Plug-in rocking column steel frame structure of setting synergistic self-resetting composite wall and prefabrication and installation method

Abstract

The application discloses a kind of setting up insert swing column steel frame structure of synergistic self-resetting composite wall and prefabrication and installation method, structure includes steel frame column, steel frame beam, cold-bent thin-walled steel composite wall, friction damper and high elastic material, friction damper includes first, second and third friction damper, steel frame beam is through setting at each floor elevation of structure, steel frame column is gradually arranged between adjacent layer steel frame beam, and is fixedly connected with steel frame beam by first and second friction damper;Cold-bent thin-walled steel composite wall is arranged in the rectangular frame formed by steel frame beam and steel frame column, and upper and lower end is fixedly connected with steel frame beam by third friction damper, and is embedded and filled densely with steel frame column and steel frame beam by high-strength material around.The steel frame main structure and non-structural infill wall of the present application can be slightly damaged or even zero damage under the action of earthquake, less replacement or even free replacement after disaster, and the structure has good seismic toughness and high prefabrication efficiency.

Description

Technical Field

[0001] This invention relates to building structure technology, and in particular to a steel frame structure with plug-in swing columns and a method for prefabrication and installation of a self-resetting composite wall. Background Technology

[0002] The ability of building structures to maintain their functionality after an earthquake is a crucial prerequisite for achieving earthquake-resistant cities. Most areas of my country are located in medium- to high-intensity seismic fortification zones, and instances of structures losing their functionality due to excessive residual deformation after an earthquake are not uncommon. Excessive residual deformation not only increases the technical difficulty and economic burden of post-earthquake repair work but can even lead to the forced demolition and reconstruction of damaged structures. Therefore, restorable functional structural systems emphasizing zero post-earthquake damage, zero residual deformation, or minimal damage that allows for easy repair and reuse have garnered widespread attention from scholars and industry worldwide.

[0003] Due to their simple construction, superior energy dissipation capacity, and good ductility, steel frame structures are considered an important seismic-resistant structural system and are widely used in engineering. Traditional steel frame structures often require large cross-sectional dimensions to meet the requirements of inter-story drift and total lateral displacement. Under seismic loading, they typically dissipate seismic energy through plastic deformation at beam-column joints. Therefore, traditional steel frame structures suffer from drawbacks such as high steel consumption and large residual deformation, failing to meet the requirement for rapid post-earthquake functional recovery in steel structures. To achieve the design goal of post-earthquake functional recovery in steel frame structures, most existing technologies introduce prestressing techniques and shape memory alloys into traditional steel frame structures to form self-resetting steel frames. However, these technologies have disadvantages such as complex construction, easy stress relaxation, and high cost. Furthermore, the infill walls of steel frame structures suffer particularly severe damage under seismic loading, and the secondary injuries, casualties, and property losses caused by infill wall failure are also significant. Summary of the Invention

[0004] Purpose of the invention: The present invention aims to provide a steel frame structure with plug-in swaying columns and an enhanced self-resetting composite wall; another purpose of the present invention is to provide a prefabrication and installation method for a steel frame structure with plug-in swaying columns and an enhanced self-resetting composite wall.

[0005] Technical Solution: The present invention provides a steel frame structure with plug-in swing column and self-resetting composite wall, comprising steel frame columns, steel frame beams, cold-formed thin-walled steel composite wall, friction dampers, and high-elasticity material. The friction dampers include a first friction damper, a second friction damper, and a third friction damper. The steel frame beams are continuously installed at each floor level of the structure. The steel frame columns are installed layer by layer between the steel frame beams of adjacent floors and are fixedly connected to the steel frame beams through the first and second friction dampers. The cold-formed thin-walled steel composite wall is installed within a rectangular frame formed by the steel frame beams and steel frame columns, and the upper and lower ends of the cold-formed thin-walled steel composite wall are fixedly connected to the flanges of the steel frame beams through the third friction damper. The perimeter of the cold-formed thin-walled steel composite wall is tightly embedded with the steel frame columns and steel frame beams through high-strength material.

[0006] Under seismic loading, the steel frame columns sway to isolate the earthquake and utilize the first friction damper to dissipate energy and reset. Simultaneously, the second friction damper forms a shear safety pin to further dissipate energy, forming the first layer of seismic toughness mechanism at the structural level. The cold-formed thin-walled steel composite wall sways under seismic loading to further isolate the earthquake and amplifies the deformation of the third friction damper to improve energy dissipation efficiency. At the same time, the third friction damper has a self-resetting effect, forming the second layer of seismic toughness mechanism at the non-structural component level.

[0007] Optionally, the first friction damper includes a column shoe and a reset steel plate. The bottom of the column shoe is fixedly connected to the flange of the steel frame beam. Two column shoe connecting plates on the side of the column shoe are fixedly connected to the ear plates of the steel frame column. Reset steel plates are provided at the upper and lower ends of the column shoe connecting plates and ear plates. The upper and lower reset steel plates are fixedly connected, and the upper and lower reset steel plates and the two ear plates form a closed space.

[0008] Optionally, friction material is provided between the column shoe connecting plate and the ear plate, and a pad is provided on the other side of the ear plate. The upper and lower reset steel plates are fixedly connected by a high-strength tie rod.

