Formwork structure suitable for reinforced concrete structure with variable-diameter cross section

Abstract

The utility model discloses a template structure suitable for a reinforced concrete structure with a variable diameter section, which comprises wall body templates arranged on the inner side and the outer side of a building wall body, the wall body template on each side is formed by splicing a plurality of template panels, each template panel is provided with two female templates, a middle template is arranged between the two female templates, and the middle template is connected with the wall body template on the inner side and the wall body template on the outer side of the building wall body. The middle template and the female template are partially overlapped, and the overlapped parts are movably connected through a connecting device; the connecting device comprises connecting webs vertically extending on the side, opposite to the wall, of the female formwork, every two adjacent connecting webs are connected through a horizontally-arranged guide pipe, a reinforcing web parallel to the connecting webs is arranged on the side, opposite to the wall, of the middle formwork, and connecting pieces connected with the guide pipes are arranged on the reinforcing webs. According to the utility model, the middle template is arranged between the two female templates and extends between the two adjacent female templates, so that the template is suitable for a conical reinforced concrete structure with a circular cross section, the diameter of the cross section is changed, and the cross section is transited to a polygonal cross section with a fillet area.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sheet template for producing concrete building cylinder, especially to a template structure suitable for variable-diameter reinforced concrete structure. BACKGROUND

[0002] The existing slip form system mainly comprises a template system, an operation platform system and a hydraulic lifting system, wherein the template system comprises a template and a surrounding ring, the template bears the side pressure, impact force of the concrete and the friction resistance between the concrete and the template during the slip-up, and makes the concrete form according to the designed cross-sectional shape; the surrounding ring keeps the assembled planar shape of the template, and connects the template and the lifting frame into a whole. The above template structure is usually fixed, and the replacement or insertion of the intermediate template during the lifting of the slip form system can only be realized by disassembling the whole template panel. It is proved that the existing sheet template is too complicated in processing and adapting to the large-diameter change or the strong wall curvature. Moreover, the existing sheet template can cause the concrete leakage at the overlapping edge because the intermediate template on one side of the wall overlaps with the adjacent mother template. SUMMARY

[0003] The utility model solves the technical problem of the prior art, and provides a template structure suitable for variable-diameter reinforced concrete structure, which has reasonable design and high adaptability to different diameter changes and structures.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A template structure suitable for variable-diameter reinforced concrete structure, characterized in that the structure comprises wall templates arranged on the inner side and the outer side of the building wall, the wall templates on each side are spliced by a plurality of template panels, each template panel is provided with two mother templates, an intermediate template is arranged between the two mother templates, the intermediate template partially overlaps with the mother templates, a connecting device is arranged at the overlapping position, and the intermediate template and the mother templates are movably connected through the connecting device.

[0006] The connecting device comprises a connecting web plate vertically extending on the side of the mother template away from the wall, adjacent connecting web plates are connected through horizontally arranged guide pipes, a reinforcing web plate is arranged on the side of the intermediate template away from the wall and parallel to the connecting web plate, and the reinforcing web plate is provided with a connecting piece connected with the guide pipe.

[0007] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the connecting piece is a hook-shaped connecting piece or a clamp-type connecting piece, the hook-shaped connecting piece is provided with a flat plate arranged in parallel with the connecting web, one side of the flat plate is provided with a hook for hanging on the guide pipe, the flat plate is partially overlapped with the connecting web, a groove-shaped opening is arranged in the overlapped area, a fastener is arranged in the groove-shaped opening, a stop guide rail is arranged on the flat plate and is in sliding cooperation with the connecting web.

[0008] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the groove-shaped opening is arranged in a plurality of numbers, and the plurality of groove-shaped openings are arranged vertically and side by side.

[0009] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the connecting device of the wall formwork arranged in the strong curvature area of the building is provided with a yoke assembly for adjusting the stress condition of the wall, the yoke assembly comprises a supporting yoke arranged on the outer side of the connecting web, connecting rods are arranged between adjacent supporting yokes, a bracket is arranged on the outer side wall of the supporting yoke and is used for allowing the connecting rod to pass through, a clamping support is arranged on the middle part of the connecting rod and is used for abutting on the guide pipe, the clamping support is combined with the force coupling of the adjacent supporting yoke, and force is transmitted to the sheet formwork, and an upper supporting plate and a lower supporting plate for supporting the connecting web are arranged on the inner side wall of the supporting yoke.

