Wall type Z-shaped metal torsion tube damper anti-seismic system and method

Abstract

The invention discloses a wall type Z-shaped metal torsion tube damper anti-seismic system and method. The wall type Z-shaped metal torsion tube damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a Z-shaped metal torsion tube damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the Z-shaped metal torsion tube dampers are arranged between the paired cantilever walls and connected with the cantilever walls so as to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the Z-shaped metal torsion tube damper is arranged to replace a traditional mild steel metal damper and a viscous damper to conduct damping design of a building structure, the problem that the low-cycle fatigue performance of the traditional metal damper is poor is solved, the oil leakage risk of the viscous damper is avoided, and the anti-seismic performance of the building structure is improved. Moreover, due to the structural design in the damper, the influence of the bending and shearing effect on the deformation of the torsion tube under the action of an axial load is eliminated, so that the section of the torsion tube is always kept a stable circular section in the hysteresis energy consumption period of the torsion tube, and the energy consumption efficiency is ensured.

Description

Technical Field

[0001] This invention relates to the field of building vibration reduction technology, and more specifically, to a wall-mounted Z-type metal torsion tube damper seismic system and method. Background Technology

[0002] Currently, the most widely used seismic design method in the engineering vibration reduction industry is to use viscous dampers and metal soft steel dampers to design structures for seismic resistance, in order to improve the seismic resistance of structures under extreme conditions such as earthquakes and wind loads.

[0003] Viscous dampers are velocity-dependent dampers that generate damping force through the flow of internal liquid between pistons, efficiently converting vibration energy into heat energy and significantly reducing the vibration response of structures. However, they suffer from a serious problem, a current pain point in the industry: the risk of leakage. Viscous dampers rely on their internal viscous fluid for operation; if the seal fails and leakage occurs, it will severely affect the damper's performance and safety. Furthermore, viscous dampers have complex structures and numerous components, leading to generally high costs. Traditional mild steel dampers, on the other hand, are displacement-dependent dampers, classified into bending and shear types based on their energy dissipation mechanisms. They dissipate energy and reduce vibration through the yielding plastic deformation of mild steel metal with a low yield point. Due to their simple structure and low cost, they are widely used in building seismic isolation and vibration reduction. However, they suffer from drawbacks such as high construction precision requirements, poor low-cycle fatigue performance, and low cumulative energy dissipation efficiency, limiting their application and promotion.

[0004] Therefore, there is an urgent need for a damper seismic system that can both solve the leakage risk of viscous dampers and improve the durability and energy dissipation efficiency of mild steel metal dampers. Summary of the Invention

[0005] This invention provides a wall-mounted Z-type metal torsion tube damper seismic system and method, which adopts an all-metal structure system, eliminating the risk of viscous fluid leakage. The durability of the damper is improved through the ingenious cooperation and operation between metal components, and the seismic energy is consumed through the torsional plastic deformation of the energy-dissipating torsion tube, thereby improving the seismic performance of the structure.

[0006] The technical solution adopted by the present invention to solve its technical problem is a wall-type Z-shaped metal torsion tube damper seismic system. The damper seismic system is set in the seismic building frame structure to dissipate energy and reduce vibration through the plastic deformation of the components. It includes: frame beams, frame columns, cantilever walls and Z-shaped metal torsion tube dampers.

[0007] The frame beams and frame columns are all connected to the building, the cantilever walls are connected to the frame beams, and the Z-shaped metal torsion tube dampers are arranged between pairs of cantilever walls and are all connected to the cantilever walls to dissipate the energy transmitted by the cantilever walls.

[0008] Preferably, the Z-type metal torsion tube damper includes a pair of connecting components and a torsion tube energy dissipation component. The pair of connecting components are respectively connected to the cantilever walls located on the upper and lower sides to transfer the energy of the cantilever walls. The two ends of the torsion tube energy dissipation component are respectively connected to the pair of connecting components to dissipate the energy transferred by the connecting components.

[0009] Preferably, the torsion tube energy dissipation assembly includes a pair of force-transmitting connectors, a pair of energy-dissipating torsion tubes, a pair of anti-torsion plates, and a pair of torsion tube sleeves.

[0010] The paired force-transmitting connectors are respectively connected to the paired connecting components. The paired anti-torsion plates are all connected to the paired force-transmitting connectors, and the paired anti-torsion plates are arranged on both sides of the force-transmitting connectors to clamp the force-transmitting connectors. The paired anti-torsion plates are provided with a pair of symmetrically distributed mounting holes. One end of the torsion tube sleeve is fixedly arranged on the anti-torsion plate, and the other end of the torsion tube sleeve is connected to the energy-dissipating torsion tube.

[0011] Preferably, the force-transmitting connector includes a force-transmitting plate and a connecting plate;

[0012] The connecting plate is fixedly connected to the force transmission plate, and the connecting plate is connected to the connecting assembly to transmit vibration energy. The force transmission plate is provided with a connecting hole of the same size as the mounting hole. The pair of anti-torsion plates are clamped on both sides of the force transmission plate. The energy-dissipating torsion tube is welded to the connecting hole, and both ends of the energy-dissipating torsion tube pass through the mounting hole and are connected to the other end of the torsion tube sleeve. The energy-dissipating torsion tube is sleeved inside the torsion tube sleeve.