[0009] Optionally, the second friction damper is an L-shaped structure, with the side wall of the L-shaped component fixedly connected to the web of the steel frame column, and friction material provided between the side wall of the L-shaped component and the web of the steel frame column; the bottom plate of the L-shaped component is fixedly connected to the flange of the steel frame beam.

[0010] Optionally, the third friction damper includes a slider and a clamping plate, wherein a groove is provided in the middle of the slider, and beam shoes are provided at both ends of the slider. The clamping plate is symmetrically arranged on the upper and lower surfaces of the middle of the slider, and the contact surface between the clamping plate and the middle of the slider is provided with a structure that matches the groove. The third friction damper is fixedly connected to the flanges of the cold-formed thin-walled steel composite wall and the steel frame beam, respectively.

[0011] Optionally, the first friction damper's column shoe connecting plate and pad plate are fixedly connected to the ear plate of the steel frame column, the second friction damper's L-shaped component sidewall is fixedly connected to the web plate of the steel frame column, and the third friction damper's clamping plate and slider middle part are fixedly connected to the flange of the cold-formed thin-walled steel composite wall and the steel frame beam by ring spring bolts. The ring spring bolts include high-strength screws and ring spring nuts. The ring spring nuts are composed of a double-conical inner ring, a single-conical middle ring, a double-conical middle ring, a double-conical outer ring, and a hexagonal nut. The high-strength screw of the ring spring bolt in the third friction damper is pre-embedded in the cold-formed thin-walled steel composite wall.

[0012] Optionally, the outer sides of the flanges at the upper and lower ends of the steel frame column are symmetrically provided with ear plates; the steel frame beam includes a beam body, beam stiffening ribs, web joints, flange joints and connecting plates. Two adjacent beam bodies are fixedly connected by web joints, flange joints and connecting plates. The web joint is provided at any end of the web of the beam body and extends outward by a predetermined length. The webs of two spliced ​​beam bodies are fixedly connected by web joints. The flange joints are provided on the outer sides of the upper and lower flanges at both ends of the beam body. The flange joints at the ends of two spliced ​​beam bodies are fixedly connected by connecting plates.

[0013] Optionally, the cold-formed thin-walled steel composite wall includes a cold-formed thin-walled steel frame, lightweight concrete, a cladding panel, reinforcing steel plates, embedded high-strength bolts, and U-shaped steel plates. The cold-formed thin-walled steel frame is formed by connecting cold-formed thin-walled steel composite columns, cross braces, and guide rails. The cladding panel is fixedly connected to both sides of the cold-formed thin-walled steel frame. Lightweight concrete is poured into the interior of the cold-formed thin-walled steel composite columns and into the cavity formed by the cold-formed thin-walled steel frame and the cladding panels on both sides. The reinforcing steel plates are placed inside the guide rails and fixedly connected to the web of the guide rails via embedded high-strength bolts. The U-shaped steel plates are placed outside the guide rails, and the web of the U-shaped steel plates is fixedly connected to the web of the guide rails via embedded high-strength bolts. The flanges of the U-shaped steel plates are fixedly connected to the cladding panels.

[0014] Based on the same inventive concept, the present invention provides a prefabrication method for a steel frame structure with an interlocking sway column and an enhanced self-resetting composite wall, comprising prefabricated steel frame columns, steel frame beams, cold-formed thin-walled steel composite walls, and friction dampers, specifically:

[0015] After cutting the main body of the steel frame column to the designed length, the column stiffening ribs are welded along the column height and the end strengthening plates are welded to both ends of the column body. Then, the ear plates are welded in pairs to the outer side of the flanges at both ends of the steel frame column to complete the prefabrication of the steel frame column.

[0016] After cutting the main body of the steel frame beam to the designed length, weld the stiffening ribs along the beam length, weld the web plate joint to the web plate at one end of the main body of the steel frame beam, and reserve a certain overhang length. At the same time, weld the flange joint to the upper and lower flanges at both ends of the steel frame beam to complete the prefabrication of the steel frame beam.

[0017] After splicing multiple cold-formed thin-walled steel components to form a cold-formed thin-walled steel composite column, lightweight concrete is poured into the cavity of the cold-formed thin-walled steel composite column to complete the prefabrication of the cold-formed thin-walled steel composite column. Then, several cold-formed thin-walled steel composite columns are inserted into cold-formed thin-walled steel guide rails at equal intervals, and several cross braces are set between adjacent cold-formed thin-walled steel composite columns. The cold-formed thin-walled steel composite columns, cross braces, and guide rails are then fixedly connected to form a cold-formed thin-walled steel frame. Next, one side of the cladding panel is fixedly connected to the cold-formed thin-walled steel frame, and after the reinforcing steel plate and pre-embedded high-strength bolts are installed in the design position, lightweight concrete is poured into the cavity formed by the cold-formed thin-walled steel frame and the cladding panel. Finally, after the lightweight concrete reaches the design strength, the other side of the cladding panel is installed, and the pre-embedded high-strength bolts are passed through the web of the U-shaped steel plate. At the same time, the flange of the U-shaped steel plate is fixedly connected to the cladding panel to complete the prefabrication of the cold-formed thin-walled steel composite wall.

[0018] Prefabricate several column shoes, L-shaped parts, sliders, clamping plates, double-conical inner rings, single-conical intermediate rings, double-conical intermediate rings, and double-conical outer rings to complete the prefabrication of the friction damper.

