A curved wall formwork support system and its construction method

Abstract

This invention discloses an arc-shaped wall formwork support system and its construction method, comprising: inner lining panels, two sets of which are arranged corresponding to the two side walls of the wall to be poured in the normal direction, forming an arc-shaped pouring space between the two sets of inner lining panels; shaping components, which are respectively arranged corresponding to the outer side of the two sets of inner lining panels, and each inner lining panel includes at least one set of shaping components in the vertical direction, the shaping components adjusting and limiting the bending degree of the inner lining panels; and fastening connection components, which are located outside the pouring space and in the wall thickness direction of the pouring space, the shaping components located on both sides of the pouring space being pulled and fastened by the fastening connection components. This invention can replace traditional customized formwork, and by bending and positioning the inner lining panels through the shaping components, it can greatly improve its versatility, eliminate the need for customization, reduce the construction cycle and construction cost, and is recyclable.

Description

Technical Field

[0001] This invention relates to the field of building engineering, and in particular to an arc-shaped wall formwork support system and its construction method. Background Technology

[0002] Currently, most formwork systems used in the construction of cast-in-place curved walls in the building engineering field are traditional formwork systems. The specific operation steps are as follows: When constructing a cast-in-place curved wall, it is necessary to first contact the relevant formwork manufacturer to customize the curved wooden formwork according to the structural construction drawings. After being transported to the construction site, it is installed using traditional formwork installation methods, employing tie rods and steel pipes with timber. This traditional approach has the following drawbacks:

[0003] First, there is material waste: Custom-made curved wall templates, based on structural drawings, cannot be reused after the wall construction is completed, resulting in raw material waste and failing to meet the relevant management requirements for green construction. Second, the construction period is long: Custom-made curved wall templates need to be contacted with manufacturers in advance, and the precision, quality, and quantity of the templates must be inspected, extending the construction period compared to ordinary template construction. Third, project costs increase: Using traditional methods for curved wall construction increases project costs due to supplier management, template material acceptance management, and the extended construction period, including the waste caused by the customization of template materials and the inability to reuse them. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides an arc-shaped wall formwork support system and its construction method, which does not require customization, can be recycled, and has low processing cost.

[0005] Technical solution: To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A curved wall formwork support system, comprising:

[0007] The inner lining panels are provided in two sets corresponding to the two side walls of the wall to be poured in the normal direction, and an arc-shaped pouring space is formed between the two sets of inner lining panels.

[0008] A shaping component is provided respectively corresponding to the outer side of the two sets of inner lining panels, and each inner lining panel includes at least one set of the shaping component in the vertical direction. The shaping component adjusts and limits the degree of curvature of the inner lining panel.

[0009] A fastening connection assembly is located outside the casting space and in the wall thickness direction of the casting space. The shaping components located on both sides of the casting space are fastened by the fastening connection assembly.

[0010] Furthermore, the pouring space extends in an arc shape within the transverse extension surface of the wall.

[0011] Furthermore, the two sets of shaping components are a first shaping component and a second shaping component, respectively. The length of the first shaping component corresponding to the pouring space is greater than the length of the second shaping component corresponding to the pouring space. The first shaping component bends from the outer bending side to the inner bending side by pressing the inner lining plate outward, and the second shaping component bends from the inner bending side to the outer bending side by supporting the inner lining plate inward.

[0012] Furthermore, the first shaping component and the second shaping component have the same structure but different lengths; the first shaping component / second shaping component includes a rib pressure band, a prestressed strut and a prestressed component, the rib pressure band is attached to the outer wall surface of the inner lining plate, and prestressed components are respectively provided at both ends of the rib pressure band, and the prestressed components are connected to the fastening connection component;

[0013] The prestressed strut is an elastic rod structure. The strut body is attached to the side of the rib pressure band away from the casting space. The two sets of prestressed components are respectively set at one end of the prestressed strut, and the displacement adjustment of the two ends of the prestressed strut relative to the prestressed components produces bending deformation.

[0014] Furthermore, the prestressed component includes a connecting seat and an adjusting member. The connecting seat is simultaneously connected to the end of the rib pressure band and the fastening connecting component. The end of the prestressed strut moves through the connecting seat and is provided with an adjusting member. The adjusting member adjusts the length of the prestressed strut extending out of the connecting seat. The length of the prestressed strut between the two connecting seats is adjusted by two sets of adjusting members, and the prestressed strut undergoes bending deformation adjustment under the pulling action of the fastening connecting component.

