Reinforced concrete funnel top hoop formwork support system and construction method thereof

Abstract

The application relates to the technical field of building engineering construction, and discloses a reinforced concrete funnel top hoop formwork supporting system, which comprises a supporting base frame, outer secondary battens, outer main battens, outer formworks and inner formworks, the outer formworks and the inner formworks are both obliquely arranged on the supporting base frame, the number of the outer formworks and the inner formworks is both several, the outer formworks and the inner formworks are connected in a closed loop shape in a head-to-tail mode, a forming cavity for concrete pouring is formed between the outer formworks and the inner formworks, inner pull rods are connected between two opposite formworks, the outer main battens are obliquely arranged on the outer surfaces of the outer secondary battens, the outer main battens are circular and arranged in a ring direction of the funnel, the number of the outer main battens is several, and the outermost upper end surface of the supporting base frame is directly supported on the outer main battens at the bottom layer.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a reinforced concrete funnel top hoop formwork support system and its construction method. Background Technology

[0002] Existing formwork systems for silo hoppers are mostly full-span scaffolding systems composed of pure steel pipes and timber. The construction load of this system is transferred through the formwork to the secondary beams, then to the main beams, and finally to the support frame uprights and bearing surfaces. This type of full-span support frame typically uses a grid pattern or a radial-ring shape. When using a grid pattern, it is inconvenient to install the radial main beams at the top of the support, requiring many additional uprights. When using a radial-ring shape, a large number of short steel pipes are needed as circumferential horizontal stabilizing members.

[0003] The support structure of the funnel-shaped scaffold often has a high density of uprights. With the addition of horizontal and vertical scissor bracing and additional structural members, the entire temporary support system is cumbersome, uses a large amount of steel pipes, and wastes a lot of materials. The erection process is complicated and increases the difficulty of the workers' work. At the same time, the large number of workers and the large amount of work inside the warehouse further increase the safety hazards of working in a confined space.

[0004] Because the load on the funnel is generally large, even if there is a floor slab structure below the funnel, the floor slab is often relatively thin. The support system often extends all the way to the ground, requiring a large amount of support frame. The funnel support system usually cannot be removed until the concrete reaches its design strength, resulting in a long period of time spent on formwork support. In large-scale funnel pouring projects, this consumes a large amount of reusable materials, and transporting the formwork and support materials after demolding is difficult, labor-intensive, and increases construction costs. Summary of the Invention

[0005] This invention proposes a reinforced concrete funnel top hoop formwork support system and its construction method, which solves the problems of cumbersome support system structure and large amount of support frame usage in related technologies during funnel construction.

[0006] The technical solution of the present invention is as follows: The reinforced concrete funnel top hoop formwork support system includes a support frame, outer formwork, and inner formwork. Both the outer and inner formwork are inclinedly supported on the support frame. There are several outer and inner formwork units, which are connected end-to-end to form a closed loop. A forming cavity for concrete pouring is created between the outer and inner formwork units. Internal tie rods connect the opposing inner and outer formwork units. The system also includes outer and inner main ribs. An outer main rib is located on one side of the outer surface of the outer formwork, and an inner main rib is located on one side of the outer surface of the inner formwork. Both the outer and inner main ribs are located between their respective outer formwork surfaces and the mountain-shaped fasteners. The outer main ribs are circular and arranged circumferentially along the funnel. There are several outer main ribs. The outermost upper surface of the support frame directly supports the bottom outer main rib.

[0007] As a further technical solution, it also includes an outer secondary rib, which is disposed between the outer main rib and the outer template.

[0008] As a further technical solution, an inner secondary rib is also included, which is disposed between the inner main rib and the inner template.

[0009] As a further technical solution, the outer main rib and the outer secondary rib are arranged at an angle to each other, and the number of the outer main rib and the outer secondary rib is several.

[0010] As a further technical solution, the inner main rib and the inner secondary rib are arranged at an angle to each other, and the number of the inner main rib and the number of the inner secondary rib are both several.

