Giant column steel form

Abstract

The utility model relates to the field of engineering template structure discloses a giant column steel template, including at least two groups of templates, each group of templates includes several height direction link's template, and the inside joint of two adjacent templates is provided with concave-convex rebates, and the outside of each template is provided with at least two connecting lug, and the connecting lug of two adjacent groups of templates is connected through connecting screw rod, the utility model has the advantages of being provided with concave-convex rebates at the inside joint of two adjacent templates, limiting the misplacement of adjacent templates in horizontal or vertical direction, ensuring that template edges are aligned, also making adjacent templates form integral connection, making the joint form physical seal, greatly reducing the gap, preventing cement slurry leakage from the source, ensuring concrete forming quality, also setting up the outside of each template with at least two connecting lug, realizing that the connecting lug of two adjacent groups of templates is connected through connecting screw rod, forming the overall template of frame shape, reducing installation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of engineering formwork structures, specifically to a giant column steel formwork. Background Technology

[0002] With the acceleration of urbanization and the development of building technology, super high-rise buildings and large public buildings (such as stadiums, convention centers, and super-large factories) are increasing. To meet the structural requirements of ultra-large spans, ultra-high load-bearing capacity, wind resistance, and earthquake resistance, these buildings use mega-columns as core vertical load-bearing components. Their cross-sectional dimensions far exceed those of traditional columns (typically, the side length or diameter of the cross-section can reach 1-5 meters, or even larger), and they must bear the enormous vertical loads, horizontal wind loads, and seismic forces transmitted from the superstructure.

[0003] Current mega-column steel formwork is typically composed of multiple unit formwork panels spliced ​​together. Grout leakage is common at the joints, causing honeycomb and pitting on the column surface, and even affecting structural density. This necessitates manual repairs, increasing rework costs. Excessive height differences at the joints result in uneven surfaces and distorted lines on the finished mega-column, affecting the building's appearance (especially noticeable in fair-faced concrete mega-columns). Utility Model Content

[0004] The technical problem to be solved by this utility model is that the joints of existing mega-column formwork leak grout, causing honeycomb on the main surface. The purpose is to provide a mega-column steel formwork that ensures the alignment of the formwork edges by using tongue and groove joints on the inner side of the formwork, and also makes adjacent formworks form an integral connection, so as to form a physical seal at the joints, prevent cement grout leakage, and ensure the quality of concrete molding.

[0005] This utility model is achieved through the following technical solution: A giant column steel formwork includes at least two sets of formwork, each set of formwork includes several formworks connected in the height direction, the inner joint of two adjacent formworks is provided with tongue and groove, and at least two connecting lugs are provided on the outer side of each formwork, and the connecting lugs of two adjacent sets of formworks are connected by connecting bolts.

[0006] The beneficial effects of this utility model are that by connecting each set of templates along the height direction and setting tongue and groove joints on the inner side of adjacent templates, the tongue and groove joints limit the misalignment of adjacent templates in the horizontal or vertical direction, ensuring the alignment of template edges. It also makes adjacent templates form an integral connection, and the joints form a physical seal, preventing cement slurry leakage from the source and ensuring the quality of concrete molding. In addition, each template is provided with at least two connecting lugs on the outer side, so that the connecting lugs of adjacent templates can be connected by connecting bolts to form a frame-shaped integral template, reducing the difficulty of installation.

[0007] In some embodiments, the system includes a first set of templates, a second set of templates, a third set of templates, and a fourth set of templates. These four sets of templates are connected to form a rectangular frame. The first set of templates and the third set of templates are positioned opposite each other, and their structures and dimensions are identical. Both the first set of templates and the third set of templates include several first templates. By positioning the first set of templates and the third set of templates opposite each other, and ensuring that their structures and dimensions are identical, the system ensures that the cross-sectional dimensions, flatness, and verticality on both sides of the two sets of templates are completely consistent. This avoids asymmetry in the components caused by differences in the templates, and is particularly suitable for piers in scenarios requiring high symmetry, reducing uneven stress or aesthetic defects caused by asymmetry later on.