[0015] Furthermore, the prestressed strut has an external threaded section at its end, and the adjusting member is an adjusting nut that matches the external threaded section. The adjusting nut is circumferentially movable and axially fixed to the connecting seat.

[0016] Furthermore, the connecting seat includes a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are arranged intersectingly, the prestressed strut passes through the first connecting seat, and the second connecting seat is detachably connected to the fastening connection assembly.

[0017] Furthermore, the rib compression band includes several chain links, and the chain links are sequentially hinged end to end to form a chain structure with adjustable bending, and two adjacent chain links are detachable.

[0018] Furthermore, it also includes a traction mechanism, which is disposed between two sets of fastening connection components and extends through the casting space, and the traction mechanism pulls the shaping components located on both sides of the casting space.

[0019] A construction method for an arc-shaped wall formwork support system includes the following steps:

[0020] S1: Based on the drawings, locate and lay out the curved wall to be constructed and pre-embed the wall reinforcement.

[0021] S2: Determine the length of the rib pressure strip and prestressed strut in the first and second shaping components according to the length of the outer and inner curved sides of the wall to be constructed;

[0022] S3: Insert both ends of the prestressed strut into the connecting seats in the corresponding first shaping component / second shaping component, and pre-tighten the prestressed strut and connecting seats by adjusting the components; to obtain the first shaping component and the second shaping component;

[0023] S4: Place the first shaping component and the second shaping component corresponding to the outer and inner curved sides of the wall, and connect them through two sets of fastening connection components to form a closed loop structure;

[0024] S5: Place the two sets of inner lining plates corresponding to the outer and inner curved sides of the casting space, respectively, and place the two sets of inner lining plates inside the closed-loop structure.

[0025] S6: The first shaping component is locked and fixed by two sets of fastening connection components, so that the first shaping component presses the inner lining plate from the outer bending side to the inner bending side, and the second shaping component supports the inner lining plate from the inner bending side to the outer bending side, thereby forming a casting space.

[0026] S7: Adjust the adjusting parts of the first shaping component and the second shaping component respectively to make the prestressed strut bend slightly adjusted until the arc curvature of the two sets of inner lining plates is consistent with the positioning line.

[0027] S8: Side guard plates are placed on the two transverse opening sides of the pouring space, and the side guard plates and inner lining guard plates are used to enclose the pouring cavity with a circumferentially closed and top-open structure.

[0028] S9: Inject concrete into the pouring cavity and cure it, and remove the wall formwork support system after the wall curing is completed.

[0029] Beneficial effects: This invention can replace traditional customized templates. By bending and positioning the inner lining panel through the shaping components, it can greatly improve its versatility, eliminate the need for customization, reduce construction cycle and construction cost, and can be recycled. Attached Figure Description

[0030] AppendixFigure 1 This is a top view of the overall structure of the present invention in the casting state;

[0031] Appendix Figure 2 This is a schematic diagram of the rib compression band of the present invention;

[0032] Appendix Figure 3 This is an enlarged structural diagram of part A of the present invention;

[0033] Appendix Figure 4 This is a partially enlarged schematic diagram of the traction mechanism area of ​​the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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.

[0038] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0039] As attached Figure 1 To be continued Figure 3 As shown, an arc-shaped wall formwork support system includes:

[0040] The inner lining plate shown is an elastic plate structure that can elastically deform to produce a bending arc. The two sets of inner lining plates are set on the two side walls in the normal direction of the wall to be poured, and an arc-shaped pouring space is formed between the two sets of inner lining plates.

[0041] By replacing traditional custom-made formwork with integral deformable building formwork, after the construction of the curved wall is completed, the integral deformable building formwork can be dismantled, recycled, and simply cleaned and processed before being installed and used in the next construction section. This solves the problem of material waste caused by the inability to recycle and reuse custom-made formwork during the construction of traditional curved walls.

[0042] A shaping component is provided on the outer side of each of the two sets of inner lining plates, and each inner lining plate includes at least one set of the shaping component in the vertical direction. The shaping component adjusts and limits the degree of curvature of the inner lining plate. The shaping component bends and shapes the inner lining plate to a certain extent to form the outer contour of the casting space according to the design drawings.

[0043] A fastening connection assembly is located outside the casting space and along the wall thickness direction of the casting space. The shaping components located on both sides of the casting space are fastened together by the fastening connection assembly. The fastening connection assembly 4 defines the distance between the two inner lining plates 1, i.e., the thickness of the casting space used to form the wall. The fastening connection assembly connects the inner lining plates and shaping components on both sides, ensuring the stability of the formwork. At the same time, through the pulling action of the fastening connection assembly, the inner lining plates and shaping components on both sides can be fastened, making them horizontally closed to form a complete formwork waler system, ensuring that it can fit the wall formwork to form a formwork system.

