A modular building steel structure unit with energy dissipation and shock absorption functions

Abstract

The application relates to a module building steel structure unit with energy dissipation and shock absorption functions and belongs to the technical field of building engineering. The module building steel structure unit comprises a main body steel frame, a surrounding structure, a spring viscous damper and a rotary friction damper; the main body steel frame comprises a stand column, a cross beam and a floor beam on the bottom surface; the surrounding structure is arranged in the main body steel frame and can move relative to the main body steel frame; the surrounding structure comprises a floor, a ceiling arranged above the floor and a plurality of wallboards connected between the floor and the ceiling; the plurality of wallboards are sequentially connected in a head-to-tail mode; and a wall corner part formed by two adjacent wallboards is arranged in one-to-one correspondence with the stand column; the spring viscous damper is connected between each stand column and the wall corner part corresponding to the stand column; and the rotary friction damper is connected between the floor and the floor beam. The module building steel structure unit has good shock absorption effect, and the installation of the spring viscous damper and the rotary friction damper does not affect the building outer wall.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a modular building steel structure unit with energy dissipation and vibration reduction functions. Background Technology

[0002] With the rapid development of my country's economy and society, the main direction of the domestic construction industry has shifted from "urban construction," which focuses on large-scale new building construction, to "urban renewal," which focuses on improving the safety, earthquake resistance, comfort, and energy efficiency of buildings. In "urban renewal," "demolition and reconstruction" is one of the mainstream directions, and construction speed is a crucial factor, affecting both economic benefits and the occupancy period of the original residents. Among existing building structural systems, modular construction is a highly industrialized building form, characterized by fast construction speed, green energy saving, standardized design, factory manufacturing, and assembly-line construction. It is applicable to various building types such as hotels, residences, schools, hospitals, and office buildings, playing a significant role in situations requiring rapid construction, such as urban renewal, public health emergencies, and disaster relief. While modular construction has many advantages, its structure, composed of steel structural units assembled into a whole, relies heavily on the connections between these units, resulting in a deficiency in the overall seismic performance of the structure.

[0003] Currently, improving the seismic performance of modular building structures mainly relies on two aspects: firstly, strengthening the stiffness of the connection nodes between steel structural units by developing new node structures to achieve rigid connections between steel structural units, thereby enhancing the overall integrity of the building structure; secondly, installing energy dissipation and vibration reduction components such as dampers in the main building structure to dissipate seismic energy and achieve vibration reduction under earthquake action. However, for the first technology, strengthening the stiffness and strength of nodes is a "seismic resistance" approach. At the structural system level, existing modular buildings only have connection nodes at the corners of steel structural units, and other parts between steel structural units are not connected. Therefore, strengthening the stiffness of nodes has a limited effect on improving the seismic performance of the structure. For the second technology, setting up damping devices is a "vibration reduction" approach, which has a more ideal effect. However, the installation of damping devices often occupies the exterior walls of the building, causing prominent problems such as obstructing the view and lighting, and affecting the use of the building.

[0004] Therefore, how to provide a modular building seismic resistance and damping technology with good shock absorption effect without affecting the building's exterior walls is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a modular building steel structure unit with energy dissipation and vibration reduction functions. Its main steel frame structure is completely separated from the enclosure structure, which is connected via a spring viscous damper and a rotating friction damper. Under seismic action, relative motion occurs between the main steel frame structure and the enclosure structure, stimulating the spring viscous damper and the rotating friction damper to dissipate energy while ensuring no collision between the main steel frame structure and the enclosure structure. This results in excellent vibration reduction performance, and the installation of the spring viscous damper and the rotating friction damper does not affect the building's exterior walls.

[0006] This invention provides a modular building steel structure unit with energy dissipation and vibration reduction functions, comprising: The main steel frame is prismatic in shape and includes at least four columns as side edges, multiple crossbeams connecting the top and bottom of two adjacent columns, and multiple floor beams located on the bottom surface, with the multiple floor beams connected between the multiple crossbeams located on the bottom surface. Enclosure structure, the enclosure structure has a prismatic shape consistent with the main steel frame, the enclosure structure is set inside the main steel frame and can move relative to the main steel frame within the main steel frame, the enclosure structure includes a floor, a ceiling correspondingly set above the floor and multiple wall panels connecting the floor and the ceiling, the multiple wall panels are connected end to end to form a prismatic shape, and the corner of the wall formed by two adjacent wall panels is set one-to-one with the column. A spring viscous damper is connected between each column and the corner of the wall corresponding to that column. Rotary friction damper, the rotary friction damper is connected between the floor and the floor beam; When the enclosure structure moves relative to the main steel frame, the enclosure structure causes the spring viscous damper to extend and retract, consuming energy, and causes the rotary friction damper to rub and consume energy.

