Steel-concrete tower fan foundation one-time pouring forming supporting device and construction method

Abstract

The invention discloses a reinforced concrete tower fan foundation one-time pouring forming supporting device and a construction method, the reinforced concrete tower fan foundation one-time pouring forming supporting device comprises a base arranged in bottom layer concrete and a column foot connected with the base, the upper portion of the column foot is detachably connected with a scaffold, and the middle of the column foot is sleeved with a water stop strip. The base and the column feet which penetrate through the bottom layer concrete are arranged, the column feet are detachably connected with the scaffold, disassembly and assembly are convenient, an inverted-T-shaped supporting frame can be formed in the inverted-T-shaped cavity, one-time pouring of the concrete foundation can be achieved, and the working efficiency is improved. After the concrete foundation is poured, the scaffold and the formwork are disassembled, the column foot is flatly cut along the surface of the bottom layer concrete, the column foot part is permanently embedded into the concrete bottom plate, then the cut part is closed, and operation is easy and fast. In addition, a water stop steel sheet is arranged in the middle of the column foot, a water permeation path is effectively blocked, water leakage or water seepage at the joint is prevented, and the waterproof performance and durability of the structure are ensured.

Description

Technical Field

[0001] The present invention relates to the field of the construction of the steel - concrete tower fan foundation, and specifically to a one - time casting and forming support device and construction method for the steel - concrete tower fan foundation. Background Art

[0002] The existing steel - concrete tower fan foundation adopts a cavity structure, that is, a hollow form with a convex - shaped cavity inside, as shown in Figure 1 . The traditional construction method adopts the secondary pouring method: First, formwork and pour the part below the inner cantilever section, and embed a water - stop steel plate on the top surface after the first pouring is completed; after the concrete sets, then formwork and pour the inner cantilever section and the part above it in the cavity. However, the joint surface of the two pourings is prone to form a construction cold joint, and water seepage may occur when encountering groundwater. Especially for the steel - concrete tower barrel foundation in the wading area, the foundation will be soaked underwater for a long time after the pouring is completed, and the water seepage problem is more prominent. Long - term water seepage will not only lead to a decline in the structural performance of the fan foundation, but also may form water accumulation in the bottom pit, bringing great difficulties to the later maintenance and posing serious safety hazards. Summary of the Invention

[0003] The present invention provides a one - time casting and forming support device and construction method for the steel - concrete tower fan foundation, which can realize the one - time formwork forming of the convex - shaped cavity and effectively avoid the water leakage and seepage problems caused by the construction cold joint in the traditional secondary pouring process.

[0004] The one - time casting and forming support device for the steel - concrete tower fan foundation of the present invention includes a base placed in the bottom - layer concrete and a column foot connected to the base. The upper part of the column foot is detachably connected to the scaffolding, and a water - stop sheet is sleeved and installed in the middle of the column foot.

[0005] The construction method of the one - time casting and forming support device for the steel - concrete tower fan foundation of the present invention includes the following steps: Foundation treatment step: Excavate the foundation pit, pour the concrete cushion layer, and reserve a cup - shaped concave pit in the concrete cushion layer for placing the support device; Support device installation step: After the concrete cushion layer solidifies, place concrete bricks in the reserved concave pit, connect the column foot of the support device to the scaffolding, and then fixedly place the base of the support device on the concrete bricks. At the same time, adjust the height of the scaffolding to ensure that it is higher than the bottom plate surface of the bottom - layer concrete to be poured; Support frame formwork step: After the support device is installed, formwork the overall formwork and scaffolding of the steel - concrete fan foundation, and synchronously complete the steel bar binding of the scaffolding. By installing the steel bars and formwork at one time, a convex - shaped support frame is formed in the special - shaped cavity; Concrete pouring step: Continuously pour concrete starting from the bottom - layer concrete, so that the entire steel - concrete fan foundation is cast and formed at one time. After the concrete sets, carry out the formwork removal operation; Form removal steps: Remove the scaffolding and formwork, cut the column feet of the support device along the bottom surface of the bottom-layer concrete, and then use fine aggregate expansive concrete to seal the joint between the column feet and the bottom-layer concrete to ensure the structural density.

