A high-strength steel structure beam-column connection node

Abstract

This utility model discloses a high-strength steel structure beam-column connection node, comprising: a column connecting plate, installed on a steel structure column; a beam placement seat, vertically installed at the center of the column connecting plate and horizontally positioned, with a beam placement groove on its upper surface; a hinge shaft, vertically positioned on both sides of the column connecting plate, with a hinge seat movably mounted on it; and a clamping box, positioned above the beam placement seat and installed on the hinge seat. This utility model achieves lateral clamping of the H-shaped beam web and vertical locking of the flange plate by using the beam placement seat to support the H-shaped beam, and the clamping box to clamp the web plate of the H-shaped beam. The tightening of bolts creates multiple force paths, resulting in good stress performance and improved strength of the beam-column connection node.

Description

Technical Field

[0001] This utility model relates to the technical field of steel structure building, and in particular to a steel structure beam-column connection node with high connection strength. Background Technology

[0002] In traditional steel structure buildings, beam-column connections are critical components for transmitting bending moments and shear forces, and their performance directly affects the safety, stability, and seismic performance of the entire structure. Currently, the mainstream beam-column connection methods mainly include: welded connections, high-strength bolted connections, and hybrid bolted-welded connections.

[0003] Existing high-strength bolted connection nodes of various forms provide a certain degree of ductility and energy dissipation through the frictional slippage of the bolts. However, these nodes have many components, require high hole precision during installation, and are inconvenient to construct. Furthermore, the nodes have limited rotational capacity and are prone to local buckling or tearing failure of the end plate or column wall due to stress concentration under high-intensity earthquakes. Therefore, a steel structure beam-column connection node with high connection strength is needed. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a steel structure beam-column connection node with high connection strength.

[0005] To achieve the above objectives, the technical solution of this utility model is a steel structure beam-column connection node with high connection strength, comprising:

[0006] The column connecting plate is installed on the steel structure column and is fastened with multiple sets of bolts and nuts;

[0007] The crossbeam placement seat is vertically installed at the center of the column connecting plate and horizontally set. Angle bracing plates are installed on both sides of the center of its lower surface. The angle bracing plates are connected to the column connecting plate. A crossbeam placement groove is opened on its upper surface. The cross-section of the crossbeam placement groove is an inverted isosceles trapezoid, so that the lower flange plate of the H-shaped crossbeam is placed in the crossbeam placement groove. Bolt holes are set on both sides of the center of the lower surface of the crossbeam placement groove.

[0008] The hinge shaft is vertically set on both sides of the column connecting plate and is mounted on the column connecting plate through the shaft seat. It is located above the crossbeam placement seat and the hinge seat is movably mounted on it.

[0009] The clamping square boxes are placed above the crossbeam placement seat and installed on the hinge seat. The two clamping square boxes are inserted into the H-shaped crossbeam by rotating through the hinge seat and clamping the web of the H-shaped crossbeam. The inside of the clamping square boxes is equipped with reinforcing ribs, which are vertically arranged and evenly distributed. The inside of the clamping square boxes is equipped with several transverse bolt tubes, which are horizontally arranged and evenly distributed. Vertical bolt tubes are arranged on both sides of the center of the inside of the clamping square boxes, which are vertically arranged and correspond to the bolt hole positions.

[0010] The transverse bolts are inserted into the transverse bolt tubes at the corresponding positions on the two clamping square boxes, and pass through the corresponding bolt holes on the web of the H-shaped beam. A transverse nut is installed at one end of each bolt.

[0011] Vertical bolts pass through bolt holes and are inserted into corresponding vertical bolt tubes. They also pass through bolt holes on the upper and lower flanges of the H-shaped crossbeam, and vertical nuts are installed on them. The vertical nuts are located between the two corner braces.

[0012] Preferably, the clamping box utilizes the rotation of the hinge seat to allow for rotational adjustment, thus completely opening the space above the beam placement slot.

[0013] Preferably, the width of the lower surface of the crossbeam placement slot is the same as the width of the lower flange plate of the H-shaped crossbeam.

[0014] Preferably, the width of the column connecting plate at the location of the hinge shaft is greater than the width of the steel structure column.

[0015] Preferably, the lower end of the bolt hole has a regular hexagonal groove, so that the hexagonal bolt head of the vertical bolt is fitted into the regular hexagonal groove.

