Steel plate hoop for reinforcing a joint region of a beam-column of a stiff structure

Abstract

The application provides a kind of stiff structure beam column joint area ring strip steel plate type stirrup, belong to building construction technical field, including profiled steel column girder, transverse stirrup and longitudinal bar group, the side flange plate of profiled steel column girder is fixedly installed with multiple web support steel plate by bolt, further comprising connecting mechanism, it is arranged between every two adjacent groups of multiple web support steel plate, and it is distributed along the horizontal midline of multiple web support steel plate in vertical direction symmetry.The application makes multiple web support steel plate continuously receive the action stress towards the direction of profiled steel column girder, makes multiple web support steel plate keep close and stress effect with profiled steel column girder, transverse stirrup does not directly contact with profiled steel column girder, keeps close and fixed effect with profiled steel column girder through multiple web support steel plate, can play the restraint effect on profiled steel column girder through multiple web support steel plate, improves the one-way compression and shear strength of beam column joint mechanism.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a ring-shaped steel plate stirrup in the beam-column joint area of ​​a rigid structure. Background Technology

[0002] Reinforced concrete structures (also known as steel-concrete composite structures) consist of concrete, steel columns, beams, longitudinal reinforcement, and stirrups. Simply put, they involve adding steel sections to an existing reinforced concrete structure. The addition of steel sections effectively increases the load-bearing capacity of the components. Reinforced concrete structures are widely used in the construction of high-rise and super high-rise buildings.

[0003] Existing technology publication number CN113550431B discloses a ring-shaped steel plate stirrup in the beam-column joint area of ​​a stiffened structure and its construction method. It includes a vertically arranged steel column and horizontal beams arranged on the four sides of the steel column. Each beam has a horizontally threaded column on its web. A stirrup structure is provided between the threaded columns on adjacent beams. The stirrup structure includes an L-shaped connecting plate, threaded ends at both ends of the connecting plate, and threaded sleeves threaded to the threaded ends. Two threaded sleeves are simultaneously threaded to the threaded columns of the two beams. This application uses threaded sleeve connections instead of steel bar welding, making the welding process easier, improving construction convenience, and resulting in a more stable and robust threaded sleeve structure, thus improving construction quality.

[0004] However, existing technologies still have certain limitations. Using threaded sleeve connections, after the reinforcing bars are connected, impacts, vibrations, and variable loads can cause the sleeve to loosen, reducing preload, loosening the nuts, or even causing the sleeve to rotate, leading to loosening of the connecting components and affecting the structural strength and stability of the beam-column connection. Therefore, the urgent need to develop a rigid structural beam-column joint area with circumferential steel plate stirrups to improve these problems has become a pressing issue for those skilled in the art. Summary of the Invention

[0005] To overcome the above shortcomings, the present invention provides a ring-shaped steel plate stirrup in the beam-column joint area of ​​a rigid structure, which aims to improve the problem of unstable and easy loosening and rotation of existing threaded connections.

[0006] This invention is achieved through the following technical solution:

[0007] This invention provides a ring-shaped steel plate stirrup in the beam-column joint area of ​​a rigid structure, comprising a steel column main beam, transverse stirrups and longitudinal reinforcement groups, wherein the side flanges of the steel column main beam are fixedly installed with multi-web support steel plates by bolts, and further comprising:

[0008] The connecting mechanism is set between each pair of adjacent multi-web plate support steel plates and is symmetrically distributed in the vertical direction along the horizontal centerline of the multi-web plate support steel plates. By setting the load-bearing connecting blocks in the adjacent intervals of the multi-web plate support steel plates, a force is simultaneously applied between the fixed shafts set in connection with the multi-web plate support steel plates, so that the multi-web plate support steel plates are tightly attached to the outer wall of the flange of the main beam of the steel column.

[0009] The shaping mechanism is set between each pair of adjacent multi-web support steel plates. The longitudinal rib groups can be clamped by the limiting circular groove on the surface of the fixing triangular block that is fixedly connected to the multi-web support steel plate. The longitudinal rib groups are also clamped and fixed by the limiting connecting block that is bolted to the fixing triangular block.