[0006] The steel-concrete tower fan foundation one-time casting forming support device and construction method thereof, by setting a base and column feet penetrating the bottom-layer concrete, and the column feet are detachably connected to the scaffolding, which is convenient for disassembly and assembly, so that a convex-shaped support frame can be formed in the convex-shaped cavity, and the one-time casting of the concrete foundation can be realized, improving work efficiency. After the concrete foundation is poured, remove the scaffolding and formwork, cut the column feet smoothly along the surface of the bottom-layer concrete, and the column feet are permanently embedded in the bottom-layer concrete floor slab, and then seal the cutting part, which is simple and fast to operate. In addition, a water-stop steel sheet is arranged in the middle of the column feet, effectively blocking the water penetration path, preventing water leakage or seepage at the joint, and ensuring the waterproof performance and durability of the structure. At the same time, after form removal, use fine aggregate expansive concrete to seal the joint of the column feet, further improving the waterproof performance and durability of the structure.

[0007] As a preferred solution of the present invention, a threaded interface is provided at the top end of the column feet, and the column feet and the scaffolding are threadedly connected.

[0008] As a preferred solution of the present invention, a limiting edge extends downward from the side of the base. Description of the Drawings

[0009] Figure 1 It is a schematic diagram of a steel-concrete tower fan foundation with a convex-shaped cavity inside.

[0010] Figure 2 It is a schematic diagram of a steel-concrete tower fan foundation one-time casting forming support device.

[0011] Figure 3 It is a sectional view of a steel-concrete tower fan foundation one-time casting forming support device.

[0012] Figure 4 It is a top view schematic diagram of a steel-concrete tower fan foundation one-time casting forming support device.

[0013] Figure 5 It is a schematic diagram of a convex-shaped support frame structure.

[0014] Figure 6 It is a schematic diagram of a concrete cushion structure.

[0015] Figure 7 It is a schematic diagram of the installation structure of a steel-concrete tower fan foundation one-time casting forming support device.

[0016] Figure 8 It is a schematic diagram after cutting the column feet of the support device. Detailed implementation mode

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0019] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "setting", "provided with", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] If there is a description involving "first" or "second" etc. in the embodiments of the present invention, then the description of "first" or "second" etc. is only for descriptive purposes and cannot be understood as indicating or implying its relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, and above, below, within, etc. are all understood to include the present number. In addition, the technical features of each embodiment can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered to be within the scope described in this specification.

[0021] As Figure 2-8 shown, a support device for one-time casting and forming of a steel-concrete tower fan foundation includes a base 2 placed in the bottom layer of concrete 1 and a column foot 3 connected to the base. The upper part of the column foot 3 is detachably connected to a scaffold 4, and a water stop sheet 5 is sleeved in the middle of the column foot 3.

[0022] The construction method of the one-time casting and forming support device for the steel-concrete tower fan foundation includes the following steps: Foundation treatment step: Excavate the foundation pit, pour the concrete cushion 6, and reserve a cup-shaped recess 7 in the concrete cushion for placing the support device; Support device installation step: After the concrete cushion 6 solidifies, place concrete bricks 8 in the reserved recess 7, connect the column foot 3 of the support device with the scaffolding 4, and then fixedly place the base of the support device on the concrete bricks. At the same time, adjust the height of the scaffolding to ensure it is higher than the bottom surface of the bottom layer of concrete 1 to be poured; Support frame formwork erection step: After the support device is installed, erect the formwork for the overall formwork and scaffolding of the steel-concrete fan foundation, and synchronously complete the steel bar binding of the scaffolding. By installing the steel bars and formwork at one time, a convex-shaped support frame 9 is formed in the special-shaped cavity; Concrete pouring step: Continuously pour concrete starting from the bottom layer of concrete, so that the entire steel-concrete fan foundation is cast and formed at one time. After the concrete solidifies, carry out the formwork removal operation; Formwork removal step: Remove the scaffolding and formwork, cut the column foot of the support device along the bottom surface of the bottom layer of concrete, and then use fine aggregate expansive concrete 10 to seal the joint between the column foot and the bottom layer of concrete to ensure the structural density.