[0007] In some embodiments, multiple spring viscous dampers are connected between each column and its corresponding corner, and the multiple spring viscous dampers are arranged at intervals from bottom to top along the column.

[0008] In some embodiments, the column comprises multiple column segments arranged sequentially from bottom to top, with adjacent column segments fixedly connected by a connecting partition. The connecting partition extends beyond the column segment on the side near the enclosure structure and is cantilevered. The wall panel is a concrete wall panel, and a wall panel connector is embedded in the corner formed by two adjacent wall panels. One end of the spring viscous damper is hinged to the cantilevered part of the connecting partition, and the other end is hinged to the wall panel connector.

[0009] In some embodiments, the wall panel connector includes an L-shaped connecting plate that fits against the outer side of the wall corner. The inner side of the L-shaped connecting plate is provided with a plurality of wall panel studs for pre-embedding in the wall panel, and the outer side of the L-shaped connecting plate is fixedly connected with an L-shaped connecting lug for hinged spring viscous damper.

[0010] In some embodiments, the spring viscous damper includes a cylinder with a damping cavity inside. One axial end of the cylinder is provided with a first connecting seat for hinged partition or wall panel connector. A piston is provided inside the damping cavity. The piston is connected to a piston rod. The piston rod extends out from the axial end of the cylinder away from the first connecting seat. The end of the piston rod away from the piston is provided with a second connecting seat for hinged wall panel connector or partition. A spring sleeved on the outside of the cylinder is connected between the first connecting seat and the second connecting seat.

[0011] In some embodiments, a support assembly is provided at the top of the floor beam. The support assembly includes a support base for supporting the floor and a connecting collar for connecting the floor. The support base forms a top-open mounting cavity, and the connecting collar is placed in and movable within the mounting cavity. A rotary friction damper is located in the mounting cavity and is connected between the outer wall of the connecting collar and the circumferential cavity wall of the mounting cavity. The floor is supported on the top of the support base, and a floor connector is pre-embedded at the bottom of the floor. The end of the floor connector away from the floor is inserted into the connecting collar.

[0012] In some embodiments, the rotary friction damper includes two sets of opposing first rotating assemblies, a second rotating assembly located between the two sets of first rotating assemblies, a pre-tightening connecting assembly for hinged connection of the first and second rotating assemblies, and friction pads sandwiched between the second rotating assembly and each set of first rotating assemblies; the first rotating assembly includes four connecting pieces forming a parallelogram, the second rotating assembly includes four rotating rings corresponding to the four corners of the parallelogram, and the pre-tightening connecting assembly includes four pre-tightening bolts corresponding to the four corners of the parallelogram, the pre-tightening bolts passing sequentially through adjacent sets of first rotating assemblies located at corresponding positions. Two connecting plates, a rotating ring located at a corresponding position to the pre-tightening bolt, and two adjacent connecting plates of another set of first rotating components located at a corresponding position to the pre-tightening bolt, so that the adjacent connecting plates of the two sets of first rotating components are hinged to each other and to the rotating ring at the corresponding position; each rotating ring has a friction pad on each side, and the side of the friction pad facing away from the rotating ring contacts the connecting plate of the first rotating component on the corresponding side to generate friction; the outer periphery of the two rotating rings located at the opposite corners of the parallelogram has a first connecting ear and a second connecting ear, and the first connecting ear and the second connecting ear are respectively connected to the outer wall of the connecting sleeve and the circumferential cavity wall of the mounting cavity.

[0013] In some embodiments, each support assembly has a plurality of rotary friction dampers in the mounting cavity of the support base, and the plurality of rotary friction dampers are evenly distributed circumferentially on the outer periphery of the connecting collar.

