Fastener for side formwork of vertical cast-in-place concrete member
By using a combination of inner corner fasteners, outer fasteners and inner fasteners in the formwork fastening system, combined with the use of tie rod fastening components and rubber sheets, the quality problems existing in traditional formwork fastening methods in high-rise buildings are solved, achieving higher construction quality and cost-effectiveness.
Patent Information
- Application Number
- CN202421514975.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The traditional formwork fastening method has quality problems such as poor construction joints, leaking slurry, honeycomb squid surfaces, hollows and exposed ribs during the pouring process of concrete in high-rise buildings and complex structures. It is easy to cause misplaced stages under high casting pressure, affecting the aesthetics of the structure and mechanical properties.
Using a combination of inner corner fasteners, outer fasteners and inner fasteners, a stable fastening structure is formed through the first, second and third tie rod fastening components to ensure construction joint sealing, and a rubber sheet is provided on the fasteners to prevent slurry leakage.
The stability and sealing of the formwork system are achieved, the construction quality and applicability are improved, and the construction cost and post-maintenance needs are reduced.
Smart Images
Figure CN222962489U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of construction engineering, and particularly relates to a side form fastener for vertical cast-in-place concrete members. Background Art
[0002] In modern construction projects, especially during the concrete pouring process of complex structures such as high-rise buildings, elevator shafts, and stairwells, the fastening and stability of the formwork system are key factors to ensure construction quality and efficiency. Traditional formwork fastening methods often use simple supports such as wooden beams and tie rods. Although these methods can meet the basic construction requirements to a certain extent, problems such as poor joint tightness at construction joints and slurry leakage during concrete pouring frequently occur, resulting in common quality problems such as honeycombing, pitting, voids, and exposed reinforcement. In addition, the traditional method is prone to the phenomenon of offset under high pouring pressure, which not only affects the structural aesthetics but also may reduce the mechanical properties and service life of the building.
[0003] With the continuous progress of construction technology, various new formwork fasteners have emerged in the market, such as quick clamps and hydraulic fasteners. These devices have achieved certain results in improving construction efficiency and quality. However, these devices still have problems such as high cost, complex operation, and poor adaptability. Especially in the construction of special-shaped structures or narrow spaces, their application is limited.
[0004] Therefore, in view of the deficiencies of the prior art, the utility model proposes a side form fastener for vertical cast-in-place concrete members, aiming to provide a fastening device with a simple structure, convenient operation, low cost, and capable of effectively improving the stability and sealing performance of the formwork system. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a side form fastener for vertical cast-in-place concrete members, which is composed of an inner corner fastener, an outer fastener, and an inner fastener. A stable fastening structure is formed through three tie rod fastening components, and at the same time, the sealing performance of the construction joint is ensured, and it has strong applicability and flexibility.
[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0007] The utility model relates to a side form fastener for vertical cast-in-place concrete components, which includes an inner corner fastener, an outer fastener and an inner fastener respectively used for clamping an outer formwork and an inner formwork on the outside; the outer fastener, the inner fastener and the inner corner fastener are respectively located on the outer surface, the top surface and the internal angle of the cast-in-place concrete component; the outer fastener and the inner fastener are connected and fastened through a first tie rod fastening assembly; the outer fastener and the inner corner fastener are connected and fastened through a second tie rod fastening assembly; the inner fastener and the inner corner fastener are connected and fastened through a third tie rod fastening assembly.
[0008] As a preferred technical solution of the utility model, a first rubber sheet is arranged between the outer fastener and the outer surface of the cast-in-place concrete component; the outer fastener includes a rectangular plate body; the first rubber sheet is placed at the lower half of the inner side surface of the rectangular plate body during installation; a step groove for installing the outer formwork is formed in the upper half of the inner side surface of the rectangular plate body; the sum of the depth of the step groove and the thickness of the first rubber sheet is the same as the thickness of the outer formwork; a row of first through round holes for connecting and cooperating with the second tie rod fastening assembly are formed in the first rubber sheet and the lower half of the rectangular plate body together; a row of second through round holes for cooperating with the first tie rod fastening assembly are formed in the upper half of the rectangular plate body.
[0009] As a preferred technical solution of the utility model, a second rubber sheet is arranged between the bottom surface of the inner fastener and the top surface of the cast-in-place concrete component; the inner fastener includes an L-shaped plate body; a row of third through round holes for cooperating with the first tie rod fastening assembly are formed in the vertical surface of the L-shaped plate body; a row of first round long holes for cooperating with the third tie rod fastening assembly are formed in the horizontal part of the L-shaped plate body.