[0011] As a further technical solution, the inner tie rod passes through the inner template and the outer template. The inner tie rod has an inner end and an outer end. The inner end is located on one side of the inner template. The inner end is provided with an inner secondary rib, an inner main rib, a mountain-shaped fastener, and a fastener in sequence. The inner secondary rib abuts against the inner template. The outer end is located on one side of the outer main rib. The outer end is provided with an outer secondary rib, an outer main rib, a mountain-shaped fastener, and a fastener in sequence. The mountain-shaped fastener abuts against the outer main rib.

[0012] A construction method for a support system, used on the reinforced concrete funnel top hoop formwork support system described above, includes the following methods: Method S1, preparing raw materials: including the support frame, the outer template, the inner template, the outer main rib, the inner main rib, the outer secondary rib, the inner secondary rib, the mountain-shaped fastener, the fastener and the inner tie rod; Method S2, Erection of the outer formwork support system: Install the support base, the outer main rib, the outer secondary rib, and the outer formwork in sequence; Method S3, Reinforcement binding: Reinforcement binding of the funnel-shaped inclined wall is performed in the forming cavity between the outer template and the inner template; Method S4, erection of the inner template support system: install the inner template, the inner secondary rib, the inner main rib, the inner tie rod, the mountain-shaped fastener and the fastener in sequence; Method S5, Concrete pouring: Start the concrete pouring equipment and pour concrete into the forming cavity between the outer formwork and the inner formwork; Method S6, Concrete curing: Curing the poured concrete funnel until the concrete strength reaches the design strength. Method S7, dismantling of the support system: dismantle the formwork support system step by step according to the principle of dismantling the support first and dismantling the support last.

[0013] The working principle and beneficial effects of this invention are as follows: This invention provides a reinforced concrete funnel top hoop formwork support system, specifically including a support frame, outer formwork, inner formwork, outer main ribs, inner main ribs, outer secondary ribs, inner secondary ribs, and inner tie rods. When setting up the support system, first, the support frame is erected below the concrete funnel opening. A bottom formwork support system for pouring the concrete funnel opening is supported at the upper end of the support frame. Then, the outer formwork is erected on the bottom formwork support system at the upper end of the support frame, forming a closed ring around the entire outer formwork, with the center of the closed ring coinciding with the center of the concrete funnel opening. The inner formwork is erected within the closed ring formed by the outer formwork. There are several outer and inner formworks, each corresponding to the previous one. The inner tie rods tighten the inner and outer main ribs with U-shaped fasteners, securing the formwork on opposite sides. Long, rod-shaped metal rods are preferred for the inner tie rods, but existing components with similar functions can also be used. The inner and outer main ribs are connected by the inner tie rods, allowing for the connection during concrete pouring. The horizontal load on the opposite formwork is quickly offset by the internal tie rods, preventing displacement of the opposite formwork in opposite directions, which could lead to concrete leakage and substandard concrete funnel dimensions. The outermost upper surface of the support frame directly supports the bottom outer main rib, allowing the downward load on the outer formwork to be transferred downwards to the support frame via the outer secondary and outer main ribs. This reduces the need for vertical support points below the outer formwork, effectively simplifying the support system's complexity, reducing the use of raw materials, and preventing excessive cumbersome support systems. This improves the overall material utilization rate and turnover speed of the support system. It also reduces the workload and difficulty for workers when setting up the support base, reducing safety hazards. The simplified support system creates an open area below the funnel's inclined wall, allowing for other preparatory work, improving site space utilization, and shortening the construction period. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure (without internal tie rods) at the cross-section of the present invention; Figure 2 This is a schematic diagram of the structure (with internal pull members) at the cross-section of the present invention; Figure 3 This is a top view of the template support system of the present invention; In the diagram: 1. Support frame, 2. Outer template, 3. Inner template, 4. Molding cavity, 5. Outer main rib, 6. Inner main rib, 7. Outer secondary rib 8. Internal secondary rib, 9. Mountain-shaped fastener, 10. Fastener, 11. Internal tie rod. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1-3 As shown in the figure, this embodiment proposes a reinforced concrete funnel top hoop formwork support system and its construction method.

