SRC special-shaped column-RC slab node anti-shear device and construction method thereof

Abstract

The present invention discloses an SRC special-shaped column-RC slab joint anti-shear device and its construction method. The device adjusts the extension length of the expansion plate through a linkage structure, thereby adjusting the size of the shear plate. The linkage structure also adjusts the setting height of the lifting plate to adjust the installation height of the locking plate. During use, the device enables rapid splicing and installation, improving construction efficiency. The device is applicable to various types of steel columns and can be adjusted to accommodate different types of steel columns, thus offering wide applicability. The present invention addresses the issues with prior art anti-shear devices, such as the difficulty in rapid splicing and installation during construction and their low applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an SRC special-shaped column-RC plate node anti-punching device and a construction method thereof. Background Art

[0002] The reinforced concrete slab-column structure has the advantages of simple form, fast force transmission path, effective reduction of floor height, and simple formwork support. The special-shaped column structure avoids the problem of column corners protruding from the wall surface and increases the net area of ​​the room. Applying special-shaped columns to the slab-column structure can fully utilize the advantages of the slab-column structure and special-shaped columns, improve the appearance of the building, and make the room more comfortable. Arranging steel sections in the column section to form an SRC special-shaped column-RC slab structure (where SRC is a steel-reinforced concrete structure and RC is a reinforced concrete structure) can effectively increase the bearing capacity of the column and the lateral stiffness of the slab-column structure. The SRC special-shaped column-RC slab structure meets people's usage functions very well. However, the shear bearing capacity of this type of structural node is poor.

[0003] To promote the application of slab-column structures and improve the shear resistance of slab-column joints, existing technologies have developed a shear resistance device for SRC special-shaped column-RC slab structures. For example, Chinese Patent Publication No. CN214940957U discloses an SRC special-shaped column-RC slab joint shear resistance device. The device comprises a solid-web steel column and a shear resistance member. The shear resistance member comprises four L-shaped plates, each with its width oriented vertically. A shear plate is disposed between the two sides of each L-shaped plate, connecting the two sides. The four L-shaped plates are spliced ​​into a cross with a through-hole at the center of the cross. Adjacent sides of the L-shaped plates are fitted and fixed together. The solid-web steel column passes through the through-hole and is fixed to the L-shaped plate. This improves the bearing capacity and post-failure ductility of the slab-column joint.

[0004] During the construction process, the prior art anti-shear device is not convenient for rapid splicing and installation, has low construction efficiency, and is not convenient for adjustment according to different types of steel columns, resulting in low applicability. Summary of the Invention

[0005] In order to overcome the defects of the existing technology, an SRC special-shaped column-RC slab node anti-shear device and a construction method thereof are provided to solve the problems that the anti-shear device of the existing technology is not convenient for rapid splicing and installation during the construction process and has low applicability.

[0006] To achieve the above object, a SRC special-shaped column-RC slab node anti-punching device is provided, comprising:

[0007] A punching plate, wherein a vertical through hole is provided in the middle of the punching plate for the cross-rigid steel frame of the SRC special-shaped column to pass through, the punching plate has two opposite sides, and a first slide groove is formed on each side of the punching plate, an expansion plate is slidably provided in the first slide groove, and the expansion plates in the two first slide grooves are respectively provided with a first threaded hole, a first screw is rotatably installed in the punching plate, and the two ends of the first screw are respectively screwed into the first threaded holes of the two expansion plates, and two second slide grooves are provided on the upper part of the punching plate, and the two second slide grooves are arranged on opposite sides of the vertical through hole;

[0008] A vertically arranged support plate, the bottom of the support plate is slidably arranged in the second slide groove, the support plates in the two second slide grooves are respectively connected to the first and second sides opposite to the cross rigid steel frame, a vertically arranged third slide groove is formed on the upper part of the support plate, a lifting plate is slidably arranged in the third slide groove, a third threaded hole is formed at the bottom of the lifting plate, a third screw is rotatably installed in the third slide groove, and the upper end of the third screw is screwed into the third threaded hole;

[0009] A linkage structure for driving the first screw and the third screw in linkage, mounted on the punching plate;