[0013] Preferably, the energy-consuming pipe fitting includes a force transmission plate connection section, an energy-consuming section, and a twisted pipe end welding section;

[0014] The energy-consuming sections are symmetrically distributed in pairs on both sides of the force transmission plate connecting section, and each of the energy-consuming sections is provided with a twisted tube end welding section. The force transmission plate connecting section is fixedly connected to the connecting hole of the force transmission plate, and the twisted tube end welding section is fixedly connected to the twisted tube sleeve.

[0015] Preferably, the connecting assembly includes a rectangular connecting tube, a hinge plate, and a base ear plate;

[0016] An embedded steel plate is pre-installed on the cantilever wall, and the base ear plate is fixedly installed on the embedded steel plate. The other end of the base ear plate is hinged to the hinge plate, and the hinge plate is fixedly installed on one end of the rectangular connecting pipe. The other end of the rectangular connecting pipe is connected to the connecting plate.

[0017] This invention also provides a design method for a damper seismic resistance system, wherein the design method is used to design the above-mentioned wall-type Z-shaped metal torsion tube damper seismic resistance system, and the design method includes:

[0018] S1. Structural Design Stage: Based on the building's structure and seismic design requirements, the locations of frames with significant structural deformation within the building are determined through calculation and analysis. The seismic isolation and damping design module of the structural design software is used, and Z-type metal torsion tube dampers are selected for seismic design. The Z-type metal torsion tube dampers are placed at the selected frame locations, and their initial parameters are input. Through trial calculations and analysis using the seismic isolation and damping module, the structure is made to meet the seismic design code requirements. At this point, the yield load of the Z-type metal torsion tube damper is obtained. Yield displacement Ultimate load Limit displacement Damping ratio ;

[0019] S2, Shear stress of the energy-dissipating torsion tube section Based on the spatial structural design and geometric relationship of the Z-type metal torsion tube damper, an inter-story drift angle is generated under seismic loading. This drift angle is transmitted through the cantilever wall to the Z-type metal torsion tube damper. When the Z-type metal torsion tube damper is subjected to external forces... At that time, the shear stress of the cross section of the energy-dissipating torsion tube is calculated according to the pure torsion state of the energy-dissipating torsion tube. ,in The outer radius of the energy-dissipating torsion tube is... The inner radius of the energy-dissipating torsion tube is... The length of the energy-dissipating torsion tube support member. The angle between the center line connecting the paired energy-dissipating torsion tubes and the rectangular connecting tube;

[0020] S3, Yield load of Z-type metal torsion tube damper: Under axial load, the energy-dissipating torsion tube generates shear stress. Since the shear stress distribution of the thick-walled circular structure of the energy-dissipating torsion tube is consistent with the circular cross-section, and the shear stress at each point on the outer edge of the circular cross-section is tangent to the circumference, the shear stress at any point on the cross-section of the energy-dissipating torsion tube can be calculated based on geometric relationships. ,in Let be the static moment of the chord length passing through any point on the cross-section of the energy-dissipating torsion tube and the area enclosed by the outermost circular cross-section of the energy-dissipating torsion tube about the neutral axis. Let be the total length of the intersection between the chord length and the cross-section of the energy-dissipating torsion tube. At this point, the shear stress at any point on the cross-section of the energy-dissipating torsion tube is... ;

[0021] When the chord length approaches the neutral axis of the energy-dissipating torsion tube section infinitely. The maximum value will be obtained. That is, the shear stress reaches its maximum value at the neutral axis. When the shear stress on the outer surface of the energy-dissipating torsion tube reaches the yield stress of the energy-dissipating torsion tube... At that time, the Z-type metal torsion tube damper is subjected to an axial external force. That is, the yield load of the Z-type metal torsion tube damper. ,Right now ,at this time Therefore, we can obtain ,in The yield shear stress of the torsion tube material;

[0022] S4. Based on S1-S3, determine the outer radius of the energy-dissipating torsion tube. With inner radius The relationship, and to produce;

[0023] S5. The yield force of the Z-type metal torsion tube damper obtained from structural design calculations and seismic isolation analysis. Yield displacement The initial stiffness of the Z-type metal torsion tube damper is obtained as follows: ;

[0024] S6. Based on the initial stiffness of the Z-type metal torsion tube damper and its structural distribution, the torsional stiffness of the energy-dissipating torsion tube in the Z-type metal torsion tube damper... ,in These are the elastic modulus and Poisson's ratio of the energy-dissipating torsion tube, respectively. The length of the energy-consuming section of the energy-consuming torsion tube;

[0025] Axial stiffness of rectangular connecting pipe in bending , These are the equivalent elastic modulus and moment of inertia of the rectangular connecting pipe, respectively.

