A modular reinforcing structure for concrete forms

Abstract

The utility model relates to the field of building construction reinforcing technology, especially disclose a combined reinforcing structure of concrete form, including square column buckle, multiple groups of back lath square and angle iron, square column buckle includes the closed frame formed by multiple groups of clamp connection in turn, back lath square is arranged on the outside of column form along the height direction of outside concrete column body, and the angle iron is arranged at the corner of column form, and the angle iron is clamped between the corner of column form and the inside corner of back lath square, square column buckle is tightly buckled on the outside of back lath square, thereby forming the three -level collaborative reinforcing system that the corner is reinforced by angle iron, back lath square uniform force transmission, square column buckle provides closed loop constraint. The utility model directly wraps the corner of column form through the angle iron, and back lath square covers the surface of column form, converts point load into linear load, and square column buckle forms rigid frame and provides final constraint reaction, solves the problem that the corner is weak, force transmission is uneven and the overall performance is poor in traditional reinforcing, effectively prevents the problems such as swelling mould, slurry leakage and corner defect.

Description

Technical Field

[0001] This utility model relates to the field of building construction reinforcement technology, and in particular discloses a combined reinforcement structure for concrete formwork. Background Technology

[0002] In the construction industry, the forming quality of concrete columns directly depends on the stability and precision of the formwork reinforcement system. Traditional column formwork reinforcement methods mainly rely on combinations of steel pipe couplers or timber with tie bolts. These traditional methods have many inherent defects in practical applications:

[0003] First, the installation process is cumbersome and inefficient. Construction workers need to adjust the spacing of each steel pipe and tighten numerous fasteners, requiring a high level of skill and resulting in excessively long reinforcement times for a single column. Second, the reinforcement effect is unstable and prone to quality problems. Due to issues such as slippage or loosening of the fasteners and deformation of the timber after exposure to moisture, the formwork often shifts or bulges during concrete pouring, leading to large dimensional deviations and poor surface flatness in the finished column, severely impacting structural quality and appearance. Particularly problematic is the weak reinforcement of the four corners of the column in traditional methods. Corners are stress concentration areas; under the lateral pressure of concrete, the formwork at these corners is prone to bulging and grout leakage, resulting in common quality defects such as chipped edges, grout leakage, and other defects. This leads to poor appearance and requires significant manual labor for subsequent repairs.

[0004] Therefore, there is an urgent need in this field for a column formwork reinforcement structure that is quick to install, provides stable reinforcement, effectively prevents grout leakage at the edges and corners, and has a long service life. Utility Model Content

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a column formwork reinforcement structure that is quick to install, stable in reinforcement, can effectively prevent grout leakage at the corners, and has a long turnover life.

[0006] To achieve the above objectives, this utility model provides a combined reinforcement structure for concrete formwork, characterized by comprising square column buckles, multiple sets of back-rib square tubes, and angle irons. The square column buckles consist of a closed frame formed by multiple sets of clamps connected sequentially. The back-rib square tubes are arranged along the height direction of the external concrete column on the outside of the column formwork. The angle irons are placed at the corners of the column formwork, sandwiched between the corners of the column formwork and the inner corners of the back-rib square tubes. The square column buckles are tightly fastened to the outside of the back-rib square tubes, thus forming a three-level collaborative reinforcement system: angle irons reinforcing the corners, back-rib square tubes uniformly transmitting force, and square column buckles providing closed-loop constraints. This utility model directly wraps the corners of the column formwork with angle irons, and the back-rib square tubes cover the surface of the column formwork, converting point loads into line loads. The square column buckles form a rigid frame, providing the final constraint reaction force, solving the problems of weak corners, uneven force transmission, and poor overall integrity in traditional reinforcement methods, effectively preventing problems such as formwork bulging, grout leakage, and missing corners.