[0010] Two locking plates, the locking plates being fixedly connected to the lifting plate, the two locking plates being fixedly connected to a first side and a second side of the cross stiffener that are opposite in a first horizontal direction, and fourth sliding grooves arranged in a horizontal direction are respectively formed on opposite sides of the locking plates;

[0011] The locking plate is rotatably mounted on the front of the platform, and the locking plate is configured to lock the locking plate and the locking plate, wherein the locking plate has a fourth screw hole, the fourth screw hole being arranged along the length direction of the fourth slot, the two ends of the fourth screw being respectively screwed into the fourth threaded holes of the two clamping plates, and the thread directions of the two ends of the fourth screw are opposite. After rotating the fourth screw, the two clamping plates move toward or away from each other.

[0012] Furthermore, the linkage structure includes:

[0013] A driven gear coaxially mounted on the first screw;

[0014] A rotating shaft is rotatably mounted on the punching plate, one end of the rotating shaft is coaxially connected to a driving gear, and the driving gear is meshed with the driven gear;

[0015] The sprocket is a second screw that is rotatably installed in the punching plate, the support plate is provided with a guide hole that passes through the third slide groove, the two ends of the second screw are rotatably passed through the guide holes of the two support plates, the two ends of the second screw are transmission-connected to the lower end of the third screw, the first screw and the second screw are coaxially installed with the sprocket, and the sprocket of the first screw is connected to the sprocket of the second screw through a transmission chain.

[0016] Furthermore, the second screw is arranged in the same direction as the first screw, the first screw is arranged along the depth direction of the first chute, and the second screw is arranged along the length direction of the second chute.

[0017] Furthermore, the lower end of the third screw is coaxially connected to a first bevel gear, and both ends of the second screw are coaxially mounted with second bevel gears, and the second bevel gear is meshed with the first bevel gear.

[0018] Furthermore, reinforcement flanges are formed on the first side, second side, third side and fourth side of the cross-rigid steel frame, the locking plate is bolted to the reinforcement flange on the first side or second side of the cross-rigid steel frame, and the clamping plate is bolted to the reinforcement flange on the third side or fourth side of the cross-rigid steel frame.

[0019] The present invention provides a construction method of an SRC special-shaped column-RC slab node anti-shear device, comprising the following steps:

[0020] The vertical through holes of the punching plate are placed outside the cross-rigid steel frame of the SRC special-shaped column;

[0021] Based on the outer diameter of the SRC special-shaped column, the first and third screws are driven by the linkage structure, so that the expansion plate extends out of the first chute of the punching plate and the lifting plate extends to the outside of the third chute of the support plate, thereby ensuring that the area of ​​the plate formed by the two expansion plates and the punching plate meets the design requirements, and the locking plate is set at the corresponding size of the cross-rigid steel frame;

[0022] Moving the locking plates so that the two locking plates are attached to the first side and the second side of the cross stiffener;

[0023] By rotating the fourth screw, the two clamping plates move toward each other to clamp the third side and the fourth side of the cross stiffener;

[0024] The two locking plates are fixedly connected to the first side and the second side of the cross rigid steel frame, and the two clamping plates are fixedly connected to the third side and the third side of the cross rigid steel frame.

[0025] The beneficial effects of the present invention lie in that the SRC special-shaped column-RC slab joint anti-shear device adjusts the extension length of the expansion plate through a linkage structure, thereby adjusting the size of the shear plate. The linkage structure also adjusts the setting height of the lifting plate to adjust the installation height of the locking plate. During use, it can achieve rapid splicing and installation, improving construction efficiency. It is also suitable for various types of steel columns and can be adjusted to suit different types of steel columns, showing wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 Schematic diagram of the structure of the SRC special-shaped column-RC slab node shear resistance device according to an embodiment of the present invention.

[0028] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the figure.

[0029] Figure 3 for Figure 1 A local enlarged schematic diagram of point B in FIG.

[0030] Figure 4 for Figure 1 A local enlarged schematic diagram of point C in FIG.

[0031] Figure 5 Schematic diagram of the structure of the punching plate according to an embodiment of the present invention.

