High-altitude cantilever formwork structure

Abstract

The utility model provides a high-altitude overhanging formwork structure. The high-altitude overhanging formwork structure comprises a wall body. The fixing frame is arranged on one side of the wall body; the supporting keel is arranged on the fixing frame; the formwork is arranged on the supporting keel, and a pouring cavity is formed in the formwork. Through the arrangement of the first grillage and the second grillage, concrete is poured into the first grillage and the second grillage to form an overhanging formwork structure, an operation platform can be provided for constructors, protection can be formed, a protection frame body does not need to be installed on the outer side, construction efficiency is improved, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a high-altitude cantilever formwork structure. Background Technology

[0002] In high-rise building construction, when pouring high-altitude concrete structures (such as transfer floors and large cantilever structures), high-altitude steel cantilever formwork systems can provide stable support. For example, for large-span transfer beams or large cantilever concrete slabs, a huge self-weight is generated during the pouring process. The steel cantilever formwork system acts like a pair of "powerful hands," transferring the weight of the formwork and concrete to the main building structure through components such as steel cantilever beams, ensuring that the formwork will not deform or collapse due to the weight during concrete pouring.

[0003] In addition to the weight of the concrete itself, it can also withstand various live loads during construction. These include the movement of construction workers on the formwork, the weight of operating equipment (such as vibrators), and the weight of stacked building materials (such as reinforcing bars and embedded parts), providing a safe operating platform for construction. Currently, protective scaffolding needs to be erected outside the cantilevered formwork at heights, which is not only time-consuming and labor-intensive but also very costly. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] To address the aforementioned problems, this application provides a high-altitude cantilever formwork structure, comprising:

[0006] Wall body;

[0007] A fixing frame is provided on one side of the wall body;

[0008] A supporting keel is provided, which is mounted on the fixing frame;

[0009] A template is set on the supporting keel, and a casting cavity is opened in the template.

[0010] Optionally, the template includes:

[0011] A first plate frame is disposed on the supporting keel, and a first cavity is formed on the first plate frame;

[0012] The second board frame is vertically mounted on the first board frame and located on the side of the first board frame away from the wall body. The second board frame has a second cavity that can be opened and closed.

[0013] Optionally, the second frame is a rectangular frame.

[0014] Optionally, the mounting bracket includes:

[0015] A first fixing plate is disposed on one side of the wall body;

[0016] The second fixing plate is vertically disposed on the first fixing plate, and the supporting keel is disposed on the second fixing plate.

[0017] Optionally, the mounting bracket further includes:

[0018] A connecting rib is provided between the first fixing plate and the second fixing plate.

[0019] Optionally, the mounting bracket further includes:

[0020] A connector that passes through the first fixing plate and the second fixing plate and connects to the wall body.

[0021] Optionally, the connector is a bolt.

[0022] Optionally, the supporting keel is spaced apart on the second fixing plate.

[0023] Beneficial effects

[0024] The high-altitude cantilever formwork structure provided in the embodiments of this utility model is a cantilever formwork structure formed by pouring concrete into the first and second plates after setting up the first and second plates. It can not only provide an operating platform for construction personnel, but also form protection. There is no need to install a protective frame on the outside, which improves construction efficiency and saves costs. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present utility model;

[0026] Figure 2 This is a structural diagram of the present invention after concrete pouring.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1. Wall body; 2. Fixing frame; 21. First fixing plate; 22. Second fixing plate; 23. Connecting rib; 24. Connector; 3. Supporting keel; 4. Formwork; 41. First board frame; 42. Second board frame. Detailed Implementation

[0029] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See also Figures 1 to 2As shown, according to an embodiment of this application, a high-altitude cantilever formwork structure is provided, comprising:

[0031] Wall body 1;

[0032] Fixing frame 2, the fixing frame 2 is disposed on one side of the wall body 1;

[0033] Support keel 3, which is mounted on the fixing frame 2;

[0034] Template 4 is set on the supporting keel 3, and a casting cavity is opened in the template 4.

[0035] The high-altitude cantilever formwork structure provided in this embodiment uses the wall body 1 as the foundation for the entire structure. It is constructed with materials that meet the requirements for building strength and stability, such as reinforced concrete. Its structure is determined according to the overall building plan and load-bearing requirements, possessing excellent vertical load-bearing capacity and structural integrity. A fixing frame 2 is installed on one side of the wall body 1. The fixing frame 2 is made of high-strength metal materials, such as structural steel or steel pipes, and is tightly connected to the wall body 1 through welding, bolting, or other stable connection methods. The structural form of the fixing frame 2 is precisely designed based on the span, height, and load of the cantilever formwork. Its reasonable layout ensures that it can provide stable and uniform support points for the subsequent supporting joists 3, effectively dispersing various forces during construction and preventing structural instability due to excessive local stress.