[0016] Preferably, one end of the transverse bolt tube on one of the clamping boxes has the same regular hexagonal groove, so that the hexagonal bolt head of the transverse bolt is fitted into the regular hexagonal groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By placing the H-shaped beam on the crossbeam support, clamping the web of the H-shaped beam with the clamping box, and locking it with bolts, the web of the H-shaped beam is horizontally clamped and the flange plate is vertically locked, forming multiple force paths, which has good stress performance and improves the strength of the beam-column connection node.

[0019] 2. The design of the rotatable and openable clamping box greatly facilitates the installation and positioning of the H-shaped beam, making construction easier. At the same time, the hinged design of the clamping box provides freedom of rotation, giving the joint the ability to rotate slightly and ductility, thereby improving the seismic resistance. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a high-strength steel structure beam-column connection node according to the present invention;

[0021] Figure 2 This utility model describes Figure 1 Side view;

[0022] Figure 3This is a top view of the clamping box described in this utility model after it has been opened;

[0023] Figure 4 This is a cross-sectional view of the clamping box described in this utility model;

[0024] In the picture:

[0025] 1. Column connecting plate; 2. Horizontal beam placement seat; 21. Angle brace plate; 22. Horizontal beam placement groove; 23. Bolt hole; 3. Hinge shaft; 31. Hinge seat; 4. Clamping box; 41. Reinforcing rib plate; 42. Horizontal bolt tube; 43. Vertical bolt tube; 5. Horizontal bolt; 51. Horizontal nut; 6. Vertical bolt; 61. Vertical nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a technical solution, such as Figures 1-4 As shown; a steel structure beam-column connection node with high connection strength includes: a column connection plate 1, which is installed on the steel structure column and fastened by multiple sets of bolts and nuts; the fastening of multiple sets of bolts and nuts enables the column connection plate 1 to be stably installed on the steel structure column.

[0028] The crossbeam placement seat 2 is vertically installed at the center of the column connecting plate 1 and horizontally set. Angle bracing plates 21 are installed on both sides of the center of its lower surface. The angle bracing plates 21 are connected to the column connecting plate 1. A crossbeam placement groove 22 is opened on its upper surface. The cross section of the crossbeam placement groove 22 is an inverted isosceles trapezoid, so that the lower flange plate of the H-shaped crossbeam is placed in the crossbeam placement groove 22. Bolt holes 23 are provided on both sides of the center of the lower surface of the crossbeam placement groove 22.

[0029] In this embodiment of the utility model, the corner brace 21 is used to form a strong triangular support between the beam placement seat 2 and the column connecting plate 1, so as to prevent the beam placement seat from warping, disperse concentrated stress, and improve fatigue performance.

[0030] In this embodiment of the utility model, the crossbeam placement groove 22 is used to enable the crossbeam placement seat 2 to provide stable vertical support for the H-shaped crossbeam. Furthermore, the cross-section of the crossbeam is an inverted isosceles trapezoid, which allows the H-shaped crossbeam to be automatically centered. This greatly simplifies the installation process, reduces the accuracy requirements for high-altitude operations, saves time for adjustment and alignment, and improves construction efficiency and safety.

[0031] In this embodiment of the utility model, the bolt holes 23 are used to enable the vertical bolts 6 to be installed, thereby enabling the entire node to achieve the function of clamping from top to bottom, thus improving the bending resistance. At the same time, the alignment of the H-shaped beam with the bolt holes 23 reduces the difficulty of drilling at height, and the bolt holes on the H-shaped beam can be quickly aligned to improve installation efficiency.

[0032] Hinged shafts 3 are vertically positioned on both sides of the column connecting plate 1 and mounted on the column connecting plate 1 via shaft seats, located above the crossbeam placement seat 2. Hinged seats 31 are movably mounted on them. Clamping square boxes 4 are positioned above the crossbeam placement seat 2 and mounted on the hinged seats 31. The two clamping square boxes are inserted into the H-shaped crossbeam by rotating through the hinged seats 31, clamping the web of the H-shaped crossbeam. Reinforcing ribs 41 are installed inside the boxes, vertically and evenly distributed. Several transverse bolt tubes 42 are installed inside the boxes, horizontally and evenly distributed within the clamping square boxes. Inside the square box 4, vertical bolt tubes 43 are installed on both sides of the center of the interior. The vertical bolt tubes 43 are vertically installed and correspond to the positions of the bolt holes 23. The horizontal bolts 5 are inserted into the horizontal bolt tubes 42 at the corresponding positions on the two clamping square boxes 4, and pass through the corresponding bolt holes on the web of the H-shaped beam. A horizontal nut 51 is installed at one end of the bolts 5. The vertical bolts 6 pass through the bolt holes 23 and are inserted into the corresponding vertical bolt tubes 43. They also pass through the bolt holes on the upper and lower flanges of the H-shaped beam. A vertical nut 61 is installed on the bolts 6, and the vertical nut 61 is located between the two corner braces 21.