[0032] Figure 6 Schematic diagram of the structure of the clamping plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] Reference Figures 1 to 6 As shown, the present invention provides an SRC special-shaped column-RC plate node anti-shear device, comprising: a shear plate 1, a support plate 2, a linkage structure, a locking plate 4 and a clamping plate 5.

[0036] For details, see Figure 5As shown, a vertical through hole a is opened in the middle of the punched plate 1. The vertical through hole a is for the cross-rigid steel frame 6 of the SRC special-shaped column to pass through.

[0037] The punched plate 1 is rectangular. It has two opposing sides in its width direction. A first chute b is formed on each side of the punched plate 1. The depth of the first chute is aligned with the width of the punched plate. An expansion plate 11 is slidably mounted in the first chute b. The expansion plate can slide along the depth of the first chute.

[0038] The expansion plates 11 in the two first chute grooves b each have a first threaded hole. The first threaded hole is arranged along the depth of the first chute. A first screw 12 is rotatably mounted in the punching plate 1. The ends of the first screw 12 are screwed into the first threaded holes of the two expansion plates 11. Two second chute grooves c are formed in the upper portion of the punching plate 1. The two second chute grooves c are arranged on opposite sides of the vertical through hole a.

[0039] Specifically, a lower channel is formed in the punching plate. The lower channel is connected to the two first chute slots. The middle portion of a first screw is rotatably disposed in the lower channel. The ends of the first screw extend into and screw into the first threaded holes of the expansion plate in the first chute slots. When the first screw is rotated, the two expansion plates move toward or away from each other.

[0040] The support plate 2 is arranged vertically. The bottom of the support plate 2 is slidably arranged in the second chute c. The second chute is arranged along the width direction of the punching plate.

[0041] The cross-rigid steel frame 6 comprises two cross-arranged steel plates. The two steel plates form a cross shape. The cross-rigid steel frame 6 has a first side and a second side, and a third side and a fourth side. The first side and the second side are arranged along a first horizontal direction. The third side and the fourth side are arranged along a second horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction.

[0042] The support plates 2 in the two second chute grooves c are connected to the first and second opposite sides of the cross-rigid steel frame 6, respectively. A vertically disposed third chute d is formed on the upper portion of the support plate 2. A lifting plate 21 is slidably mounted in the third chute d. The lifting plate is movable along the depth of the third chute. A third threaded hole is formed at the bottom of the lifting plate 21. A third screw 211 is rotatably mounted in the third chute d. The upper end of the third screw 211 is threadedly engaged with the third threaded hole.

[0043] The linkage structure is installed on the punching plate 1. The linkage structure is used to drive the first screw 12 and the third screw 211 in a linkage manner.

[0044] There are two locking plates 4. They are fixedly connected to the lifting plate 21 in a one-to-one correspondence. They are fixedly connected to first and second opposite sides of the cross stiffener 6 in a first horizontal direction. Fourth sliding grooves e are defined on opposite sides of the locking plates 4 along the horizontal direction.

[0045] Each locking plate is equipped with two clamping plates 5. One end of the clamping plate 5 is slidably arranged in the fourth slide groove e. The other end of the clamping plate 5 is connected to the third side and the fourth side of the cross stiffener 6 that are opposite in the second horizontal direction. A fourth screw 41 is rotatably installed in the locking plate 4. The clamping plate 5 is provided with a fourth threaded hole. The fourth threaded hole is arranged along the length direction of the fourth slide groove e. The two ends of the fourth screw 41 are respectively screwed into the fourth threaded holes of the two clamping plates 5. The thread directions of the two ends of the fourth screw 41 are opposite. The fourth slide groove is arranged along the second horizontal direction. The clamping plate can move along the second horizontal direction. After rotating the fourth screw 41, the two clamping plates 5 move toward or away from each other.

[0046] As a preferred embodiment, the linkage structure includes: a driven gear 31, a rotating shaft 32, and a sprocket.

[0047] participate Figure 2 and Figure 3 As shown, the driven gear 31 is coaxially mounted on the first screw 12. The rotating shaft 32 is rotatably mounted on the punching plate 1. One end of the rotating shaft 32 is coaxially connected to the driving gear, and the driving gear is engaged with the driven gear 31. The second screw 13 is rotatably mounted in the sprocket punching plate 1. The support plate 2 is provided with a guide hole that passes through the third slide groove d. The two ends of the second screw 13 are respectively rotatably inserted into the guide holes of the two support plates 2. The two ends of the second screw 13 are transmission-connected to the lower end of the third screw 211. The first screw 12 and the second screw 13 are respectively coaxially mounted with sprockets.