[0019] Based on the same inventive concept, the present invention provides an installation method for a steel frame structure with a plug-in sway column and an enhanced self-resetting composite wall, comprising the following steps:

[0020] First, complete the prefabrication of steel frame columns, steel frame beams, cold-formed thin-walled steel composite walls and friction dampers according to the above steps;

[0021] Then, the prefabricated components are installed on the construction site. The installation process is as follows:

[0022] Install the first-floor steel frame columns: After fixing the column shoes, pads, and friction materials to the ear plates of the steel frame columns with ring spring bolts, install the reset steel plates and high-strength tie rods, and symmetrically install the friction materials and L-shaped parts on both sides of the web plates at both ends of the steel frame columns with ring spring bolts. Then, hoist the steel frame columns to the designed positions and fix the column shoes and L-shaped parts to the foundation to complete the installation of the steel frame columns.

[0023] Installation of the first-floor steel frame beam: After installing the steel frame beam in the designed position, fix the column shoe and L-shaped member to the lower flange of the steel frame beam; then, at the joint of the steel frame beam, fix the web plate joint to the web of the adjacent steel frame beam, and fix the adjacent flange joints through the connecting plate to complete the installation of the first-floor steel frame beam.

[0024] Installation of the first-floor cold-formed thin-walled steel composite wall: After passing the pre-embedded high-strength bolts at the upper and lower ends of the cold-formed thin-walled steel composite wall through the slider and clamp and fixing them, the cold-formed thin-walled steel composite wall is installed in the rectangular frame composed of steel frame columns and steel frame beams. The beam shoes at both ends of the slider are fixedly connected to the foundation and the lower flange of the steel frame beam to complete the installation of the first-floor cold-formed thin-walled steel composite wall.

[0025] Install the remaining steel frame columns, steel frame beams, and cold-formed thin-walled steel composite walls according to the above steps, and embed high-elastic material into the gaps between the steel frame columns, steel frame beams, and cold-formed thin-walled steel composite walls to complete the installation of the overall structure.

[0026] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0027] (1) This invention establishes a dual seismic toughness mechanism for steel frame structures from two levels: the main frame structure and the non-structural component infill wall. Specifically, the steel frame columns isolate the seismic action through swaying motion under seismic action, and use the first friction damper to dissipate energy and reset. At the same time, the second friction damper forms a shear safety pin and further dissipates energy, thus forming the first seismic toughness mechanism at the structural level. The top and bottom of the cold-formed thin-walled steel composite wall are connected to the flange of the steel frame beam only through the beam shoe at the end of the slider. Therefore, the cold-formed thin-walled steel composite wall will sway under seismic action to further isolate the seismic action, and will amplify the deformation of the third friction damper at the top and bottom of the cold-formed thin-walled steel composite wall, thereby improving the energy dissipation efficiency. At the same time, the annular spring bolt and wedge-shaped section slider in the third friction damper also have a self-resetting effect, which can prevent the cold-formed thin-walled steel composite wall from undergoing large-area damage that is difficult to repair due to excessive deformation, thus forming the second seismic toughness mechanism at the non-structural component level.

[0028] (2) The first and third friction dampers in this invention have both energy dissipation and self-resetting effects, which can avoid the use of complex prestressed tendon technology and expensive shape memory alloy. In addition, the annular spring nut used for connecting each friction damper in this invention is composed of three layers of conical rings, which improves the bearing capacity of the bolt and has a self-resetting function, which has significant advantages over disc spring washers.

[0029] (3) The steel frame beams in this invention are arranged in a continuous manner and the steel frame columns are arranged in a layered manner. Compared with the existing prestressed steel frame beam-column joint technology, this invention can avoid the floor damage caused by the incoordination between the deformation of the beam-column joint and the deformation of the floor slab. In addition, the joint of the steel frame beam in this invention is provided with a flange joint with a wedge-shaped section and a connecting plate. This joint method has high connection strength, simple construction and self-resetting effect, which can significantly improve the integrity of the spliced ​​steel frame beam.

[0030] (4) The cold-formed thin-walled steel composite wall of the present invention adopts cross-section cold-formed thin-walled steel splicing column and lightweight concrete. The "mortise and tenon" connection between the two materials is conducive to giving full play to the synergistic shear resistance effect of the two, so that the cold-formed thin-walled steel composite wall has micro-damage or even zero-damage characteristics, can be reused and is easy to disassemble and assemble, and belongs to low-carbon toughness non-structural component infill wall.

[0031] (5) All components of this invention can be prefabricated in the factory, making on-site installation simple and greatly improving construction efficiency. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a steel frame structure with an insertable rocking column and an enhanced self-resetting combined wall, according to the present invention.

[0033] Figure 2 This is a schematic diagram of the steel frame column in this invention;

[0034] Figure 3 This is a schematic diagram of the steel frame beam structure in this invention;

[0035] Figure 4 This is a schematic diagram of the construction of the cold-formed thin-walled steel composite wall in this invention;

[0036] Figure 5 This is a schematic diagram showing the connection between the first and second friction dampers and the steel frame column in this invention.

