Connection device and manufacturing method for a continuously perforated steel folded plate

Abstract

The present invention discloses a connecting device and manufacturing method for a continuously perforated steel folded plate, which includes a base, at least two first folded plates, and two second folded plates. The first folded plates and the second folded plates are both fixed to the base, and all the first folded plates are located between the two second folded plates. Adjacent first folded plates and between the second folded plate and its adjacent first folded plate are connected by corresponding first steel bars; the first folded plate includes a first flat plate, a second flat plate, and a third flat plate. The first flat plate and the third flat plate are arranged parallel to each other, and both ends of the second flat plate are connected to the first flat plate and the third flat plate respectively, and the second flat plate is connected to the base. The spatial staggering degree of the connecting device is higher. After pouring concrete, the first folded plate is embedded in the concrete, and a compressed concrete block is formed between adjacent first folded plates. The acting area of the first folded plate in the longitudinal shear force direction is large, forming a compressed concrete block with a larger volume, and improving the longitudinal shear bearing capacity of the connecting device.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge structures, and particularly relates to a connecting device and manufacturing method for a continuously perforated steel folded plate. Background Art

[0002] In recent years, with the gradual promotion of the traditional construction industry towards the direction of green, efficient, and modern development, prefabricated buildings have been widely promoted, and among them, the development and application of steel-concrete composite structures with excellent mechanical properties have been rapid. The most critical issue in steel-concrete composite structures is the connection between steel beams and concrete slabs. Among the existing shear connectors for composite beams, the perforated plate connector is one of the main types. The perforated plate connector perforates at appropriate positions on the steel plate, and steel bars penetrate through the holes. The poured concrete enters the holes to form concrete tenons, thereby relying on the steel bars and concrete tenons to bear the acting force between the steel beam and the concrete slab. This kind of connector can well distribute the huge axial force and bending moment loads on the steel section to the concrete, enabling the stress of the steel structure to be well dispersed, better improving the performance of the joint part, and having great development space and potential.

[0003] The traditional perforated plate connector solely relies on ordinary concrete tenons to exert the force-bearing effect and does not fully utilize the shear potential of this kind of connector. Although the subsequent improved perforated corrugated plate connectors and other forms of perforated corrugated plate connectors developed based on this increase the anti-pulling and shear resistance performance through different forms of bending structures, the potential of this type of connector has not been fully exerted. Summary of the Invention

[0004] Aiming at the technical problems existing in the prior art, the purpose of the present invention is to provide a connecting device for a continuously perforated steel folded plate. This connecting device improves the overall mechanical performance of the structure and enhances the anti-pulling and shear bearing capacities.

[0005] Another purpose of the present invention is to provide a manufacturing method for a connecting device of a continuously perforated steel folded plate. This manufacturing method is convenient for on-site processing and flexible installation.

[0006] To achieve the above purposes, the present invention adopts the following technical solutions:

[0007] A connecting device for a continuously perforated steel folded plate, comprising a base, at least two first folded plates, and two second folded plates. The first folded plates and the second folded plates are both fixed to the base, and all the first folded plates are located between the two second folded plates. Adjacent first folded plates and between the second folded plate and its adjacent first folded plate are connected by corresponding first steel bars.

[0008] Preferably, the first folding plate includes a first flat plate, a second flat plate and a third flat plate. The first flat plate and the third flat plate are arranged parallel to each other. The two ends of the second flat plate are respectively connected to the first flat plate and the third flat plate, and the second flat plate is connected to the base.

[0009] Preferably, the cross-section of the first folding plate is Z-shaped.

[0010] Preferably, the angles formed between the first flat plate and the second flat plate and between the second flat plate and the third flat plate are 85 to 95°.

[0011] Preferably, the first flat plate and the third flat plate are both provided with holes. Adjacent first flat plates are connected by first steel bars, adjacent third flat plates are connected by first steel bars, the first second folding plate is connected to the third flat plate by a first steel bar, and the last second folding plate is connected to the first flat plate by a first steel bar.

