Steel frame beam-column joint structure with improved progressive collapse resistance

Abstract

The invention relates to the technical field of steel frame beam-column joints, in particular to a steel frame beam-column joint structure with improved progressive collapse resistance, which comprises a support column, mounting mechanisms are arranged on both sides of the support column, and a plurality of steel structure support frames are sequentially arranged on both sides of the support column. Through detachable connection between every two adjacent steel structure supporting frames and detachable connection between the steel structure supporting frames and the supporting stand columns, the connection firmness is fully guaranteed, meanwhile, when collapse occurs, the covered range can be reduced, the problem of continuous collapse is avoided, and the service life of the steel structure supporting frames is prolonged. Meanwhile, the two steel structure supporting frames can be fully clamped and fixed through the arc-shaped supporting plates, the two adjacent steel structure supporting frames can be connected through matching of the arc-shaped supporting plates and the arc-shaped supporting plates, connection firmness is ensured, and connection with the steel beams in the plane is completed through the connecting threaded holes.

Description

Technical Field

[0001] The invention relates to the technical field of steel frame beam-column nodes, and in particular to a steel frame beam-column node structure with improved progressive collapse resistance. Background Art

[0002] Existing beam-column joints in steel structures are often secured to the steel beams through welding. While these joints offer significant bearing capacity and stability, plastic hinges are often generated at the welds. Once cracks develop in these welds, the bearing capacity plummets, significantly compromising the structure's resistance to progressive collapse. Recently, numerous researchers have explored various weakening strategies to shift these plastic hinges outward, thereby improving progressive collapse resistance. For example, dogbone weakening in the beam flanges enables beam-column joints to meet the seismic design requirements and progressive collapse resistance requirements for strong joints before cracking; circular hole weakening in the beam webs improves the ductility and progressive collapse resistance of beam-column joints. However, these weakening-based joint ductility improvements often reduce the structure's bearing capacity under large deformations, causing premature failure, leading to underutilization of some materials and wasted beam member bearing capacity.

[0003] Publication number CN220285019U discloses a steel frame beam-column node structure with improved resistance to continuous collapse, comprising a steel column with steel beams welded horizontally on both sides of the steel column. The steel column and the steel beam are both I-beams, and at least one beam connecting plate is provided at intervals along the length of the steel beam between the two legs on the left and right sides of the web at the ends of the steel beam. A force-bearing device is provided between two adjacent beam connecting plates, and between adjacent beam connecting plates and the corresponding steel column leg plates. An opening is provided in the middle of the web at the ends of the steel beam, between two adjacent beam connecting plates, and between adjacent beam connecting plates and the corresponding steel column leg plates. This application solves the problem of insufficient bearing capacity of the weakened section of the beam-column node by combining measures such as weakening the web section and strengthening the web reinforcement; it not only moves the plastic hinge outward, improving the node ductility, but also improves the bearing capacity of the weakened section under large deformation, forming a secondary defense mechanism to resist continuous collapse of the structure.

[0004] In the above technical solution, a single beam is used on one side as multiple beams on the base support plane. When the supporting beam becomes loose, it will still cause large-scale collapse, and the stability of the steel frame beams and columns cannot be fully guaranteed, so improvement is needed. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a steel frame beam-column node structure with improved progressive collapse resistance.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A steel frame beam-column node structure with improved progressive collapse resistance includes a support column, mounting mechanisms are provided on both sides of the support column, and a plurality of steel structure support frames are sequentially provided on both sides of the support column, wherein the two steel structure support frames located on both sides of the support column are respectively connected to the two mounting mechanisms at both ends of the support column; The upper ends of two adjacent steel structure support frames are in common contact with an arc-shaped pressure plate part, and the arc-shaped pressure plate part is detachably connected to an arc-shaped support and contact plate assembly, and a plurality of connecting threaded holes are evenly spaced on both sides of the upper end of the arc-shaped support and contact plate assembly, and supporting arc plates are fixed on both sides of the lower end of the arc-shaped support and contact plate assembly, and the two supporting arc plates respectively conflict with the corresponding two steel structure support frames, and a connecting partition part is fixed in the arc-shaped support and contact plate assembly, and a screw mechanism is provided in the connecting partition part, and a lifting plate and a synchronous connecting screw part are provided on the screw mechanism, and the lifting plate is slidably installed in the arc-shaped support and contact plate assembly, and the lifting plate and the arc-shaped pressure plate part conflict; The two steel structure support frames are located on both sides of the connecting partition member, and the two steel structure support frames are both connected to the screw mechanism.