[0026] Axial stiffness of the expansion and contraction of the rectangular connecting pipe ,in The equivalent cross-sectional area of ​​the rectangular connecting pipe;

[0027] Axial stiffness of torsion plate under bending rotation ,in These are the elastic modulus and moment of inertia of the anti-torsion plate, respectively. The center distance between the paired mounting holes on the anti-torsion plate is the distance between the centers of the paired energy-dissipating torsion tubes.

[0028] S7. Assuming the Z-type metal torsion tube damper undergoes small deformation during vibration, the initial axial stiffness of the Z-type metal torsion tube damper... If we consider the stiffness of the energy-dissipating torsion tube, the rectangular connecting tube, and the anti-torsion plate to be connected in series, then...

[0029] ;

[0030] S8. Based on the axial initial stiffness of the Z-type metal torsion tube damper Determine the value of the energy-dissipating section length of the energy-dissipating torsion tube. ;

[0031] S9. Based on the determined parameters of the Z-type metal torsion tube damper, perform finite element modeling analysis and simulation to obtain the hysteresis energy dissipation curve of the Z-type metal torsion tube damper, and calculate the damping coefficient of the damper. Simultaneously, the mass of the Z-type metal torsion tube damper is extracted. and frequency Calculate the damper ratio ;

[0032] S10. The calculated damper ratio Damping ratio of the Z-type metal torsion tube damper described in the structural design phase In comparison, through parameter optimization and adjustment, the damper ratio error is controlled within 3% to meet the energy dissipation performance design requirements of the Z-type metal torsion tube damper.

[0033] Preferably, in step S2, The angle between the center line connecting the paired energy-dissipating twisted tubes and the rectangular connecting tube is... The initial value is .

[0034] Preferably, in step S3, the... The yield shear stress of the torsion tube material is obtained through material property tests of the energy-dissipating torsion tube.

[0035] Preferably, in step S8, the length of the energy-consuming section of the energy-consuming torsion tube is [length missing]. The thickness of the anti-torsion plate and the thickness of the force transmission plate are conventionally verified based on the ultimate load and ultimate displacement of the Z-type metal torsion tube damper obtained from the structural design stage calculation and analysis. The thickness of the anti-torsion plate and the thickness of the force transmission plate meet the corresponding strength and stiffness requirements.

[0036] The beneficial effects of this invention are as follows:

[0037] The present invention discloses a wall-mounted Z-type metal torsion tube damper seismic system and method, which adopts an all-metal structure system. This system avoids the leakage risk of traditional viscous dampers and improves the seismic performance of the building structure by uniformly consuming the energy of building vibration through the ingenious combination of metal structures.

[0038] Furthermore, the Z-type metal torsion tube damper, through the design and tight connection of the energy-dissipating torsion tube, force transmission plate, anti-torsion plate, and torsion tube sleeve, eliminates the influence of bending and shear effects on the deformation of the torsion tube under axial load. This ensures that the circular tube cross-section remains stable during the hysteretic energy dissipation period, guaranteeing energy dissipation efficiency and further improving the service life of the torsional energy dissipation damper. It also enhances the stability and vibration reduction performance of the wall-mounted Z-type metal torsion tube damper seismic system and method.

[0039] The flexible adjustment of parameters such as the inner and outer diameters of the torsion tubes and the center distance between the upper and lower torsion tubes allows the damping design of the main structure to independently design the damper yield load and yield displacement without being affected, so as to meet the differentiated needs of structural damping and facilitate construction personnel to adjust the construction according to the actual construction needs.

[0040] Furthermore, this seismic resistance system is designed based on the inter-story drift angle formed by the displacement between building floors under seismic loading. When the displacement exceeds the design yield displacement of the torsion tube damper, the torsion tube first enters the yielding stage, initiating plastic deformation to dissipate energy and reduce the damage of seismic energy to the main structure, thereby achieving the seismic resistance effect of the damper. This design method, by independently designing each component within the damper, allows for adjustments to the specifications of each component according to actual needs during the design process, greatly improving the design efficiency of the damping system. Moreover, the independent design of each component allows for the replacement of damaged parts during installation and use, avoiding the overall damping failure caused by component damage in traditional metal dampers, further extending the service life of the damping system. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the wall-mounted Z-type metal torsion tube damper seismic system of the present invention;

[0042] Figure 2 This is a schematic diagram of the energy-dissipating torsion tube structure of the wall-mounted Z-type metal torsion tube damper seismic system of the present invention;

[0043] Figure 3 This is a schematic diagram of the connection between the energy-dissipating torsion tube and the force transmission plate in the wall-mounted Z-type metal torsion tube damper seismic system of the present invention.

[0044] Figure 4 This is a schematic diagram of the connection between the anti-torsion plate and the torsion tube sleeve in the wall-mounted Z-type metal torsion tube damper seismic system of the present invention.

[0045] Figure 5 This is a schematic diagram of the connection between the anti-torsion plate and the force transmission connector of the wall-mounted Z-type metal torsion tube damper seismic system of the present invention.