[0036] The supporting keel 3 is installed on the fixed frame 2, and its material is also selected from high-strength, rigid metal materials, such as aluminum alloy or light steel keel. The shape and size of the supporting keel 3 are customized according to the size, shape and construction process requirements of the formwork 4, and can be rectangular, trapezoidal or other special shapes. The supporting keel 3 and the fixed frame 2 adopt reliable connection methods, such as slot connection, bolt fastening, etc., to ensure that no displacement or loosening occurs during construction. The spacing of the supporting keel 3 on the fixed frame 2 must meet the load-bearing requirements of the formwork 4, ensuring that the formwork 4 will not deform or crack due to uneven stress during concrete pouring, while also considering the convenience of construction operation and the control of material costs.

[0037] Template 4 is set on the supporting keel 3. It is made of high-quality template material, such as plywood or steel template 4, with good flatness and smoothness, which can ensure the appearance quality of the concrete structure after pouring. The template 4 has a pouring cavity, the shape and size of which match the concrete component to be poured. Its inner wall is specially treated, such as by applying a release agent, so that it can be easily demolded after the concrete has solidified, and at the same time, it prevents the concrete from sticking to the template 4 and affecting the reuse of the template 4. During construction, after pouring concrete into the template 4, a cantilevered formwork structure is formed. This structure not only provides a stable and safe operating platform for construction workers, allowing them to perform operations such as rebar tying and concrete pouring, but its own structural characteristics also provide effective protection. There is no need to install a separate protective frame on the outside, avoiding the cumbersome procedures and material consumption during the installation and dismantling of the protective frame, which greatly improves construction efficiency, reduces construction costs, and meets the requirements of the construction industry for high-altitude cantilevered formwork structures that are efficient, safe, and economical.

[0038] The template 4 includes:

[0039] A first plate frame 41 is disposed on the supporting keel 3, and a first cavity is formed on the first plate frame 41;

[0040] The second plate frame 42 is vertically arranged on the first plate frame 41 and located on the side of the first plate frame 41 away from the wall body 1. The second plate frame 42 has a second cavity that can be opened and closed.

[0041] In this technical solution, the template 4 includes a first frame 41 and a second frame 42. The first frame 41 is mounted on the supporting keel 3 and is made of a sturdy, durable, and flexible material, such as high-quality plywood or composite wood board. It is tightly fixed to the supporting keel 3 by means of bolts, nails, or slots to ensure that it will not shift or deform under the pressure of concrete pouring. The first cavity opened on the first frame 41 has a shape and size designed according to the design requirements of the cantilever structure and the concrete pouring process. It can be rectangular, trapezoidal, or other irregular shapes. The inner wall of the first cavity is smooth and flat, which helps the concrete to be evenly distributed and flowed within it, reduces the generation of voids and air bubbles inside the concrete, and improves the density and strength of the concrete structure.

[0042] The second frame 42 is vertically mounted on the first frame 41 and located on the side of the first frame 41 away from the wall body 1. The second frame 42 and the first frame 41 are joined together, and a square timber is used for central connection and fixation below the joint. The second cavity and the first cavity together construct a complete concrete pouring space, allowing the concrete to fully solidify and form a cantilevered formwork structure with sufficient strength and stability. During the concrete pouring process, the formwork 4 formed by the first frame 41 and the second frame 42 can effectively withstand the lateral pressure and self-weight pressure of the concrete, and evenly transfer these pressures to the supporting keel 3 and the fixing frame 2, ensuring the safety and reliability of the entire cantilevered formwork structure during construction, and meeting the strict requirements of structural strength, stability and functionality of the formwork 4 for the construction of high-altitude cantilevered parts of the building.

[0043] The second plate frame 42 is a rectangular frame.

[0044] In this embodiment, by setting the second plate frame 42 as a rectangular frame, concrete can be poured into the second plate frame 42 to form a vertical concrete wall on one side of the wall body 1, thereby protecting the construction personnel.

[0045] The fixing frame 2 includes:

[0046] The first fixing plate 21 is disposed on one side of the wall body 1;

[0047] The second fixing plate 22 is vertically disposed on the first fixing plate 21, and the supporting keel 3 is disposed on the second fixing plate 22.

[0048] In this technical solution, the fixing frame 2 includes a first fixing plate 21 and a second fixing plate 22. The first fixing plate 21 is tightly attached to one side of the wall body 1 and is made of thick and high-strength metal plate, such as steel plate. It is firmly fixed to the wall body 1 through reliable connection methods such as chemical anchors, expansion bolts, or pre-embedded bolts. The area of ​​the first fixing plate 21 is designed according to the load borne by the cantilever formwork structure and the structural characteristics of the wall body 1, ensuring that it can evenly distribute the pressure from the supporting keel 3 and the formwork 4 to the wall body 1, avoiding damage to the wall body 1 or connection failure due to excessive local pressure. When installing the first fixing plate 21, the surface of the wall body 1 needs to be pre-treated, such as cleaning, leveling, and drilling, to ensure the tightness and stability of the bolt connection. After the bolts are installed, the connection part is sealed to prevent rainwater, air, and other corrosive factors from damaging the connection structure.