[0007] Compared with the existing technology, the present application uses a detachable connection between two adjacent steel structure support frames and a detachable connection between the steel structure support frame and the supporting column. While fully ensuring the firmness of the connection, when collapse occurs, the scope of the impact will be reduced, avoiding the problem of continuous collapse. At the same time, the two steel structure support frames can be fully clamped by the supporting arc plates, and the connection between the two adjacent steel structure support frames can be completed through the cooperation of and, and the firmness of the connection can be ensured, and the connection with the in-plane steel beam is completed through the connecting threaded holes.

[0008] Preferably, a limiting groove is provided at the upper end of the steel structure support frame, and the limiting groove is located at the lower end of the arc-shaped pressure plate component. A limiting plug-in component is fixed in the arc-shaped pressure plate component, and the limiting plug-in component extends into the limiting groove.

[0009] Furthermore, by cooperating with the limiting plug-in parts and the limiting grooves, the relative position relationship between the steel structure support frame and the arc pressure plate part can be fully limited, so as to cooperate with the screw mechanism to make the two steel structure support frames move relative to each other, thereby improving the connection relationship between the two steel structure support frames and the connecting partition part.

[0010] Preferably, notches are provided on both sides of the arc-shaped pressure plate member, and the two ends of the arc-shaped support and contact plate assembly extend to the two notches respectively. Support fixing plates are fixed on both ends of the arc-shaped support and contact plate assembly, and the support fixing plates are located at the lower end of the arc-shaped pressure plate member. An adjusting screw member is passed through the support fixing plate, and adjusting screw holes are provided on both sides of the arc-shaped pressure plate member. Two adjusting screw members are respectively screwed into the two adjusting screw holes, and the upper end of the adjusting screw member is screwed with a limiting nut member, and the limiting nut member and the upper end of the arc-shaped pressure plate member conflict with each other.

[0011] Furthermore, through the cooperation of the notch and the arc-shaped support and contact plate assembly, the preliminary connection of the arc-shaped pressure plate member and the arc-shaped support and contact plate assembly can be completed, so that the adjusting screw member and the adjusting screw hole can be connected. At the same time, the arc-shaped pressure plate member can be moved toward the arc-shaped support and contact plate assembly through screwing to control the arc-shaped pressure plate member to squeeze the pressure rod member. Then, through the cooperation of the pressure rod member and the corresponding components, the connection between the screw member and the steel structure support frame can be realized synchronously.

[0012] Preferably, both ends of the arc-shaped supporting contact plate assembly are fixed with contact top plate members, and the two contact top plate members are respectively arranged on the upper ends of the two adjusting screw members.

[0013] Furthermore, during actual preparation, the arc-shaped support and contact plate assembly, the support and fixing plate, and the contact top plate are integrally formed, which can effectively improve the connection strength, and a reinforcing plate is provided between the support and fixing plate and the arc-shaped support and contact plate assembly, and between the contact top plate and the arc-shaped support and contact plate assembly to improve the connection strength, and the connecting partition member and the arc-shaped support and contact plate assembly are integrally formed.

[0014] Preferably, the screw mechanism includes an installation cavity arranged in the connecting partition member, a through-hole is opened on one side of the upper end of the installation cavity, the through-hole corresponds to the arc-shaped support and contact plate assembly, a sliding member is slidably installed at the bottom of the installation cavity, the upper end of the sliding member is rotatably connected to an oblique push rod member, the synchronous connection screw member passes through the installation cavity and extends to both sides of the connecting partition member, the two ends of the synchronous connection screw member extend to the two ends of the connecting partition member respectively, the synchronous connection screw member is located in the installation cavity. A through hole is provided on one side, the upper end of the oblique push rod member extends into the through-hole, the upper end of the sliding member is rotatably connected to an oblique rod, the upper end of the oblique rod is rotatably connected to the lifting plate, and one end of the lifting plate extends into the installation cavity.