[0018] A reinforced concrete funnel top hoop formwork support system includes a support frame 1, characterized in that it further includes an outer formwork 2 and an inner formwork 3. The outer formwork 2 and the inner formwork 3 are both inclinedly supported on the support frame 1. There are several outer formwork 2 and inner formwork 3. The outer formwork 2 and the inner formwork 3 are connected end to end to form a closed loop. A forming cavity 4 for concrete pouring is formed between the outer formwork 2 and the inner formwork 3. An inner tie rod 11 connects the outer formwork 2 and the inner formwork 3 that are in opposite positions. It also includes an outer main rib 5 and an inner main rib 6. The outer main rib 5 is provided on one side of the outer surface of the outer formwork 2, and the inner main rib 6 is provided on one side of the outer surface of the inner formwork 3. The outer main rib 5 and the inner main rib 6 are located between their respective outer surfaces of the formwork and the mountain-shaped fasteners 9. The outer main rib 5 is circular and arranged circumferentially along the funnel. There are several outer main ribs 5. The outermost upper surface of the support frame 1 directly supports the bottom outer main rib 5.

[0019] In this embodiment, as Figures 1-3As shown, a reinforced concrete funnel top hoop formwork support system is provided, specifically including a support frame 1, an outer formwork 2, an inner formwork 3, an outer main rib 5, an inner main rib 6, and an inner tie rod 11. When setting up the support system, the support frame 1 is first erected below the concrete funnel opening. A bottom formwork support system for pouring the concrete funnel opening is supported at the upper end of the support frame 1. Then, the outer formwork 2 is erected on the bottom formwork support system at the upper end of the support frame 1, forming a closed ring. The center of the closed ring coincides with the center of the concrete funnel opening. The inner formwork 3 is erected within the closed ring formed by the outer formwork 2. There are several outer formwork 2 and inner formwork 3, each corresponding to the other. The inner tie rod 11 uses a U-shaped fastener 9 to tightly fasten the inner main rib 6 and the outer main rib 5, connecting the formwork on opposite sides. The inner tie rod 11 is preferably a long, rod-shaped metal rod, but can also be a component with the same function from existing technology. The inner main rib 5 and the outer main rib 6 are connected by the inner tie rod 11. During concrete pouring, the horizontal load on the opposite formwork is quickly offset by the inner tie rod 11, preventing displacement of the opposite formwork in opposite directions, which could lead to concrete leakage and substandard concrete funnel dimensions. The outermost support frame 1 abuts against the bottom outer main rib 5, allowing the downward load on the outer formwork 2 to be transferred downwards to the support frame 1 via the outer secondary rib 7 and outer main rib 5. This reduces the need for vertical support points below the outer formwork 2, effectively simplifying the support system, reducing the use of raw materials, and avoiding excessive cumbersome support systems. This improves the overall utilization rate and turnover speed of raw materials in the support system. It also reduces the workload and difficulty of workers when setting up the support base, reducing safety hazards. The simplification of the support system creates an open area below the sloping wall of the funnel, allowing for other construction preparation work, improving the space utilization of the construction site, and shortening the construction period.

[0020] Furthermore, a mountain-shaped fastener 9 is added. Each inner tie rod 11 is equipped with a mountain-shaped fastener 9 and a fastener 10 at one end of the outer surface of the outer template 2. The inner tie rod 11 and the fastener 10 are preferably connected by threads, but can also be connected by snap-fit ​​or welding, which are existing technologies that can achieve the same connection effect. The fastener 10 is used to limit the position of the outer surface of the outer template 2 to prevent the outer template 2 from shifting during concrete pouring, which would result in unqualified concrete pouring dimensions. At the same time, by adjusting the position of the fastener 10, the tilt angle of the outer template 2 or the distance between two opposite outer templates 2 and inner templates 3 can be adjusted, thus expanding the applicability of the support system.