[0010] Preferably, the multi-web plate supporting steel plate has multiple sets of cavities inside. Within each cavity of the multi-web plate supporting steel plate, multiple sets of horizontally evenly distributed transverse support plates are fixedly installed on one side close to the main beam of the steel column. Positioning grooves are provided inside the transverse support plates, and transverse stirrups are wound around these grooves to maintain a tight fit with the multiple sets of transverse support plates. The connecting mechanism includes a limiting and fixing plate, which is fitted to the contours of the flanges and webs at the edges of the multi-web plate supporting steel plate. The limiting and fixing plate is secured to the multi-web plate by multiple sets of bolts. The flange of the supporting steel plate, which is close to the main beam of the steel column, is connected in series with the flange of the main beam of the steel column. The flange of the multi-web supporting steel plate, which is away from the main beam of the steel column, is also fixedly connected to the limiting and fixing plate by multiple sets of bolts. A set of fixing ribs is fixedly installed at the center of the limiting and fixing plate along the horizontal direction. A fixing shaft is fixedly installed at the end of the fixing ribs on the side away from the multi-web supporting steel plate. The connection mechanism also includes a fastening threaded sleeve and a load-bearing connecting block. The fastening threaded sleeve and the load-bearing connecting block are set outside the fixing ribs and are connected to the fixing shaft by threaded connection.

[0011] Preferably, a first threaded connecting shaft is fixedly installed at the end of the fixed shaft away from the multi-web plate supporting steel plate, and a second threaded connecting shaft is fixedly installed at the end of the load-bearing connecting block close to the fixed rib. A fastening threaded sleeve is sleeved on the outer wall of the second threaded connecting shaft and the first threaded connecting shaft to connect the first threaded connecting shaft and the second threaded connecting shaft.

[0012] Preferably, the inner wall of the fastening threaded sleeve is provided with internal threads that are adapted to the first threaded connecting shaft and the second threaded connecting shaft respectively, and the rotation directions of the threads of the second threaded connecting shaft and the first threaded connecting shaft are opposite.

[0013] Preferably, a number of limit blocks arranged in a ring are movably sleeved along the axis of the fixed shaft on the side close to the fastening threaded sleeve. A compression spring is fixedly installed between the limit blocks and the inside of the fixed shaft. A number of limit grooves that are adapted to the outer contour of the limit blocks are opened on the side of the fastening threaded sleeve close to the fixed shaft.

[0014] Preferably, the edge of the limiting block extending to the outside of the fixed shaft is designed with a chamfer in the same direction.

[0015] Preferably, the shaping mechanism includes a fixed triangular block, which is fixedly installed on the outer wall of two adjacent fixed ribs. The surface of the fixed triangular block is provided with multiple sets of limiting circular grooves. A set of limiting connecting blocks is also provided on the outside of the fixed triangular block. The side wall of the limiting connecting block close to the fixed triangular block is provided with an arc-shaped groove that matches the limiting circular groove. A set of fastening bolts that pass through the limiting connecting block are threadedly connected to the side wall of the limiting connecting block. A set of threaded grooves that match the fastening bolts are provided at the center of the side wall of the fixed triangular block. The fixed triangular block and the fastening bolts are threadedly fixedly connected by the fastening bolts.

[0016] Preferably, the length of the threaded groove at the center of the fixed triangular block is greater than the length of the stud of the fastening bolt, and the threaded groove at the center of the fixed triangular block does not contact the limiting circular groove inside the fixed triangular block.

[0017] Preferably, the inner walls of the limiting circular groove and the arc-shaped groove of the limiting connecting block are provided with anti-slip texture.

[0018] Preferably, the shaping mechanism is designed symmetrically in two sets along the vertical direction and is symmetrically distributed along the horizontal centerline of the multi-web plate supporting steel plate.