[0046] Figure 6 This is a three-dimensional model diagram of the wall-mounted Z-type metal torsion tube damper seismic system of the present invention;

[0047] Figure 7 This is a test diagram of the hysteresis performance of the Z-type metal torsion tube damper of the present invention;

[0048] Figure 8 This is a hysteresis curve of the Z-type metal torsion tube damper of the present invention calculated by finite element method;

[0049] Figure 9 This is a flowchart illustrating the design method of the wall-mounted Z-type metal torsion tube damper seismic system and method of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Frame column; 2. Frame beam; 3. Cantilever wall; 31. Embedded steel plate; 4. Base ear plate; 5. Rectangular connecting pipe; 6. Force transmission plate; 61. Connecting hole;

[0052] 7. Energy-dissipating twisted pipe; 71. Force transmission plate connection section; 72. Energy-dissipating section; 73. Welded section at the end of the twisted pipe;

[0053] 8. Anti-torsion plate; 9. Torsion sleeve; 10. Hinge plate; 11. Connecting plate. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] Numerous specific details are set forth in the following description to enable those skilled in the art to fully understand the invention. However, the invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0056] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "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 the present 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 the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0058] like Figure 1 and Figure 6 As shown, a wall-mounted Z-type metal torsion tube damper seismic system is provided. The damper seismic system is installed within the seismic-resistant building frame structure to dissipate energy and reduce vibration through the plastic deformation of the components. The wall-mounted Z-type metal torsion tube damper seismic system includes: frame beam 2, frame column 1, cantilever wall 3 and Z-type metal torsion tube damper; frame beam 2 and frame column 1 are both connected to the building, cantilever wall 3 is connected to frame beam 2, and Z-type metal torsion tube damper is installed between pairs of cantilever walls 3 and is connected to cantilever wall 3 to dissipate the energy transmitted by cantilever wall 3.

[0059] In this embodiment, the seismic system of the wall-mounted Z-type metal torsion tube damper is achieved by placing the Z-type metal torsion tube damper between pairs of cantilever walls 3. This allows the vibration of the building to be transmitted to the Z-type metal torsion tube damper through the paired cantilever walls 3. The paired cantilever walls 3 are symmetrically arranged on the frame beams 2 at the upper and lower ends to ensure more uniform force transmission and avoid uneven tension and compression stress on the torsional energy-dissipating damper placed between the cantilever walls 3. The Z-type metal torsion tube damper adopts an all-metal structural system, eliminating the risk of leakage of viscous fluids. Through spatial design and optimization of the components, the damper's shape is made into a spatial Z-shape. Under seismic action, the core energy-dissipating element of the damper only undergoes torsion, generating reciprocating torsional deformation. The large torsional plastic deformation of the circular tube dissipates seismic energy, reducing the energy input of the earthquake to the main structure and improving the seismic performance of the structure. This system uses a Z-type metal torsion tube damper to replace the traditional soft steel metal damper and viscous damper for seismic design of building structures. It effectively solves the problem of poor low-cycle fatigue performance of traditional metal dampers, avoids the risk of oil leakage of viscous dampers, and improves the seismic performance of building structures.

[0060] See Figure 5 The Z-type metal torsion tube damper includes a pair of connecting components and a torsion tube energy dissipation component. The pair of connecting components are respectively connected to the cantilever walls 3 located on the upper and lower sides to transmit the energy of the cantilever walls 3. The two ends of the torsion tube energy dissipation component are respectively connected to the pair of connecting components to dissipate the energy transmitted by the connecting components. The torsion tube energy dissipation component includes a pair of force-transmitting connectors, a pair of energy-dissipating torsion tubes 7, a pair of anti-torsion plates 8, and a pair of torsion tube sleeves 9. The pair of force-transmitting connectors are respectively connected to the pair of connecting components. The pair of anti-torsion plates 8 are all connected to the pair of force-transmitting connectors and are arranged on both sides of the force-transmitting connectors to clamp the force-transmitting connectors. The pair of anti-torsion plates 8 are each provided with a pair of symmetrically distributed mounting holes. One end of the torsion tube sleeve 9 is fixedly set on the anti-torsion plate 8, and the other end of the torsion tube sleeve 9 is connected to the energy-dissipating torsion tube 7.

[0061] In this embodiment, the paired connecting components and the torsion tube energy dissipation components are preferably made of Q355 steel. The paired force transmission connectors, energy dissipation torsion tube 7, anti-torsion plate 8, and torsion tube sleeve 9 ensure that the energy dissipation torsion tube 7 has both energy dissipation performance and stable anti-torsion, further improving the stability of the energy dissipation torsion tube 7.

[0062] See Figure 3 and Figure 4 The force transmission connector includes a force transmission plate 6 and a connecting plate 11; the connecting plate 11 is fixedly connected to the force transmission plate 6, and the connecting plate 11 is connected to the connecting assembly to transmit the energy of vibration. The force transmission plate 6 is provided with a connecting hole 61 of the same size as the mounting hole. Pairs of anti-torsion plates 8 are clamped on both sides of the force transmission plate 6. The energy dissipation torsion tube 7 is welded to the connecting hole 61, and both ends of the energy dissipation torsion tube 7 pass through the mounting hole and are connected to the other end of the torsion tube sleeve 9. The energy dissipation torsion tube 7 is sleeved in the torsion tube sleeve 9.