[0012] Preferably, the cross-section of the second folding plate is L-shaped, and the two second folding plates are arranged in opposite directions.

[0013] Preferably, second steel bars are provided on the outer sides of the first folding plates.

[0014] Preferably, the connecting device further includes an I-shaped steel beam, and the lower end of the base is connected to the flange of the I-shaped steel beam.

[0015] Preferably, the connecting device further includes concrete blocks, and the concrete blocks are bonded to the first folding plates, the second folding plates, the base, the first steel bars and the second steel bars.

[0016] A manufacturing method of a connecting device for a continuous perforated steel folding plate as described above. Cut the steel plate and stamp it into a first folding plate, a second folding plate and a base integrally. Drill holes in the first folding plate and the second folding plate. Then weld the lower end of the base to the flange of the I-shaped steel beam. Adjacent holes are connected by first steel bars. Adjacent first folding plates and between the first folding plate and the second folding plate are all connected by first steel bars. The corresponding second steel bars are welded to the lower ends of the first folding plate and the second folding plate respectively. Pour concrete to complete the manufacture of the connecting device.

[0017] The present invention has the following advantages and beneficial effects compared with the prior art:

[0018] 1. For the connecting device of the continuous perforated steel folding plate of the present invention, the connection between the first folding plate and the second folding plate of this connecting device makes the spatial interleaving degree of the connecting device higher. After pouring concrete, the first folding plate is embedded in the concrete, and compressive concrete blocks can be formed between adjacent first folding plates. The acting area of the first folding plate in the longitudinal shear direction is larger, and compressive concrete blocks with a larger volume can be formed, greatly improving the longitudinal shear bearing capacity of the connecting device.

[0019] 2. The connecting device of the continuously perforated steel folded plate of the present invention. The first flat plate and the third flat plate of this connecting device are both provided with holes. The adjacent first flat plates are connected by the first steel bars, and the third flat plate and the second folded plate are both connected by the corresponding first steel bars, improving the structural stability between the first folded plate and the second folded plate, thereby improving the uplift and shear bearing capacities of the connecting device.

[0020] 3. The connecting device of the continuously perforated steel folded plate of the present invention. The second folded plate of this connecting device is L-shaped or Z-shaped. The first folded plate is connected to the second folded plate, and the second folded plate can be barbed and anchored in the concrete, improving the vertical uplift bearing capacity of the connecting device. The base is a straight steel plate, and the steel plate has a large frictional contact area with the concrete, improving the longitudinal shear bearing capacity of the connecting device.

[0021] 4. The connecting device of the continuously perforated steel folded plate of the present invention. The cross-sectional corner of the first folded plate of this connecting device can be adjusted, so as to adapt to the shear performance required by different structures.

[0022] 5. The manufacturing method of the connecting device of the continuously perforated steel folded plate of the present invention can be directly formed by cutting and bending a whole steel plate. The cutting line is simple, the processing is convenient, there is basically no waste material, and the utilization rate of the plate is high. Description of the Drawings

[0023] Figure 1 is a schematic diagram of a connecting device of a continuously perforated steel folded plate of the present invention Figure 1 .

[0024] Figure 2 is a schematic diagram of a connecting device of a continuously perforated steel folded plate of the present invention Figure 2 .

[0025] Figure 3 is a connection schematic diagram of the first folded plate, the second folded plate and the base of the present invention.

[0026] Among them, 1 is the first folded plate, 11 is the first flat plate, 12 is the second flat plate, 13 is the third flat plate, 2 is the second folded plate, 3 is the first steel bar, 4 is the base, 5 is the second steel bar, 6 is the I-shaped steel beam, 61 is the flange plate, and 7 is the concrete block. Detailed Description of the Invention