[0044] The casting space is arc-shaped within the transverse extension surface of the wall, meaning that the cast space includes an inner curved side and an outer curved side. The inner curved side and the outer curved side can be two arc surfaces with different centers or two arc surfaces with the same center, thus enabling template design for walls of different shapes and specifications to form different casting spaces.

[0045] As attached Figure 1As shown, the two sets of shaping components are a first shaping component and a second shaping component. The length of the first shaping component corresponding to the pouring space is greater than the length of the second shaping component corresponding to the pouring space. The first shaping component presses the inner lining plate from the outer bending side to the inner bending side, and the second shaping component supports the inner lining plate from the inner bending side to the outer bending side. Through the inner pushing and outer pressing action of the shaping components on both the inner and outer sides, the inner lining plate can be deformed towards the wall / pouring space, thereby forming an arc-shaped pouring space. Specifically, the first shaping component 5 presses the inner lining plate from the outer bending side to both sides, so that the inner lining plate bends towards the arc-shaped wall, forming a concave surface relative to the wall; the second shaping component 6 pushes the inner part of the inner lining plate to the middle part, so that the middle part of the inner lining plate protrudes towards the wall, forming a convex surface towards the wall.

[0046] The first and second shaping components have the same structure but different lengths, and their lengths are adjustable. The strength of the corresponding first or second shaping component and the length of the inner lining plate are adjusted according to different construction wall types. The first / second shaping component includes rib pressure strips, prestressed struts, and prestressed components. The rib pressure strips are attached to the outer wall surface of the inner lining plate, and prestressed components are respectively provided at both ends of the rib pressure strips. The prestressed components are connected to the fastening connection components. The rib pressure strips can be bent into the required template curvature, which can apply top or external pressure to the inner lining plate. The rib pressure strips are attached to the outer wall surface of the inner lining plate, forming ribs that support the inner lining plate.

[0047] The prestressed strut is an elastic rod structure. The strut body is attached to the side of the rib pressure band away from the casting space. The two sets of prestressed components are respectively set at one end of the prestressed strut, and the displacement adjustment of the two ends of the prestressed strut relative to the prestressed components produces bending deformation.

[0048] Because the prestressed component 8 is fixed relative to the fastening connection component, by adjusting the displacement of the end of the prestressed strut and the prestressed component, that is, adjusting the length of the strut between the two sets of prestressed components 8, the prestressed strut can produce an adjustable bending amplitude. The elastic bending deformation of the prestressed strut 7 acts on the rib pressure band and the inner lining plate, causing the rib pressure band and the inner lining plate to bend.

[0049] As attached Figure 3As shown, the prestressed component includes a connecting seat and an adjusting member. The connecting seat is simultaneously connected to the end of the rib pressure band and the fastening connecting component. The end of the prestressed strut moves through the connecting seat and is provided with the adjusting member, which adjusts the length of the prestressed strut extending out of the connecting seat. The length of the prestressed strut between the two connecting seats is adjusted by two sets of adjusting members 12, and the prestressed strut undergoes bending deformation adjustment under the tension of the fastening connecting component. The prestressed strut has an external threaded section at its end, and the adjusting member is an adjusting nut that matches the external threaded section. The adjusting nut is circumferentially movable and axially fixed to the connecting seat.

[0050] The connecting seat includes a first connecting seat and a second connecting seat. The connecting seat 11 has an L-shaped structure. The first connecting seat and the second connecting seat are intersecting, preferably perpendicularly intersecting. The prestressed strut passes through the first connecting seat, and the first connecting seat has a through hole for the support rod 7 to pass through. The second connecting seat is detachably connected to the fastening connection assembly. Preferably, the fastening connection assembly 4 is a rod structure, and both ends include connecting structures, such as threaded sections, snap-fit ​​structures, and pin structures.

[0051] As attached Figure 2 As shown, the rib pressure band includes several chain links, each chain link being in an ∞ shape. These chain links are sequentially hinged end-to-end to form a chain structure with adjustable bending. Adjacent chain links are detachable, allowing for adjustment of the rib pressure band's length. The chain structure exhibits good flexibility and rigidity, and is highly versatile.

[0052] The ribbed pressure strip, in conjunction with the integrally deformable inner lining panel 1, uses lightweight hinged steel ribbed pressure strips instead of timber as the formwork support ribs. Because these ribbed pressure strips can be arbitrarily changed in shape within a certain range through a pivot, they have good plasticity. Workers can create the required curvature of the formwork for curved wall construction on-site according to the construction drawings, without needing to contact a formwork manufacturer in advance for custom-made curved wall formwork. Using hinged ribbed pressure strips as the support ribs to form the required curvature of the wall formwork solves the problem of long construction cycles associated with using custom-made curved wall formwork.