[0063] In this embodiment, the force transmission plate 6 is preferably made of Q550 steel to transmit and bear the energy of building vibration, ensuring that the force transmission plate 6 has sufficient stiffness to resist seismic action and always operates in an elastic state, further ensuring the stability of the damper. The energy dissipation torsion tube 7, sleeved inside the torsion tube sleeve 9 and fixedly connected to the torsion tube sleeve 9, further eliminates the influence of bending and shear effects on the deformation of the torsion tube under axial load, ensuring that the circular tube cross-section remains stable during hysteretic energy dissipation, effectively improving energy dissipation efficiency.

[0064] like Figure 2As shown, the energy-consuming pipe fitting includes a force transmission plate connecting section 71, an energy-consuming section 72, and a twisted pipe end welding section 73. The energy-consuming sections 72 are symmetrically distributed in pairs on both sides of the force transmission plate connecting section 71, and each end of the energy-consuming section 72 is provided with a twisted pipe end welding section 73. The force transmission plate connecting section 71 is fixedly connected to the connecting hole 61 of the force transmission plate 6, and the twisted pipe end welding section 73 is fixedly connected to the twisted pipe sleeve 9.

[0065] In this embodiment, the energy dissipation sections 72, which are symmetrically distributed at both ends of the force transmission plate connection section 71, are arranged in a symmetrical manner so that the energy dissipation torsion tube 7 can not only have energy dissipation performance, but also ensure that the ultimate tensile and compressive forces of the energy dissipation torsion tube 7 are symmetrical. This avoids the loss and breakage caused by the asymmetrical tensile and compressive forces, and further improves the stability and energy dissipation performance of the energy dissipation torsion tube 7.

[0066] See Figure 1 and Figure 6 The connecting components include a rectangular connecting pipe 5, a hinge plate 10, and a base ear plate 4; a pre-embedded steel plate 31 is pre-installed on the cantilever wall 3, the base ear plate 4 is fixedly installed on the pre-embedded steel plate 31, the other end of the base ear plate 4 is hinged to the hinge plate 10, the hinge plate 10 is fixedly installed on one end of the rectangular connecting pipe 5, and the other end of the rectangular connecting pipe 5 is connected to the connecting plate 11.

[0067] like Figures 7-9 As shown, the present invention also provides a design method for a damper seismic resistance system. This method is used to design the aforementioned wall-mounted Z-type metal torsion tube damper seismic resistance system. The design method includes:

[0068] S1. Structural Design Stage: Based on the building's structure and seismic design requirements, the locations of frames with significant structural deformation within the building are determined through calculation and analysis. The seismic isolation and damping design module of the structural design software is used, and Z-type metal torsion tube dampers are selected for seismic design. The Z-type metal torsion tube dampers are placed at the selected frame locations, and their initial parameters are input. Through trial calculations and analysis using the seismic isolation and damping module, the structure is made to meet the seismic design code requirements. At this point, the yield load of the Z-type metal torsion tube damper is obtained. Yield displacement Ultimate load Limit displacement Damping ratio ;

[0069] In this step, the structural parameters of the Z-type metal torsion tube damper are initially calculated and analyzed according to the requirements of the seismic design code. Under the premise of ensuring that the Z-type metal torsion tube damper can fully meet the requirements of the seismic design code of the building, the Z-type metal torsion tube damper is further optimized and designed.

[0070] S2, shear stress at section 7 of the energy-dissipating torsion tube Based on the spatial structural design and geometric relationship of the Z-type metal torsion tube damper, an inter-story drift angle is generated under seismic loading. This drift angle is transmitted through the cantilever wall 3 to the Z-type metal torsion tube damper. When the Z-type metal torsion tube damper is subjected to external forces... At that time, the shear stress of the section of the energy-dissipating torsion tube 7 was calculated according to the pure torsion state. ,in The outer radius of the energy-dissipating torsion tube 7 is... The inner radius of the energy-dissipating torsion tube 7 is... The length of the support rod for the energy-dissipating torsion tube 7. The angle between the center line connecting the paired energy-consuming twisted tubes 7 and the rectangular connecting tube 5;

[0071] in, The angle between the center line connecting the paired energy-dissipating twisted tubes 7 and the rectangular connecting tube 5. The initial value is .

[0072] S3, Yield load of Z-type metal torsion tube damper: Under axial load, the energy dissipation torsion tube 7 generates shear stress. Since the shear stress distribution of the thick-walled circular structure of the energy-dissipating twist tube 7 is consistent with the circular cross-section, and the shear stress at each point on the outer edge of the circular cross-section is tangent to the circumference, the shear stress at any point on the cross-section of the energy-dissipating twist tube 7 can be calculated based on geometric relationships. ,in Let be the static moment of the chord length passing through any point on the cross-section of the energy-dissipating torsion tube 7 (the chord length passing through any point on the cross-section of the energy-dissipating torsion tube 7 and parallel to the central axis) and the area enclosed by the outermost circular cross-section of the energy-dissipating torsion tube 7 about the neutral axis. Let be the total length of the intersection between the chord length and the cross-section of the energy-dissipating torsion tube 7. At this point, the shear stress at any point on the cross-section of the energy-dissipating torsion tube 7 is: ;