[0014] In some embodiments, the floor connector includes a floor connector plate that fits against the bottom surface of the floor, the top surface of the floor connector plate having a plurality of floor studs for pre-embedding in the floor, and the bottom surface of the floor connector plate having a connecting post for insertion into a connecting collar.

[0015] In some embodiments, multiple floor beams are intersected to form a mesh, with a support assembly at each intersection.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: 1. The modular steel structure unit with energy dissipation and vibration reduction function provided by the present invention has a main steel frame that is completely separated from the enclosure structure. The two are connected by a spring viscous damper and a rotary friction damper. During an earthquake, the main steel frame vibrates with the ground, while the enclosure structure remains relatively stable due to inertia. This causes the main steel frame to have a large relative motion with respect to the enclosure structure. At the same time, the two dampers are stimulated to dissipate energy in synergy, which fully realizes the dissipation of earthquake energy and has a strong energy dissipation and vibration reduction effect. It can reduce the vibration felt by people indoors to a large extent and avoid the impact of earthquake on indoor furniture and appliances. 2. The modular building steel structure unit with energy dissipation and vibration reduction function provided by the present invention has an enclosure structure located inside the main steel frame. Each column of the main steel frame is connected to a spring viscous damper between the corner of the enclosure structure, so that the enclosure structure is enclosed between the spring viscous dampers, which can ensure that the main steel frame and the enclosure structure do not collide during earthquake. 3. In the modular building steel structure unit with energy dissipation and vibration reduction function provided by the present invention, the spring viscous damper is installed between the columns of the main steel frame and the corner of the enclosure structure, while the rotational friction damper is installed between the floor of the enclosure structure and the floor beam of the main steel frame, so that the installation of the two dampers does not occupy the building exterior wall at all and does not affect the lighting and view. 4. The modular building steel structure unit with energy dissipation and vibration reduction function provided by the present invention can adjust the overall mass of the enclosure structure by adjusting the thickness of the wall panels, floor and ceiling in the enclosure structure. At the same time, by adjusting the damping and stiffness of the spring viscous damper and the rotary friction damper, the optimal control of the structural vibration response under seismic action can be achieved, so as to achieve the best energy dissipation and vibration reduction effect. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of a modular building steel structure unit with energy dissipation and vibration reduction functions provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a modular building steel structure unit with energy dissipation and vibration reduction function after removing the enclosure structure and spring viscous damper, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the enclosure structure in a modular building steel structure unit with energy dissipation and vibration reduction functions according to an embodiment of the present invention. Figure 4 for Figure 1 A magnified view of a section at point A in the middle; Figure 5 for Figure 2 A magnified view of a section at point B in the middle; Figure 6 This is a structural schematic diagram of the wall panel connector in a modular building steel structure unit with energy dissipation and vibration reduction function according to an embodiment of the present invention; Figure 7 An exploded view of a spring viscous damper in a modular building steel structure unit with energy dissipation and vibration reduction functions, provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the support assembly and the rotary friction damper in a modular building steel structure unit with energy dissipation and vibration reduction function according to an embodiment of the present invention. Figure 9 An exploded view of a rotating friction damper in a modular building steel structure unit with energy dissipation and vibration reduction functions, provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the floor connection plate in a modular building steel structure unit with energy dissipation and vibration reduction functions, provided in an embodiment of the present invention.