[0015] Furthermore, the lifting plate can be lowered through the interference between the pressure rod and the arc-shaped pressure plate, and the lifting plate can move the sliding member through the inclined rod. The movement of the sliding member can cause the inclined push rod to push the synchronous connecting screw member to rotate. As the sliding member moves, the inclined push rod can gradually rotate toward a vertical position, which can cause the synchronous connecting screw member to rotate. When setting, the threaded engagement at both ends of the synchronous connecting screw member corresponds to the threads in the two connecting screw holes respectively. This can enable the connecting screw holes on the two steel structure support frames and the synchronous connecting screw member to be connected when the synchronous connecting screw member rotates, so that the two steel structure support frames can move toward the direction of the connecting partition member. At the same time, during actual preparation, both ends of the synchronous connecting screw member are hemispherically set, which is convenient for quick connection with the connecting screw holes.

[0016] Preferably, an I-shaped guide rail is fixed to the bottom of the installation cavity, and the sliding member is slidably installed on the I-shaped guide rail.

[0017] Furthermore, the stability of the movement of the sliding member is ensured by the action of the sliding member and the I-shaped guide rail.

[0018] Preferably, an opening is provided on one side of the arc-shaped support and contact plate assembly, the opening and the through-hole are arranged in a through-connected manner, the lifting plate is arranged through the opening and the through-hole, the lifting plate is slidably installed in the opening, and a pressure rod is fixed on one end of the lifting plate extending out of the arc-shaped support and contact plate assembly.

[0019] Furthermore, during actual production and preparation, two slide rod components are fixed in the opening, and the two slide rod components can fully ensure the stability of the lifting plate and the pressure rod component during lifting.

[0020] Preferably, connecting screw holes are provided at opposite ends of the two steel structure support frames, and both ends of the synchronous connecting screw member are respectively threadedly sleeved in the two connecting screw holes.

[0021] Furthermore, by cooperating with the connecting screw holes and the synchronously connecting screw members, the internal connection can be completed, and the firmness of the connection can be fully improved.

[0022] Preferably, the arc-shaped supporting and contacting plate assembly and the two supporting and fixing plates are integrally formed.

[0023] Furthermore, the firmness of the connection is fully improved.

[0024] Preferably, the mounting mechanism includes two supporting transverse shafts fixed on both sides of the supporting column, the upper ends of the two supporting transverse shafts are provided with limit plates, the two limit plates are fixedly connected to the supporting columns, the supporting transverse shafts are screwed to the steel structure support frame, and four connecting bolts are provided on both sides of the supporting column, and the four connecting bolts on the same side are respectively threadedly sleeved on both ends of the steel structure support frame; The limiting plate extends into the limiting groove at the upper end of the steel structure support frame.

[0025] Furthermore, the limiting plate can fully realize the limitation of the steel structure support frame, and the supporting horizontal axis can effectively limit the steel structure support frame and fully support the steel structure support frame; Moreover, the connection firmness between the steel structure support frame and the support column can be improved by connecting the bolts.