[0073] When the chord length approaches the neutral axis of section 7 of the energy-dissipating torsion tube infinitely. The maximum value will be obtained. That is, the shear stress reaches its maximum value at the neutral axis. When the shear stress on the outer surface of the energy-dissipating torsion tube 7 reaches the yield stress of the energy-dissipating torsion tube 7 At that time, the axial external force on the Z-type metal torsion tube damper This refers to the yield load of the Z-type metal torsion tube damper. ,Right now ,at this time Therefore, we can obtain ,in The yield shear stress of the torsion tube material; where, The yield shear stress of the torsion tube material is obtained through material property tests of the energy-dissipating torsion tube 7.

[0074] S4. Based on S1-S3, determine the outer radius of the energy-dissipating torsion tube 7. With inner radius The relationship, and to produce;

[0075] S5. Yield force of the Z-type metal torsion tube damper obtained from structural design calculations and seismic isolation analysis. Yield displacement The initial stiffness of the Z-type metal torsion tube damper is obtained as follows: ;

[0076] S6. Based on the initial stiffness and structural distribution of the Z-type metal torsion tube damper, the torsional stiffness of the energy-dissipating torsion tube 7 in the Z-type metal torsion tube damper. ,in These are the elastic modulus and Poisson's ratio of the energy-dissipating torsion tube 7, respectively. The length of the energy-consuming section 72 of the energy-consuming torsion tube 7;

[0077] Axial stiffness of rectangular connecting pipe 5 in bending , These are the equivalent elastic modulus and moment of inertia of the rectangular connecting pipe 5, respectively.

[0078] Axial stiffness of rectangular connecting pipe 5 during expansion and contraction ,in This is the equivalent cross-sectional area of ​​the rectangular connecting pipe 5;

[0079] Axial stiffness of torsion plate 8 under bending rotation ,in These are the elastic modulus and moment of inertia of the anti-torsion plate 8, respectively. The center distance between the paired mounting holes on the anti-torsion plate 8 is the distance between the centers of the paired energy-dissipating torsion tubes 7.

[0080] S7. Assuming the Z-type metal torsion tube damper undergoes small deformation during vibration, what is the initial axial stiffness of the Z-type metal torsion tube damper? If we consider the stiffness of the energy-dissipating torsion pipe 7, the rectangular connecting pipe 5, and the anti-torsion plate 8 as being connected in series, then...

[0081] ;

[0082] S8. Based on the axial initial stiffness of the Z-type metal torsion tube damper Based on the results of step S6, the value of the length of the energy-dissipating section 72 of the energy-dissipating torsion tube 7 is determined. In this step, the axial initial stiffness of the Z-type metal torsion tube damper is used as a reference. This makes it compatible with the yield force of the Z-type metal torsion tube damper. Yield displacement The ratios between them are satisfied, thus the value of the length of the energy-consuming section 72 of the energy-consuming torsion tube 7 is calculated and determined. The thickness of the anti-torsion plate 8 and the force transmission plate 6 are verified by conventional calculation based on the ultimate load and ultimate displacement of the Z-type metal torsion tube damper obtained from the structural design stage. The thickness of the anti-torsion plate 8 and the force transmission plate 6 only need to meet the corresponding strength and stiffness requirements.

[0083] S9. Based on the determined parameters of the Z-type metal torsion tube damper, perform finite element modeling analysis and simulation to obtain the hysteresis energy dissipation curve of the Z-type metal torsion tube damper, and calculate the damping coefficient of the damper. Simultaneously extract the mass of the Z-type metal torsion tube damper. and frequency Calculate the damper ratio ;

[0084] S10. The calculated damper ratio Damping ratio compared to the Z-type metal torsion tube damper in the structural design phase In comparison, through parameter optimization and adjustment, the damper ratio error was controlled within 3% to meet the energy dissipation performance design requirements of the Z-type metal torsion tube damper.

[0085] In this embodiment, the wall-mounted Z-type metal torsion tube damper seismic system adopts all-metal components. It effectively solves the problems of poor durability and poor low-cycle fatigue performance of traditional viscous dampers and soft steel metal dampers by using the unique form of energy dissipation through the torsional deformation of the energy dissipation tube 7. A symmetrical cantilever wall 3 structure is set at the middle of the building frame structure. The wall-type Z-shaped metal torsion tube damper seismic system is installed between the upper and lower cantilever walls 3. Under the action of earthquake, the building floors will be displaced, forming an inter-story drift angle. The upper and lower cantilever walls 3 will be relatively displaced, which will act on the Z-shaped metal torsion tube damper. Under the action of external force, the Z-shaped metal torsion tube damper will move back and forth axially. When the displacement exceeds the design yield displacement of the Z-shaped metal torsion tube damper, the energy dissipation torsion tube 7 will first enter the yield stage and begin to produce plastic deformation to dissipate energy, so as to reduce the damage of earthquake energy to the main structure. During this process, the Z-shaped metal torsion tube damper continuously provides additional damping and additional stiffness to the building structure, so that the building structure has sufficient ability to resist earthquake action and reduce losses.