[0018] In the picture: 1. Main steel frame; 2. Enclosure structure; 3. Spring viscous damper; 4. Rotary friction damper; 5. Support assembly; 11. Column; 111. Column segment; 112. Connecting partition; 12. Horizontal beam; 13. Floor beam; 21. Floor; 211. Floor connector; 2111. Floor connector plate; 2112. Connecting post; 2113. Floor stud; 22. Wall panel; 221. Wall panel connector; 2211. L-shaped connecting plate; 2212. L-shaped connecting lug; 2213. Wall panel stud; 23. Ceiling; 31. Cylinder block; 311. First connecting seat; 32. Piston; 33. Piston rod; 331. Second connecting seat; 34. Spring; 35. Hinge pin; 41. First rotating assembly; 411. Connecting piece; 42. Second rotating assembly; 421. Rotating ring; 422. First connecting lug; 423. Second connecting lug; 43. Friction pad; 44. Preload bolt; 441. Preload screw; 442. Preload nut; 51. Support base; 52. Connecting collar; a. First through hole; b. Second through hole; c. Damping cavity; d. Mounting cavity. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] As attached Figures 1-10As shown, in an illustrative embodiment of the modular steel structure unit with energy dissipation and vibration reduction function of the present invention, the modular steel structure unit with energy dissipation and vibration reduction function includes a main steel frame 1, an enclosure structure 2, a spring viscous damper 3, and a rotational friction damper 4; the main steel frame 1 is prismatic in shape, and includes at least four columns 11 as side edges, multiple horizontal beams 12 connecting the top and bottom ends of two adjacent columns 11, and multiple floor beams 13 located on the bottom surface, the multiple floor beams 13 being connected between the multiple horizontal beams 12 located on the bottom surface; the enclosure structure 2 has a prismatic shape consistent with the main steel frame 1, and the enclosure structure 2 is disposed inside the main steel frame 1 and can be connected to the main steel frame 1. The enclosure structure 2 moves relative to the main steel frame 1 within the steel frame 1. The enclosure structure 2 includes a floor 21, a ceiling 23 correspondingly disposed above the floor 21, and multiple wall panels 22 connecting the floor 21 and the ceiling 23. The multiple wall panels 22 are connected end to end to form a prism shape. The corner of the wall formed by two adjacent wall panels 22 is correspondingly disposed with the column 11. A spring viscous damper 3 is connected between each column 11 and the corner of the wall corresponding to that column 11. A rotary friction damper 4 is connected between the floor 21 and the floor beam 13. When the enclosure structure 2 moves relative to the main steel frame 1, the enclosure structure 2 drives the spring viscous damper 3 to extend and retract to dissipate energy, and drives the rotary friction damper 4 to dissipate energy through friction.

[0024] The aforementioned modular steel structure unit with energy dissipation and vibration reduction functions has a main steel frame 1 completely separated from the enclosure structure 2. The two are connected by spring-viscous dampers 3 and rotational friction dampers 4. During an earthquake, the main steel frame 1 vibrates with the ground, while the enclosure structure 2 remains relatively stable due to inertia. This results in significant relative motion between the main steel frame 1 and the enclosure structure 2, simultaneously stimulating the two dampers to work together to dissipate energy, effectively dissipating seismic energy and providing strong energy dissipation and vibration reduction effects. This significantly reduces the tremors felt by people inside the building and prevents indoor furniture and appliances from being affected by the earthquake. Furthermore, the enclosure structure 2 of this modular steel structure unit with energy dissipation and vibration reduction functions is located within the main steel frame 1. Each column 11 of the main steel frame 1 is connected to a spring-viscous damper 3 at the corner of the enclosure structure 2, ensuring that the enclosure structure 2 is enclosed within the spring-viscous dampers 3 and preventing collision between the main steel frame 1 and the enclosure structure 2 during an earthquake. Furthermore, in the aforementioned modular steel structure unit with energy dissipation and vibration reduction functions, the spring viscous damper 3 is installed between the columns 11 of the main steel frame 1 and the corner of the enclosure structure 2, while the rotary friction damper 4 is installed between the floor 21 of the enclosure structure 2 and the floor beam 13 of the main steel frame 1. This ensures that the installation of both dampers does not occupy the building's exterior walls and does not affect lighting or views. In addition, the aforementioned modular steel structure unit with energy dissipation and vibration reduction functions can adjust the overall mass of the enclosure structure 2 by adjusting the thickness of the wall panels 22, floor 21, and ceiling 23. At the same time, by adjusting the damping and stiffness of the spring viscous damper 3 and the rotary friction damper 4, optimal control of the structural vibration response under seismic loading can be achieved, resulting in the best energy dissipation and vibration reduction effect.

[0025] like Figure 1 As shown, each column 11 is connected to its corresponding corner by multiple spring-viscous dampers 3, which are spaced apart along the column 11 from bottom to top. This arrangement of spring-viscous dampers 3 allows for comprehensive restraint of the relative displacement between the main steel frame 1 and the enclosure structure 2, ensuring that they do not collide during an earthquake. Simultaneously, the synchronized response of multiple spring-viscous dampers 3 dissipates seismic energy based on the force differences at different locations on the column 11, forming a uniform damping and protection system and significantly improving energy dissipation and vibration reduction effects.