[0010] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the guide pipe on the same formwork panel is arranged in a plurality of numbers, and the plurality of guide pipes are arranged on the upper part, the middle part and the lower part of the formwork panel, the installation strength of the formwork panel at each splicing position is ensured, the guide pipes on adjacent formwork panels are arranged in a staggered mode, a large degree of overlap can be realized, and especially in the case that the diameter of the conical structure is greatly reduced.

[0011] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the flat steel strip for reinforcement is welded at the vertical edge of the middle formwork, so that complete reinforcement in the vertical direction can be realized, sufficient flexibility in the horizontal direction is ensured, and therefore the middle formwork and the female formwork can adapt to different curvatures of the concrete wall.

[0012] The technical problems to be solved by the utility model can also be solved by the following technical scheme, the female formwork is a plate made of spring steel, the curvature radius of the female formwork is in an initial position, that is, before being installed in the formwork site, is on the side facing the wall, and therefore the curvature radius is smaller than the minimum expected radius of the inner surface of the building wall; the design advantage of the female formwork made of spring steel lies in that a negative radius can also be realized, and this design means that the outer vertical edge of the female formwork is always in strong force cooperation with the corresponding middle formwork, so that a substantially burr-free transition is formed on the visible surface of the concrete wall.

[0013] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the width of the mother template is 2 to 3 times the width of the intermediate template. To improve the flexibility of the thin-plate template in terms of interchangeability and adaptability to curvature radii, this ensures that when the diameter decreases, the intermediate template that automatically slides behind the mother template is completely covered. The covered intermediate template can be released and removed from the corresponding mother template without affecting the sliding process. Based on this design principle, if the diameter increases due to cantilever, triangular bracket, or other similar issues, a new intermediate template can be inserted behind the mother template in a timely manner. Adjacent intermediate templates are fixed together in a horizontally detachable manner to ensure they can move together within the template area and that the butt joints fit tightly.

[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the intermediate template is composed of several long strip templates spliced ​​together, and the cross-section of the long strip template is an I-shaped part, which is convenient for installation.

[0015] Compared with existing technologies, this utility model, by setting an intermediate template between two mother templates, extending between two adjacent mother templates, and connecting the corresponding mother templates together, is suitable for, for example, conical reinforced concrete structures with circular cross-sections. It can change the diameter of the cross-section and transition to a polygonal cross-section with rounded corners. A connecting device consisting of guide pipes, connecting webs, and reinforcing webs is used to guide the intermediate template and adjust the curvature of each template, making it particularly suitable for handling and adapting to wall template deformation in cases of large diameter changes or strong wall curvature. The template structure of this utility model, suitable for reinforced concrete structures with variable diameter cross-sections, has a simple principle and reasonable structure, and is particularly suitable for tall conical buildings constructed using the sliding formwork method. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the template structure described in this utility model;

[0017] Figure 2 This is a structural diagram showing the connection of the web plates;

[0018] Figure 3 Assembly drawing for reinforcing the web and connecting parts;

[0019] Figure 4 A structural diagram of the connection device for the wall formwork in the high curvature area of ​​the building;

[0020] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0021] Figure 6 This is a structural diagram of the supporting yoke;

[0022] Figure 7 This is a deformation diagram of the connecting web.

[0023] In the figure: 1 - female template, 2 - intermediate template, 3 - guide tube, 4 - connecting web, 5 - reinforcing web, 6 - connecting piece, 7 - flat bar, 8 - perforation, 9 - slot-like opening, 10 - hook, 11 - stop rail, 12 - building area of strong curvature, 13 - support yoke, 14 - clamping support, 15 - connecting rod, 16 - bracket, 17 - upper support plate, 18 - lower support plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0025] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] Reference Figures 1-7 A template structure suitable for variable-diameter cross-section reinforced concrete structure, the structure includes wall templates arranged on the inner side and the outer side of the building wall, the wall templates on each side are spliced by a plurality of template panels, each template panel is provided with two female templates 1, an intermediate template 2 is arranged between the two female templates 1, the intermediate template 2 partially overlaps the female templates 1, a connecting device is arranged at the overlapping position, and the intermediate template 2 and the female templates 1 are movably connected through the connecting device;

[0027] The connecting device includes a connecting web 4 vertically extending on the side of the female template 1 away from the wall, adjacent connecting webs 4 are connected through horizontally arranged guide tubes 3, that is, perforations 8 are formed in the connecting webs 4 for the guide tubes to pass through, a reinforcing web 5 is arranged on the side of the intermediate template 2 away from the wall and parallel to the connecting web 4, and the reinforcing web 5 is provided with a connecting piece 6 connected with the guide tube 3. The guide tubes 3 on the same template panel are provided with a plurality of guide tubes, and the plurality of guide tubes are arranged at the upper part, the middle part and the lower part of the template panel respectively, and the guide tubes on adjacent template panels are arranged in an up-down staggered manner.