[0026] The beneficial effects of the present invention are: 1. The supporting cross-axis can be connected and fixed to the supporting column by welding, and a longer supporting cross-axis can also be provided to penetrate the supporting column, so that one supporting cross-axis can be connected and fixed to the two steel structure support frames on both sides of the supporting column. At the same time, the two steel structure support frames can be prevented from rotating by the limit plate, and the steel structure support frames and the supporting column are connected and fixed by the action of four connecting bolts; 2. The arc-shaped support contact plate assembly and the two supporting arc plates can support two adjacent steel structure support frames, and multiple connecting threaded holes are set on both sides of the arc-shaped support contact plate assembly to connect and fix the flat support steel frame with it. At the same time, when collapse occurs, the two adjacent steel structure support frames will be separated, reducing their impact on other supporting columns and fully controlling their collapse range; 3. The relative position relationship between the steel structure support frame and the arc-shaped pressure plate can be fully limited by the cooperation of the limiting plug-in member and the limiting groove, so that the two steel structure support frames can be relatively moved by cooperating with the screw mechanism, thereby improving the connection relationship between the two steel structure support frames and the connecting partition member; the initial connection between the arc-shaped pressure plate member and the arc-shaped support contact plate assembly can be completed by cooperating with the notch and the arc-shaped support contact plate assembly, so that the adjusting screw member and the adjusting screw hole can be connected, and at the same time, the arc-shaped pressure plate member can be moved toward the arc-shaped support contact plate assembly by screwing, so as to control the arc-shaped pressure plate member to squeeze the pressure rod member, and then the pressure rod member and the corresponding components can be used to achieve the connection of the synchronous connection screw member and the steel structure support frame; 4. In actual preparation, the arc-shaped support and contact plate assembly, the support fixing plate and the contact top plate are integrally formed, which can effectively improve the connection strength. Reinforcement plates are provided between the support fixing plate and the arc-shaped support and contact plate assembly, and between the contact top plate and the arc-shaped support and contact plate assembly to improve the connection strength. The connecting partition member and the arc-shaped support and contact plate assembly are integrally formed. 5. The lifting plate can be lowered by the interference between the pressure rod and the arc-shaped pressure plate, and the lifting plate can move the sliding member through the oblique rod. The movement of the sliding member can cause the oblique push rod to push the synchronous connecting screw member to rotate. As the sliding member moves, the oblique push rod can gradually rotate toward the vertical position, which can cause the synchronous connecting screw member to rotate. When setting, the threaded engagement at both ends of the synchronous connecting screw member corresponds to the threads in the two connecting screw holes respectively. This can enable the connecting screw holes on the two steel structure support frames and the synchronous connecting screw member to be connected when the synchronous connecting screw member rotates, so that the two steel structure support frames can move toward the direction of the connecting partition member. At the same time, during actual preparation, both ends of the synchronous connecting screw member are hemispherically set, which is convenient for quick connection with the connecting screw holes; 6. During actual production and preparation, two sliding rod components are fixed in the opening. At the same time, the two sliding rod components can fully ensure the stability of the lifting plate and the pressure rod. Through the cooperation of the connecting screw holes and the synchronous connecting screw parts, the internal connection can be completed, and the firmness of the connection can be fully improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the present invention; Figure 2 An internal diagram of the arc-shaped support and contact plate assembly and the support and fixing plate of the present invention; Figure 3 A structural diagram of the arc-shaped support and contact plate assembly and the support and fixing plate in the present invention; Figure 4 It is a structural diagram of the arc-shaped pressing plate member in the present invention; Figure 5 A diagram showing the connection structure of the partition member and the arc-shaped support and contact plate assembly in the present invention; Figure 6 The present invention is attached Figure 2 A magnified view of point A; Figure 7 The present invention is attached Figure 2 Enlarged view of point B; In the figure: 1 arc-shaped support and contact plate assembly, 2 support fixing plate, 3 contact top plate, 4 arc-shaped pressure plate, 5 limit plug-in, 6 limit slot, 7 steel structure support frame, 8 adjustment screw, 9 limit nut, 10 through hole, 11 connecting partition, 12 synchronous connection screw, 13 installation cavity, 14 connecting screw hole, 15 adjustment screw hole, 16 notch, 17 oblique push rod, 18 lifting plate, 19 opening, 20 through hole, 21 oblique rod, 22 sliding member, 23 pressure rod, 24 support arc plate, 25 support column, 26 connecting bolt, 27 support horizontal axis, 28 limit plate, 29 connecting threaded hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-7 , a steel frame beam-column node structure with improved anti-continuous collapse performance, including a support column 25, characterized in that: both sides of the support column 25 are provided with mounting mechanisms, and both sides of the support column 25 are sequentially provided with multiple steel structure support frames 7. During actual production and preparation, the steel structure support frames 7 can be set to corresponding shapes as needed. When the shapes of the steel structure support frames 7 are different, the corresponding components will also be adjusted synchronously. For example, the structures of the arc-shaped support contact plate assembly 1, the support arc plate 24, and the arc pressure plate member 4 are also adjusted to ensure that they can effectively contact the steel structure support frames 7. The two steel structure support frames 7 located on both sides of the support column 25 are respectively connected to the two mounting mechanisms at both ends of the support column 25; the mounting mechanism can make the two steel structure support frames 7 on both sides of the support column 25 fully connected and fixed to the support column 25, and during actual production and preparation, the support column 25 can be connected and fixed to the support cross shaft 27 by welding, or a longer support cross shaft 27 can be set to ensure that the support cross shaft 27 can be fixed to the support column 25.