[0086] Furthermore, in this embodiment, the design of its energy dissipation section 72 is independent of other structures, which makes the design method of the wall-mounted Z-type metal torsion tube damper seismic system flexible and variable. Through the independent design of key parameters, the yield load and yield displacement can be adjusted to meet the structural vibration reduction design requirements and improve the vibration reduction design efficiency.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A seismic system using a wall-mounted Z-type metal torsion tube damper, wherein the damper seismic system is installed within a seismic-resistant building frame structure to dissipate energy and reduce vibration through the plastic deformation of the components, characterized in that... The wall-mounted Z-type metal torsion tube damper seismic system includes: frame beams, frame columns, cantilever walls, and Z-type metal torsion tube dampers; The frame beams and frame columns are all connected to the building, the cantilever walls are connected to the frame beams, and the Z-shaped metal torsion tube dampers are arranged between pairs of cantilever walls and are all connected to the cantilever walls to dissipate the energy transmitted by the cantilever walls.

2. The wall-mounted Z-type metal torsion tube damper seismic system according to claim 1, characterized in that, The Z-type metal torsion tube damper includes a pair of connecting components and a torsion tube energy dissipation component. The pair of connecting components are respectively connected to the cantilever walls located on the upper and lower sides to transfer the energy of the cantilever walls. The two ends of the torsion tube energy dissipation component are respectively connected to the pair of connecting components to dissipate the energy transferred by the connecting components.

3. The wall-mounted Z-type metal torsion tube damper seismic system according to claim 2, characterized in that, The torsion tube energy dissipation assembly includes a pair of force transmission connectors, a pair of energy dissipation torsion tubes, a pair of anti-torsion plates, and a pair of torsion tube sleeves. The paired force-transmitting connectors are respectively connected to the paired connecting components. The paired anti-torsion plates are all connected to the paired force-transmitting connectors, and the paired anti-torsion plates are arranged on both sides of the force-transmitting connectors to clamp the force-transmitting connectors. The paired anti-torsion plates are provided with a pair of symmetrically distributed mounting holes. One end of the torsion tube sleeve is fixedly arranged on the anti-torsion plate, and the other end of the torsion tube sleeve is connected to the energy-dissipating torsion tube.

4. The wall-mounted Z-type metal torsion tube damper seismic system and method according to claim 3, characterized in that, The force transmission connector includes a force transmission plate and a connecting plate; The connecting plate is fixedly connected to the force transmission plate, and the connecting plate is connected to the connecting assembly to transmit vibration energy. The force transmission plate is provided with a connecting hole of the same size as the mounting hole. The pair of anti-torsion plates are clamped on both sides of the force transmission plate. The energy-dissipating torsion tube is welded to the connecting hole, and both ends of the energy-dissipating torsion tube pass through the mounting hole and are connected to the other end of the torsion tube sleeve. The energy-dissipating torsion tube is sleeved inside the torsion tube sleeve.

5. The wall-mounted Z-type metal torsion tube damper seismic system and method according to claim 4, characterized in that, The energy-consuming pipe fitting includes a force transmission plate connection section, an energy-consuming section, and a twisted pipe end welding section; The energy-consuming sections are symmetrically distributed in pairs on both sides of the force transmission plate connecting section, and each of the energy-consuming sections is provided with a twisted tube end welding section. The force transmission plate connecting section is fixedly connected to the connecting hole of the force transmission plate, and the twisted tube end welding section is fixedly connected to the twisted tube sleeve.

6. The wall-mounted Z-type metal torsion tube damper seismic system according to claim 5, characterized in that, The connecting assembly includes a rectangular connecting tube, a hinge plate, and a base ear plate; An embedded steel plate is pre-installed on the cantilever wall, and the base ear plate is fixedly installed on the embedded steel plate. The other end of the base ear plate is hinged to the hinge plate, and the hinge plate is fixedly installed on one end of the rectangular connecting pipe. The other end of the rectangular connecting pipe is connected to the connecting plate.