[0033] In this embodiment of the utility model, the space above the crossbeam placement slot 22 is completely opened by the rotation of the clamping box 4 with the hinge shaft 3, so that the H-shaped crossbeam can be hoisted onto the crossbeam placement seat 2 without any obstruction, so as to facilitate the hoisting and alignment of the H-shaped crossbeam.

[0034] In this embodiment of the utility model, the movable hinge of the hinge seat 31 is used to allow the clamped box to rotate slightly when the H-shaped beam is subjected to a large bending moment (such as during an earthquake), instead of rigidly transmitting all the bending moment. By using the slight rotation, the stress concentration in the core area of ​​the node can be released, avoiding random failure, while also enabling the node to have a certain ductile deformation capacity to improve seismic toughness.

[0035] In this embodiment of the utility model, the use of the horizontal bolt tube 42 and the vertical bolt tube 43 can, on the one hand, strengthen the strength of the clamping box 4 and work together with the reinforcing rib plate 41 to improve the overall strength of the clamping box 4 and prevent it from deforming. On the other hand, it can also quickly align the various holes and protect the bolts.

[0036] In this embodiment of the invention, a horizontal bolt 5 is used to pass horizontally through the web of the two clamping boxes and the crossbeam, and is locked by the horizontal nut 51 to form a horizontal clamping constraint; while a vertical bolt 6 is used to pass vertically through the clamping box, the upper flange of the crossbeam, the lower flange of the crossbeam, and the crossbeam placement seat, and is locked by the vertical nut 61 to form a vertical anchoring constraint. Thus, the horizontal bolt 5 and the vertical bolt 6 together construct a spatial constraint system, and by supporting and limiting each other, they firmly combine the beam, node, and column into a whole that can work together, which greatly improves the connection strength, stiffness, and stability of the node.

[0037] In this invention, the clamping box 4 utilizes the rotation of the hinge seat 31 to allow for rotational adjustment, thus completely opening the space above the beam placement slot 22; this facilitates the hoisting and positioning of the H-shaped beam, making its installation more convenient.

[0038] In this invention, the width of the lower surface of the crossbeam placement groove 22 is the same as the width of the lower flange plate of the H-shaped crossbeam; this provides a stable support surface and reduces the installation difficulty of the H-shaped crossbeam.

[0039] In this utility model, the width of the column connecting plate 1 at the location of the hinge shaft 3 is greater than the width of the steel structure column; providing sufficient installation space and load-bearing foundation for the hinge shaft 3 and the hinge seat 31, so as to facilitate the installation and fixing of the H-shaped beam.

[0040] In this invention, the lower end of the bolt hole 23 has a regular hexagonal groove, which allows the hexagonal bolt head of the vertical bolt 6 to be fitted into the regular hexagonal groove. One end of the horizontal bolt tube 42 on the clamping box 4 has the same regular hexagonal groove, which allows the hexagonal bolt head of the horizontal bolt 5 to be fitted into the regular hexagonal groove. This prevents the horizontal bolt 5 and the vertical bolt 6 from rotating, making bolt tightening more convenient and faster.

[0041] When using this utility model, the staff will pre-tighten the column connecting plate 1 to the designated position on the steel structure column using multiple sets of high-strength bolts, so that the device can be installed on the steel structure column. Then, the steel structure column with the node module installed will be hoisted to the design position and then corrected and fixed.

[0042] When it is necessary to install the H-shaped crossbeam, the staff first manually rotates the two clamping square boxes 4 outward around the hinge shaft 3 to fully open them and completely open the upper area of ​​the crossbeam placement slot 22. Then, the H-shaped crossbeam can be hoisted and placed above the crossbeam placement seat 2. The H-shaped crossbeam is then slowly lowered, and the lower flange plate of the H-shaped crossbeam is automatically aligned and placed steadily into the crossbeam placement slot 22 by relying on the guiding action of the inclined surfaces on both sides of the crossbeam placement slot 22. During this process, the staff observes the position of the bolt holes 23 and the bolt holes on the lower flange plate of the H-shaped crossbeam, and adjusts the H-shaped crossbeam to align the bolt holes 23 with the bolt holes on the lower flange plate.