[0007] Furthermore, the clamp includes a U-shaped segment and a connecting segment. The connecting segment has a positioning hole and a positioning pin for insertion into the positioning hole. The connecting segment extends into the U-shaped segment of the adjacent clamp, and the positioning pin is inserted into the positioning hole to stop and restrict the outward displacement of the U-shaped segment. This "connecting segment inserted into the U-shaped segment" insertion method, rather than the traditional overlapping joint, utilizes the positioning pin passing through the hole at the insertion point and its end pressing against the inner wall of the U-shaped segment to achieve mechanical stop. The insertion method is intuitive and quick, more efficient than aligning multiple bolt holes. The positioning pin mainly bears shear force, and its stopping effect directly converts the tensile force into pressure on the U-shaped segment wall. The force flow path is short and clear, resulting in high connection rigidity.

[0008] Furthermore, the square column buckle is provided in multiple sets, with these sets evenly spaced along the height direction of the external concrete column. This allows for segmented bearing of the lateral pressure on the concrete, ensuring forming accuracy throughout the entire height range of the column.

[0009] Furthermore, the spacing between two adjacent sets of square post buckles is 300-400mm.

[0010] Furthermore, the spacing between two adjacent sets of back rib square tubes on the same side of the column template is 200-300mm.

[0011] Furthermore, the outer wall of the back rib square tube is provided with a positioning groove along its length, and the square column buckle is provided with a protrusion that matches the positioning groove. On the contact surface between the back rib square tube and the square column buckle, a "groove-protrusion" interlocking structure is provided to prevent relative slippage between the square column buckle and the back rib under dynamic loads such as concrete vibration, ensuring that the reinforcement system is always in the designed position.

[0012] Furthermore, an elastic sealing strip is provided on the inner surface of the angle iron. This active sealing fundamentally solves the most stubborn problem of grout leakage at the column corners. The elastic sealing strip can compensate for minor unevenness on the template surface, resulting in a better sealing effect.

[0013] Furthermore, the clamp has an I-shaped cross-section. This cross-sectional shape has an extremely high section modulus of bending resistance, achieving maximum bending stiffness with minimal material, ensuring minimal deformation of the square column clamp under enormous lateral pressure.

[0014] Furthermore, the positioning pin has a wedge-shaped structure, with a lug at the large end for hammering. The wedge-shaped structure achieves self-locking, becoming tighter with each hammering; the lug facilitates construction operations.

[0015] Furthermore, an anti-slip rubber pad is provided between the inner wall of the U-shaped segment and the contact surface of the connecting segment to increase friction. The anti-slip pad further suppresses micro-movements, prevents loosening, and buffers vibrations by increasing friction.

[0016] The beneficial effects of this utility model are: the synergistic effect of the corner guard iron and the elastic sealing strip realizes the integration of rigid reinforcement and flexible sealing in the column corner area, fundamentally solving the common quality problems such as corner leakage, formwork bulging, and missing edges and corners that have long plagued construction.

[0017] The high rigidity of the back rib square tube combined with the closed-loop constraint of the square column buckle ensures that the formwork system deforms very little under the huge lateral pressure of concrete, so that the cross-sectional dimensions of the formed column are accurate and the four corners are square. The deviation of verticality and flatness can be easily controlled within millimeters, which meets the appearance requirements of high-grade fair-faced concrete.

[0018] Replacing wood with steel, the core components (back rib square tubes, corner guards, and square column buckles) are all made of high-strength steel, offering excellent durability and allowing for reuse more than 80 times, far exceeding traditional timber (≤5 times). This not only reduces the amortization cost of materials per project by more than 80%, but also aligns with the environmentally friendly concept of green construction. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a combined reinforcement structure for concrete formwork according to the present invention;

[0020] Figure 2 This is a structural schematic diagram from another perspective of a combined reinforcement structure for concrete formwork according to this utility model;

[0021] Figure 3 for Figure 2 A partial schematic diagram of A in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the back-ribbed square tube of this utility model.