[0008] In some embodiments, both the second and fourth sets of templates include several second templates. The second and fourth sets of templates are arranged opposite to each other, and the two sets of templates have identical structures and dimensions. The first template is rectangular and has curved structures on both sides, which form the chamfers of the template assembly. The second template is rectangular and the curved structures are connected to the sides of the second template. By directly using the curved structures on both sides of the first template as the chamfers of the template assembly, the edge shape of the concrete component can be precisely controlled after being connected to the sides of the second template. Manual grinding of the chamfers is unnecessary after pouring, and the chamfer dimensions are ensured through one-time forming of the curved structure of the template.

[0009] In some embodiments, radial reinforcing plates are provided on the outer sides of both the first and second templates. By providing radial reinforcing plates, the strength and stiffness of the first and second templates are increased to meet the strength and stiffness requirements of the mega-column formwork.

[0010] In some embodiments, several connecting lugs are respectively disposed at both ends of the corresponding radial reinforcing plates. Each connecting lug is provided with a connecting hole. The connecting screw passes through the corresponding connecting lugs located on the first template and the second template respectively and is screwed into the locking nut. The locking nut abuts against the corresponding connecting lug. Connecting the templates with connecting screws ensures the accuracy and stability of template assembly, reduces construction difficulty, and also facilitates template reuse.

[0011] In some embodiments, the connecting lug has a trapezoidal cross-section, the connecting hole passes through two opposite sides, and the connecting screw is inclinedly connected at the corner of the two sets of templates, connecting the first and second templates located on the same plane. The arc-shaped structure abuts against the two sides of the second template. The connecting screw transfers the load to the template through the connecting lug, avoiding load concentration on the template panel (especially the weak edges of the arc-shaped structure), reducing damage such as template dents and cracks. Furthermore, by inclinedly setting the connecting screw at the corner, the first and second templates are connected obliquely, so that the direction of force and the lateral pressure (such as the thrust during concrete pouring) on ​​the template form an angle difference, which can decompose part of the load, enhance the shear and tensile strength of the corner, and prevent the template from loosening or deforming under stress.

[0012] In some embodiments, sealing gaskets are provided at the connection points between the arc-shaped structure and both sides of the second template. These gaskets fill the minute gaps (including gaps caused by processing errors or assembly deformation) between the arc-shaped structure and the second template. Under the pre-tightening force of the screw connection, the gaskets are compressed, forming a tightly fitting sealing interface. Compared to simple metal-to-metal contact, this significantly improves sealing reliability and prevents grout leakage during concrete pouring.

[0013] In some embodiments, several evenly distributed vertical reinforcing ribs are provided on the outer sides of both the first template and the second template. The presence of these vertical reinforcing ribs further increases the strength and rigidity of the first template and the second template.

[0014] In some embodiments, the upper inner side of both the first template and the second template is provided with a recessed platform, and the lower inner side of both templates is provided with a boss that cooperates with the recessed platform. The recessed platform and the boss constitute the tongue and groove joint.

[0015] In some embodiments, several pin holes are evenly distributed on the sidewalls of the first and second templates, and elastic sealing strips are provided at the pin connections of adjacent templates on the same set of templates. By utilizing the excellent deformation capability of the elastic sealing strip (such as rubber or EPDM material), the joint gaps between the sidewalls of adjacent templates are tightly filled, and the evenly distributed pin holes ensure that the sealing strip is subjected to uniform compression force, avoiding sealing failure due to insufficient local pressure.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. Tongue and groove joints are provided at the inner joints of two adjacent templates to restrict the misalignment of adjacent templates in the horizontal or vertical direction, ensure the alignment of template edges, and form an integral connection between adjacent templates, so as to form a physical seal at the joint, prevent cement slurry leakage from the source, and ensure the quality of concrete molding.