[0048] The sprocket of the first screw rod 12 is connected to the sprocket of the second screw rod 13 via a transmission chain 33 .

[0049] In this embodiment, see Figure 1 As shown, the second screw 13 is arranged in the same direction as the first screw 12. An upper channel is formed on the upper portion of the impact plate. The upper channel is connected to the two second chutes. The two second chutes are coaxially arranged. The middle portion of the second screw is rotatably disposed in the upper channel. The two ends of the second screw are respectively arranged along the length of the second chutes and extend to opposite ends of the second chutes. The first screw 12 is arranged along the depth direction of the first chutes b. The second screw 13 is arranged along the length direction or axial direction of the second chutes c.

[0050] See Figure 4As shown, the lower end of the third screw 211 is coaxially connected to the first bevel gear 212. The two ends of the second screw 13 are coaxially mounted with second bevel gears 131. The second bevel gear 131 is meshed with the first bevel gear 212.

[0051] The first, second, third, and fourth sides of the cross-rigid steel frame 6 are formed with reinforcement flanges 61. The locking plate 4 is bolted to the reinforcement flange 61 on the first or second side of the cross-rigid steel frame 6. The clamping plate 5 is bolted to the reinforcement flange 61 on the third or fourth side of the cross-rigid steel frame 6.

[0052] In this embodiment, the reinforcement flange, clamping plate, and locking plate each have mounting holes. During installation, the locking and clamping plates are adjusted in height via a linkage mechanism so that the mounting holes on the locking and clamping plates align with the mounting holes on the reinforcement flange. Bolts are then used to quickly lock the locking and clamping plates to the cross-stiffener.

[0053] The present invention provides a construction method of an SRC special-shaped column-RC slab node anti-shear device, comprising the following steps:

[0054] S1: The vertical through hole a of the punched plate 1 is sleeved onto the outside of the cross-rigid steel frame 6 of the SRC special-shaped column.

[0055] S2: Based on the outer diameter of the SRC special-shaped column, the first screw 12 and the third screw 211 are driven by the linkage structure, so that the expansion plate 11 extends out of the first slide groove b of the punching plate 1, and the lifting plate 21 extends to the outside of the third slide groove d of the support plate 2, so that the area of ​​the plate formed by the two expansion plates 11 and the punching plate 1 meets the design requirements, and the locking plate 4 is arranged on the opposite sides of the cross stiffener 6.

[0056] S3: Move the locking plates 4 so that the two locking plates 4 are attached to the first side and the second side of the cross stiffener 6 .

[0057] S4: By rotating the fourth screw 41 , the two clamping plates 5 move toward each other to clamp the third and fourth sides of the cross stiffener 6 .

[0058] S5: The two locking plates 4 are fixedly connected to the first side and the second side of the cross rigid steel frame 6 , and the two clamping plates 5 are fixedly connected to the third side and the third side of the cross rigid steel frame 6 .

[0059] The SRC special-shaped column-RC slab joint anti-shear device of the present invention uses a linkage structure to adjust the extension length of the expansion plate, thereby adjusting the size of the shear plate. The linkage structure also adjusts the setting height of the lifting plate to adjust the installation height of the locking plate. During use, it can achieve rapid splicing and installation, improving construction efficiency. It is suitable for various types of steel columns and can be adjusted to suit different types of steel columns, showing wide applicability.