[0026] like Figure 4 and Figure 5As shown, the column 11 includes multiple column segments 111 arranged sequentially from bottom to top. Adjacent column segments 111 are fixedly connected by connecting partitions 112. The connecting partitions 112 extend to the outside of the column segments 111 on the side near the enclosure structure 2 and are cantilevered. The wall panel 22 is a concrete wall panel 22. A wall panel connector 221 is embedded in the corner formed by two adjacent wall panels 22. One end of the spring viscous damper 3 is hinged to the cantilevered part of the connecting partition 112, and the other end is hinged to the wall panel connector 221. In this embodiment, one end of the spring viscous damper 3 is hinged to the connecting partition 112, which is integrally formed with the column 11, and the other end is hinged to the wall panel connector 221 embedded in the corner of the enclosure structure 2. This ensures that the spring viscous damper 3 is firmly connected to the column 11 and the enclosure structure 2, preventing the spring viscous damper 3 from detaching from the column 11 or the enclosure structure 2 under seismic action, thus preventing the damping effect of the spring viscous damper 3 from failing. It should be noted that the column segment 111 can be a square steel pipe, and the connecting partition 112 can be a square steel plate with an area larger than the cross-sectional area of ​​the square steel pipe. The square steel pipe and the square steel plate are connected by welding. During welding, the two adjacent sides of the square steel plate are aligned with the two edges of the square steel pipe facing the outside of the main steel frame 1, thereby forming a cantilevered arrangement of the connecting partition 112 relative to the column segment 111.

[0027] like Figure 6 As shown, the wall panel connector 221 includes an L-shaped connecting plate 2211 that fits against the outer side of the wall corner. The inner side of the L-shaped connecting plate 2211 is provided with several wall panel studs 2213 for pre-embedding in the wall panel 22. The outer side of the L-shaped connecting plate 2211 is fixedly connected to an L-shaped connecting lug 2212 for hinged connection with the spring-loaded viscous damper 3. With the above-described structure, the wall panel connector 221 fits against the wall corner via the L-shaped connecting plate 2211, and is pre-embedded in the wall panel 22 via the wall panel studs 2213, ensuring a firm connection between the wall panel connector 221 and the wall panel 22. The L-shaped connecting lug 2212 enables hinged connection with the spring-loaded viscous damper 3.

[0028] like Figure 7As shown, the spring viscous damper 3 includes a cylinder 31 with a damping cavity c inside. One axial end of the cylinder 31 is provided with a first connecting seat 311 for hinged connection of partition or wall panel connector 221. A piston 32 is provided in the damping cavity c. The piston 32 is connected to a piston rod 33. The piston rod 33 passes through the axial end of the cylinder 31 away from the first connecting seat 311. The end of the piston rod 33 away from the piston 32 is provided with a second connecting seat 331 for hinged connection of wall panel connector 221 or partition. A spring 34 sleeved on the outside of the cylinder 31 is connected between the first connecting seat 311 and the second connecting seat 331. The spring-viscous damper 3 described above generates damping through the movement of the piston 32 within the damping chamber c of the cylinder 31. Simultaneously, the movement of the piston 32 causes the piston rod 33 to extend and retract relative to the cylinder 31, resulting in relative displacement between the first connecting seat 311 and the second connecting seat 331. This, in turn, causes the spring 34, which is fitted around the cylinder 31, to extend and retract. The spring 34 not only assists the piston 32 in resetting but also dissipates additional energy, improving the damping effect. Specifically, as shown... Figure 4 As shown, in this embodiment, the first connecting seat 311 is hinged to the wall panel connector 221, and the second connecting seat 331 is hinged to the connecting partition 112. It should be noted that, as... Figures 4-6 As shown, the connecting partition 112 has a first through hole a at the corner opposite to the wall corner, and the L-shaped connecting ear plate 2212 has a second through hole b at the corner opposite to the wall corner. The second connecting seat 331 and the first connecting seat 311 are hinged to the connecting partition 112 and the L-shaped connecting ear plate 2212 respectively through hinge pins 35 passing through the first through hole a and the second through hole b. It should also be noted that, as Figure 5 As shown, the corner of the first through hole a in the connecting partition 112 is rounded to avoid obstructing the rotation of the second connecting seat 331 relative to the connecting partition 112; Figure 6 As shown, the corner of the L-shaped connecting ear plate 2212 with the second through hole b is also rounded to avoid hindering the rotation of the first connecting seat 311 relative to the L-shaped connecting ear plate 2212.