[0019] The beneficial effects of this invention are:

[0020] Through the connecting mechanism, when the multi-web plate support steel plate is tightened, the multi-web plate support steel plate as a whole is continuously subjected to stress in the direction of the main beam of the steel column. This keeps the multi-web plate support steel plate in close contact with the main beam of the steel column and maintains a stress effect. The transverse stirrups do not directly contact the main beam of the steel column. By keeping the multi-web plate support steel plate in close contact with the main beam of the steel column and maintaining a fixed effect, the multi-web plate support steel plate can restrain the main beam of the steel column, improve the unidirectional compressive and shear strength of the beam-column joint mechanism, and improve the ductility of the structure. At the same time, the unidirectional tightening effect of the fastening threaded sleeve can be achieved through the limiting block and the limiting groove, which effectively ensures the stability of the tightening effect of the fastening threaded sleeve and prevents the fastening threaded sleeve from rotating and loosening.

[0021] By using multiple sets of transverse support plates, the contact area between the transverse stirrups and the beam-column structure can be effectively increased, making the stress distribution of the transverse stirrups more uniform, achieving continuous constraint on the beams, columns and concrete, improving the ductility of the structure, and significantly improving the confinement and protection effect of the transverse stirrups.

[0022] By fixing the longitudinal reinforcement group at at least two points, the verticality and stability of the longitudinal reinforcement group are effectively guaranteed, the positioning accuracy of the longitudinal reinforcement group is guaranteed, the displacement of the longitudinal reinforcement group is effectively avoided, the strength and stiffness requirements of the structure are guaranteed, the ductility of the beam and column section is improved, and the deformation during the later concrete pouring is reduced, which significantly improves the structural strength and ductility of the beam-column joint area. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an integral structure of a steel plate stirrup ring in the beam-column joint area of ​​a stiffened structural beam provided by an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the location of the transverse stirrups of the ring-shaped steel plate stirrups in the beam-column joint area of ​​a stiffened structure provided by an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the overall structure of a multi-web support steel plate with ring-shaped stirrups in the beam-column joint area of ​​a stiffened structural beam provided by an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the positional structure of the ring-shaped steel plate stirrup connection mechanism and the shaping mechanism in the beam-column joint area of ​​a stiffened structural structure provided by an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the overall structure of a ring-shaped steel plate stirrup connection mechanism for a stiffened beam-column joint area provided by an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the overall structure of a ring-shaped steel plate stirrup connection mechanism for a stiffened beam-column joint area provided by an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall structure of a ring-shaped steel plate stirrup shaping mechanism for a stiffened beam-column joint area provided by an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the overall stress plane of a steel plate stirrup in the joint area of ​​a stiffened structural beam-column joint provided by an embodiment of the present invention.

[0032] In the diagram: 1. Main beam of steel column; 2. Multi-web support steel plate; 3. Connecting mechanism; 4. Shaping mechanism; 5. Transverse stirrups; 6. Longitudinal reinforcement group; 21. Transverse support plate; 22. Positioning groove; 31. Limiting and fixing plate; 32. Fixing reinforcement; 33. Fixing shaft; 34. Fastening threaded sleeve; 35. Load-bearing connecting block; 41. Fixing triangular block; 42. Limiting connecting block; 43. Fastening bolt; 44. Limiting circular groove; 331. First threaded connecting shaft; 332. Limiting block; 333. Compression spring; 341. Limiting groove; 351. Second threaded connecting shaft. Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0034] Reference Figure 1-8 A type of reinforced structural beam-column joint with ring-shaped steel plate stirrups, comprising a steel column main beam 1, transverse stirrups 5, and longitudinal reinforcement groups 6, wherein the side flanges of the steel column main beam 1 are fixedly installed with multi-web support steel plates 2 by bolts, and further comprising:

[0035] The connecting mechanism 3 is set between each pair of adjacent multi-web plate support steel plates 2 and is symmetrically distributed along the horizontal centerline of the multi-web plate support steel plates 2 in the vertical direction. By setting the load-bearing connecting blocks 35 in the adjacent intervals of the multi-web plate support steel plates 2, the force is applied to the fixed shafts 33 connected to the multi-web plate support steel plates 2, so that the multi-web plate support steel plates 2 are tightly attached to the outer wall of the flange of the steel column main beam 1.

[0036] The shaping mechanism 4 is set between each pair of adjacent multi-web support steel plates 2. The longitudinal rib group 6 can be clamped by the limiting circular groove 44 on the surface of the fixing triangular block 41 which is fixedly connected to the multi-web support steel plate 2. The longitudinal rib group 6 is clamped and fixed by the limiting connecting block 42 which is bolted to the fixing triangular block 41.