[0053] The hinged rib compression band also includes a groove on its outer side, which is formed by the flanges of several connectors 16. The groove serves as a placement space for the prestressed struts 7, ensuring that the rib compression band and the prestressed struts are relatively fixed. By screwing the threads at both ends of the reinforcing bar, it generates an arc shape, producing a supporting force pointing towards the inner side of the arc-shaped wall on both the inner and outer sides of the wall. This improves the rigidity of the hinged rib and allows the deformable inner lining plate 1 to deform into an arc shape for forming the arc-shaped wall.

[0054] As attached Figure 4 As shown, it also includes a traction mechanism, which is disposed between two sets of fastening connection components and extends through the casting space. The traction mechanism pulls the shaping components located on both sides of the casting space. The traction mechanism 20 connects the shaping components on both sides to maintain the curvature of the rib pressure band and prestressed struts, ensuring that the formwork support system can provide the required load-bearing capacity, stiffness, and stability during the casting of the curved wall.

[0055] The pulling mechanism 20 includes a pull rod 22 and a fastener 21. One end of the pull rod 22 extends from one side of the casting space 10 to the other side, and the fastener 21 is installed on one or both ends of the pull rod 22 to fasten the pull rod to the fastening assembly.

[0056] A construction method for an arc-shaped wall formwork support system includes the following steps:

[0057] S1: Based on the drawings, locate and lay out the curved wall to be constructed and pre-embed the wall reinforcement.

[0058] S2: Determine the length of the rib pressure strip and prestressed strut in the first and second shaping components according to the length of the outer and inner curved sides of the wall to be constructed;

[0059] S3: Insert both ends of the prestressed strut into the connecting seats in the corresponding first shaping component / second shaping component, and pre-tighten the prestressed strut and connecting seats by adjusting the components; to obtain the first shaping component and the second shaping component;

[0060] S4: The first shaping component and the second shaping component are placed corresponding to the outer and inner curved sides of the wall, and connected by two sets of fastening connection components to form a closed loop structure. Multiple sets of this closed loop structure are installed vertically to ensure the stability and fastness of the template system.

[0061] S5: Place the two sets of inner lining plates corresponding to the outer and inner curved sides of the casting space, respectively, and place the two sets of inner lining plates inside the closed-loop structure.

[0062] S6: The first shaping component is locked and fixed by two sets of fastening connection components, so that the first shaping component presses the inner lining plate from the outer bending side to the inner bending side, and the second shaping component supports the inner lining plate from the inner bending side to the outer bending side, thereby forming a casting space.

[0063] S7: Adjust the adjusting parts of the first shaping component and the second shaping component respectively to make the prestressed strut bend slightly adjusted until the arc curvature of the two sets of inner lining plates is consistent with the positioning line.

[0064] S8: Side guard plates 17 are placed on the two transverse opening sides of the pouring space, and the side guard plates 17 and the inner lining guard plate are used to enclose the pouring cavity with a circumferentially closed and top-open structure.

[0065] S9: Inject concrete into the pouring cavity and cure it, and remove the wall formwork support system after the wall curing is completed.

[0066] After the wall strength meets the relevant design requirements, the entire formwork support system is removed. First, the supporting force applied to both sides of the formwork is released by tightening the adjusting nuts 12 at both ends of the prestressed strut 7, and then the prestressed strut 7 is removed; then the fastening connection components at both ends are removed, so that the hinged steel rib waler system is divided into two parts, and then the hinged rib pressure strip and inner lining plate are removed in sequence.

[0067] After the entire formwork removal work of the curved wall is completed, the concrete, mud and other dirt scattered on the surface of the inner lining plate and rib pressure strip need to be cleaned up, and the deformed or damaged parts need to be repaired or replaced so that they can be recycled and reused.