[0029] like Figure 2 , Figure 3 and Figure 8As shown, a support assembly 5 is provided at the top of the floor beam 13. The support assembly 5 includes a support base 51 for supporting the floor 21 and a connecting collar 52 for connecting the floor 21. The support base 51 forms an open mounting cavity d. The connecting collar 52 is placed in the mounting cavity d and is movable within the mounting cavity d. The rotary friction damper 4 is located in the mounting cavity d and is connected between the outer wall of the connecting collar 52 and the circumferential cavity wall of the mounting cavity d. The floor 21 is supported on the top of the support base 51. A floor connector 211 is pre-embedded at the bottom of the floor 21. The end of the floor connector 211 away from the floor 21 is inserted into the connecting collar 52. In this embodiment, the support base 51 can stably support the enclosure structure 2. When the enclosure structure 2 and the main steel frame 1 have relative displacement, the floor 21 drives the connecting collar 52 to move within the mounting cavity d through the floor connector 211, so that the rotary friction damper 4 generates rotary friction. It should be noted that in this embodiment, the mounting cavity d is a cylindrical cavity, and the connecting collar 52 is a circular ring.

[0030] like Figure 9As shown, the rotary friction damper 4 includes two sets of opposing first rotating components 41, a second rotating component 42 located between the two sets of first rotating components 41, a pre-tightening connection assembly for hinged connection of the first rotating components 41 and the second rotating components 42, and a friction pad 43 sandwiched between the second rotating component 42 and each set of first rotating components 41. The first rotating component 41 includes four connecting pieces 411 forming a parallelogram, the second rotating component 42 includes four rotating rings 421 corresponding to the four corners of the parallelogram, and the pre-tightening connection assembly includes four pre-tightening bolts 44 corresponding to the four corners of the parallelogram. The pre-tightening bolts 44 pass sequentially through two adjacent connecting pieces 411 of a set of first rotating components 41 located at corresponding positions, and the pre-tightening bolts 44 pass through the pre-tightening bolts 421. The bolt 44 is located at the corresponding position of the rotating ring 421 and the two adjacent connecting pieces 411 of another set of first rotating components 41 located at the corresponding position of the pre-tightening bolt 44, so that the adjacent connecting pieces 411 of the two sets of first rotating components 41 are hinged to each other and to the rotating ring 421 at the corresponding position; each rotating ring 421 is provided with a friction pad 43 on both sides, and the side of the friction pad 43 away from the rotating ring 421 contacts the connecting piece 411 of the first rotating component 41 on the corresponding side to generate friction; the outer periphery of the two rotating rings 421 located at the opposite corner of the parallelogram has a first connecting ear 422 and a second connecting ear 423, respectively, and the first connecting ear 422 and the second connecting ear 423 are respectively connected to the outer wall of the connecting sleeve 52 and the circumferential cavity wall of the mounting cavity d. The rotary friction damper 4 described above is mounted between the support base 51 and the connecting collar 52 via the first connecting lug 422 and the second connecting lug 423 of the rotating ring 421. Furthermore, its first rotating component 41 forms a variable parallelogram structure. When the connecting collar 52 moves within the mounting cavity d, the two sets of first rotating components 41 can deform to accommodate the multi-directional relative displacement between the connecting collar 52 and the mounting cavity d. Simultaneously, when the first rotating component 41 deforms, the connecting piece 411 can generate friction with the friction pad 43, achieving frictional energy dissipation. It should be noted that the preload bolt 44 includes a preload screw 441 and a preload nut 442 threadedly connected to the preload screw 441.

[0031] like Figure 8 As shown, each support assembly 5 has multiple rotary friction dampers 4 in the mounting cavity d of the support base 51. The multiple rotary friction dampers 4 are evenly distributed circumferentially on the outer periphery of the connecting collar 52. This arrangement of rotary friction dampers 4 can achieve all-round constraint on the connecting collar 52, thereby achieving all-round energy dissipation.