[0037] Reference Figure 1-5The multi-web plate support steel plate 2 has multiple cavities inside. Within each cavity of the multi-web plate support steel plate 2, multiple sets of horizontally evenly distributed transverse support plates 21 are fixedly installed close to one side of the main beam 1 of the steel column. Positioning grooves 22 are provided inside the transverse support plates 21. Transverse stirrups 5 are arranged around the multiple sets of positioning grooves 22 and are kept in close contact with the multiple sets of transverse support plates 21. The connecting mechanism 3 includes a limiting and fixing plate 31. The limiting and fixing plate 31 is fitted to the contours of the wing plate and web at the edge of the multi-web plate support steel plate 2. The limiting and fixing plate 31 and the multi-web plate support steel plate are connected by multiple sets of bolts. 2. The flange on one side of the main beam 1 of the steel column is connected in series with the flange of the main beam 1 of the steel column. The flange on the side of the multi-web support steel plate 2 away from the main beam 1 of the steel column is also fixedly connected to the limiting and fixing plate 31 by multiple sets of bolts. A set of fixing ribs 32 is fixedly installed in the center of the limiting and fixing plate 31 along the horizontal direction. A fixing shaft 33 is fixedly installed at the end of the fixing ribs 32 away from the multi-web support steel plate 2. The connecting mechanism 3 also includes a fastening threaded sleeve 34 and a load-bearing connecting block 35. The fastening threaded sleeve 34 and the load-bearing connecting block 35 are set outside the fixing ribs 32 and are connected to the fixing shaft 33 by threaded connection.

[0038] It should be noted that the overall internal web and flange contours of the main steel column beam 1 are designed in a grid pattern. The internal structure of the multi-web support steel plate 2 has multiple cavities, forming a multi-web structure design. The cavities formed by the multiple webs can evenly separate the multiple sets of transverse stirrups 5. The even distribution of the transverse stirrups 5 can effectively improve the protection effect of the transverse stirrups 5 on the main steel column beam 1, enhance the overall shear strength of the shear section of the main steel column beam 1, and improve and maintain the uniform strength of the skeleton structure formed by the main steel column beam 1.

[0039] Meanwhile, when the transverse stirrups 5 are installed, they can slide into the positioning grooves 22 provided on the side wall of the transverse support plate 21. The positioning grooves 22 limit the transverse stirrups 5, preventing them from sliding and ensuring their positioning and stability. Furthermore, when the transverse stirrups 5 are installed, the tightened transverse stirrups 5 can contact multiple sets of transverse support plates 21. Compared with the traditional direct installation, the support of multiple sets of transverse support plates 21 can effectively increase the contact area between the transverse stirrups 5 and the beam-column structure, making the stress distribution of the transverse stirrups 5 more uniform. This achieves continuous constraint on the beams, columns, and concrete, improves the ductility of the structure, and significantly enhances the installation and protection effect of the transverse stirrups 5.

[0040] Reference Figure 5-6A first threaded connecting shaft 331 is fixedly installed at one end of the fixed shaft 33 away from the multi-web plate support steel plate 2. A second threaded connecting shaft 351 is fixedly installed at one end of the load-bearing connecting block 35 close to the fixed rib 32. A fastening threaded sleeve 34 is sleeved on the outer side wall of the second threaded connecting shaft 351 and the first threaded connecting shaft 331 to connect the first threaded connecting shaft 331 and the second threaded connecting shaft 351.

[0041] Furthermore, the inner wall of the fastening threaded sleeve 34 is provided with internal threads that are adapted to the first threaded connecting shaft 331 and the second threaded connecting shaft 351 respectively, and the rotation directions of the threads of the second threaded connecting shaft 351 and the first threaded connecting shaft 331 are opposite.