[0023] For the one-time casting and forming support device and construction method of the steel-concrete tower fan foundation, by setting a base and a column foot that penetrate the bottom layer of concrete, and the column foot is detachably connected to the scaffolding, which is convenient for disassembly and assembly. It can form a convex-shaped support frame in the convex-shaped cavity, thus realizing the one-time casting of the concrete foundation and improving work efficiency. After the concrete foundation is poured, remove the scaffolding and formwork, cut the column foot smoothly along the surface of the bottom layer of concrete, and the column foot part is permanently embedded in the bottom layer of concrete floor slab. Then seal the cutting part, which is simple and fast to operate. In addition, a water stop steel sheet is arranged in the middle of the column foot, effectively blocking the water penetration path, preventing water leakage or seepage at the joint, and ensuring the waterproof performance and durability of the structure. At the same time, after formwork removal, use fine aggregate expansive concrete to seal the joint of the column foot, further enhancing the waterproof performance and durability of the structure.

[0024] The top of the column foot 3 is provided with a threaded interface 301. The column foot is threadedly connected to the scaffolding, and the column foot is detachably connected to the scaffolding through threads, making the installation and disassembly process more convenient and efficient, without the need for complex tools or equipment, and significantly improving the construction efficiency. In addition, the detachable connection method of threaded connection can quickly adjust the position or height of the column foot according to needs during the construction process, improving the flexibility and adaptability of the construction.

[0025] On opposite sides of the base, there are downwardly extending limiting edges 201. In the case where the soil layer is relatively soft, in order to improve the stability of the support device, concrete bricks can be placed as support points for the base before the bottom layer of concrete is poured. Since directly placing the base on the concrete bricks may not provide sufficient stability, by providing limiting edges on both sides of the base, the two limiting edges respectively abut against both sides of the concrete bricks, thereby firmly fixing the base on the concrete bricks and significantly enhancing the stability of the entire support device.

[0026] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention. In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "embodiment", "schematic embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. It is explicitly and implicitly understood by those skilled in the art that, without conflict, the embodiments described herein can be combined with other embodiments, and the embodiments and features in the embodiments of the present invention can be combined with each other.

Claims

1. A support device for the one-time casting and forming of a steel-concrete tower fan foundation, characterized in that, It includes a base (2) placed in the underlying concrete (1) and a column base (3) connected to the base. The upper part of the column base (3) is detachably connected to a scaffolding (4), and a water stop sheet (5) is sleeved in the middle of the column base (3).

2. The one-time casting and forming support device for the steel-concrete tower fan foundation according to claim 1, characterized in that, A threaded interface (301) is provided at the top of the column base (3), and the column base is threadedly connected to the scaffolding.

3. The one-time casting forming support device for the steel-concrete tower fan foundation according to claim 1, wherein, A limiting edge (201) extends downward from the side of the base.

4. A construction method of a support device using a steel-concrete tower fan foundation with one-time casting and molding, characterized in that, It includes the following steps: Foundation treatment step: Excavate a foundation pit, pour a concrete cushion (6), and reserve a cup-shaped recess (7) in the concrete cushion for placing a support device; Support device installation step: After the concrete cushion (6) solidifies, place a concrete brick (8) in the reserved recess (7), connect the column base (3) of the support device to the scaffolding (4), then fixedly place the base of the support device on the concrete brick, and at the same time adjust the height of the scaffolding to ensure it is higher than the bottom surface of the underlying concrete (1) to be poured; Support frame formwork erection step: After the support device is installed, erect the formwork for the overall steel-concrete fan foundation and the scaffolding, and synchronously complete the steel bar binding of the scaffolding. By installing the steel bars and formwork at one time, a convex-shaped support frame (9) is formed in the special-shaped cavity; Concrete pouring step: Continuously pour concrete starting from the underlying concrete, so that the entire steel-concrete fan foundation is poured in one go, and carry out formwork removal operation after the concrete solidifies; Formwork removal step: Remove the scaffolding and formwork, cut the column base of the support device along the bottom surface of the underlying concrete, and then use fine aggregate expansive concrete (10) to seal the joint between the column base and the underlying concrete to ensure the structure is dense.

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