[0010] As a preferred technical solution of the utility model, the inner corner fastener includes an L-shaped member; a threaded through hole for connecting and cooperating with the third tie rod fastening assembly is formed in one wall of the L-shaped member; a second round long hole for connecting and cooperating with the second tie rod fastening assembly is formed in the other wall of the L-shaped member.
[0011] As a preferred technical solution of the utility model, the first tie rod fastening assembly includes a full-thread tie rod passing through the outer fastener and the inner fastener; steel pipes are respectively arranged on the upper and lower sides of the opposite outer side surfaces of the outer fastener and the inner fastener; a lock nut and a formwork butterfly buckle are installed on the full-thread tie rod to press and position the two steel pipes.
[0012] As a preferred technical solution of the present utility model, the second tie rod fastening assembly includes a single-end threaded tie rod passing through the inner corner fastener, the cast-in-place concrete member and the outer fastener; a steel pipe is respectively arranged above and below the outer fastener on the outer side of the full-thread tie rod; a locking nut and a formwork butterfly buckle are installed on the single-end threaded tie rod to press and position the two steel pipes.
[0013] As a preferred technical solution of the present utility model, the third tie rod fastening assembly includes a single-head bolt; the single-head bolt passes through the inner fastener and the cast-in-place concrete member and is threadedly connected to the inner corner fastener.
[0014] The present utility model has the following beneficial effects:
[0015] 1. By the combined use of the outer fastener, the inner fastener and the inner corner fastener, and the mutual connection of the first, second and third tie rod fastening assemblies, the present utility model forms a stable fastening structure. This structure can effectively fix the outer formwork and the inner formwork, ensure the stability of the concrete part at the bottom of the newly built building, and provide a stable fastening ability for the formwork of the upward extended building.
[0016] 2. By respectively arranging the first rubber sheet between the outer surface of the outer fastener and the cast-in-place concrete member and the second rubber sheet between the bottom surface of the inner fastener and the top surface of the cast-in-place concrete member, the present utility model effectively inhibits the flow of cement mortar, prevents the phenomenon of mortar leakage, and ensures the sealing of the construction joint.
[0017] 3. By cutting off the tip of the outer corner of the inner corner fastener, the present utility model can be used without cleaning when encountering foreign objects at the inner corner, improving the installation efficiency.
[0018] 4. The round holes and long holes provided on each fastener of the present utility model facilitate the position adjustment during installation, and have strong adaptability; it can adapt to different construction environments and requirements, improving the applicability and flexibility of the entire fastening system.
[0019] 5. By adopting standardized components, the present utility model reduces the need for on-site processing and lowers the construction cost. At the same time, due to the improvement of its stability and sealing performance, the later maintenance and repair work can be reduced, thereby reducing the overall economic cost.
[0020] 6. By the reasonable fastening method and the setting of the rubber sheet, the present utility model improves the overall crack and displacement resistance of the structure, ensuring the construction quality.
[0021] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings
[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0023] Figure 1 It is a structural schematic diagram when the side formwork fastener of the vertical cast-in-place concrete member of the present utility model is implemented.
[0024] Figure 2 It is a structural schematic diagram of the outer fastener.
[0025] Figure 3 It is a structural schematic diagram of the inner fastener.
[0026] Figure 4 It is a structural schematic diagram of the inner corner fastener.
[0027] In the drawings, the list of components represented by each reference numeral is as follows:
[0028] 1 - outer formwork, 2 - inner formwork, 3 - outer fastener, 4 - inner fastener, 5 - inner corner fastener, 6 - first rubber sheet, 7 - second rubber sheet, 8 - fully threaded tie rod, 9 - steel pipe, 10 - lock nut, 11 - formwork butterfly buckle, 12 - single-end threaded tie rod, 13 - single-head bolt, 31 - rectangular plate body, 32 - stepped groove, 33 - first through-round hole, 34 - second through-round hole, 41 - L-shaped plate body, 42 - third through-round hole, 43 - first circular long hole, 51 - L-shaped member, 52 - threaded through-hole, 53 - second circular long hole. Specific embodiments
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Specific embodiment one:
[0031] Please refer to Figure 1As shown in the figure, the utility model relates to a side formwork fastener for vertical cast-in-place concrete components, including an inner corner fastener 5, an outer fastener 3 and an inner fastener 4 which are respectively used for clamping an outer formwork 1 and an inner formwork 2 on the outside. The outer fastener 3, the inner fastener 4 and the inner corner fastener 5 are respectively located at the outer surface, the top surface and the internal angle of the cast-in-place concrete component. The outer fastener 3 and the inner fastener 4 are connected and fastened by a first tie rod fastening assembly. The outer fastener 3 and the inner corner fastener 5 are connected and fastened by a second tie rod fastening assembly. The inner fastener 4 and the inner corner fastener 5 are connected and fastened by a third tie rod fastening assembly.