[0049] The second fixing plate 22 is vertically mounted on the first fixing plate 21, and its material matches that of the first fixing plate 21, also using high-strength metal. The connection between the second fixing plate 22 and the first fixing plate 21 is achieved through welding, bolting, or a special connector 24, ensuring precise vertical angles and a secure connection. High-quality welding processes are required to ensure full, defect-free welds; bolted connections require precise control of bolt spacing, specifications, and tightening torque to ensure connection strength. The height of the second fixing plate 22 is determined based on the design height of the cantilevered formwork structure and ease of construction. Its function is to provide a vertical support point for the supporting keel 3, converting the horizontal cantilever force into vertical pressure, which is then transmitted to the wall body 1 through the first fixing plate 21. The second fixing plate 22 is equipped with connection structures for installing the supporting keel 3, such as slots, bolt holes, or welding connections, allowing the supporting keel 3 to be stably installed on the second fixing plate 22 and easily adjusted and disassembled during construction. Through the reliable connection between the first fixing plate 21 and the second fixing plate 22, the fixing frame 2 provides a solid support skeleton for the high-altitude cantilever formwork structure, effectively ensuring the stability and safety of the entire structure during construction.

[0050] The fixing frame 2 also includes:

[0051] A connecting rib 23 is disposed between the first fixing plate 21 and the second fixing plate 22.

[0052] In this technical solution, the connecting rib 23 is used to enhance the connection strength and overall stability between the first fixing plate 21 and the second fixing plate 22. The connecting rib 23 is made of high-strength metal material, such as steel bars or structural steel, and its shape can be straight, L-shaped, T-shaped, or other geometric shapes that can effectively transmit force. The specific shape is selected according to the connection method and stress characteristics of the first fixing plate 21 and the second fixing plate 22.

[0053] The connecting ribs 23 can be arranged in various ways, such as being evenly distributed along the connection edge between the first fixing plate 21 and the second fixing plate 22, or being strategically placed at key stress-bearing locations. During the connection process, reliable connection methods such as welding, bolting, or riveting are used between the connecting ribs 23 and the first fixing plate 21 and the second fixing plate 22. When welding, ensure that the quality and length of the weld meet the strength requirements so that the connecting ribs 23 can fully withstand and transmit the forces from the two fixing plates; for bolted connections, ensure that the bolt specifications, strength grade, and tightening torque meet the design standards to prevent loosening during use.

[0054] The number of connecting ribs 23 is determined based on the size of the fixed frame 2 and the load borne by the cantilevered formwork structure. Generally, for fixed frames 2 with larger dimensions and heavier loads, a larger number of connecting ribs 23 are required to ensure sufficient strength and stability. Through the reinforcement effect of the connecting ribs 23, a more stable integral structure is formed between the first fixed plate 21 and the second fixed plate 22, which can better resist various complex forces generated during concrete pouring, such as horizontal thrust, vertical pressure, and bending moment. This not only effectively prevents deformation and damage to the fixed frame 2 itself, but also provides a more reliable support platform for the supporting keel 3, ensuring the safety and reliability of the high-altitude cantilevered formwork structure throughout the entire construction process.

[0055] The fixing frame 2 also includes:

[0056] Connector 24 passes through the first fixing plate 21 and the second fixing plate 22 and is connected to the wall body 1.

[0057] In this technical solution, the connection between the fixing frame 2 and the wall body 1 is made more stable by the setting of the connector 24. The connector 24 is made of high-strength metal material, such as high-strength bolts or specially made anchors.

[0058] The connector 24 passes through the first fixing plate 21 and the second fixing plate 22 and connects to the wall body 1. Corresponding through holes are provided on the first fixing plate 21 and the second fixing plate 22. The diameter of these through holes is tightly fitted with the outer diameter of the connector 24, ensuring that the connector 24 can pass smoothly and that there will not be excessive gaps after installation, thus guaranteeing the tightness and stability of the connection. On the wall body 1, corresponding anchoring structures or threaded holes are pre-set according to the type of connector 24 and the connection requirements. For example, if a high-strength bolt is used as the connector 24, a nut can be pre-embedded in the wall body 1 or a threaded sleeve can be installed; if an anchor bolt is used, holes need to be drilled and enlarged on the wall body 1 to meet the anchoring requirements.