[0037] Figure 6 This is a schematic diagram of the connection of the third friction damper of the present invention;

[0038] Figure 7 This is a schematic diagram of the cross-section of the AA structure;

[0039] Figure 8 This is a schematic diagram of the cross-section of the BB structure;

[0040] Figure 9 This is a schematic diagram of the structure of the column boot of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of the L-shaped component of the present invention;

[0042] Figure 11 This is a schematic diagram of the structure of the third friction damper of the present invention;

[0043] Figure 12 This is a schematic diagram of the structure of the annular spring bolt of the present invention;

[0044] Figure 13 This is a cross-sectional schematic diagram of the annular spring bolt of the present invention.

[0045] In the diagram: Steel frame column 1, column body 11, rotating slide 111, end reinforcing plate 12, column stiffening rib 13, ear plate 14; Steel frame beam 2, beam body 21, beam stiffening rib 22, web joint 23, flange joint 24, connecting plate 25; Cold-formed thin-walled steel composite wall 3, cold-formed thin-walled steel frame 31, cold-formed thin-walled steel spliced ​​column 311, cross brace 312, guide rail 313, lightweight concrete 32, cladding panel 33, reinforcing steel plate 34, embedded high-strength bolt 35, U-shaped steel plate 36, friction damper 4, first friction damper 41, column shoe 411. Column shoe connecting plate 4111. Pad plate 412. Reset steel plate 414. High-strength tie rod 415. Second friction damper 42. L-shaped part 421. Third friction damper 43. Slider 431. Slide groove 4311. Beam shoe 4312. Clamping plate 432. Friction material 44. Ring spring bolt 45. High-strength screw 451. Ring spring nut 452. Double conical inner ring 4521. Single conical intermediate ring 4522. Double conical intermediate ring 4523. Double conical outer ring 4524. Hexagonal nut 4525. High-strength bolt 5. High-elasticity material 6. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0047] like Figure 1 As shown, the present invention discloses a steel frame structure with an interlocking swaying column and an enhanced self-resetting composite wall, comprising a steel frame column 1, a steel frame beam 2, a cold-formed thin-walled steel composite wall 3, a friction damper 4, high-strength bolts 5, and a high-elasticity material 6. The steel frame beam 2 is continuously installed at each floor level of the structure. The steel frame column 1 is installed layer by layer between adjacent steel frame beams 2 and is fixedly connected to the steel frame beam 2 by the friction damper 4 and high-strength bolts 5. The cold-formed thin-walled steel composite wall 3 is installed within a rectangular frame formed by the steel frame beam 2 and the steel frame column 1. The upper and lower ends of the cold-formed thin-walled steel composite wall 3 are fixedly connected to the flanges of the steel frame beam 2 by the friction damper 4 and high-strength bolts 5. The perimeter of the cold-formed thin-walled steel composite wall 3 is tightly embedded with the steel frame column 1 and the steel frame beam 2 by the high-elasticity material 6.

[0048] like Figure 2 As shown, the steel frame column 1 includes a column body 11, end reinforcing plates 12, column stiffening ribs 13, and ear plates 14 with slotted holes. The end reinforcing plates 12 are located at the upper and lower ends of the column body 11, the column stiffening ribs 13 are located between the flanges of the column body 11, and the ear plates 14 are welded to the outer sides of the flanges at the upper and lower ends of the column body 11. Rotation grooves 111 are provided at both ends of the web of the column body 11.

[0049] like Figure 3As shown, the steel frame beam 2 includes a beam body 21, beam stiffeners 22, web joints 23, flange joints 24, and connecting plates 25. Adjacent beam bodies 21 are fixedly connected via web joints 23, flange joints 24, and connecting plates 25. The web joint 23 is welded to either end of the beam body 21 and extends a certain length outward, being fixedly connected to the web of the adjacent beam body 21. The flange joints 24 are welded to the upper and lower flanges at both ends of the beam body 21, and the flange joints 24 at the joints of adjacent beam bodies 21 are fixedly connected via connecting plates 25. Beam stiffeners 22 are spaced apart between the flanges of the beam body 21. Bolt holes are pre-drilled at the flanges and webs, web joints 23, flange joints 24, and connecting plates 25 at the joint locations of the steel frame beam 2.

[0050] Preferably, the flange joint and the connecting plate have a wedge-shaped profile.

[0051] like Figure 4 As shown, the cold-formed thin-walled steel composite wall 3 includes a cold-formed thin-walled steel frame 31, lightweight concrete 32, a cladding panel 33, reinforcing steel plates 34, embedded high-strength bolts 35, and U-shaped steel plates 36. The cold-formed thin-walled steel frame 31 is formed by connecting cold-formed thin-walled steel composite columns 311, cross braces 312, and guide rails 313 with self-tapping screws. The cladding panel 33 is fixedly connected to both sides of the cold-formed thin-walled steel frame 31 with self-tapping screws. Lightweight concrete 32 is poured into the cold-formed thin-walled steel frame. Inside the steel composite column 311 and within the cavity formed by the cold-formed thin-walled steel frame 31 and the two side panel 33, a reinforcing steel plate 34 is disposed on the inner side of the guide rail 313 and is fixedly connected to the web of the guide rail 313 by pre-embedded high-strength bolts 35. A U-shaped steel plate 36 is disposed on the outer side of the guide rail 313, and the web of the U-shaped steel plate 36 is fixedly connected to the web of the guide rail 313 by pre-embedded high-strength bolts 35. The flange of the U-shaped steel plate 36 is fixedly connected to the panel 33 by self-tapping screws. Preferably, the U-shaped steel plate 36 and the reinforcing steel plate 34 are positioned correspondingly.