7. A design method for a damper-based seismic resistance system, characterized in that, The design method for the damper seismic system is used to design the wall-mounted Z-type metal torsion tube damper seismic system according to any one of claims 1-6. The design method includes: S1. Structural Design Stage: Based on the building's structure and seismic design requirements, the locations of frames with significant structural deformation within the building are determined through calculation and analysis. The seismic isolation and damping design module of the structural design software is used, and Z-type metal torsion tube dampers are selected for seismic design. The Z-type metal torsion tube dampers are placed at the selected frame locations, and their initial parameters are input. Through trial calculations and analysis using the seismic isolation and damping module, the structure is made to meet the seismic design code requirements. At this point, the yield load of the Z-type metal torsion tube damper is obtained. Yield displacement Ultimate load Limit displacement Damping ratio ; S2, Shear stress of the energy-dissipating torsion tube section Based on the spatial structural design and geometric relationship of the Z-type metal torsion tube damper, an inter-story drift angle is generated under seismic loading. This drift angle is transmitted through the cantilever wall to the Z-type metal torsion tube damper. When the Z-type metal torsion tube damper is subjected to external forces... At that time, the shear stress of the cross section of the energy-dissipating torsion tube is calculated according to the pure torsion state of the energy-dissipating torsion tube. ,in The outer radius of the energy-dissipating torsion tube is... The inner radius of the energy-dissipating torsion tube is... The length of the energy-dissipating torsion tube support member. The angle between the center line connecting the paired energy-dissipating torsion tubes and the rectangular connecting tube; S3, Yield load of Z-type metal torsion tube damper: Under axial load, the energy-dissipating torsion tube generates shear stress. Since the shear stress distribution of the thick-walled circular structure of the energy-dissipating torsion tube is consistent with the circular cross-section, and the shear stress at each point on the outer edge of the circular cross-section is tangent to the circumference, the shear stress at any point on the cross-section of the energy-dissipating torsion tube can be calculated based on geometric relationships. ,in Let be the static moment of the chord length passing through any point on the cross-section of the energy-dissipating torsion tube and the area enclosed by the outermost circular cross-section of the energy-dissipating torsion tube about the neutral axis. Let be the total length of the intersection between the chord length and the cross-section of the energy-dissipating torsion tube. At this point, the shear stress at any point on the cross-section of the energy-dissipating torsion tube is... ; When the chord length approaches the neutral axis of the energy-dissipating torsion tube section infinitely. The maximum value will be obtained. That is, the shear stress reaches its maximum value at the neutral axis. When the shear stress on the outer surface of the energy-dissipating torsion tube reaches the yield stress of the energy-dissipating torsion tube... At that time, the Z-type metal torsion tube damper is subjected to an axial external force. That is, the yield load of the Z-type metal torsion tube damper. ,Right now ,at this time Therefore, we can obtain ,in The yield shear stress of the torsion tube material; S4. Based on S1-S3, determine the outer radius of the energy-dissipating torsion tube. With inner radius The relationship, and to produce; S5. The yield force of the Z-type metal torsion tube damper obtained from structural design calculations and seismic isolation analysis. Yield displacement The initial stiffness of the Z-type metal torsion tube damper is obtained as follows: ; S6. Based on the initial stiffness of the Z-type metal torsion tube damper and its structural distribution, the torsional stiffness of the energy-dissipating torsion tube in the Z-type metal torsion tube damper... ,in These are the elastic modulus and Poisson's ratio of the energy-dissipating torsion tube, respectively. The length of the energy-consuming section of the energy-consuming torsion tube; Axial stiffness of rectangular connecting pipe in bending , These are the equivalent elastic modulus and moment of inertia of the rectangular connecting pipe, respectively. Axial stiffness of the expansion and contraction of the rectangular connecting pipe ,in The equivalent cross-sectional area of ​​the rectangular connecting pipe; Axial stiffness of torsion plate under bending rotation ,in These are the elastic modulus and moment of inertia of the anti-torsion plate, respectively. The center distance between the paired mounting holes on the anti-torsion plate is the distance between the centers of the paired energy-dissipating torsion tubes. S7. Assuming the Z-type metal torsion tube damper undergoes small deformation during vibration, the initial axial stiffness of the Z-type metal torsion tube damper... If we consider the stiffness of the energy-dissipating torsion tube, the rectangular connecting tube, and the anti-torsion plate to be connected in series, then... ； S8. Based on the axial initial stiffness of the Z-type metal torsion tube damper Determine the value of the energy-dissipating section length of the energy-dissipating torsion tube. ; S9. Based on the determined parameters of the Z-type metal torsion tube damper, perform finite element modeling analysis and simulation to obtain the hysteresis energy dissipation curve of the Z-type metal torsion tube damper, and calculate the damping coefficient of the damper. Simultaneously, the mass of the Z-type metal torsion tube damper is extracted. and frequency Calculate the damper ratio ; S10. The calculated damper ratio Damping ratio of the Z-type metal torsion tube damper described in the structural design phase In comparison, through parameter optimization and adjustment, the damper ratio error is controlled within 3% to meet the energy dissipation performance design requirements of the Z-type metal torsion tube damper.

8. The design method of the damper seismic system according to claim 7, characterized in that, In step S2 The angle between the center line connecting the paired energy-dissipating twisted tubes and the rectangular connecting tube is... The initial value is .

9. The design method of the damper seismic system according to claim 7, characterized in that, In step S3, the The yield shear stress of the torsion tube material is obtained through material property tests of the energy-dissipating torsion tube.

10. The design method of the damper seismic system according to claim 7, characterized in that, In step S8, the length of the energy-consuming section of the energy-consuming torsion tube is... The thickness of the anti-torsion plate and the thickness of the force transmission plate are conventionally verified based on the ultimate load and ultimate displacement of the Z-type metal torsion tube damper obtained from the structural design stage calculation and analysis. The thickness of the anti-torsion plate and the thickness of the force transmission plate meet the corresponding strength and stiffness requirements.

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