Formwork supporting structure for cavity overhanging part of wind power mixed tower foundation

Abstract

A formwork supporting structure for a cavity overhanging part of a wind power mixed tower foundation comprises a PVC pipe, an upper supporting steel pipe, a lower supporting steel pipe and a bottom steel plate, the PVC pipe is arranged in concrete below the cavity overhanging part of the wind power mixed tower foundation, the bottom steel plate is fixed to a bottom plate of the PVC pipe, the lower supporting steel pipe is sleeved with the PVC pipe, and the upper supporting steel pipe and the lower supporting steel pipe are fixedly connected through the bottom steel plate. An upper supporting steel pipe is inserted into the top of the lower supporting steel pipe, and an adjustable support is installed on the upper supporting steel pipe and supported at the bottom of the formwork. Steel pipes are replaced by PVC pipes, the usage amount of traditional supporting steel pipes is reduced, the steel pipes can be repeatedly used, the requirement for new materials is reduced, the upper supporting steel pipe and the lower supporting steel pipe are of a socket type supporting structure, the steel pipes only need to be taken down in a segmented mode in the form stripping process, saw cutting of the steel pipes is not needed, form stripping operation is simplified, and working efficiency is improved; the bottom steel plate not only improves the supporting force, but also effectively replaces a traditional water stop steel plate, and the construction quality is further improved.

Description

Technical Field

[0001] This utility model relates to the field of wind power hybrid tower foundation construction technology, and in particular to a template support structure for the cantilevered part of the cavity of a wind power hybrid tower foundation. Background Technology

[0002] In the construction of wind turbine hybrid tower foundations, the cantilevered structure of the cavity section requires special support. Traditional support methods typically use steel pipes. After the concrete below the cantilever section is poured, part of the formwork support steel pipes will be embedded in the concrete. During the subsequent formwork removal process, the support steel pipes need to be cut, increasing the workload and time of dismantling. At the same time, a large number of steel pipes cannot be recycled, significantly increasing construction costs. Summary of the Invention

[0003] This utility model aims to address the shortcomings of existing technologies by providing a template support structure for the cantilevered portion of the cavity in a wind power hybrid tower foundation.

[0004] To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A formwork support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity includes a PVC pipe, an upper support steel pipe, a lower support steel pipe, and a bottom steel plate. The PVC pipe is installed in the concrete below the cantilevered portion of the wind turbine hybrid tower foundation cavity. The bottom steel plate is fixed to the bottom plate of the PVC pipe. The lower support steel pipe is inserted into the PVC pipe. The upper support steel pipe is inserted into the top of the lower support steel pipe. Adjustable supports are installed on the upper support steel pipe and are supported at the bottom of the formwork.

[0006] The lower supporting steel pipe is provided with a socket at its top.

[0007] The diameter of the socket of the lower support steel pipe is 48mm and the wall thickness is 5mm. The outer diameter of the rest of the lower support steel pipe is 38mm and the wall thickness is 3mm.

[0008] The outer diameter of the upper supporting steel pipe is 38mm and the wall thickness is 3mm.

[0009] The bottom steel plate has dimensions of 100mm × 100mm × 3mm.

[0010] The diameter of the PVC pipe is 50mm.

[0011] The length of the PVC pipe is the same as the thickness of the concrete below the cantilever section.

[0012] The beneficial effects of this utility model are as follows: This utility model uses PVC pipes instead of steel pipes, reducing the amount of traditional supporting steel pipes used. Moreover, the cost of PVC pipes is much lower than that of steel pipes, significantly reducing construction costs. The steel pipes can be reused, reducing the demand for new materials and meeting environmental protection requirements. The upper and lower supporting steel pipes adopt a socket-type support structure, which only requires removing the steel pipes in sections during demolding, eliminating the need to saw the steel pipes, simplifying the demolding operation, improving work efficiency, and saving labor and time. The bottom steel plate not only improves the supporting force but also effectively replaces the traditional water-stop steel plate, extending the seepage path, reducing the risk of water leakage, and further improving the construction quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall formwork support structure for the cantilevered part of the wind turbine foundation according to this utility model;

[0014] Figure 2 This is a schematic diagram showing the connection relationship between the upper support steel pipe and the lower support steel pipe of this utility model;

[0015] Figure 3 This is a schematic diagram of the socket of the lower support steel pipe of this utility model;

[0016] In the diagram: 1-PVC pipe; 2-Upper supporting steel pipe; 3-Lower supporting steel pipe; 31-Socket; 4-Bottom steel plate; 5-Adjustable support; 6-Formwork;

[0017] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] A formwork support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity includes a PVC pipe 1, an upper support steel pipe 2, a lower support steel pipe 3, and a bottom steel plate 4. The PVC pipe 1 is installed in the concrete below the cantilevered portion of the wind turbine hybrid tower foundation cavity. The bottom steel plate 4 is fixed to the bottom of the PVC pipe 1. The bottom steel plate 4 is used to enhance the stability of the support and replace the water-stop steel plate. The lower support steel pipe 3 is inserted into the PVC pipe 1. The upper support steel pipe 2 is inserted into the top of the lower support steel pipe 3. An adjustable support 5 is installed on the upper support steel pipe 2. The adjustable support 5 is supported at the bottom of the formwork 6.