[0017] 2. The arc-shaped structures on both sides of the first template are directly used as the chamfers of the template components. This allows for precise control of the corner shape of the concrete components after connection with the second template. There is no need to manually grind the chamfers after pouring. The arc-shaped structure of the template is formed in one step, ensuring the chamfer dimensions.

[0018] 3. By setting the connecting bolts at an angle at the corner, the first and second templates are connected at an angle, so that the direction of the force is different from the lateral pressure (such as the thrust during concrete pouring) borne by the template. This can decompose part of the load, enhance the shear and tensile strength of the corner, and prevent the template from loosening or deforming when under stress. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a top view of the present invention after the explosion; Figure 2 This is a top view of the present invention; Figure 3 This is a structural diagram of the present invention.

[0020] The attached diagram shows the markings and corresponding component names: First template 10, second template 11, sealing washer 21, pin hole 22, connecting lug 23, connecting hole 24, connecting screw 25, locking nut 26, radial reinforcing plate 27, vertical reinforcing rib 28, countersunk platform 29. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0022] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" 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 utility model 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 limiting the scope of protection of this utility model.

[0024] The terms "first," "second," etc., used in this utility model are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0025] Example like Figures 1-3 As shown, this embodiment provides a giant column steel formwork, including at least two sets of formwork. Each set of formwork includes several formworks connected in the height direction. A tongue-and-groove joint is provided at the inner joint of adjacent formworks. At least two connecting lugs 23 are provided on the outer side of each formwork. The connecting lugs 23 of adjacent sets of formworks are connected by connecting bolts 25. The tongue-and-groove joint restricts the misalignment of adjacent formworks in the horizontal or vertical direction, ensuring the alignment of the formwork edges. It also forms an integral connection between adjacent formworks, creating a physical seal at the joint, significantly reducing gaps, preventing cement slurry leakage from the source, and ensuring the quality of concrete molding. Furthermore, the presence of at least two connecting lugs 23 on the outer side of each formwork allows for the connection of the connecting lugs 23 of adjacent sets of formworks via connecting bolts 25, forming a frame-shaped integral formwork, reducing installation difficulty.

[0026] See Figures 1-3The system comprises four sets of templates: a first set, a second set, a third set, and a fourth set. These four sets of templates, when connected, form a rectangular frame. The first and third sets of templates are positioned opposite each other, and their structures and dimensions are identical. Both the first and third sets of templates include several individual first templates 10. By positioning the first and third sets of templates opposite each other and ensuring their identical structures and dimensions, the system guarantees that the cross-sectional dimensions, flatness, and verticality on both sides of the two sets of templates are completely consistent. This avoids asymmetry in the components caused by differences in the templates, making it particularly suitable for piers in scenarios requiring high symmetry, and reducing uneven stress or aesthetic defects caused by asymmetry later on.

[0027] See Figures 1-3 Both the second and fourth sets of templates include several second templates 11. The second and fourth sets of templates are arranged opposite each other, and their structures and dimensions are identical. The first template 10 is a rectangular plate with curved structures on both sides, forming the chamfers of the template assembly. The second template 11 is also rectangular, with the curved structures connecting to its sides. By directly using the curved structures on both sides of the first template 10 as the chamfers of the template assembly, the edge shape of the concrete component can be precisely controlled after connection to the sides of the second template 11. Manual chamfering after pouring is unnecessary; the curved structure of the template ensures the chamfer dimensions are achieved in one step.

[0028] See Figures 1-3 Radial reinforcing plates 27 are provided on the outer sides of both the first template 10 and the second template 11. By providing radial reinforcing plates 27, the strength and rigidity of the first template 10 and the second template 11 are increased to meet the strength and rigidity requirements of the mega-column formwork.