[0042] It should be noted that each set of load-bearing connecting blocks 35 is provided with a second threaded connecting shaft 351 on both sides, and the two ends of the fixing rib 32 are also symmetrically designed with fixing shafts 33 and first threaded connecting shafts 331. Through the opposite thread rotation directions of the second threaded connecting shafts 351 and the first threaded connecting shafts 331, and the inner wall of the fastening threaded sleeve 34 also having threads that respectively mate with the second threaded connecting shaft 351 and the first threaded connecting shaft 331, when the fastening threaded sleeve 34 is tightened with an external tool, the fastening threaded sleeve 34 rotates, and the second threaded connecting shaft 351 and the first threaded connecting shaft 331 are tightened towards each other through the threaded connection. (Refer to...) Figure 8 When each set of fastening threaded sleeves 34 rotates and tightens simultaneously, each set of load-bearing connecting blocks 35 is simultaneously subjected to two sets of stresses F1 directed toward the center of the adjacent two sets of multi-web plate support steel plates 2 through the tightening force. Furthermore, since the multi-web plate support steel plates 2 and the fixing ribs 32 are in the connecting and fixing part, the shear force F1 on each set of multi-web plate support steel plates 2 in the direction parallel to the flange of the main beam 1 of the steel column will be canceled out, and they will only be subjected to stress F2 perpendicular to the flange of the main beam 1 of the steel column. The stress F2 can achieve the tightening and fixing effect through the connecting mechanism 3, so that the multi-web plate support steel plate 2 is continuously subjected to stress in the direction of the main beam 1 of the steel column. This keeps the multi-web plate support steel plate 2 in close contact with the main beam 1 of the steel column and maintains the stress effect. The transverse stirrups 5 do not directly contact the main beam 1 of the steel column. Through the multi-web plate support steel plate 2 and the main beam 1 of the steel column, the multi-web plate support steel plate 2 can restrain the main beam 1 of the steel column, improve the uniaxial compressive and shear strength of the beam-column joint mechanism, and improve the ductility of the structure.

[0043] Reference Figure 6The fixed shaft 33 is close to the fastening threaded sleeve 34 on one side, and multiple sets of limit blocks 332 arranged in a ring are movably sleeved along the axis of the fixed shaft 33. A compression spring 333 is fixedly installed between the limit block 332 and the inside of the fixed shaft 33. The fastening threaded sleeve 34 is provided with multiple sets of limit grooves 341 that are adapted to the outer contour of the limit block 332 on one side close to the fixed shaft 33.

[0044] Furthermore, the limiting block 332 extends to the outer edge of the fixed shaft 33 with a chamfered design in the same direction;

[0045] It should be noted that when the limiting slide 341 is stationary, the limiting block 332 extends into the interior of the limiting slide 341 under the elastic force of the compression spring 333. When the fastening threaded sleeve 34 rotates, the chamfered design of the limiting block 332, along with the edge of the limiting slide 341, allows the limiting block 332 to move towards the fixed shaft as the limiting slide 341 rotates and tightens the second threaded connecting shaft 351 and the first threaded connecting shaft 331 towards each other. The internal push of 33, and the angle of the limiting block 332 is one-way opening. When the fastening threaded sleeve 34 rotates, the limiting block 332 and the limiting slide groove 341 can effectively limit and fix the fastening threaded sleeve 34, prevent the fastening threaded sleeve 34 from rotating, realize the one-way tightening effect of the fastening threaded sleeve 34, effectively ensure the stability of the tightening effect of the fastening threaded sleeve 34, and prevent the fastening threaded sleeve 34 from rotating and loosening.

[0046] Reference Figure 7 The shaping mechanism 4 includes a fixed triangular block 41, which is fixedly installed on the outer side wall of two adjacent fixed ribs 32. The surface of the fixed triangular block 41 is provided with multiple sets of limiting circular grooves 44. A set of limiting connecting blocks 42 is also provided on the outside of the fixed triangular block 41. The side wall of the limiting connecting block 42 close to the fixed triangular block 41 is provided with an arc-shaped groove that matches the limiting circular groove 44. A set of fastening bolts 43 that penetrate the limiting connecting block 42 are threadedly connected to the side wall of the limiting connecting block 42. A set of threaded grooves that match the fastening bolts 43 are provided at the center of the side wall of the fixed triangular block 41. The fixed triangular block 41 and the fastening bolts 43 are threadedly connected by the fastening bolts 43.