[0030] Reference Figure 1-7 The mounting mechanism includes two supporting transverse shafts 27 fixed on both sides of the supporting column 25. The upper ends of the two supporting transverse shafts 27 are provided with limiting plates 28. The two limiting plates 28 are fixedly connected to the supporting column 25. The supporting transverse shafts 27 and the steel structure support frame 7 are screwed together. Four connecting bolts 26 are provided on both sides of the supporting column 25. The four connecting bolts 26 on the same side are respectively threadedly sleeved on the two ends of the steel structure support frame 7; the limiting plates 28 can fully realize the limiting of the steel structure support frame 7, and the supporting transverse shafts Part 27 can effectively limit the steel structure support frame 7 and fully support the steel structure support frame 7; the limiting plate 28 extends into the limiting groove 6 at the upper end of the steel structure support frame 7. Through the action of the limiting plate 28, the steel structure support frame 7 connected to the support column 25 cannot rotate, thereby ensuring its stability, so that the two adjacent steel structure support frames 7 can be moved relative to each other through the subsequent synchronous connection screw member 12, so that the synchronous connection screw member 12 can enter the steel structure support frame 7, and cooperate with the arc-shaped support contact plate assembly 1 and the arc-shaped pressure plate member 4 to complete the fixation.

[0031] Reference Figure 1-7, the upper ends of the two adjacent steel structure support frames 7 are in common contact with an arc-shaped pressure plate member 4, and the arc-shaped pressure plate member 4 can realize the contact with the upper ends of the opposite sides of the two adjacent steel structure support frames 7, and the arc-shaped pressure plate member 4 is detachably connected to the arc-shaped support and contact plate assembly 1, and a plurality of connecting threaded holes 29 are evenly spaced on both sides of the upper end of the arc-shaped support and contact plate assembly 1, and supporting arc plates 24 are fixed on both sides of the lower end of the arc-shaped support and contact plate assembly 1, and the two supporting arc plates 24 respectively conflict with the corresponding two steel structure support frames 7, and the arc-shaped support and contact plate assembly 1 and the arc-shaped pressure plate member 4 are firmly connected. Notches 16 are provided on both sides of the arc-shaped pressure plate member 4, and the two ends of the arc-shaped support and contact plate assembly 1 extend to the two notches 16 respectively. Both ends of the arc-shaped support and contact plate assembly 1 are fixed with support fixing plates 2, and the support fixing plates 2 is located at the lower end of the arc-shaped pressure plate member 4, and an adjusting screw member 8 is passed through the support and fixing plate 2. Adjusting screw holes 15 are provided on both sides of the arc-shaped pressure plate member 4. The two adjusting screw members 8 are screwed into the two adjusting screw holes 15 respectively, and the upper end of the adjusting screw member 8 is screwed with a limiting nut member 9, and the limiting nut member 9 and the upper end of the arc-shaped pressure plate member 4 conflict with each other; through the cooperation of the notch 16 and the arc-shaped support and contact plate assembly 1, the preliminary connection of the arc-shaped pressure plate member 4 and the arc-shaped support and contact plate assembly 1 can be completed, so that the adjusting screw member 8 and the adjusting screw hole 15 are connected, and at the same time, the arc-shaped pressure plate member 4 can be moved toward the arc-shaped support and contact plate assembly 1 by screwing, so as to control the arc-shaped pressure plate member 4 to squeeze the pressure rod member 23, and then through the cooperation of the pressure rod member 23 and the corresponding components, the connection of the synchronous connection screw member 12 and the steel structure support frame 7 can be achieved.