[0023] The reference numerals in the figures include:

[0024] 1. Square column buckle; 2. Back rib square tube; 3. Angle iron; 4. Clamp; 5. U-shaped section; 6. Connecting section; 7. Positioning hole; 8. Positioning pin; 9. Positioning groove; 10. Elastic sealing strip. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figures 1 to 4 As shown, this utility model discloses a combined reinforcement structure for concrete formwork, characterized by comprising a square column buckle 1, multiple sets of back-rib square tubes 2, and angle irons 3. The square column buckle 1 includes a closed frame formed by multiple sets of clamps 4 connected sequentially. The back-rib square tubes 2 are arranged along the height direction of the external concrete column on the outside of the column formwork. The angle irons 3 are set at the corners of the column formwork, sandwiched between the corners of the column formwork and the inner corners of the back-rib square tubes 2. The square column buckle 1 is tightened on the outside of the back-rib square tubes 2, thus forming a three-level collaborative reinforcement system in which the angle irons 3 reinforce the corners, the back-rib square tubes 2 uniformly transmit force, and the square column buckle 1 provides closed-loop constraint. This utility model directly wraps the corners of the column formwork with angle irons 3, and the back-rib square tubes 2 cover the surface of the column formwork, converting point loads into line loads. The square column buckle 1 forms a rigid frame, providing the final constraint reaction force, solving the problems of weak corners, uneven force transmission, and poor overall integrity in traditional reinforcement, and effectively preventing problems such as formwork bulging, grout leakage, and missing corners.

[0027] In practice, the prefabricated column template (which can be a two- or four-piece structure) is placed around the column position and initially fixed with temporary clamps or bolts. Four angle irons 3 are taken and placed at the four corners of the template respectively. The inner side of the angle irons 3 is attached to the outer corner of the template so that the inner corner of the angle irons 3 is tightly attached to the outer corner of the template. The two outer sides of the angle irons 3 are attached to the inner angle of the back rib square tube 2 respectively. Along the height direction of the concrete column, several sets of back rib square tubes 2 are evenly arranged on the outside of each template. The four sets of clamps 4 are connected in sequence to form a closed frame. The square column buckle 1 is put on the outside of the arranged back rib square tube 2 and the square column buckle 1 is gradually tightened to form a circumferential constraint on the back rib square tube 2.

[0028] The clamp 4 includes a U-shaped segment 5 and a connecting segment 6. The connecting segment 6 is provided with a positioning hole 7 and a positioning pin 8 inserted into the positioning hole 7. The connecting segment 6 extends into the U-shaped segment 5 of the adjacent clamp 4, and the positioning pin 8 is inserted into the positioning hole 7 to stop and restrict the outward displacement of the U-shaped segment 5. The "connecting segment 6 is inserted into the U-shaped segment 5" insertion method is adopted instead of the traditional overlapping joint. The positioning pin 8 passes through the hole of the insertion part, and its end is pressed against the inner wall of the U-shaped segment 5 to achieve mechanical stop. The insertion method is intuitive and fast, and more efficient than aligning multiple bolt holes. The positioning pin 8 mainly bears the shear force, and its stopping effect directly converts the tensile force into the pressure of the wall of the U-shaped segment 5. The force flow path is short and clear, and the connection rigidity is high.

[0029] The square column buckle 1 is provided in multiple sets, with the multiple sets of square column buckles 1 evenly spaced along the height direction of the external concrete column. This achieves segmented bearing of the lateral pressure on the concrete, ensuring the forming accuracy throughout the entire height range of the column.

[0030] The distance between two adjacent sets of square post buckles 1 is 300-400mm.

[0031] Preferably, in this embodiment, the spacing between two adjacent sets of square column buckles 1 is 400mm. This spacing is the optimal value obtained through mechanical calculations and verification by a large number of engineering practices, which can achieve the most economical use of materials while ensuring the rigidity of the template system and the molding quality.

[0032] The spacing between two adjacent sets of back rib square tubes 2 on the same side of the column template is 200-300mm.

[0033] Preferably, the spacing between two adjacent sets of back rib square tubes 2 on the same side of the column template is 200mm. This spacing is the optimal solution to achieve uniform stress on the template panel and avoid the phenomenon of "band-shaped bulging".

[0034] The outer wall of the back rib square tube 2 is provided with a positioning groove 9 along its length, and the square column buckle 1 is provided with a protrusion that matches the positioning groove 9. On the contact surface between the back rib square tube 2 and the square column buckle 1, an interlocking structure of "groove-protrusion" is provided to prevent relative slippage between the square column buckle 1 and the back rib under dynamic loads such as concrete vibration, and to ensure that the reinforcement system is always in the designed position.