[0029] See Figures 1-3 Several connecting lugs 23 are respectively disposed at both ends of the corresponding radial reinforcing plates 27. Each connecting lug 23 is provided with a connecting hole 24. The connecting screw 25 passes through the corresponding connecting lugs 23 located on the first template 10 and the second template 11 respectively and is screwed into the locking nut 26. The locking nut 26 abuts against the corresponding connecting lug 23. The templates are connected by connecting screws 25 to ensure the accuracy and stability of template assembly, reduce construction difficulty, and facilitate template reuse. The connecting lugs 23 are forged from Q235 steel with a right-angled trapezoidal cross section: upper base 80mm, lower base 120mm, height 100mm, and thickness 20mm. They are fully welded to the radial reinforcing plates 27 (weld height 10mm, post-weld flaw detection shows no porosity or cracks). The diameter of the connecting hole 24 is 24mm, and the center of the hole is ≥30mm from the edge of the lug to avoid stress concentration.

[0030] See Figures 1-3The connecting lug 23 has a trapezoidal cross-section, the connecting hole 24 passes through the two opposite sides, and the connecting screw 25 is inclinedly connected at the corner of the two sets of templates, connecting the first template 10 and the second template 11 located on the same plane. The arc-shaped structure abuts against the two sides of the second template 11. The connecting screw 25 transfers the load to the template through the connecting lug 23, avoiding the load concentration on the template panel (especially the weak edge of the arc-shaped structure), reducing damage such as template dents and cracks. Furthermore, by inclinedly setting the connecting screw 25 at the corner, the first template 10 and the second template 11 are connected obliquely, so that the direction of the force is different from the lateral pressure (such as the thrust during concrete pouring) borne by the template, which can decompose part of the load, enhance the shear and tensile strength of the corner, and prevent the template from loosening or deforming under stress. The connecting screw 25 uses a grade 8.8 high-strength bolt with a diameter of 20mm. The length is determined according to the thickness of the template (the length of the screw extending out of the locking nut 26 is 1-3 thread pitches); the screw at the corner has an inclination angle of 45° (angle with the template surface).

[0031] See Figures 1-3 Sealing gaskets 21 are provided at the connection points between the arc-shaped structure and both sides of the second template 11. These gaskets 21 fill the minute gaps (including gaps caused by processing errors and assembly deformation) between the arc-shaped structure and the second template 11. Under the pre-tightening force of the screw connection, the gaskets are compressed, forming a tightly fitting sealing interface. Compared to simple metal-to-metal contact, this significantly improves sealing reliability and prevents grout leakage during concrete pouring.

[0032] See Figures 1-3 Several evenly distributed vertical reinforcing ribs 28 are provided on the outer sides of both the first template 10 and the second template 11. By providing vertical reinforcing ribs 28, the strength and rigidity of the first template 10 and the second template 11 are further increased.

[0033] See Figures 1-3 The upper inner side of the first template 10 and the second template 11 are both provided with a recessed platform 29, and the lower inner side of both are provided with a boss that cooperates with the recessed platform 29. The recessed platform 29 and the boss constitute the tongue and groove joint.

[0034] See Figures 1-3 The first template 10 and the second template 11 have several pin holes 22 evenly distributed on their side walls. Elastic sealing strips are installed at the pin connections of adjacent templates on the same set of templates. By utilizing the excellent deformation capability of the elastic sealing strip (such as rubber or EPDM material), the joint gaps between the side walls of adjacent templates are tightly filled. The evenly distributed pin holes ensure that the sealing strip receives uniform pressure, avoiding sealing failure due to insufficient local pressure. See Figures 1-3Specifically, the pins of adjacent templates on the same set of templates are staggered to allow the templates to connect with the templates above and below. 5mm diameter aluminum blind pins are used, with a length of 12mm (ensuring 3mm remains after penetrating both layers of template sidewalls and sealing strips); the pin hole spacing is 100mm, and the pins of adjacent templates in the same set of templates are arranged in a staggered, quincunx pattern (vertical and horizontal rows of holes are staggered by 50mm) to avoid stress concentration at the joints. The panels of the first template 10 and the second template 11 use... Low-alloy high-strength structural steel, with a thickness of 8mm-12mm, ensures resistance to lateral pressure on concrete. No plastic deformation occurs under the action of the first template 10 and the second template 11. The dimensions of the recessed platform 29 on the upper inner side are: depth 15mm × width 30mm, and the dimensions of the boss on the lower inner side are: height 13mm × width 28mm (forming a 2mm gap with the recessed platform 29 to reserve space for sealant filling); the flatness tolerance of the mating surface between the recessed platform 29 and the boss is ≤0.5mm, ensuring that the vertical misalignment after splicing is ≤1mm.

