaped facades, characterized in that: The structure includes a cantilevered steel beam frame (1), a suspended steel frame (2), and a scaffolding structure (3). The cantilevered steel beam frame (1) is located on the top of the building and extends outward from the building. The suspended steel frame (2) is set out on the exterior of the building facade and a construction space is reserved between it and the building facade. The suspended steel frame (2) is suspended on the cantilevered steel beam frame (1). The scaffolding structure (3) is erected in the construction space, with its inner side erected between the building structural layers and its outer side connected to the suspended steel frame (2). The suspended steel frame (2) includes a hanging frame (21), the top of which is connected to the cantilever steel beam frame (1). The hanging frame (21) includes a hanging frame unit, which is arranged vertically and continuously to form the hanging frame (21). The hanging frame unit is arranged in relation to the building structure layer. The suspended steel frame (2) also includes a tie frame (22), the bottom end of which is connected to the foundation surface and the top end of which is connected to the bottom end of the hanging frame (21). The tie frame (22) includes a tie rod (221) and a connecting rod (212). The tie rod (221) includes a pull-down tie rod, which is set on the ground and connected to the hanging frame (21) through the connecting rod (212).

2. The cantilevered scaffolding for irregular facade renovation construction according to claim 1, characterized in that: The hanging frame unit includes conformal keel (211) and connecting rod (212). The conformal keel (211) is horizontally arranged and located outside the building structure layer. The connecting rod (212) is vertically spaced on the conformal keel (211) and connects the conformal keel (211) to the cantilever steel beam frame (1) and connects adjacent conformal keels (211).

3. The cantilevered scaffolding for irregular facade renovation construction according to claim 1, characterized in that: The tie rod (221) also includes an upper tie rod, which is connected to the bottom end of the hanging frame (21) via a connecting rod (212), and the lower tie rod is connected to the upper tie rod via a connecting rod (212).

4. The cantilevered scaffolding for irregular facade renovation construction according to claim 2, characterized in that: The conformal keel (211) is provided with stabilizing rods (213) at both ends, and the stabilizing rods (213) are connected to the building structure layer.

5. The cantilevered scaffolding for irregular facade renovation construction according to claim 1, characterized in that: The scaffolding structure (3) includes a base frame and a protective frame. The outer side of the base frame is set on the hanging frame (21), and the inner side is set on the building structure layer. The protective frame is set in the hanging frame (21).

6. The cantilevered scaffolding for irregular facade renovation construction according to claim 1, characterized in that: The cantilever steel beam frame (1) includes a steel frame (11) and a ring beam (12). The steel frame (11) includes a crossbeam and a longitudinal beam. The crossbeam and the longitudinal beam are arranged alternately. The outer side of the crossbeam extends out of the building. The ring beam (12) is located at the outer end of the crossbeam and connects the outer ends of the crossbeam into one piece.

7. The cantilevered scaffolding for irregular facade renovation construction according to claim 2, characterized in that: The conformal keel (211) and the connecting rod (212) are connected by bolts.

8. A construction method for cantilevered scaffolding used in the renovation of irregularly shaped facades, characterized in that, Includes the following steps: S1, the installation of the cantilevered steel beam frame (1) is carried out at the top of the building; S2, prefabricate the components of the suspended steel frame (2), and after the prefabrication is completed, transfer them to the construction site together with the components of the scaffolding structure (3); S3, install the hanging steel frame (2) in the order of installation from top to bottom. When installing the hanging frame unit of each layer, first install the connecting rod (212), then lift the assembled conformal keel (211) and connect it with the connecting rod (212), and connect the end of the conformal keel (211) to the main building through the stabilizing rod (213), and then install the next layer of hanging frame unit. S4. After the hanging frame (21) is installed, first fix the lower tie rod of the tie frame (22) to the foundation surface, and then use the connecting rod (212) to connect the tie frame (22) and the hanging frame (21) to tie the hanging frame (21) and ensure the stability of the hanging frame (21). S5, the scaffolding structure (3) is erected in the construction space between the suspended steel frame (2) and the building facade, and is erected layer by layer from bottom to top. During the erection, materials are transferred and construction is carried out from inside the building. S6, After the scaffolding structure (3) is erected, the exterior facade of the building will be renovated; S7. After the construction is completed, the scaffolding structure is dismantled layer by layer from top to bottom (3). S8. After the scaffolding structure (3) is dismantled, the hanging steel frame (2) is dismantled. First, the connection between the lower tie rod and the hanging frame (21) is removed, and then the hanging frame unit is dismantled layer by layer from bottom to top until the hanging steel frame (2) is completely dismantled.

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