[0027] The following further describes in detail the invention purpose of the present invention in conjunction with the drawings and specific embodiments. The embodiments cannot be described in detail one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0028] Such as Figures 1 to 3As shown in the figure, a connecting device for a continuous perforated steel folded plate includes a base 4, at least two first folded plates 1, and two second folded plates 2. The first folded plates 1 and the second folded plates 2 are both fixed to the base 4, and all the first folded plates 1 are located between the two second folded plates 2. Adjacent first folded plates 1 and between the second folded plate 2 and its adjacent first folded plate 1 are connected by corresponding first steel bars 3. The use of the first folded plates 1 and the second folded plates 2 makes the spatial interleaving degree of the connecting device higher. After pouring concrete, the first folded plates 1 are embedded in the concrete, and compressive concrete blocks can be formed between adjacent first folded plates 1. The acting area of the first folded plates 1 in the longitudinal shear direction is larger, and larger-volume compressive concrete blocks can be formed, greatly improving the longitudinal shear bearing capacity of the connecting device. The first folded plates 1 are located between the two second folded plates 2, and the first steel bars 3 improve the structural stability between the first folded plates 1 and the second folded plates 2, thereby improving the uplift and shear bearing capacities of the connecting device.

[0029] The first folded plate 1 includes a first flat plate 11, a second flat plate 12, and a third flat plate 13. The first flat plate 11 and the third flat plate 13 are arranged parallel to each other. The two ends of the second flat plate 12 are respectively connected to the first flat plate 11 and the third flat plate 13, and the second flat plate 12 is connected to the base 4. The two ends of this second flat plate 12 are respectively connected to the middle parts of the first flat plate 11 and the third flat plate 13. The first flat plate 11, the second flat plate 12, and the third flat plate 13 are sequentially arranged with corners, which can increase the contact area between the first folded plate 1 and the concrete, thereby improving the anchoring effect between the first folded plate 1 and the concrete and increasing the shear resistance of the first folded plate 1.

[0030] The angles formed between the first flat plate 11 and the second flat plate 12 and between the second flat plate 12 and the third flat plate 13 are 85 - 95°. In this embodiment, the angles formed between the first flat plate 11 and the second flat plate 12 and between the second flat plate 12 and the third flat plate 13 are 90°. By adjusting the size of the corner angles of the sequential connection of the first flat plate 11, the second flat plate 12, and the third flat plate 13, the shear performance required by different structures can be adapted, and the shear resistance of the first folded plate 1 can be increased.

[0031] The first flat plate 11 and the third flat plate 13 are both provided with holes. Adjacent first flat plates 11 are connected by first steel bars 3, adjacent third flat plates 13 are connected by first steel bars 3, the first second folded plate 2 is connected to the third flat plate 13 by a first steel bar 3, and the last second folded plate 2 is connected to the first flat plate 11 by a first steel bar 3. Through the arrangement of the first steel bars 3, the structural stability between adjacent first flat plates 11 is increased, and at the same time, the structural integrity between the first folded plates 1 and the second folded plates 2 is also increased.

[0032] The cross-section of the second folding plate 2 is L-shaped, and the two second folding plates 2 are arranged in opposite directions. The second folding plate 2 can be barbed and anchored in the concrete to improve the vertical uplift bearing capacity of the connecting device. The second folding plates 2 are in opposite and relative positions to improve the shear resistance of the connecting device. The base 4 is a straight steel plate, and the straight steel plate has a large frictional contact area with the concrete, improving the longitudinal shear bearing capacity of the connecting device.

[0033] Second steel bars 5 are provided on the outer sides of the first folding plates 1. Here, the outer sides of the first folding plates 1 refer to the lower ends of the first flat plates 11 and the third flat plates 13. The lower ends of the first flat plates 11 and the third flat plates 13 are respectively connected to the second steel bars 5, and the second steel bars 5 can have an anchoring effect with the concrete, thereby increasing the uplift and shear resistance of the connecting device.

[0034] The connecting device further includes an I-beam 6, and the lower end of the base 4 is welded to the flange 61 of the I-beam 6. This forms a concrete tenon with a larger volume for the connecting device, enhancing the shear bearing capacity of the connecting device.