[0032] Reference Figure 1-7 , a connecting partition member 11 is fixed in the arc-shaped support and contact plate assembly 1, a screw mechanism is provided in the connecting partition member 11, a lifting plate 18 and a synchronous connecting screw member 12 are provided on the screw mechanism, the lifting plate 18 is slidably installed in the arc-shaped support and contact plate assembly 1, the lifting plate 18 and the arc-shaped pressure plate member 4 are in conflict, the screw mechanism includes a mounting cavity 13 provided in the connecting partition member 11, a through-hole 20 is provided on one side of the upper end of the mounting cavity 13, the through-hole 20 corresponds to the arc-shaped support and contact plate assembly 1, and a sliding member 22 is slidably installed at the bottom of the mounting cavity 13 The upper end of the sliding member 22 is rotatably connected to the oblique push rod 17, and the synchronously connected screw member 12 passes through the mounting cavity 13 and extends to both sides of the connecting partition member 11. The two ends of the synchronously connected screw member 12 extend to the two ends of the connecting partition member 11 respectively. The synchronously connected screw member 12 is located on one side of the mounting cavity 13 and is provided with a through hole 10. The upper end of the oblique push rod 17 extends into the through hole 10. The upper end of the sliding member 22 is rotatably connected to the oblique rod 21. The upper end of the oblique rod 21 is rotatably connected to the lifting plate 18, and one end of the lifting plate 18 extends into the mounting cavity 13.

[0033] Reference Figure 1-7The lifting plate 18 can be lowered by the interference between the pressure rod 23 and the arc-shaped pressure plate 4, and the lifting plate 18 can move the sliding member 22 through the inclined rod 21. The movement of the sliding member 22 can enable the inclined push rod 17 to push the synchronous connecting screw member 12 to rotate. As the sliding member 22 moves, the inclined push rod 17 can gradually rotate toward the vertical position, which can enable the synchronous connecting screw member 12 to rotate. When setting, the threads at both ends of the synchronous connecting screw member 12 correspond to the threads in the two connecting screw holes 14 respectively. This can enable the synchronous connecting screw member 12 to complete the connection between the connecting screw holes 14 and the synchronous connecting screw member 12 when the synchronous connecting screw member 12 rotates, so that the two steel structure support frames 7 move toward the direction of the connecting partition member 11. At the same time, during actual preparation, both ends of the synchronous connecting screw member 12 are hemispherically set, which is convenient for quick connection with the connecting screw holes 14.

[0034] Reference Figure 1-7 , the two steel structure support frames 7 are located on both sides of the connecting partition member 11, and the two steel structure support frames 7 are connected to the screw mechanism. The opposite ends of the two steel structure support frames 7 are in conflict with the arc-shaped pressure plate member 4 and the arc-shaped support and contact plate assembly 1. The upper end of the steel structure support frame 7 is provided with a limiting groove 6, and the limiting groove 6 is located at the lower end of the arc-shaped pressure plate member 4. A limiting plug-in member 5 is fixed in the arc-shaped pressure plate member 4, and the limiting plug-in member 5 extends into the limiting groove 6; after the arc-shaped pressure plate member 4 and the arc-shaped support and contact plate assembly 1 are preliminarily connected, they are placed between the two steel structure support frames 7, and the two steel structure support frames 7 are respectively set on both sides of the connecting partition member 11, and the limiting plug-in member 5 is inserted into the corresponding limiting groove 6; By rotating the adjusting screw member 8, the staff can move the arc-shaped pressure plate member 4 toward the support fixed plate 2. As the arc-shaped pressure plate member 4 moves downward, it can resist the pressure rod member 23 to lower the lifting plate 18, and the inclined rod 21 can push the sliding member 22 so that the inclined push rod member 17 drives the synchronous connecting screw member 12 to rotate. The rotation of the synchronous connecting screw member 12 can make the steel structure support frame 7 move between the arc-shaped support resistance plate assembly 1 and the arc-shaped pressure plate member 4 to complete the connection.

[0035] Reference Figure 1-5 , both ends of the arc-shaped support and contact plate assembly 1 are fixed with contact top plate parts 3, and the two contact top plate parts 3 are respectively arranged at the upper ends of the two adjusting screw parts 8; the arc-shaped support and contact plate assembly 1 and the two support fixing plates 2 are formed as one piece; in actual preparation, the arc-shaped support and contact plate assembly 1, the support fixing plate 2 and the contact top plate part 3 are formed as one piece, which can effectively improve the connection strength, and reinforcement plates are provided between the support fixing plate 2 and the arc-shaped support and contact plate assembly 1 and the contact top plate part 3 and the arc-shaped support and contact plate assembly 1 to improve the connection strength, and the connecting partition part 11 and the arc-shaped support and contact plate assembly 1 are formed as one piece.