[0047] It should be noted that the inner diameter of the limiting circular groove 44 is slightly larger than the diameter of the longitudinal rib group 6, which facilitates the insertion of the longitudinal rib group 6 into the limiting circular groove 44, thereby achieving the positioning and limiting effect of the longitudinal rib group 6. Furthermore, the limiting connecting block 42 can be fixed to the fixed triangular block 41 by tightening the fastening bolt 43. At the same time, the longitudinal rib group 6 is clamped together by the arc groove of the limiting connecting block 42 and the limiting circular groove 44, thereby fixing the longitudinal rib group 6 and preventing it from loosening.

[0048] Furthermore, the length of the threaded groove at the center of the fixed triangular block 41 is greater than the length of the stud of the fastening bolt 43, and the threaded groove at the center of the fixed triangular block 41 does not contact the limiting circular groove 44 inside the fixed triangular block 41.

[0049] It should be noted that the inner walls of the arc-shaped grooves of the limiting circular groove 44 and the limiting connecting block 42 are provided with anti-slip textures.

[0050] Specifically, the anti-slip texture design effectively enhances the clamping and fixing effect of the limiting groove 44 and the limiting connecting block 42 on the longitudinal rib group 6, effectively achieving the limiting and fixing effect on the longitudinal rib group 6.

[0051] Furthermore, the shaping mechanism 4 is designed symmetrically in two sets along the vertical direction, and is symmetrically distributed along the horizontal centerline of the multi-web plate supporting steel plate 2;

[0052] It should be noted that, through symmetrical design, the longitudinal stiffener group 6 can be fixed at at least two points along the vertical direction using two sets of fixing mechanisms 4. This effectively ensures the verticality and stability of the longitudinal stiffener group 6, guarantees the accuracy of the positioning of the longitudinal stiffener group 6, effectively avoids the displacement of the longitudinal stiffener group 6, ensures the strength and stiffness requirements of the structure, thereby improving the ductility of the beam-column section and reducing deformation during subsequent concrete pouring, significantly improving the structural strength and ductility of the beam-column joint area.

[0053] The working principle of the ring-shaped steel plate stirrups in the beam-column joint area of ​​this type of stiffened structural beam:

[0054] First, the flanges and limiting fixing plates 31 of the multi-web support steel plate 2 are fixedly installed on the flanges of the main beam 1 of the steel column using bolts. Then, simultaneously tightening each set of threaded sleeves 34, the second threaded connecting shaft 351 and the first threaded connecting shaft 331 can be tightened towards each other through the threaded connection, referring to... Figure 8When each set of fastening threaded sleeves 34 rotates and tightens simultaneously, each set of load-bearing connecting blocks 35 is simultaneously subjected to two sets of stresses F1 directed toward the center of the adjacent two sets of multi-web plate support steel plates 2 through the tightening force. Furthermore, since the multi-web plate support steel plates 2 and the fixing ribs 32 are in the connecting and fixing part, the shear force F1 on each set of multi-web plate support steel plates 2 in the direction parallel to the flange of the main beam 1 of the steel column will be canceled out, and they will only be subjected to stress F2 perpendicular to the flange of the main beam 1 of the steel column. The stress F2 can achieve the tightening and fastening effect through the connecting mechanism 3, so that the multi-web plate support steel plate 2 is continuously subjected to stress in the direction of the main beam 1 of the steel column, so that the multi-web plate support steel plate 2 keeps in close contact with the main beam 1 of the steel column and the stress effect. The transverse stirrups 5 do not directly contact the main beam 1 of the steel column. Through the multi-web plate support steel plate 2 and the main beam 1 of the steel column, the multi-web plate support steel plate 2 can restrain the main beam 1 of the steel column, improve the uniaxial compressive and shear strength of the beam-column joint mechanism, and improve the ductility of the structure.

[0055] It should also be noted that, through the chamfered design of the limiting block 332 and the edge of the limiting groove 341, when the limiting groove 341 rotates and tightens the second threaded connecting shaft 351 and the first threaded connecting shaft 331 toward each other, the limiting block 332 is pushed toward the inside of the fixed shaft 33. At the same time, the chamfer of the limiting block 332 is one-way. When the fastening threaded sleeve 34 rotates, the limiting block 332 and the limiting groove 341 can effectively limit and fix the fastening threaded sleeve 34, prevent the fastening threaded sleeve 34 from rotating, and achieve a one-way tightening effect of the fastening threaded sleeve 34. This effectively ensures the stability of the tightening effect of the fastening threaded sleeve 34 and prevents the fastening threaded sleeve 34 from rotating and loosening.