[0052] As a preferred option, the cold-formed steel composite column is a cross-shaped section column formed by assembling U-shaped and Z-shaped cold-formed thin-walled steel keels; the web of the cold-formed thin-walled steel cross brace is provided with several circular holes to facilitate the coordinated shear resistance of the lightweight concrete and the cold-formed thin-walled steel skeleton; the diameter of the pre-embedded high-strength screw should match the diameter of the double-conical inner ring and the hexagonal nut in the ring spring nut.

[0053] The cold-formed thin-walled steel composite wall 3 has pre-embedded high-strength bolts inside. These bolts pass through the slider and are fixedly connected to the clamping plate, but are not connected to the frame beam. Therefore, the slider and clamping plate can be prefabricated in the factory and installed on the composite wall. During on-site construction, only the beam shoe at the end of the slider needs to be connected to the frame beam. This simplifies the connection between the frame beam and the composite wall, creating a weak connection between them, reducing end constraints, and facilitating the swaying motion of the composite wall under seismic loads. This, in turn, causes the slider and clamping plate to move relative to each other, resulting in frictional energy dissipation.

[0054] like Figure 5-6 As shown, the friction damper 4 includes a first friction damper 41, a second friction damper 42, and a third friction damper 43. The first friction damper 41 is fixedly connected to the ear plate 14 of the steel frame column 1 and the flange of the steel frame beam 2 by means of annular spring bolts 45 and high-strength bolts 5, respectively. The second friction damper 42 is fixedly connected to the web of the steel frame column 1 and the flange of the steel frame beam 2 by means of annular spring bolts 45 and high-strength bolts 5, respectively. The third friction damper 43 is fixedly connected to the cold-formed thin-walled steel composite wall 3 and the flange of the steel frame beam 2 by means of pre-embedded high-strength bolts 35 and high-strength bolts 5, respectively.

[0055] like Figure 7-10 As shown, the first friction damper 41 includes a column shoe 411, a pad 412, a friction material 44, an annular spring bolt 45, a reset steel plate 414, and a high-strength tie rod 415. The bottom of the column shoe 411 is fixedly connected to the flange of the steel frame beam 2 by a high-strength bolt 5. The two column shoe connecting plates 4111 on the side of the column shoe 411 are fixedly connected to the ear plates 14 of the steel frame column 1 by annular spring bolts 45. A pad 412 is provided on the other side of the ear plate 14, and a friction material 44 is provided between the column shoe connecting plate 4111 and the ear plate 14. Reset steel plates 414 are provided at the upper and lower ends of the column shoe connecting plate 4111 and the ear plate 14. The upper and lower reset steel plates 414 are fixedly connected by a high-strength tie rod 415, and the upper and lower reset steel plates 414 and the two ear plates 14 form a closed space.

[0056] The second friction damper 42 includes an L-shaped component 421, friction material 44, and annular spring bolts 45. The side wall of the L-shaped component 421 is fixedly connected to the web of the steel frame column 1 by annular spring bolts 45, and friction material 44 is provided between the side wall of the L-shaped component 421 and the web of the steel frame column 1. The bottom plate of the L-shaped component 421 is fixedly connected to the flange of the steel frame beam 2 by high-strength bolts 5.

[0057] When an earthquake occurs, the steel frame columns begin to sway. Because the column shoes and ear plates are connected by ring spring bolts, the slotted holes on the ear plates allow the ring spring bolts to slide within the length of the slots, causing friction material to dissipate energy. The reset steel plate and high-strength tie rod are located at both ends of the ear plates and the pads. While the ear plates slide relative to the column shoes, the high-strength tie rods remain under tension, thus allowing the column to reset after swaying. Furthermore, the preload of the ring spring bolts increases with the amplitude of the column's sway, further contributing to energy dissipation and reset through internal friction within the ring spring bolts.

[0058] like Figure 11 As shown, the third friction damper 43 includes a slider 431, a clamping plate 432, a pre-embedded high-strength screw 35, and a ring spring nut 452. The slider 431 has a groove 4311 in its middle section and beam shoes 4312 at both ends. The clamping plate 432 is symmetrically arranged on the upper and lower surfaces of the middle section of the slider 431. The contact surface between the clamping plate 432 and the middle section of the slider has a structure matching the groove 4311. The clamping plate 432 and the middle section of the slider are fixedly connected to the flanges of the cold-formed thin-walled steel composite wall (3) and the steel frame beam (2) via the pre-embedded high-strength screw 35 and the ring spring nut 452. The beam shoes 4312 are fixedly connected to the flanges of the cold-formed thin-walled steel composite wall (3) and the steel frame beam (2) via high-strength bolts 5.

[0059] like Figure 12-13 As shown, the annular spring bolt 45 includes a high-strength screw 451 and an annular spring nut 452. The annular spring nut 452 is composed of a double-conical inner ring 4521, a single-conical intermediate ring 4522, a double-conical intermediate ring 4523, a double-conical outer ring 4524, and a hexagonal nut 4525.

[0060] A prefabrication method for a steel frame structure with plug-in sway columns and an enhanced self-resetting composite wall includes the following steps:

[0061] Step 1: After cutting the steel frame column body 11 to the designed length, weld the column stiffening ribs 13 along the column height and weld the end reinforcing plates 12 to both ends of the column body 11. Then, weld the ear plates 14 in pairs to the outer flanges of both ends of the steel frame column 1 to complete the prefabrication of the steel frame column 1.