[0032] As Figure 1 shown, when the outer fastener 3, the inner fastener 4 and the inner corner fastener 5 clamp and fix the outer formwork 1 and the inner formwork 2 on the outside, the outer fastener 3, the inner fastener 4 and the inner corner fastener 5 form a stable fastening structure with the cast-in-place concrete component through the first tie rod fastening assembly, the second tie rod fastening assembly and the third tie rod fastening assembly, realizing the stable fastening of the outer formwork 1 and the inner formwork 2 of the lowest concrete part of the newly built building. The overall crack resistance and displacement resistance are good, providing stable fastening ability for the formwork of the upward extended building.
[0033] Among them, as Figures 1-4 shown, the first tie rod fastening assembly includes a full-thread tie rod 8 passing through the outer fastener 3 and the inner fastener 4. Steel pipes 9 are respectively arranged on the opposite outer sides of the outer fastener 3 and the inner fastener 4 above and below the full-thread tie rod 8. A lock nut 10 and a formwork butterfly buckle 11 are installed on the full-thread tie rod 8 to press and position the two steel pipes 9. The second tie rod fastening assembly includes a single-end threaded tie rod 12 passing through the inner corner fastener 5, the cast-in-place concrete component and the outer fastener 3. Steel pipes 9 are respectively arranged on the outer side of the outer fastener 3 above and below the full-thread tie rod 8. A lock nut 10 and a formwork butterfly buckle 11 are installed on the single-end threaded tie rod 12 to press and position the two steel pipes 9. The third tie rod fastening assembly includes a single-head bolt 13. The single-head bolt 13 passes through the inner fastener 4 and the cast-in-place concrete component and is threadedly connected to the inner corner fastener 5. The first tie rod fastening assembly, the second tie rod fastening assembly and the third tie rod fastening assembly are all common clamping tools for building formwork reinforcement and will not be elaborated.
[0034] Among them, as Figures 1-2As shown, a first rubber sheet 6 is provided between the outer fastener 3 and the outer surface of the cast-in-place concrete member. The outer fastener 3 includes a rectangular plate body 31. When installed, the first rubber sheet 6 is placed in the lower half of the inner side surface of the rectangular plate body 31. A step groove 32 for installing the outer formwork 1 is provided in the upper half of the inner side surface of the rectangular plate body 31. The sum of the depth of the step groove 32 and the thickness of the first rubber sheet 6 is the same as the thickness of the outer formwork 1. The first rubber sheet 6 and the lower half of the rectangular plate body 31 are jointly provided with a row of first through-round holes 33 connected and matched with the second tie rod fastening assembly. A row of second through-round holes 34 matched with the first tie rod fastening assembly is provided in the upper half of the rectangular plate body 31. The first rubber sheet 6 between the outer fastener 3 and the outer surface of the cast-in-place concrete member effectively inhibits the downward flow of cement mortar from the gap, so as to prevent leakage of mortar and ensure the sealing of the construction joint.
[0035] As shown in Figure 1 and 3 shown, a second rubber sheet 7 is provided between the bottom surface of the inner fastener 4 and the top surface of the cast-in-place concrete member. The inner fastener 4 includes an L-shaped plate body 41. A row of third through-round holes 42 matched with the first tie rod fastening assembly is provided on the vertical surface of the L-shaped plate body 41. A row of first oblong holes 43 matched with the third tie rod fastening assembly is provided on the horizontal part of the L-shaped plate body 41. The second rubber sheet 7 between the bottom surface of the inner fastener 4 and the top surface of the cast-in-place concrete member effectively prevents the horizontal outward overflow of cement mortar from the bottom of the inner fastener 4, so as to prevent leakage of mortar and ensure the sealing of the construction joint. The first oblong holes 43 provided on the inner fastener 4 facilitate the movement of the single-headed bolt 13 to accurately connect and fix with the thread of the lower inner corner fastener 5 below.