[0036] Reference Figure 7 An I-shaped guide rail is fixed to the bottom of the installation cavity 13, and the sliding member 22 is slidably installed on the I-shaped guide rail; the stability of the movement of the sliding member 22 is ensured by the action of the sliding member 22 and the I-shaped guide rail.

[0037] Reference Figure 1-6 An opening 19 is provided on one side of the arc-shaped supporting and contacting plate assembly 1, and the opening 19 and the through-hole 20 are connected. The lifting plate 18 is penetrated and arranged on the opening 19 and the through-hole 20. The lifting plate 18 is slidably installed in the opening 19, and a pressure rod 23 is fixed to one end of the lifting plate 18 extending out of the arc-shaped supporting and contacting plate assembly 1; in actual production and preparation, two sliding rod components are fixed in the opening 19, and the two sliding rod components can fully ensure the stability of the lifting and lowering of the lifting plate 18 and the pressure rod 23.

[0038] Reference Figure 1-3 , the two steel structure support frames 7 are each provided with a connecting screw hole 14 at the opposite end, and the two ends of the synchronous connecting screw member 12 are respectively threadedly sleeved in the two connecting screw holes 14; through the cooperation of the connecting screw holes 14 and the synchronous connecting screw member 12, the internal connection can be completed, and the firmness of the connection can be fully improved.

[0039] In the present invention, when constructing the steel structure, the firmness of the support column 25 is ensured. The limit plate 28 can prevent 7 from rotating, and the support cross shaft 27 can support 7. Moreover, the connection and fixation between 7 and the support column 25 can be achieved by the connecting bolt 26, so as to effectively complete the support of the edge 7. Afterwards, 11 is set between two adjacent 7. The support of the two adjacent 7 can be achieved by 1 and the supporting arc plate 24, and 4 can be squeezed to complete the fixation of 11. After the arc-shaped pressure plate 4 and the arc-shaped support and contact plate assembly 1 are preliminarily connected, they are placed between the two steel structure support frames 7, and the two steel structure support frames 7 are respectively set on both sides of the connecting partition member 11, and the limiting plug-in member 5 is inserted into the corresponding limiting groove 6; The staff can move the arc-shaped pressure plate member 4 toward the direction of the support fixed plate 2 by rotating the adjustment screw member 8. As the arc-shaped pressure plate member 4 moves downward, it can resist the pressure rod member 23 to lower the lifting plate 18, and the inclined rod 21 can push the sliding member 22 so that the inclined push rod member 17 drives the synchronous connection screw member 12 to rotate. The rotation of the synchronous connection screw member 12 can make the steel structure support frame 7 move between the arc-shaped support and contact plate assembly 1 and the arc-shaped pressure plate member 4 to complete the connection; When collapse occurs, the connection between the two 7s will be broken, but this break will not be transmitted to ensure that continuous collapse will not occur.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A steel frame beam-column node structure with improved progressive collapse resistance, comprising a support column (25), characterized in that: Both sides of the support column (25) are provided with mounting mechanisms, and both sides of the support column (25) are sequentially provided with a plurality of steel structure support frames (7), and the two steel structure support frames (7) located on both sides of the support column (25) are respectively connected to the two mounting mechanisms at both ends of the support column (25); The upper ends of two adjacent steel structure support frames (7) are in common contact with an arc-shaped pressure plate member (4), and an arc-shaped support and contact plate assembly (1) is detachably connected to the arc-shaped pressure plate member (4), and a plurality of connecting threaded holes (29) are evenly spaced on both sides of the upper end of the arc-shaped support and contact plate assembly (1), and supporting arc plates (24) are fixed on both sides of the lower end of the arc-shaped support and contact plate assembly (1), and the two supporting arc plates (24) are respectively in contact with the corresponding two steel structure support frames (7), and a connecting partition member (11) is fixed in the arc-shaped support and contact plate assembly (1), and a screw mechanism is provided in the connecting partition member (11), and a lifting plate (18) and a synchronous connecting screw member (12) are provided on the screw mechanism, and the lifting plate (18) is slidably installed in the arc-shaped support and contact plate assembly (1), and the lifting plate (18) and the arc-shaped pressure plate member (4) are in contact; The two steel structure support frames (7) are located on both sides of the connecting partition member (11), and the two steel structure support frames (7) are both connected to the screw mechanism.