[0021] Furthermore, it also includes an outer secondary rib 7, which is disposed between the outer main rib 5 and the outer template 2.

[0022] Furthermore, it also includes an inner secondary rib 8, which is disposed between the inner main rib 6 and the inner template 3.

[0023] Furthermore, the outer main rib 5 and the outer secondary rib 7 are arranged at an angle to each other, and there are several outer main ribs 5 and several outer secondary ribs 7.

[0024] In this embodiment, as Figures 1-3 As shown, the outer main ribs 5 and outer secondary ribs 7 are arranged at an angle to each other, preferably 90 degrees. On one side of the outer surface of the outer formwork 2, the outer secondary ribs 7, outer main ribs 5, mountain-shaped fasteners 9, and fasteners 10 are distributed sequentially along the extension direction of the inner tie rods 11. Several first through holes are opened on the outer formwork 2, and only one inner tie rod 11 is installed in any one of the first through holes. The first through holes and the inner tie rods 11 are arranged in rows and columns on the outer formwork 2 at intervals. On the outer surface of the outer formwork 2, the inner tie rods 11 located on the same horizontal line share a row of outer main ribs 5. With the inner tie rods 11 as the connecting point, and combined with the intersecting outer main ribs 5 and outer secondary ribs 7, all the outer main ribs 5 and outer secondary ribs 7 intersect on the outer surface of the outer formwork 2 to form a grid. When the concrete is poured, the load on the entire outer formwork 2 will be distributed to the entire grid, avoiding single-point stress on the outer formwork 2, which could cause the outer formwork 2 to tilt or deform, and improving the stability and impact resistance of the entire formwork support system.

[0025] Furthermore, the inner main rib 6 and the inner secondary rib 8 are arranged at an angle to each other, and there are several inner main ribs 6 and several inner secondary ribs 8.

[0026] Furthermore, the inner tie rod 11 passes through the inner template 3 and the outer template 2. The inner tie rod 11 has an inner end and an outer end. The inner end is located on one side of the inner template 3. The inner end is sequentially provided with an inner secondary rib 8, an inner main rib 6, a mountain-shaped fastener 9, and a fastener 10. The inner secondary rib 8 abuts against the inner template 3. The outer end is located on one side of the outer main rib 5. The outer end is sequentially provided with an outer secondary rib 7, an outer main rib 5, a mountain-shaped fastener 9, and a fastener 10. The mountain-shaped fastener 9 abuts against the outer main rib 5.

[0027] In this embodiment, as Figures 1-3As shown, an inner tie rod 11 is added between the outer template 2 and the inner template 3. On the side of the inner template 3 away from the outer template 2, an inner secondary rib 8, an inner main rib 6, a mountain-shaped fastener 9, and a fastener 10 are added sequentially along the extension direction of the inner tie rod 11. The overall structure of the mountain-shaped fastener 9 is in the shape of a "3". The fastener 10 is preferably threadedly connected to the inner tie rod 11. On the side of the outer template 2 away from the inner template 3, an outer secondary rib 7, an outer main rib 5, a mountain-shaped fastener 9, and a fastener 10 are sequentially arranged on the inner tie rod 11 in the direction away from the outer template 2. The mountain-shaped fastener 9 is in contact with the main rib 5. The inner tie rod 11 is used to secure the inner template 3. Template 3 and outer template 2 are connected together to limit the spacing between inner template 3 and outer template 2, thereby constraining the thickness of the concrete pouring. Inner main ribs 6 and inner secondary ribs 8 are arranged at an angle to each other, preferably 90 degrees. Through the intersecting inner main ribs 6 and inner secondary ribs 8, a grid-like force system is formed on the side of inner template 3 away from outer template 2. This prevents the inner template 3 from shifting due to pressure during concrete pouring, which could lead to substandard concrete pouring. Simultaneously, the grid-like force system prevents single-point stress on the inner template 3, improving the stability and impact resistance of the entire template support system. The outer main ribs 5 and inner main ribs 6 are securely fixed using "3"-shaped mountain-shaped fasteners 9. This improves the uniformity of the overall distribution of outer main ribs 5 and inner main ribs 6, ensuring that all inner main ribs 6 evenly distribute the load on the inner template 3, guaranteeing the stability of the inner template 3 under stress, and preventing excessive local stress that could cause deformation of the inner template 3 and result in substandard concrete funnel dimensions.