[0056] Furthermore, the positioning groove 22 opened on the surface of the transverse support plate 21 is used to perform stirrup operation through the transverse stirrups 5. The multi-web support plate 2 has multiple sets of cavities inside, forming a multi-web structure design. The cavities formed by the multiple sets of webs can evenly separate the multiple sets of transverse stirrups 5. The even distribution of the transverse stirrups 5 can effectively improve the protection effect of the transverse stirrups 5 on the main beam of the steel column, improve the overall shear strength of the shear section of the main beam of the steel column 1, and make the strength of the skeleton structure formed by the main beam of the steel column 1 higher and more uniform.

[0057] Meanwhile, when the transverse stirrups 5 are installed, they can slide into the positioning grooves 22 provided on the side wall of the transverse support plate 21. The positioning grooves 22 limit the transverse stirrups 5 to prevent them from sliding, thus ensuring the positioning and stability of the transverse stirrups 5. Furthermore, when the transverse stirrups 5 are installed, the tightened transverse stirrups 5 can contact multiple sets of transverse support plates 21. Compared with the traditional direct installation, the support of multiple sets of transverse support plates 21 can effectively increase the contact area between the transverse stirrups 5 and the beam and column structure, making the stress distribution of the transverse stirrups 5 more uniform. This achieves continuous constraint on the beams, columns and concrete, improves the ductility of the structure, and significantly improves the installation and protection effect of the transverse stirrups 5.

[0058] Furthermore, the longitudinal stiffener group 6 is guided into the limiting circular groove 44. The limiting connecting block 42 and the fixing triangular block 41 can be fixed by tightening the fastening bolt 43. Simultaneously, the longitudinal stiffener group 6 is clamped together by the arc-shaped groove of the limiting connecting block 42 and the limiting circular groove 44, thus fixing the longitudinal stiffener group 6 and preventing it from loosening. At the same time, through a symmetrical design, the longitudinal stiffener group 6 can be fixed at at least two points along the vertical direction using two sets of fixing mechanisms 4, effectively ensuring the verticality and stability of the longitudinal stiffener group 6, guaranteeing the accuracy of its positioning, effectively preventing displacement of the longitudinal stiffener group 6, ensuring the strength and stiffness requirements of the structure, thereby improving the ductility of the beam-column section and reducing deformation during subsequent concrete pouring, significantly improving the structural strength and ductility of the beam-column joint area.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A type of steel plate stirrup in the beam-column joint area of ​​a rigid structure, comprising a steel column main beam (1), transverse stirrups (5), and longitudinal reinforcement groups (6), wherein the side flanges of the steel column main beam (1) are fixedly installed with multi-web support steel plates (2) by bolts, characterized in that, Also includes: The connecting mechanism (3) is set between each pair of adjacent multi-web plate support steel plates (2) and is symmetrically distributed along the horizontal centerline of the multi-web plate support steel plates (2) in the vertical direction. The load-bearing connecting block (35) set in the adjacent interval of the multi-web plate support steel plates (2) simultaneously applies force to the fixed shaft (33) set in connection with the multi-web plate support steel plates (2), so that the multi-web plate support steel plates (2) are tightly attached to the outer wall of the flange of the steel column main beam (1). The shaping mechanism (4) is set between each pair of adjacent multi-web plate support steel plates (2), and the longitudinal rib group (6) can be clamped by the limiting circular groove (44) set on the surface of the fixed triangular block (41) which is fixedly connected to the multi-web plate support steel plate (2), and the longitudinal rib group (6) can be clamped and fixed by the limiting connecting block (42) which is bolted to the fixed triangular block (41); The multi-web plate support steel plate (2) has multiple cavities inside. Each cavity inside the multi-web plate support steel plate (2) has multiple sets of horizontally evenly distributed transverse support plates (21) fixedly installed on one side of the main beam (1) of the steel column. The transverse support plates (21) have positioning grooves (22) inside. The transverse stirrups (5) are wrapped around the multiple sets of positioning grooves (22) and are kept in close contact with the multiple sets of transverse support plates (21). The connecting mechanism (3) includes a limiting fixing plate (31). The limiting fixing plate (31) is in contact with the outline of the wing plate and web plate at the edge of the multi-web plate support steel plate (2). The limiting fixing plate (31) and the multi-web plate support steel plate (2) are connected by multiple sets of bolts. The flange on one side of the main beam of the steel column (1) is connected in series with the flange of the main beam of the steel column (1). The flange on the side of the multi-web support steel plate (2) away from the main beam of the steel column (1) is also connected to the limiting and fixing plate (31) by multiple sets of bolts. A set of fixing ribs (32) is fixedly installed in the center of the limiting and fixing plate (31) along the horizontal direction. A fixing shaft (33) is fixedly installed at the end of the fixing rib (32) away from the multi-web support steel plate (2). The connecting mechanism (3) also includes a fastening threaded sleeve (34) and a load-bearing connecting block (35). The fastening threaded sleeve (34) and the load-bearing connecting block (35) are set outside the fixing rib (32) and are connected to the fixing shaft (33) by threaded connection. The fixed shaft (33) is fixedly installed with a first threaded connecting shaft (331) at one end away from the multi-web plate support steel plate (2), and the load-bearing connecting block (35) is fixedly installed with a second threaded connecting shaft (351) at one end close to the fixed rib (32). The fastening threaded sleeve (34) is sleeved on the outer side wall of the second threaded connecting shaft (351) and the first threaded connecting shaft (331) to connect the first threaded connecting shaft (331) and the second threaded connecting shaft (351).

2. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 1, characterized in that, The inner wall of the fastening threaded sleeve (34) is provided with internal threads that are adapted to the first threaded connecting shaft (331) and the second threaded connecting shaft (351), and the threads of the second threaded connecting shaft (351) and the first threaded connecting shaft (331) rotate in opposite directions.

3. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 1, characterized in that, The fixed shaft (33) is positioned close to the fastening threaded sleeve (34) on one side, and multiple sets of ring-shaped limiting blocks (332) are movably sleeved along the axis of the fixed shaft (33). A compression spring (333) is fixedly installed between the limiting blocks (332) and the inside of the fixed shaft (33). Multiple sets of limiting grooves (341) that are adapted to the outer contour of the limiting blocks (332) are opened on the side of the fastening threaded sleeve (34) close to the fixed shaft (33).

4. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 3, characterized in that, The limiting block (332) extends to the edge of the fixed shaft (33) and is beveled in the same direction.

5. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 1, characterized in that, The shaping mechanism (4) includes a fixed triangular block (41), which is fixedly installed on the outer side wall of two adjacent fixed ribs (32). The surface of the fixed triangular block (41) is provided with multiple sets of limiting circular grooves (44). A set of limiting connecting blocks (42) is also provided on the outside of the fixed triangular block (41). The side wall of the limiting connecting block (42) close to the fixed triangular block (41) is provided with an arc-shaped groove that matches the limiting circular groove (44). A set of fastening bolts (43) that penetrate the limiting connecting block (42) are threadedly connected to the side wall of the limiting connecting block (42). A set of threaded grooves that match the fastening bolts (43) are provided at the center of the side wall of the fixed triangular block (41). The fixed triangular block (41) and the fastening bolts (43) are threadedly connected by the fastening bolts (43).

6. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 5, characterized in that, The length of the threaded groove at the center of the fixed triangular block (41) is greater than the length of the stud of the fastening bolt (43), and the threaded groove at the center of the fixed triangular block (41) does not contact the limiting circular groove (44) inside the fixed triangular block (41).

7. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 5, characterized in that, The inner walls of the arc-shaped grooves of the limiting circular groove (44) and the limiting connecting block (42) are provided with anti-slip textures.

8. The circumferential steel plate stirrups in the beam-column joint area of ​​a stiffened structural structure according to claim 5, characterized in that, The shaping mechanism (4) is designed symmetrically in two sets along the vertical direction and is symmetrically distributed along the horizontal centerline of the multi-web support steel plate (2).

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