2. A steel frame beam-column joint structure with improved progressive collapse resistance according to claim 1, characterized in that: A limiting groove (6) is provided at the upper end of the steel structure support frame (7), and the limiting groove (6) is located at the lower end of the arc-shaped pressure plate component (4). A limiting insert component (5) is fixed in the arc-shaped pressure plate component (4), and the limiting insert component (5) extends into the limiting groove (6).

3. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 1, characterized in that: Both sides of the arc-shaped pressure plate member (4) are provided with notches (16), and both ends of the arc-shaped support and contact plate assembly (1) extend to the two notches (16) respectively. Both ends of the arc-shaped support and contact plate assembly (1) are fixed with support fixing plates (2), and the support fixing plates (2) are located at the lower end of the arc-shaped pressure plate member (4). An adjusting screw member (8) is passed through the support fixing plate (2). Both sides of the arc-shaped pressure plate member (4) are provided with adjusting screw holes (15), and two adjusting screw members (8) are screwed into the two adjusting screw holes (15) respectively. The upper end of the adjusting screw member (8) is screwed with a limiting nut member (9), and the limiting nut member (9) and the upper end of the arc-shaped pressure plate member (4) are in conflict with each other.

4. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 3, characterized in that: Both ends of the arc-shaped supporting contact plate assembly (1) are fixed with contact top plate members (3), and the two contact top plate members (3) are respectively arranged on the upper ends of the two adjusting screw members (8).

5. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 1, characterized in that: The screw mechanism includes a mounting cavity (13) provided in the connecting partition member (11), a through-hole (20) is provided on one side of the upper end of the mounting cavity (13), the through-hole (20) corresponds to the arc-shaped support and contact plate assembly (1), a sliding member (22) is slidably installed at the bottom of the mounting cavity (13), the upper end of the sliding member (22) is rotatably connected to the oblique push rod member (17), the synchronous connecting screw member (12) passes through the mounting cavity (13) and extends to the connecting partition member (11). On both sides, the two ends of the synchronous connection screw member (12) extend to the two ends of the connection partition member (11) respectively, and a through hole (10) is provided on one side of the synchronous connection screw member (12) located in the installation cavity (13). The upper end of the inclined push rod member (17) extends into the through hole (10), and the upper end of the sliding member (22) is rotatably connected to the inclined rod (21). The upper end of the inclined rod (21) is rotatably connected to the lifting plate (18), and one end of the lifting plate (18) extends into the installation cavity (13).

6. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 5, characterized in that: An I-shaped guide rail is fixed to the bottom of the installation cavity (13), and the sliding member (22) is slidably installed on the I-shaped guide rail.

7. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 5, characterized in that: An opening (19) is provided on one side of the arc-shaped support and contact plate assembly (1), and the opening (19) and the through-hole (20) are connected. The lifting plate (18) is connected through the opening (19) and the through-hole (20), and the lifting plate (18) is slidably installed in the opening (19). A pressure rod (23) is fixed to one end of the lifting plate (18) extending out of the arc-shaped support and contact plate assembly (1).

8. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 1, characterized in that: The two steel structure support frames (7) are each provided with a connecting screw hole (14) at one opposite end, and the two ends of the synchronous connecting screw member (12) are respectively threadedly sleeved in the two connecting screw holes (14).

9. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 3, characterized in that: The arc-shaped supporting and contacting plate assembly (1) and the two supporting and fixing plates (2) are integrally formed.

10. The steel frame beam-column joint structure with improved progressive collapse resistance according to claim 1, characterized in that: The mounting mechanism comprises two supporting transverse shafts (27) fixed on both sides of the supporting column (25), the upper ends of the two supporting transverse shafts (27) are provided with limit plates (28), the two limit plates (28) are fixedly connected to the supporting column (25), the supporting transverse shafts (27) and the steel structure support frame (7) are screwed together, and four connecting bolts (26) are provided on both sides of the supporting column (25), and the four connecting bolts (26) on the same side are respectively threadedly sleeved on both ends of the steel structure support frame (7); The limiting plate (28) extends into the limiting groove (6) at the upper end of the steel structure support frame (7).

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