[0036] As shown in Figure 1 and 4 shown, the inner corner fastener 5 includes an L-shaped member 51. A threaded through-hole 52 connected and matched with the third tie rod fastening assembly is provided on one wall of the L-shaped member 51. A second oblong hole 53 connected and matched with the second tie rod fastening assembly is provided on the other wall of the L-shaped member 51. The outer corner tip of the inner corner fastener 5 is cut off, so that it can be used without cleaning when there are foreign objects in the inner corner of the cast-in-place concrete member, improving the installation convenience of the inner corner fastener 5. The second oblong holes 53 and the threaded through-hole 52 provided on the two walls of the inner corner fastener 5 facilitate the position adjustment during installation and are convenient for adapting to the installation connection with the outer fastener 3 and the inner fastener 4.
[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0038] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A side formwork fastener for a vertical cast-in-place concrete member, characterized in that: It comprises an inner corner fastener (5) and an outer fastener (3) and an inner fastener (4) respectively used for clamping the outer template (1) and the inner template (2) on the outside; The external fasteners (3), internal fasteners (4) and internal corner fasteners (5) are respectively located on the exterior surface, top surface and internal corner of the cast-in-place concrete component; The outer fastener (3) and the inner fastener (4) are connected and fastened via a first pull rod fastening assembly; The outer fastener (3) and the inner corner fastener (5) are connected and fastened via a second pull rod fastening assembly; The inner fastener (4) and the inner corner fastener (5) are connected and fastened via a third pull rod fastening assembly.
2. The side formwork fastener for a vertical cast-in-place concrete member according to claim 1, characterized in that: A first rubber sheet (6) is arranged between the external fastener (3) and the outer facade of the cast-in-place concrete component; the external fastener (3) comprises a rectangular plate body (31); the first rubber sheet (6) is placed on the lower half of the inner side surface of the rectangular plate body (31) when installed; a step groove (32) for installing the outer formwork (1) is provided on the upper half of the inner side surface of the rectangular plate body (31); the sum of the depth of the step groove (32) and the thickness of the first rubber sheet (6) is the same as the thickness of the outer formwork (1); the first rubber sheet (6) and the lower half of the rectangular plate body (31) are jointly provided with a row of first through circular holes (33) connected and matched with the second tie rod fastening assembly; the upper half of the rectangular plate body (31) is provided with a row of second through circular holes (34) matched with the first tie rod fastening assembly.
3. The side formwork fastener for a vertical cast-in-place concrete member according to claim 1, characterized in that: A second rubber sheet (7) is arranged between the bottom surface of the inner fastener (4) and the top surface of the cast-in-place concrete component; the inner fastener (4) comprises an L-shaped plate body (41); a vertical surface of the L-shaped plate body (41) is provided with a row of third through circular holes (42) cooperating with the first tie rod fastening assembly; and a horizontal portion of the L-shaped plate body (41) is provided with a row of first long circular holes (43) cooperating with the third tie rod fastening assembly.
4. The side formwork fastener for a vertical cast-in-place concrete member according to claim 1, characterized in that: The inner corner fastener (5) comprises an L-shaped component (51); one wall of the L-shaped component (51) is provided with a threaded through hole (52) for connecting and cooperating with the third pull rod fastening assembly; the other wall of the L-shaped component (51) is provided with a second oblong hole (53) for connecting and cooperating with the second pull rod fastening assembly.
5. The side formwork fastener for a vertical cast-in-place concrete member according to claim 1, characterized in that: The first tie rod fastening assembly comprises a fully threaded tie rod (8) passing through the outer fastener (3) and the inner fastener (4); a steel pipe (9) is respectively arranged above and below the fully threaded tie rod (8) on the opposite outer side surfaces of the outer fastener (3) and the inner fastener (4); a locking nut (10) and a template butterfly buckle (11) are installed on the fully threaded tie rod (8) to press and position the two steel pipes (9).
6. The side formwork fastener for a vertical cast-in-place concrete member according to claim 5, characterized in that: The second tie rod fastening assembly comprises a single-ended threaded tie rod (12) penetrating the inner corner fastener (5), the cast-in-place concrete component and the outer fastener (3); a steel pipe (9) is respectively arranged above and below the full-threaded tie rod (8) on the outer side surface of the outer fastener (3); and a locking nut (10) and a template butterfly buckle (11) are installed on the single-ended threaded tie rod (12) to press and position the two steel pipes (9).
7. The side formwork fastener for a vertical cast-in-place concrete member according to claim 1, characterized in that: The third tie rod fastening assembly comprises a single-head bolt (13); the single-head bolt (13) passes through the inner fastener (4) and the cast-in-place concrete component and is threadedly connected to the inner corner fastener (5).