[0028] The connecting piece 6 is a hook-shaped connecting piece or a clamp-type connecting piece, the hook-shaped connecting piece is provided with a flat plate 6 arranged in parallel with the connecting web, one side of the flat plate 6 is provided with a hook 10 hung on the guide pipe 3, the flat plate 6 partially overlaps the connecting web 4, the overlapping area is provided with a slot-shaped opening 9, a fastener is arranged at the slot-shaped opening 9, a stop rail 11 slidingly matched with the connecting web is arranged on the flat plate 6, and the slot-shaped opening 9 is provided with a plurality of slot-shaped openings arranged vertically and side by side.

[0029] The connecting device of the wall formwork arranged at the strong curvature area 12 of the building is provided with a yoke assembly for adjusting the stress condition of the wall, the yoke assembly comprises support yokes 13 arranged at the outer side of the connecting web 4, connecting rods 15 arranged horizontally are arranged between the adjacent support yokes 13, brackets 16 for the connecting rods 15 to pass through are arranged on the outer side walls of the support yokes 13, clamping supports 14 abutting on the guide pipes are arranged in the middle of the connecting rods 15, the clamping supports 14 are combined with the force coupling of the adjacent support yokes 13 to transmit force to the sheet formwork, upper support plates 17 and lower support plates 18 for supporting the connecting web 4 are arranged on the inner side walls of the support yokes 13, a step matched with the upper support plate is arranged on the upper portion of the connecting web 4, and the structure of the step can be seen from Figure 2 The connecting rods 15 are provided with a plurality of connecting rods, and the plurality of connecting rods are arranged at the upper portion, the middle portion and the lower portion of the support yoke 13.

[0030] A thin steel bar 7 for reinforcement is welded at the vertical edge of the intermediate formwork 2.

[0031] The female formwork 1 is a plate made of spring steel, the width of the female formwork is 2-3 times the width of the intermediate formwork, the intermediate formwork is spliced by a plurality of long strip-shaped formworks, and the female formwork and the intermediate formwork both adopt a sheet structure.

[0032] The working principle of the formwork structure suitable for the variable-diameter cross-section reinforced concrete structure is that a piece of intermediate formwork is inserted between two adjacent female formworks in the formwork area in an overlapping manner, the intermediate formwork is spliced by a plurality of long strip-shaped formworks, so that the width of the intermediate formwork is adjusted according to the use condition and the number of the long strip-shaped formworks. When the sliding formwork system provided with the formwork structure is lifted for a conical structure, the continuous reduction of the diameter of the structure is compensated by the intermediate formwork of the formwork area, the intermediate formwork is overlapped on the wall side surface of the female formwork in a tangential manner, and the vertical edge area of the intermediate formwork is inclined outward in the formwork.

[0033] The formwork structure suitable for the variable-diameter cross-section reinforced concrete structure is further described as follows:

[0034] First, the middle form is guided and the curvature of the individual forms is adjusted by means of guide tubes, connecting webs and reinforcing webs. The guide tubes are the actual load-bearing elements of the form. Depending on the height of the mother form or the middle form, several guide tubes can be provided, for example three. The guide tubes of adjacent form panels are offset in height, so that they can overlap to a large extent, especially in the case of a conical structure with a greatly reduced diameter.

[0035] Second, the connecting elements on the reinforcing webs of the middle form can be designed as hooks, enabling a detachable connection. In order to avoid the loss of individual components, a hinge and a lockable design can be used. In addition, a clamp-like fastener similar to the guide tubes can be used. The radial fastening between the reinforcing web and the guide tube is essential for ensuring the optimum transmission of the bending forces. A secure pin connection between the hooks and the reinforcing webs can also be used. The detachable connecting elements can also be designed as lockable brackets, openable clamps or flat bars that span several or all guide tubes. The guide tubes can be molded tubes, hollow rods or slidable steel tubes. For example, a clamping device made of steel wire can be provided for the mother form instead of a vertical reinforcing web, which engages approximately at the center and is detachably fixed to the profiled tube by means of a ring lock.