[0028] A construction method for a support system, used on the reinforced concrete funnel top hoop formwork support system described above, includes the following methods: Method S1, preparing raw materials: including the support base frame 1, the outer template 2, the inner template 3, the outer main rib 5, the inner main rib 6, the outer secondary rib 7, the inner secondary rib 8, the mountain-shaped fastener 9, the fastener 10, and the inner tie rod 11; Method S2, Erection of the outer formwork support system: Install the support base frame 1, the outer main rib 5, the outer secondary rib 7, and the outer formwork 2 in sequence; Method S3, Reinforcement binding: Reinforcement binding of the funnel-shaped inclined wall is performed in the forming cavity 4 between the outer template 2 and the inner template 3; Method S4, erection of the inner template support system: install the inner template 3, the inner secondary rib 8, the inner main rib 6, the inner tie rod 11, the mountain-shaped fastener 9 and the fastener 10 in sequence; Method S5, concrete pouring: Start the concrete pouring equipment and pour concrete into the forming cavity 4 between the outer formwork 2 and the inner formwork 3; Method S6, Concrete curing: Curing the poured concrete funnel until the concrete strength reaches the design strength. Method S7, dismantling of the support system: dismantle the formwork support system step by step according to the principle of dismantling the support first and dismantling the support last.

[0029] In this embodiment, as Figures 1-3 As shown, a construction method is provided, including the following methods: Method S1, Prepare raw materials: Based on the overall requirements of the template support system, prepare the required support frame 1, outer template 2, inner template 3, outer main rib 5, inner main rib 6, outer secondary rib 7, inner secondary rib 8, mountain-shaped fastener 9, fasteners 10, and inner tie rods 11; and stack them separately for easy access. Method S2, Erection of the external formwork support system: First, according to the arrangement requirements of the concrete funnel opening, the support base frame 1 is erected; then, the outer main rib 5 and the outer secondary rib 7 are erected in sequence on the support base frame 1; then, the outer formwork 2 distributed in a ring is erected on the outer secondary rib 7. Method S3, Reinforcement binding: Reinforcement binding is performed on the inclined wall of the funnel within the forming cavity 4 between the outer formwork 2 and the inner formwork 3; Method S4, the erection of the inner formwork support system: First, the inner formwork 3 is erected at the middle position surrounded by the outer formwork 2; then, the inner secondary ribs 8 and inner main ribs 6 are erected in sequence on the inner formwork 3; then, the inner tie rods 11 are installed between the outer formwork 2 and the inner formwork 3; then, the mountain-shaped fasteners 9 and fasteners 10 are installed in sequence on the inner tie rods 11 to connect the outer formwork 2 and the inner formwork 3 together; Method S5, concrete pouring: First, start the concrete mixing equipment to mix the concrete evenly, then start the concrete pouring equipment to pour the evenly mixed concrete between the outer formwork 2 and the inner formwork 3, and vibrate the concrete as needed, and finally complete the pouring. Method S6, Concrete curing: Curing the poured concrete funnel until the concrete strength reaches the design strength. Method S7, dismantling of the support system: Following the principle of dismantling after supporting and dismantling the last support first, the formwork support system is dismantled step by step. The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reinforced concrete funnel top hoop formwork support system, comprising a support frame (1), characterized in that, It also includes an outer template (2) and an inner template (3). The outer template (2) and the inner template (3) are both inclinedly supported on the support frame (1). There are several outer templates (2) and inner templates (3). The outer templates (2) and the inner templates (3) are connected end to end to form a closed loop. A forming cavity (4) for concrete pouring is formed between the outer templates (2) and the inner templates (3). An inner tie rod (11) connects the outer templates (2) and the inner templates (3) that are in opposite positions. It also includes an outer main rib (5) and an inner main rib (6). The outer main rib (5) is provided on one side of the outer surface of the outer template (2), and the inner main rib (6) is provided on one side of the outer surface of the inner template (3). The outer main rib (5) and the inner main rib (6) are located between their respective outer template surfaces and mountain-shaped fasteners (9). The outer main rib (5) is circular and arranged along the funnel circumferential direction. The number of outer main ribs (5) is several. The outermost upper surface of the support frame (1) directly supports the bottom outer main rib (5).