[0035] Preferably, the back rib square tube 2 is a hollow steel square tube with a cross section of 40mm×40mm×2mm and a length of 4m. Multiple back rib square tubes 2 are arranged at equal intervals along the height direction on each side of the column formwork. During installation, the back rib square tubes 2 are tightly pressed on both outer sides of the angle iron 3 to form a tight fit.

[0036] An elastic sealing strip 10 is provided on the inner side of the angle iron 3. The active sealing fundamentally solves the most stubborn problem of grout leakage at the column corner. The elastic sealing strip 10 can compensate for minor unevenness on the template surface, resulting in a better sealing effect.

[0037] Preferably, in this embodiment, an equilateral angle iron 3 with a length of 4m is used as the angle iron 3, and its size is preferably 50mm×50mm×2mm. An elastic sealing strip 10 of PEF foam material is glued to its inner side (i.e. the side that fits against the template). Then, the four angle irons 3 are precisely attached to the four corners of the column template, ensuring that the sealing strips on their inner sides are tightly pressed against the edges of the template without any gaps.

[0038] The clamp 4 has an I-shaped cross-section. This cross-sectional shape has an extremely high section modulus of bending resistance, achieving maximum bending stiffness with minimal material, and ensuring that the square column buckle 1 deforms minimally under enormous lateral pressure.

[0039] Preferably, clamp 4 is a reinforced I-beam with a width of 100mm and a thickness of 25mm.

[0040] The positioning pin 8 has a wedge-shaped structure, and the large end of the positioning pin 8 has a lug for hammering. The wedge-shaped structure achieves self-locking, becoming tighter with hammering; the lug facilitates construction operations.

[0041] An anti-slip rubber pad is provided between the inner wall of the U-shaped segment 5 and the contact surface of the connecting segment 6 to increase friction. The anti-slip pad further suppresses micro-movements, prevents loosening, and buffers vibrations by increasing friction.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A combined reinforcement structure for concrete formwork, characterized in that, The system includes a square column buckle (1), multiple sets of back rib square tubes (2) and angle iron (3). The square column buckle (1) includes a closed frame formed by multiple sets of clamps (4) connected in sequence. The back rib square tubes (2) are arranged on the outside of the column formwork along the height direction of the external concrete column. The angle iron (3) is set at the corner of the column formwork. The angle iron (3) is clamped between the corner of the column formwork and the inner corner of the back rib square tube (2). The square column buckle (1) is clamped on the outside of the back rib square tube (2), thus forming a three-level collaborative reinforcement system in which the angle iron (3) strengthens the corners, the back rib square tube (2) transmits force evenly, and the square column buckle (1) provides closed-loop constraint.

2. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: The clamp (4) includes a U-shaped section (5) and a connecting section (6). The connecting section (6) is provided with a positioning hole (7) and a positioning pin (8) inserted into the positioning hole (7). The connecting section (6) extends into the U-shaped section (5) of the adjacent clamp (4). The positioning pin (8) is inserted into the positioning hole (7) to stop and restrict the U-shaped section (5) from moving outward.

3. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: The square column buckle (1) is provided in multiple sets, and the multiple sets of square column buckles (1) are set at equal intervals along the height direction of the external concrete column.

4. The combined reinforcement structure for concrete formwork according to claim 3, characterized in that: The distance between two adjacent sets of square post buckles (1) is 300-400mm.

5. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: The spacing between two adjacent sets of back rib square tubes (2) on the same side of the column template is 200-300mm.

6. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: The outer wall of the back rib square tube (2) is provided with a positioning groove (9) arranged along its length direction, and the square column buckle (1) is provided with a protrusion that matches the positioning groove (9).

7. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: An elastic sealing strip (10) is provided on the inner side of the angle iron (3).

8. The combined reinforcement structure for concrete formwork according to claim 1, characterized in that: The cross-section of the clamp (4) is I-shaped.

9. A combined reinforcement structure for concrete formwork according to claim 2, characterized in that: The positioning pin (8) has a wedge-shaped structure, and the large end of the positioning pin (8) is provided with a lug for hammering.

10. A combined reinforcement structure for concrete formwork according to claim 2, characterized in that: An anti-slip rubber pad to increase friction is provided between the inner wall of the U-shaped section (5) and the contact surface of the connecting section (6).

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