[0032] like Figure 10As shown, the floor connector 211 includes a floor connector plate 2111 that adheres to the bottom surface of the floor 21. The top surface of the floor connector plate 2111 is provided with several floor studs 2113 for pre-embedding in the floor 21. The bottom surface of the floor connector plate 2111 is fixedly connected with a connecting post 2112 for insertion into the connecting collar 52. The floor connector 211 with the above structure adheres to the bottom surface of the floor 21 through the floor connector plate 2111 and is pre-embedded in the floor 21 through the floor studs 2113, ensuring a firm connection between the floor connector 211 and the floor 21 of the enclosure structure 2. The connecting post 2112 is inserted into the connecting collar 52, facilitating the assembly of the enclosure structure 2 along with the floor connector plate 2111 onto the support assembly 5.

[0033] like Figure 2 As shown, multiple floor beams 13 are interconnected to form a mesh, and a support assembly 5 is provided at each intersection. By setting the support assembly 5 at each intersection, the load of the floor 21 is ensured to be evenly distributed.

[0034] In addition, it should be noted that the specific assembly process of the above-mentioned modular building steel structure unit with energy dissipation and vibration reduction functions is as follows: (1) Assembly of the main steel frame 1 The column segments 111 and connecting partitions 112 are welded in sequence to form columns 11. Crossbeams 12 are welded between the top and bottom of two adjacent columns 11. A mesh-like floor beam 13 is welded between the crossbeams 12 at the bottom to obtain the main steel frame 1. (2) Installation of support assembly 5 and rotary friction damper 4 Two sets of first rotating components 41, second rotating components 42, friction pads 43, and pre-tightening connecting components are assembled to form a rotary friction damper 4. The first connecting ear 422 of the assembled rotary friction damper 4 is welded to the outer periphery of the connecting collar 52. The connecting collar 52 with the rotary friction damper 4 is placed into the mounting cavity d of the support base 51. The second connecting ear 423 of the rotary friction damper 4 is welded to the circumferential cavity wall of the mounting cavity d of the support base 51. The assembly of the rotary friction damper 4 and the support assembly 5 is completed. The support assembly 5 with the rotary friction damper 4 is installed one by one at the intersection of the mesh floor beam 13. (3) Assembly of enclosure structure 2 Multiple concrete wall panels 22 are prefabricated as a single unit, while the ceiling 23 and floor 21 are prefabricated separately. When prefabricating the wall panels 22, wall panel connectors 221 are embedded at the corners of the walls. When prefabricating the floor 21, floor connectors 211 are embedded at the corresponding positions of the floor 21. The floor connectors 211 embedded in the floor 21 are installed one by one on the support components 5 of the main steel frame 1. Then, the prefabricated wall panels 22 are installed on the floor 21. Finally, the prefabricated ceiling 23 is installed on top of the wall panels 22 to complete the assembly of the enclosure structure 2. (4) Assembly of spring viscous damper 3 The first connecting seat 311 and the second connecting seat 331 of the spring viscous damper 3 are connected to the L-shaped connecting ear plate 2212 of the wall panel connector 221 and the connecting partition plate 112 of the column 11 respectively through the hinge pin 35, thus completing the installation of the modular building steel structure unit.

[0035] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A modular building steel structure unit with energy dissipation and vibration reduction functions, characterized in that, include: The main steel frame is prismatic in shape and includes at least four columns as side edges, multiple crossbeams connecting the top and bottom of two adjacent columns, and multiple floor beams located on the bottom surface, with the multiple floor beams connected between the multiple crossbeams located on the bottom surface. An enclosure structure having a prismatic shape consistent with the main steel frame, the enclosure structure being disposed inside the main steel frame and movable relative to the main steel frame within the main steel frame, the enclosure structure including a floor, a ceiling correspondingly disposed above the floor, and multiple wall panels connecting the floor and the ceiling, the multiple wall panels being sequentially connected end to end to form a prismatic shape, and the corner portion formed by two adjacent wall panels being disposed one-to-one with the column; A spring-viscous damper is connected between each of the columns and the corner portion corresponding to that column; A rotary friction damper, wherein the rotary friction damper is connected between the floor and the floor beam; When the enclosure structure moves relative to the main steel frame, the enclosure structure causes the spring viscous damper to extend and retract, consuming energy, and causes the rotary friction damper to rub and consume energy.

2. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 1, characterized in that, The spring viscous damper connecting each column and its corresponding corner is a plurality of such dampers, which are arranged at intervals from bottom to top along the column.

3. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 2, characterized in that, The column comprises multiple column segments arranged sequentially from bottom to top. Adjacent column segments are fixedly connected by a connecting partition. The connecting partition extends beyond the column segment on the side closest to the enclosure structure and is cantilevered. The wall panel is a concrete wall panel, and a wall panel connector is pre-embedded at the corner formed by two adjacent wall panels. One end of the spring viscous damper is hinged to the cantilevered portion of the connecting partition, and the other end is hinged to the wall panel connector.

4. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 3, characterized in that, The wall panel connector includes an L-shaped connecting plate that fits onto the outer side of the wall corner. The inner side of the L-shaped connecting plate is provided with a plurality of wall panel studs for pre-embedding in the wall panel. The outer side of the L-shaped connecting plate is fixedly connected with an L-shaped connecting lug for hinged to the spring viscous damper.

5. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 3, characterized in that, The spring viscous damper includes a cylinder with a damping cavity inside. One axial end of the cylinder is provided with a first connecting seat for hinged connection to the partition or the wall panel connector. A piston is provided inside the damping cavity. The piston is connected to a piston rod. The piston rod extends out from the axial end of the cylinder away from the first connecting seat. The end of the piston rod away from the piston is provided with a second connecting seat for hinged connection to the wall panel connector or the partition. A spring sleeved on the outside of the cylinder is connected between the first connecting seat and the second connecting seat.

6. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 1, characterized in that, The floor beam is provided with a support assembly at its top. The support assembly includes a support base for supporting the floor and a connecting collar for connecting the floor. The support base forms an open mounting cavity at its top. The connecting collar is placed in the mounting cavity and is movable within the mounting cavity. The rotary friction damper is located in the mounting cavity and is connected between the outer wall of the connecting collar and the circumferential cavity wall of the mounting cavity. The floor is supported on the top of the support base. A floor connector is pre-embedded at the bottom of the floor. The end of the floor connector away from the floor is inserted into the connecting collar.

7. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 6, characterized in that, The rotary friction damper includes two sets of opposing first rotating assemblies, a second rotating assembly located between the two sets of first rotating assemblies, a pre-tightening connecting assembly for hinged connection between the first rotating assembly and the second rotating assembly, and a friction pad sandwiched between the second rotating assembly and each set of first rotating assemblies. The first rotating assembly includes four connecting pieces forming a parallelogram, the second rotating assembly includes four rotating rings corresponding to the four corners of the parallelogram, and the pre-tightening connecting assembly includes four pre-tightening bolts corresponding to the four corners of the parallelogram. Each pre-tightening bolt passes sequentially through two adjacent connecting pieces of a set of first rotating assemblies located at a corresponding position, and the pre-tightening connecting assembly... The rotating ring with the pre-tightening bolt at the corresponding position and the two adjacent connecting pieces of another set of the first rotating components at the corresponding position are hinged to each other and to the rotating ring at the corresponding position; each rotating ring has a friction pad on both sides, and the side of the friction pad away from the rotating ring contacts the connecting piece of the first rotating component on the corresponding side to generate friction; the outer periphery of the two rotating rings located at the diagonal of the parallelogram has a first connecting ear and a second connecting ear, and the first connecting ear and the second connecting ear are respectively connected to the outer wall of the connecting sleeve and the circumferential cavity wall of the mounting cavity.

8. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 6 or 7, characterized in that, Each of the support assemblies has a plurality of rotary friction dampers in the mounting cavity of the support seat, and the plurality of rotary friction dampers are evenly distributed circumferentially on the outer periphery of the connecting collar.

9. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 6, characterized in that, The floor connector includes a floor connector plate that fits against the bottom surface of the floor. The top surface of the floor connector plate is provided with a plurality of floor studs for pre-embedding in the floor. The bottom surface of the floor connector plate is fixedly connected with a connecting post for insertion into the connecting collar.

10. The modular building steel structure unit with energy dissipation and vibration reduction function according to claim 6, characterized in that, The floor beams are intersected and connected to form a mesh, and the support assembly is provided at each intersection point.

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