[0062] Step 2: After cutting the main body 21 of the steel frame beam according to the design length, weld the stiffening ribs 22 along the beam length, weld the web plate joint 23 to the web plate at one end of the main body 21 of the steel frame beam, and reserve a certain overhang length. At the same time, weld the flange joint 24 to the upper and lower flanges at both ends of the steel frame beam 2 to complete the prefabrication of the steel frame beam.

[0063] Step 3: After splicing multiple cold-formed thin-walled steel components to form a cold-formed thin-walled steel composite column 311 using self-tapping screws, lightweight concrete 32 is poured into the cavity of the cold-formed thin-walled steel composite column 311 to complete the prefabrication of the cold-formed thin-walled steel composite column 311; then, several cold-formed thin-walled steel composite columns 311 are inserted into the cold-formed thin-walled steel guide rail 313 at equal intervals, and several cross braces 312 are set between adjacent cold-formed thin-walled steel composite columns 311. Finally, the cold-formed thin-walled steel composite columns 311, cross braces 312 and guide rail 313 are fixedly connected with self-tapping screws to form a cold-formed thin-walled steel frame 31. Furthermore, one side of the cladding panel 33 is fixedly connected to the cold-formed thin-walled steel frame 31 using self-tapping screws. After the reinforcing steel plate 34 and the pre-embedded high-strength bolts 35 are installed in the designed position, lightweight concrete 32 is poured into the cavity formed by the cold-formed thin-walled steel frame 31 and the cladding panel 33. Finally, after the lightweight concrete 32 reaches the design strength, the other side of the cladding panel 33 is installed using self-tapping screws, and the pre-embedded high-strength bolts 35 are passed through the web of the U-shaped steel plate 36. At the same time, the flange of the U-shaped steel plate 36 is fixedly connected to the cladding panel 33 using self-tapping screws, thus completing the prefabrication of the cold-formed thin-walled steel composite wall 3.

[0064] Step 4: Prefabricate several column shoes 411, L-shaped parts 421, sliders 431, clamping plates 432, double-conical inner rings 4521, single-conical intermediate rings 4522, double-conical intermediate rings 4523, and double-conical outer rings 4524 to complete the prefabrication of the friction damper 4.

[0065] After the prefabrication of steel frame columns, steel frame beams, cold-formed thin-walled steel composite walls and friction dampers is completed, the prefabricated components are installed on the construction site.

[0066] An installation method for a steel frame structure with plug-in swaying columns and an enhanced self-resetting composite wall includes the following steps:

[0067] Step 1: Install the first-floor steel frame column 1: After fixing the column shoe 411, pad 412 and friction material 44 to the ear plate 14 of the steel frame column 1 with ring spring bolts 45, install the reset steel plate 414 and high-strength tie rod 415, and symmetrically install the friction material 44 and L-shaped parts 421 on both sides of the web plate at both ends of the steel frame column 1 with ring spring bolts 45. Then, hoist the steel frame column 1 to the design position, and use high-strength bolts 5 to fix the column shoe 411 and L-shaped parts 421 to the foundation to complete the installation of the steel frame column 1.

[0068] Step 2: Install the first-floor steel frame beam 2: After installing the steel frame beam 2 in the designed position, use high-strength bolts 5 to fix the column shoe 411 and L-shaped piece 421 to the lower flange of the steel frame beam 2; then, at the joint of the steel frame beam 2, use high-strength bolts 5 to fix the overhang plate of the web joint 23 to the web of the adjacent steel frame beam 2, and fix the adjacent flange joint 24 to the high-strength bolts 5 through the connecting plate 25, thus completing the installation of the first-floor steel frame beam 2;

[0069] Step 3: Install the first-floor cold-formed thin-walled steel composite wall 3: After passing the pre-embedded high-strength bolts 35 at the upper and lower ends of the cold-formed thin-walled steel composite wall 3 through the slider 431 and the clamping plate 432 and fixing them with the ring spring nut 452, install the cold-formed thin-walled steel composite wall 3 in the rectangular frame composed of steel frame column 1 and steel frame beam 2, and fix the beam shoes 4312 at both ends of the slider 431 to the foundation and the lower flange of the steel frame beam 2 with high-strength bolts 5 to complete the installation of the first-floor cold-formed thin-walled steel composite wall 3;

[0070] Step 4: Install the remaining steel frame columns 1, steel frame beams 2 and cold-formed thin-walled steel composite walls 3 according to the above steps, and embed high-elastic material 6 into the gaps between the steel frame columns 1, steel frame beams 2 and cold-formed thin-walled steel composite walls 3 to complete the installation of the overall structure.