[0059] When installing connector 24, the torque or anchoring force required by the design must be strictly followed. For high-strength bolts, use a professional torque wrench to tighten them to the specified torque value, ensuring that the preload of the bolts is uniform and sufficient, so that the first fixing plate 21, the second fixing plate 22 and the wall body 1 are tightly fitted together to form an integral structure that can effectively transfer and bear various loads. For anchor bolts, install them according to the specified anchoring process, such as injecting anchoring adhesive, inserting the anchor bolts and ensuring that they cure within the specified time, so that the anchor bolts form a firm anchoring connection with the wall body 1. Through the reliable connection of connector 24, the fixing frame 2 can be stably attached to the wall body 1, providing a solid support foundation for supporting the keel 3 and formwork 4, effectively resisting complex loads such as horizontal forces, vertical forces and bending moments generated during concrete pouring, and ensuring the safety and reliability of the high-altitude cantilever formwork structure during construction.

[0060] The connector 24 is a bolt.

[0061] The supporting keel 3 is spaced apart on the second fixing plate 22.

[0062] In this technical solution, the supporting keel 3 is spaced out on the second fixed plate 22, providing sufficiently uniform support force to the formwork 4. This ensures that the formwork 4 will not deform or crack due to uneven local stress during concrete pouring, while also considering material cost and construction convenience. Generally, for smaller-sized and lighter-loaded cantilevered formwork structures, the spacing of the supporting keel 3 can be relatively large; while for larger-sized and heavier-loaded structures, the spacing needs to be reduced to enhance the support effect. For example, in the formwork of cantilevered balconies in some small buildings, the spacing of the supporting keel 3 may be set between 30-50 cm; while in the formwork of large-span cantilevered structures in large commercial buildings, the spacing may be reduced to 20-30 cm. The supporting keel 3 is made of materials with high strength and good rigidity, such as light steel keel or aluminum alloy keel, and its shape can be C-shaped, U-shaped, or rectangular, etc., depending on the requirements of the cantilevered formwork structure.

[0063] The connection between the supporting keel 3 and the second fixed plate 22 is firm and reliable. It can be achieved through welding, bolting, or a dedicated slot connection. When welding, the weld quality must be strictly controlled to ensure that the weld length, height, and strength meet requirements. For bolted connections, appropriate bolt specifications must be selected and tightened to the specified torque to prevent loosening. The slot connection method facilitates installation and disassembly and ensures the horizontal stability of the supporting keel 3. During construction, the supporting keel 3 is first installed on the second fixed plate 22 at predetermined intervals, and then the formwork 4 is laid. This interval arrangement of the supporting keel 3 ensures sufficient strength and stability while making rational use of materials, improving construction efficiency, and meeting the various requirements of high-altitude cantilever formwork support systems in building construction. This further enhances the practicality and economy of the high-altitude cantilever formwork structure of this invention, providing a strong guarantee for the smooth progress of construction projects.

[0064] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0066] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high cantilever formwork structure, characterized in that, Include: Wall body (1); Fixed frame (2), the fixed frame (2) is arranged on one side of the wall body (1); Supporting joist (3), the supporting joist (3) is arranged on the fixed frame (2); Formwork (4), the formwork (4) is arranged on the supporting joist (3), and the formwork (4) is internally provided with pouring cavity; The formwork (4) includes: First plate frame (41), the first plate frame (41) is arranged on the supporting joist (3), and the first plate frame (41) is internally provided with first cavity; Second plate frame (42), the second plate frame (42) is vertically arranged on the first plate frame (41), and is located on the side, away from the wall body (1), of the first plate frame (41), and the second plate frame (42) is internally provided with second cavity; The second plate frame (42) is rectangular frame.

2. The high-altitude cantilever formwork structure according to claim 1, characterized in that, The fixed frame (2) includes: First fixed plate (21), the first fixed plate (21) is arranged on one side of the wall body (1); Second fixed plate (22), the second fixed plate (22) is vertically arranged on the first fixed plate (21), and the supporting joist (3) is arranged on the second fixed plate (22).

3. The high altitude cantilever formwork structure according to claim 2, wherein, The fixed frame (2) further includes: Connecting rib (23), the connecting rib (23) is arranged between the first fixed plate (21) and the second fixed plate (22).

4. The high altitude cantilever formwork structure according to claim 3, wherein, The fixed frame (2) further includes: Connecting piece (24), the connecting piece (24) is connected with the wall body (1) by penetrating the first fixed plate (21) and the second fixed plate (22).

5. The high altitude cantilever formwork structure according to claim 4, wherein, The connecting piece (24) is bolt.

6. The high altitude cantilever formwork structure according to claim 5, wherein, The supporting joist (3) is spaced apart on the second fixed plate (22).

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