[0043] After the H-shaped crossbeam is aligned, the two open clamping boxes 4 can be rotated inward so that they can smoothly wrap around the web of the H-shaped crossbeam from both sides, thus completing the closure. At this time, the bolt holes on the web are completely aligned with the transverse bolt tubes 42 on the clamping boxes 4, and the vertical bolt tubes 43 are also aligned with the bolt holes on the upper and lower flanges.

[0044] Then, the workers can insert the transverse bolts 5 one by one into the transverse bolt tubes 42 of the square box 4 clamped on one side, so that they pass through the web plate and come out from the corresponding transverse bolt tubes 42 of the square box 4 clamped on the other side. Then, install the transverse nuts 51, and then insert the vertical bolts 6 upward into the bolt holes 23 on the crossbeam placement seat 2, and pass through the pre-drilled bolt holes on the lower flange plate, the vertical bolt tube, and the pre-drilled bolt holes on the upper flange plate in sequence, and install the vertical nuts 61.

[0045] Finally, the workers inserted the bolt heads of the horizontal bolt 5 and the vertical bolt 6 into the regular hexagonal grooves and rotated them. Then, they tightened the horizontal nut 51 and the vertical nut 61 and checked the final torque of the horizontal nut 51 and the vertical nut 61 to ensure that they met the designed preload requirements. The installation work was then completed.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel structural beam-column connection joint with high connection strength, characterized by, include: The column connecting plate is installed on the steel structure column and is fastened with multiple sets of bolts and nuts; The crossbeam placement seat is vertically installed at the center of the column connecting plate and horizontally set. Angle bracing plates are installed on both sides of the center of its lower surface. The angle bracing plates are connected to the column connecting plate. A crossbeam placement groove is opened on its upper surface. The cross-section of the crossbeam placement groove is an inverted isosceles trapezoid, so that the lower flange plate of the H-shaped crossbeam is placed in the crossbeam placement groove. Bolt holes are set on both sides of the center of the lower surface of the crossbeam placement groove. The hinge shaft is vertically set on both sides of the column connecting plate and is mounted on the column connecting plate through the shaft seat. It is located above the crossbeam placement seat and the hinge seat is movably mounted on it. The clamping square boxes are placed above the crossbeam placement seat and installed on the hinge seat. The two clamping square boxes are inserted into the H-shaped crossbeam by rotating through the hinge seat and clamping the web of the H-shaped crossbeam. The inside of the clamping square boxes is equipped with reinforcing ribs, which are vertically arranged and evenly distributed. The inside of the clamping square boxes is equipped with several transverse bolt tubes, which are horizontally arranged and evenly distributed. Vertical bolt tubes are arranged on both sides of the center of the inside of the clamping square boxes, which are vertically arranged and correspond to the bolt hole positions. The transverse bolts are inserted into the transverse bolt tubes at the corresponding positions on the two clamping square boxes, and pass through the corresponding bolt holes on the web of the H-shaped beam. A transverse nut is installed at one end of each bolt. Vertical bolts pass through bolt holes and are inserted into corresponding vertical bolt tubes. They also pass through bolt holes on the upper and lower flanges of the H-shaped crossbeam, and vertical nuts are installed on them. The vertical nuts are located between the two corner braces.

2. The steel beam-to-column connection joint with high strength according to claim 1, characterized in that, The clamping box can be rotated and adjusted by the rotation of the hinge seat, so that the space above the crossbeam placement slot is completely open.

3. The steel beam-to-column connection joint with high strength according to claim 1, characterized in that, The width of the lower surface of the crossbeam placement slot is the same as the width of the lower flange plate of the H-shaped crossbeam.

4. The steel beam-to-column connection joint with high strength according to claim 1, characterized in that, The width of the column connecting plate at the location of the hinge axis is greater than the width of the steel structure column.

5. A high-strength steel structure beam-column connection node according to claim 1, characterized in that, The lower end of the bolt hole has a regular hexagonal groove, so that the hexagonal bolt head of the vertical bolt can be fitted into the regular hexagonal groove.

6. The steel beam-to-column connection of claim 1, wherein One end of the transverse bolt tube on one of the clamping boxes has the same regular hexagonal groove, so that the hexagonal bolt head of the transverse bolt is fitted into the regular hexagonal groove.

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