2. The reinforced concrete funnel top hoop formwork support system according to claim 1, characterized in that, It also includes an outer secondary rib (7), which is disposed between the outer main rib (5) and the outer template (2).

3. The reinforced concrete funnel top hoop formwork support system according to claim 1, characterized in that, It also includes an inner secondary rib (8), which is disposed between the inner main rib (6) and the inner template (3).

4. The reinforced concrete funnel top hoop formwork support system according to claim 2, characterized in that, The outer main rib (5) and the outer secondary rib (7) are arranged at an angle to each other, and there are several outer main ribs (5) and several outer secondary ribs (7).

5. The reinforced concrete funnel top hoop formwork support system according to claim 3, characterized in that, The inner main rib (6) and the inner secondary rib (8) are arranged at an angle to each other, and there are several inner main ribs (6) and several inner secondary ribs (8).

6. The reinforced concrete funnel top hoop formwork support system according to claim 5, characterized in that, The inner tie rod (11) passes through the inner template (3) and the outer template (2). The inner tie rod (11) has an inner end and an outer end. The inner end is located on one side of the inner template (3). The inner end is provided with an inner secondary rib (8), an inner main rib (6), a mountain-shaped fastener (9), and a fastener (10) in sequence. The inner secondary rib (8) abuts against the inner template (3). The outer end is located on one side of the outer main rib (5). The outer end is provided with an outer secondary rib (7), an outer main rib (5), a mountain-shaped fastener (9), and a fastener (10) in sequence. The mountain-shaped fastener (9) abuts against the outer main rib (5).

7. A construction method for a support system, used on the reinforced concrete funnel top hoop formwork support system as described in any one of claims 1-6, characterized in that, Including the following methods: Method S1, preparing raw materials: including the support base frame (1), the outer template (2), the inner template (3), the outer main rib (5), the inner main rib (6), the outer secondary rib (7), the inner secondary rib (8), the mountain-shaped fastener (9), the fastener (10), and the inner tie rod (11); Method S2, the erection of the outer template support system: the support base frame (1), the outer main rib (5), the outer secondary rib (7), and the outer template (2) are installed in sequence; Method S3, Reinforcement binding: Reinforcement binding of the funnel-shaped inclined wall is performed in the forming cavity (4) between the outer template (2) and the inner template (3); Method S4, the erection of the inner template support system: the inner template (3), the inner secondary rib (8), the inner main rib (6), the inner tie rod (11), the mountain-shaped fastener (9) and the fastener (10) are installed in sequence. Method S5, concrete pouring: Start the concrete pouring equipment and pour concrete into the forming cavity (4) between the outer template (2) and the inner template (3); Method S6, Concrete curing: Curing the poured concrete funnel until the concrete strength reaches the design strength. Method S7, dismantling of the support system: dismantle the formwork support system step by step according to the principle of dismantling the support first and dismantling the support last.

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