[0068] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A curved wall formwork support system, characterized in that: include: The inner lining plate (1) is provided in two sets corresponding to the two side walls of the wall to be poured in the normal direction, and an arc-shaped pouring space (10) is formed between the two sets of inner lining plates (1). A shaping component is provided on the outer side of each of the two sets of inner lining plates, and each inner lining plate includes at least one set of the shaping component in the vertical direction. The shaping component adjusts and limits the curvature of the inner lining plate (1). The two sets of shaping components are a first shaping component (5) and a second shaping component (6). The length of the first shaping component (5) corresponding to the casting space is greater than the length of the second shaping component (6) corresponding to the casting space. The first shaping component (5) presses the inner lining from the outer bending side. The protective plate bends inward, and the second shaping component (6) bends outward from the inner bending side of the inner lining protective plate; the first shaping component (5) and the second shaping component (6) have the same structure but different lengths; the first shaping component / second shaping component includes a rib pressure band, a prestressed strut (7) and a prestressed component (8), the rib pressure band is attached to the outer wall surface of the inner lining protective plate (1), and prestressed components (8) are respectively provided at both ends of the rib pressure band, and the prestressed components are connected to the fastening connection component (4); The prestressed strut (7) is an elastic rod structure. The strut of the prestressed strut (7) is attached to the side of the rib pressure band away from the casting space. The two sets of prestressed components are respectively set at one end of the prestressed strut (7), and the displacement adjustment of the two ends of the prestressed strut relative to the prestressed components produces bending deformation. The prestressed component (8) includes a connecting seat (11) and an adjusting component (12). The connecting seat (11) is connected to the end of both the rib pressure band and the fastening connecting component (4). The end of the prestressed strut (7) moves through the connecting seat and is set with There is an adjusting component (12) which adjusts the length of the prestressed strut (7) extending out of the connecting seat (11); the length of the prestressed strut (7) between the two connecting seats (11) is adjusted by two sets of adjusting components, and the prestressed strut (7) undergoes bending deformation adjustment under the pulling action of the fastening connection assembly (4); the rib pressure band includes several chain links (16), and several chain links (16) are hinged end to end to form a chain structure that can be bent, and two adjacent chain links (16) can be detached; Fastening connection component (4), the fastening connection component (4) is located outside the casting space and is arranged in the wall thickness direction of the casting space, and the shaping components located on both sides of the casting space are fastened by the fastening connection component.

2. The arc-shaped wall formwork support system according to claim 1, characterized in that: The pouring space (10) extends in an arc shape within the transverse extension surface of the wall.

3. The arc-shaped wall formwork support system according to claim 1, characterized in that: The prestressed strut (7) has an external thread section (15) at its end. The adjusting member (12) is an adjusting nut that matches the external thread section (15). The adjusting nut is circumferentially movable and axially fixed to the connecting seat.

4. The arc-shaped wall formwork support system according to claim 1, characterized in that: The connecting seat (11) includes a first connecting seat (13) and a second connecting seat (14). The first connecting seat and the second connecting seat are arranged intersectingly. The prestressed strut (7) passes through the first connecting seat (13). The second connecting seat is detachably connected to the fastening connection assembly (4).

5. The arc-shaped wall formwork support system according to claim 1, characterized in that: It also includes a traction mechanism (20), which is disposed between two sets of fastening connection components (4) and extends through the casting space (10). The traction mechanism (20) pulls the shaping components located on both sides of the casting space (10).

6. A construction method for an arc-shaped wall formwork support system according to any one of claims 3-5, characterized in that: Includes the following steps: S1: Based on the drawings, locate and lay out the curved wall to be constructed and pre-embed the wall reinforcement. S2: Determine the length of the rib pressure strip and prestressed strut in the first and second shaping components according to the length of the outer and inner curved sides of the wall to be constructed; S3: Insert both ends of the prestressed strut into the connecting seats in the corresponding first shaping component / second shaping component, and pre-tighten the prestressed strut and connecting seats by adjusting the component; The first and second shaping components are obtained; S4: Place the first shaping component and the second shaping component corresponding to the outer and inner curved sides of the wall, and connect them through two sets of fastening connection components to form a closed loop structure; S5: Place the two sets of inner lining plates corresponding to the outer and inner curved sides of the casting space, respectively, and place the two sets of inner lining plates inside the closed-loop structure. S6: The first shaping component is locked and fixed by two sets of fastening connection components, so that the first shaping component presses the inner lining plate from the outer bending side to the inner bending side, and the second shaping component supports the inner lining plate from the inner bending side to the outer bending side, thereby forming a casting space. S7: Adjust the adjusting parts of the first shaping component and the second shaping component respectively to make the prestressed strut bend slightly adjusted until the arc curvature of the two sets of inner lining plates is consistent with the positioning line. S8: Side guard plates are placed on the two transverse opening sides of the pouring space, and the side guard plates and inner lining guard plates are used to enclose the pouring cavity with a circumferentially closed and top-open structure. S9: Inject concrete into the pouring cavity and cure it, and remove the wall formwork support system after the wall curing is completed.

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