[0060] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. A SRC special-shaped column-RC slab node anti-shear device, characterized in that: include: A punching plate, wherein a vertical through hole is provided in the middle of the punching plate for the cross-rigid steel frame of the SRC special-shaped column to pass through, the punching plate has two opposite sides, and a first slide groove is formed on each side of the punching plate, an expansion plate is slidably provided in the first slide groove, and the expansion plates in the two first slide grooves are respectively provided with a first threaded hole, a first screw is rotatably installed in the punching plate, and the two ends of the first screw are respectively screwed into the first threaded holes of the two expansion plates, and two second slide grooves are provided on the upper part of the punching plate, and the two second slide grooves are arranged on opposite sides of the vertical through hole; A vertically arranged support plate, the bottom of the support plate is slidably arranged in the second slide groove, the support plates in the two second slide grooves are respectively connected to the first and second sides opposite to the cross rigid steel frame, a vertically arranged third slide groove is formed on the upper part of the support plate, a lifting plate is slidably arranged in the third slide groove, a third threaded hole is formed at the bottom of the lifting plate, a third screw is rotatably installed in the third slide groove, and the upper end of the third screw is screwed into the third threaded hole; A linkage structure for driving the first screw and the third screw in linkage, mounted on the punching plate; Two locking plates, the locking plates being fixedly connected to the lifting plate, the two locking plates being fixedly connected to a first side and a second side of the cross stiffener that are opposite in a first horizontal direction, and fourth sliding grooves arranged in a horizontal direction are respectively formed on opposite sides of the locking plates; The locking plate is rotatably mounted on the front of the platform, and the locking plate is configured to lock the locking plate and the locking plate, wherein the locking plate has a fourth screw hole, the fourth screw hole being arranged along the length direction of the fourth slot, the two ends of the fourth screw being respectively screwed into the fourth threaded holes of the two clamping plates, and the thread directions of the two ends of the fourth screw are opposite. After rotating the fourth screw, the two clamping plates move toward or away from each other.

2. The SRC special-shaped column-RC slab node anti-punching device according to claim 1 is characterized in that: The linkage structure includes: A driven gear coaxially mounted on the first screw; A rotating shaft is rotatably mounted on the punching plate, one end of the rotating shaft is coaxially connected to a driving gear, and the driving gear is meshed with the driven gear; The sprocket is a second screw that is rotatably installed in the punching plate, the support plate is provided with a guide hole that passes through the third slide groove, the two ends of the second screw are rotatably passed through the guide holes of the two support plates, the two ends of the second screw are transmission-connected to the lower end of the third screw, the first screw and the second screw are coaxially installed with the sprocket, and the sprocket of the first screw is connected to the sprocket of the second screw through a transmission chain.

3. The SRC special-shaped column-RC slab node anti-punching device according to claim 2 is characterized in that: The second screw is arranged in the same direction as the first screw, the first screw is arranged along the depth direction of the first chute, and the second screw is arranged along the length direction of the second chute.

4. The SRC special-shaped column-RC slab node anti-punching device according to claim 2, characterized in that: The lower end of the third screw is coaxially connected to a first bevel gear, and both ends of the second screw are coaxially mounted with second bevel gears, and the second bevel gear is meshed with the first bevel gear.

5. The SRC special-shaped column-RC slab node anti-punching shear device according to claim 1, characterized in that: Reinforcement flanges are formed on the first side, second side, third side and fourth side of the cross-rigid steel frame, the locking plate is bolted to the reinforcement flange on the first side or the second side of the cross-rigid steel frame, and the clamping plate is bolted to the reinforcement flange on the third side or the fourth side of the cross-rigid steel frame.

6. A construction method for the SRC special-shaped column-RC slab node anti-punching shear device according to any one of claims 1 to 5, characterized in that: The following steps are involved: The vertical through holes of the punching plate are placed outside the cross-rigid steel frame of the SRC special-shaped column; Based on the outer diameter of the SRC special-shaped column, the first and third screws are driven by the linkage structure, so that the expansion plate extends out of the first chute of the punching plate and the lifting plate extends to the outside of the third chute of the support plate, thereby ensuring that the area of ​​the plate formed by the two expansion plates and the punching plate meets the design requirements, and the locking plate is set at the corresponding size of the cross-rigid steel frame; Moving the locking plates so that the two locking plates are attached to the first side and the second side of the cross stiffener; By rotating the fourth screw, the two clamping plates move toward each other to clamp the third side and the fourth side of the cross stiffener; The two locking plates are fixedly connected to the first side and the second side of the cross rigid steel frame, and the two clamping plates are fixedly connected to the third side and the third side of the cross rigid steel frame.

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