[0020] The lower supporting steel pipe 3 is provided with a socket 31 at its top.

[0021] The diameter of the socket 31 of the lower support steel pipe 3 is 48mm and the wall thickness is 5mm. The outer diameter of the rest of the lower support steel pipe 3 is 38mm and the wall thickness is 3mm. The outer and inner diameters of the PVC pipe 1 are precisely matched with the socket 31 of the lower support steel pipe 3.

[0022] The outer diameter of the upper supporting steel pipe 2 is 38mm and the wall thickness is 3mm.

[0023] The bottom steel plate 4 has dimensions of 100mm × 100mm × 3mm.

[0024] The diameter of the PVC pipe 1 is 50mm.

[0025] The length of the PVC pipe 1 is the same as the thickness of the concrete below the cantilever section.

[0026] In this application, after the foundation reinforcement is tied and before pouring concrete, the formwork 6 is installed. Before installing the cantilevered formwork 6, the bottom steel plate 4 is placed on the pad, the PVC pipe 1 is placed on the bottom steel plate 4, the lower support steel pipe 3 is inserted into the PVC pipe 1, and then the upper support steel pipe 2 is inserted into the socket 31. Finally, the adjustable support 5 and the formwork 6 are installed sequentially above the upper support steel pipe 2. The angle and height of the formwork 6 are adjusted by adjusting the adjustable support 5 to meet the design requirements.

[0027] Then, concrete is poured. After the concrete reaches the demolding strength, the adjustable support 5 is adjusted first, the formwork 6 is removed, the adjustable support 5 is taken off, the upper support steel pipe 2 is removed, and finally the lower support steel pipe 3 is pulled out from the PVC pipe 1. Since the lower support steel pipe 3 is not embedded in the concrete, it will not affect the demolding work. Moreover, the upper support steel pipe 2 and the lower support steel pipe 3 can be recycled and reused, thus avoiding the waste of non-recyclable steel pipes in the traditional method.

[0028] Finally, mortar or self-compacting concrete can be poured into PVC pipe 1.

[0029] The template support structure of this utility model is suitable for template support of the cantilevered part of the cavity of the wind power hybrid tower foundation, and can also be widely used for template support of other cantilever structures or cavity parts.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A template support structure for the cantilevered portion of the cavity in a wind turbine hybrid tower foundation, characterized in that, The structure includes a PVC pipe (1), an upper supporting steel pipe (2), a lower supporting steel pipe (3), and a bottom steel plate (4). The PVC pipe (1) is installed in the concrete below the cantilevered part of the wind power hybrid tower foundation cavity. The bottom steel plate (4) is fixed to the bottom of the PVC pipe (1). The lower supporting steel pipe (3) is inserted into the PVC pipe (1). The upper supporting steel pipe (2) is inserted into the top of the lower supporting steel pipe (3). An adjustable support (5) is installed on the upper supporting steel pipe (2). The adjustable support (5) is supported at the bottom of the template (6).

2. The template support structure for the cantilevered portion of the cavity in a wind turbine hybrid tower foundation according to claim 1, characterized in that, The lower supporting steel pipe (3) is provided with a socket (31) at its top.

3. A template support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity according to claim 2, characterized in that, The diameter of the socket (31) of the lower support steel pipe (3) is 48mm and the wall thickness is 5mm. The outer diameter of the rest of the lower support steel pipe (3) is 38mm and the wall thickness is 3mm.

4. The template support structure for the cantilevered portion of the cavity in a wind turbine hybrid tower foundation according to claim 1, characterized in that, The outer diameter of the upper supporting steel pipe (2) is 38mm and the wall thickness is 3mm.

5. A template support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity according to claim 1, characterized in that, The bottom steel plate (4) has dimensions of 100mm×100mm×3mm.

6. A template support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity according to claim 1, characterized in that, The diameter of the PVC pipe (1) is 50 mm.

7. A template support structure for the cantilevered portion of a wind turbine hybrid tower foundation cavity according to claim 6, characterized in that, The length of the PVC pipe (1) is the same as the thickness of the concrete below the cantilever section.

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