[0036] Third, the vertical edges of the middle form also use a butt joint, so that no concrete paste is formed in this area. In terms of vertical reinforcement, the middle form is designed as a steel sheet with a flat steel bar welded at its vertical edge. This enables complete reinforcement in the vertical direction and ensures sufficient flexibility in the horizontal direction, so that the middle form and the mother form can adapt to different curvatures of the concrete wall. In order to facilitate the replacement of the middle form, usually only the central reinforcing bar of the middle form is detachably connected to the guide tube, while the flat bar of the vertical edge ends shortly after the installed guide tube.

[0037] Fourth, in order to improve the force transmission over the entire form height, several height-offset connecting struts are provided in this area and overlap with the adjacent forms. The connecting struts are designed to be rigid and resistant to bending in order to transmit forces. The profile of the guide tubes can be strip-shaped or mesh-like, with the outer contour preferably being designed in such a way that it moves in the horizontal direction in an automatically adjusted manner. The guide tubes are preferably designed as steel tubes with an outer diameter of 30 to 40 mm. The thickness of the guide tubes should provide sufficient bending flexibility for the plate-like bending form area.

[0038] The present application can produce a conical structure with a cross section approximately circular without complex adjustment and spindle structure. Only in the case of a very large radius of curvature, it is recommended to use a tensioning support as a support. Due to the design of the master template and the intermediate templates, when the diameter is reduced, the intermediate templates are pushed horizontally behind the master template in an automatic adjustment manner, thus, once the fixation with the guide tube is released, the corresponding intermediate template can be simply removed and pulled out upwards or downwards. In this way, the concrete residues at the overlap of the master template can also be cleaned, thus preventing the formation of ridges or wall protrusions at these locations. The blunt joint of the vertical edges of the intermediate templates does not leave any traces or steps on the visible surface of the concrete wall.

[0039] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A formwork structure suitable for use in a variable cross-section reinforced concrete structure, characterised in that, The structure comprises wall formworks arranged on the inner side and the outer side of the building wall, the wall formworks on each side are spliced by a plurality of formwork panels, each formwork panel is provided with two female formworks, an intermediate formwork is arranged between the two female formworks, the intermediate formwork partially overlaps the female formworks, a connecting device is arranged at the overlapping position, and the intermediate formwork and the female formwork are movably connected through the connecting device; The connecting device comprises a connecting web plate extending perpendicularly on the side of the female formwork away from the wall, adjacent connecting web plates are connected through horizontally arranged guide pipes, a reinforcing web plate is arranged on the side of the intermediate formwork away from the wall and parallel to the connecting web plate, and the reinforcing web plate is provided with a connecting piece connected with the guide pipe.

2. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterised in that, The connecting piece is a hook-shaped connecting piece or a clamp-type connecting piece, the hook-shaped connecting piece is provided with a flat plate arranged parallel to the connecting web plate, a hook is arranged on one side of the flat plate and hung on the guide pipe, the flat plate partially overlaps the connecting web plate, a groove-shaped opening is arranged at the overlapping area, a fastener is arranged in the groove-shaped opening, and a stop guide rail that is in sliding fit with the connecting web plate is arranged on the flat plate.

3. A formwork structure suitable for use with a variable cross-section reinforced concrete structure according to claim 2, characterised in that, The groove-shaped opening is provided with a plurality of groove-shaped openings arranged vertically and side by side.

4. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterized in that, A yoke assembly for adjusting the stress condition of the wall is arranged on the connecting device of the wall formwork arranged in the high-curvature area of the building, the yoke assembly comprises a supporting yoke arranged on the outer side of the connecting web plate, connecting rods are arranged between adjacent supporting yokes, a bracket is arranged on the outer side wall of the supporting yoke and used for allowing the connecting rod to pass through, a clamping support is arranged on the middle part of the connecting rod and used for abutting against the guide pipe, the clamping support is coupled with the force of the adjacent supporting yoke, and force is transmitted to the sheet formwork, and an upper supporting plate and a lower supporting plate for supporting the connecting web plate are arranged on the inner side wall of the supporting yoke.

5. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterized in that, The guide pipes on the same formwork panel are provided with a plurality of guide pipes, and the plurality of guide pipes are arranged at the upper part, the middle part and the lower part of the formwork panel respectively, and the guide pipes on adjacent formwork panels are arranged in an up-and-down staggered manner.

6. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterised in that, A flat steel bar for reinforcement is welded at the vertical edge of the intermediate formwork.

7. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterised in that, The female formwork is a plate made of spring steel.

8. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1 or 7, characterised in that, The width of the female formwork is 2-3 times the width of the intermediate formwork.

9. A formwork structure suitable for use in a variable cross-section reinforced concrete structure according to claim 1, characterised in that, The intermediate formwork is spliced by a plurality of long strip-shaped formworks.

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