Claims

1. A steel frame structure with plug-in swing columns and an enhanced self-resetting composite wall, characterized in that, The system includes steel frame columns (1), steel frame beams (2), cold-formed thin-walled steel composite walls (3), friction dampers (4), and high-elasticity materials (6). The friction dampers (4) include a first friction damper (41), a second friction damper (42), and a third friction damper (43). The third friction damper (43) includes a slider (431) and a clamping plate (432). A groove (4311) is provided in the middle of the slider (431), and beam shoes (4312) are provided at both ends of the slider (431). The clamping plates (432) are symmetrically arranged on the upper and lower surfaces of the middle part of the slider (431). 2) A structure matching the slide groove (4311) is provided on the contact surface of the middle part of the slider; the third friction damper (43) is fixedly connected to the flanges of the cold-formed thin-walled steel composite wall (3) and the steel frame beam (2) respectively; the column shoe connecting plate (4111) and pad plate (412) of the first friction damper (41) are connected to the ear plate (14) of the steel frame column (1), the side wall of the L-shaped part (421) of the second friction damper (42) is connected to the web plate of the steel frame column (1), and the clamping plate (432) of the third friction damper (43) and the middle part of the slider are connected to the cold-formed thin-walled steel composite wall (3) and the steel frame beam. (2) The flanges are all fixedly connected by annular spring bolts (45). The annular spring bolts (45) include high-strength screws (451) and annular spring nuts (452). The annular spring nuts (452) are composed of a double-conical inner ring (4521), a single-conical middle ring (4522), a double-conical middle ring (4523), a double-conical outer ring (4524), and a hexagonal nut (4525). The high-strength screws (451) of the annular spring bolts (45) in the third friction damper (43) are pre-embedded in the cold-formed thin-walled steel composite wall (3). The steel frame beams (2) are continuously installed in each part of the structure. At each floor level, steel frame columns (1) are set between steel frame beams (2) of adjacent floors and are fixedly connected to steel frame beams (2) through a first friction damper (41) and a second friction damper (42); cold-formed thin-walled steel composite wall (3) is set in a rectangular frame formed by steel frame beams (2) and steel frame columns (1), and the upper and lower ends of the cold-formed thin-walled steel composite wall (3) are fixedly connected to the flanges of steel frame beams (2) through a third friction damper (43), and the cold-formed thin-walled steel composite wall (3) is tightly filled with high-strength material (6) to steel frame columns (1) and steel frame beams (2); Under seismic loading, the steel frame columns sway to isolate the earthquake and utilize the first friction damper to dissipate energy and reset. Simultaneously, the second friction damper forms a shear safety pin to further dissipate energy, forming the first layer of seismic toughness mechanism at the structural level. The cold-formed thin-walled steel composite wall sways under seismic loading to further isolate the earthquake and amplifies the deformation of the third friction damper to improve energy dissipation efficiency. At the same time, the third friction damper has a self-resetting effect, forming the second layer of seismic toughness mechanism at the non-structural component level.

2. The steel frame structure with plug-in swing columns and an efficiency-enhancing self-resetting composite wall as described in claim 1, characterized in that, The first friction damper (41) includes a column shoe (411) and a reset plate (414). The bottom of the column shoe (411) is fixedly connected to the flange of the steel frame beam (2). The two column shoe connecting plates (4111) on the side of the column shoe (411) are fixedly connected to the ear plates (14) of the steel frame column (1). The upper and lower ends of the column shoe connecting plate (4111) and the ear plate (14) are provided with reset plates (414). The upper and lower reset plates (414) are fixedly connected, and the upper and lower reset plates (414) and the two ear plates (14) form a closed space.

3. A steel frame structure with plug-in swing columns and an efficiency-enhancing self-resetting composite wall as described in claim 2, characterized in that, Friction material (44) is provided between the column shoe connecting plate (4111) and the ear plate (14). A pad (412) is provided on the other side of the ear plate (14). The upper and lower reset steel plates (414) are fixedly connected by a high-strength tie rod (415).

4. A steel frame structure with plug-in swing columns and an efficiency-enhancing self-resetting composite wall as described in claim 1, characterized in that, The second friction damper (42) is an L-shaped part (421) structure. The side wall of the L-shaped part (421) is fixedly connected to the web of the steel frame column (1), and friction material (44) is provided between the side wall of the L-shaped part (421) and the web of the steel frame column (1); the bottom plate of the L-shaped part (421) is fixedly connected to the flange of the steel frame beam (2).

5. A steel frame structure with plug-in swing columns and an efficiency-enhancing self-resetting composite wall as described in claim 1, characterized in that, The steel frame column (1) has ear plates (14) symmetrically arranged on the outer side of the flanges at the upper and lower ends; the steel frame beam (2) includes a beam body (21), a beam stiffening rib (22), a web joint (23), a flange joint (24) and a connecting plate (25). Two adjacent beam bodies (21) are fixedly connected by the web joint (23), the flange joint (24) and the connecting plate (25). The web joint (23) is set at any end of the web of the beam body (21) and extends outward by a preset length. The webs of the two beam bodies (21) that are spliced ​​are fixedly connected by the web joint (23). The flange joint (24) is set on the outer side of the upper and lower flanges at both ends of the beam body (21). The flange joints (24) at the ends of the two beam bodies (21) that are spliced ​​are fixedly connected by the connecting plate (25).

6. A steel frame structure with plug-in swing columns and an efficiency-enhancing self-resetting composite wall as described in claim 1, characterized in that, The cold-formed thin-walled steel composite wall (3) includes a cold-formed thin-walled steel frame (31), lightweight concrete (32), a panel (33), a reinforcing steel plate (34), a pre-embedded high-strength bolt (35), and a U-shaped steel plate (36); wherein the cold-formed thin-walled steel frame (31) is formed by connecting cold-formed thin-walled steel splicing columns (311), cross braces (312), and guide rails (313), the panel (33) is fixedly connected to both sides of the cold-formed thin-walled steel frame (31), and the lightweight concrete (32) is poured into the cold-formed thin-walled steel splicing column (311). Inside the column (311) and the cavity formed by the cold-formed thin-walled steel frame (31) and the two side panels (33), the reinforcing steel plate (34) is set inside the guide rail (313) and is fixedly connected to the web of the guide rail (313) by a pre-embedded high-strength screw (35). The U-shaped steel plate (36) is set outside the guide rail (313). The web of the U-shaped steel plate (36) is fixedly connected to the web of the guide rail (313) by a pre-embedded high-strength screw (35). The flange of the U-shaped steel plate (36) is fixedly connected to the panel (33).