[0035] The sealing gasket 21 is made of oil-resistant nitrile rubber with a rectangular cross-section: 20mm wide × 5mm thick. It is bonded to the mating surface of the arc-shaped structure using butyl rubber adhesive, with the compression controlled at 30%-50% (the thickness is retained at 3-3.5mm after pre-tightening). The elastic sealing strip at the pin connection is made of EPDM rubber with a circular cross-section (8mm in diameter). It is embedded in the U-shaped groove (4mm deep, 9mm wide) pre-set on the side wall of the template. When the pin passes through the center of the sealing strip, the rubber is squeezed to fill the gap, achieving a seal.

[0036] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A giant column steel formwork, characterized in that, It includes at least two sets of templates, each set of templates includes several templates connected in the height direction, the inner joint of two adjacent templates is provided with tongue and groove, and at least two connecting lugs are provided on the outer side of each template, and the connecting lugs of two adjacent sets of templates are connected by connecting screws.

2. The giant column steel formwork according to claim 1, characterized in that, It includes a first set of templates, a second set of templates, a third set of templates, and a fourth set of templates. The first set of templates and the third set of templates are set opposite to each other, and the two sets of templates have the same structure and size. Both the first set of templates and the third set of templates include several first templates.

3. The giant column steel formwork according to claim 2, characterized in that, Both the second and fourth sets of templates include several second templates. The second and fourth sets of templates are arranged opposite each other, and the two sets of templates have the same structure and size. The first template is rectangular and has arc-shaped structures on both sides. The arc-shaped structures form the chamfer of the template assembly. The second template is rectangular and the arc-shaped structures are connected to the two sides of the second template.

4. The giant column steel formwork according to claim 3, characterized in that, Both the first template and the second template have radial reinforcing plates on their outer sides.

5. The giant column steel formwork according to claim 4, characterized in that, Several connecting lugs are respectively disposed at both ends of the corresponding radial reinforcing plates. Each connecting lug is provided with a connecting hole. The connecting screw passes through the corresponding connecting lugs located on the first template and the second template respectively and is screwed into the locking nut. The locking nut abuts against the corresponding connecting lug.

6. The giant column steel formwork according to claim 5, characterized in that, The cross-section of the connecting lug is trapezoidal, the connecting hole passes through the two opposite sides, the connecting screw is inclinedly connected at the corner of the two sets of templates, connecting the first template and the second template located on the same plane, and the arc structure abuts against the two sides of the second template.

7. The giant column steel formwork according to claim 3, characterized in that, Sealing gaskets are provided at the connection points between the arc-shaped structure and both sides of the second template.

8. The giant column steel formwork according to claim 3, characterized in that, Several evenly distributed vertical reinforcing ribs are provided on the outer sides of both the first and second templates.

9. The giant column steel formwork according to claim 3, characterized in that, The upper inner side of both the first template and the second template is provided with a recessed platform, and the lower inner side of both templates is provided with a boss that cooperates with the recessed platform. The recessed platform and the boss constitute the tongue and groove joint.

10. The giant column steel formwork according to claim 3, characterized in that, The first and second templates have several pin holes evenly distributed on their side walls, and elastic sealing strips are provided at the pin connection points of adjacent templates on the same set of templates.

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