[0035] The connecting device further includes a concrete block 7, and the concrete block 7 is bonded to the first folding plate 1, the second folding plate 2, the base 4, the first steel bar 3, and the second steel bar 5. Using the concrete block 7 bonded to the first folding plate 1, the second folding plate 2, the base 4, the first steel bar 3, and the second steel bar 5 enables the connecting device to have lateral shear resistance and vertical uplift resistance.

[0036] A manufacturing method of a connecting device for a continuous perforated steel folding plate as described above. Cut the steel plate and stamp it into the first folding plate 1, the second folding plate 2, and the base 4 integrally. Punch holes in the first folding plate 1 and the second folding plate 2, then weld the lower end of the base 4 to the flange plate 61 of the I-beam 6. Connect every two adjacent holes through the first steel bar 3. Connect the adjacent first folding plates 1 and between the first folding plate 1 and the second folding plate 2 through the first steel bar 3. The corresponding second steel bars 5 are respectively welded to the lower ends of the first folding plate 1 and the second folding plate 2. Pour concrete to complete the manufacture of the connecting device.

[0037] The manufacturing method of this connecting device is simple. The first folding plate 1 and the second folding plate 2 are welded to the I-beam 7 through the base 4, which is convenient for flexible installation at the construction site, convenient for on-site processing, without prefabrication and customization, and at the same time speeds up the construction progress. The cutting lines of the first folding plate 1 and the second folding plate 2 are simple. The cut first folding plate 1 and second folding plate 2 can just be bent without cutting redundant steel plates, and the processing is convenient with basically no waste material and high utilization rate of the plates.

[0038] The above specific embodiments are the preferred embodiments of the present invention and cannot limit the present invention. Any other changes or other equivalent replacement methods made without departing from the technical solution of the present invention are included within the protection scope of the present invention.

Claims

1. A connecting device for a continuously perforated steel folded plate, characterized in that: It includes a base, at least two first folding plates and two second folding plates. The first folding plates and the second folding plates are both fixed to the base, and all the first folding plates are located between the two second folding plates. Adjacent first folding plates and between the second folding plate and its adjacent first folding plate are connected by corresponding first steel bars; The first folding plate includes a first flat plate, a second flat plate and a third flat plate. The first flat plate and the third flat plate are arranged parallel to each other. The two ends of the second flat plate are respectively connected to the first flat plate and the third flat plate, and the second flat plate is connected to the base; The cross-section of the first folding plate is Z-shaped; The angles formed between the first flat plate and the second flat plate and between the second flat plate and the third flat plate are 85-95°; Holes are provided in both the first flat plate and the third flat plate. Adjacent first flat plates are connected by first steel bars, adjacent third flat plates are connected by first steel bars, the first second folding plate is connected to the third flat plate by a first steel bar, and the last second folding plate is connected to the first flat plate by a first steel bar; The cross-section of the second folding plate is L-shaped, and the two second folding plates are arranged in opposite directions.

2. The connecting device of a continuously perforated steel folded plate according to claim 1, characterized in that: Second steel bars are provided on the outer sides of the first folding plates.

3. The connecting device of a continuously perforated steel folded plate according to claim 1, characterized in that: It also includes an I-beam, and the lower end of the base is connected to the flange of the I-beam.

4. The connecting device for a continuously perforated steel folded plate according to claim 1, wherein: It also includes concrete blocks, and the concrete blocks are bonded to the first folding plates, the second folding plates, the base, the first steel bars and the second steel bars.

5. A manufacturing method of a connecting device for a continuous perforated steel folded plate according to any one of claims 1 to 4, characterized in that: Cut the steel plate and stamp it into the first folding plates, the second folding plates and the base integrally. Drill holes in the first folding plates and the second folding plates, then weld the lower end of the base to the flange of the I-beam. Every two adjacent holes are connected by first steel bars. Adjacent first folding plates and between the first folding plates and the second folding plates are connected by first steel bars. The corresponding second steel bars are respectively welded to the lower ends of the first folding plates and the second folding plates. Pour concrete to complete the production of the connecting device.

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