7. A prefabrication method for a steel frame structure with plug-in swaying columns and an enhanced self-resetting composite wall as described in any one of claims 1-6, characterized in that, Includes the following steps: After cutting the main body (11) of the steel frame column according to the design length, the column stiffening rib (13) is welded along the column height and the end strengthening plate (12) is welded to both ends of the main body (11). Then, the ear plates (14) are welded in pairs to the outer flanges of both ends of the steel frame column (1) to complete the prefabrication of the steel frame column (1). After cutting the main body (21) of the steel frame beam according to the design length, weld the stiffening rib (22) along the beam length, weld the web plate joint (23) to the web plate at one end of the main body (21) of the steel frame beam, and reserve a certain extension length. At the same time, weld the flange joint (24) to the upper and lower flanges at both ends of the steel frame beam (2) to complete the prefabrication of the steel frame beam (2). After splicing multiple cold-formed thin-walled steel components to form a cold-formed thin-walled steel composite column (311), lightweight concrete (32) is poured into the cavity of the cold-formed thin-walled steel composite column (311) to complete the prefabrication of the cold-formed thin-walled steel composite column (311); then, several cold-formed thin-walled steel composite columns (311) are inserted into cold-formed thin-walled steel guide rails (313) at equal intervals, and several cross braces (312) are set between adjacent cold-formed thin-walled steel composite columns (311). The cold-formed thin-walled steel composite columns (311), cross braces (312) and guide rails (313) are then fixedly connected to form a cold-formed thin-walled steel frame (31); then One side of the cover panel (33) is fixedly connected to the cold-formed thin-walled steel frame (31), and the reinforcing steel plate (34) and the pre-embedded high-strength bolt (35) are installed in the design position. Then, lightweight concrete (32) is poured into the cavity formed by the cold-formed thin-walled steel frame (31) and the cover panel (33). Finally, after the lightweight concrete (32) reaches the design strength, the other side of the cover panel (33) is installed, and the pre-embedded high-strength bolt (35) is passed through the web of the U-shaped steel plate (36). At the same time, the flange of the U-shaped steel plate (36) is fixedly connected to the cover panel (33) to complete the prefabrication of the cold-formed thin-walled steel composite wall (3). Prefabricate several column shoes (411), L-shaped parts (421), sliders (431), clamps (432), double conical inner rings (4521), single conical intermediate rings (4522), double conical intermediate rings (4523), and double conical outer rings (4524) to complete the prefabrication of the friction damper (4).

8. An installation method for a steel frame structure with plug-in swing columns and an enhanced self-resetting composite wall, characterized in that, Includes the following steps: First, the prefabrication of the steel frame column (1), steel frame beam (2), cold-formed thin-walled steel composite wall (3) and friction damper (4) is completed according to the prefabrication method of the plug-in rocking column steel frame structure with enhanced self-resetting composite wall as described in claim 7. Then, the prefabricated components are installed on the construction site. The installation process is as follows: Install the first-floor steel frame column (1): After fixing the column shoe (411), pad (412) and friction material (44) to the ear plate (14) of the steel frame column (1) with ring spring bolts (45), install the reset steel plate (414) and high-strength tie rod (415), and install the friction material (44) and L-shaped piece (421) symmetrically on both sides of the web plate at both ends of the steel frame column (1) with ring spring bolts (45). Then, hoist the steel frame column (1) to the design position, and fix the column shoe (411) and L-shaped piece (421) to the foundation to complete the installation of the steel frame column (1). Install the first-floor steel frame beam (2): After installing the steel frame beam (2) in the designed position, fix the column shoe (411) and L-shaped piece (421) to the lower flange of the steel frame beam (2); then, at the joint of the steel frame beam (2), fix the web plate joint (23) to the web of the adjacent steel frame beam (2), and fix the adjacent flange joint (24) through the connecting plate (25) to complete the installation of the first-floor steel frame beam (2); Installation of the first-floor cold-formed thin-walled steel composite wall (3): After passing the pre-embedded high-strength screws (35) at the upper and lower ends of the cold-formed thin-walled steel composite wall (3) through the slider (431) and the clamp (432) and fixing them, the cold-formed thin-walled steel composite wall (3) is installed in the rectangular frame composed of steel frame columns (1) and steel frame beams (2), and the beam shoes (4312) at both ends of the slider (431) are fixedly connected to the foundation and the lower flange of the steel frame beam (2) to complete the installation of the first-floor cold-formed thin-walled steel composite wall (3); Install the remaining steel frame columns (1), steel frame beams (2) and cold-formed thin-walled steel composite walls (3) according to the above steps, and embed high-elastic material (6) in the gaps between the steel frame columns (1), steel frame beams (2) and cold-formed thin-walled steel composite walls (3) to complete the installation of the overall structure.

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