CN116180925A - An assembled self-resetting viscoelastic anti-seismic toughness improvement system and method - Google Patents

Abstract

The invention discloses an assembled self-resetting viscoelastic anti-seismic toughness improvement system and method, which includes an outsourcing steel plate assembly, a viscoelastic damper, a brace steel plate and three SMA self-resetting dampers; the viscoelastic damper passes through the outsourcing steel plate The component is connected with the beam or column, and the two ends of the SMA self-resetting damper are respectively hinged with the viscoelastic damper and the node steel plate; during a small earthquake, the SMA self-resetting damper and the viscoelastic damper are jointly deformed to absorb energy; during a large earthquake When the SMA self-resetting damper reaches the limit, it mainly relies on the shear deformation of the viscoelastic damper to absorb shock and energy consumption; the SMA material in the composite damper gives the device a certain self-resetting ability, changing the structural design from "ductility" to "Toughness", and all components are connected by assembly, which is conducive to the partial replacement of damaged components after the earthquake, and increases the design goal from "life safety" to "performance recovery".

Description

An assembled self-resetting viscoelastic anti-seismic toughness improvement system and method

technical field

The invention relates to the technical field of energy dissipation and shock absorption, in particular to an assembled self-resetting viscoelastic anti-seismic toughness improvement system and method.

Background technique

The frame structure has the advantages of flexible building layout, high space utilization rate and easy to meet the requirements of building use; the cast-in-place frame structure has relatively good structural rigidity and integrity, and the plasticity of concrete also enables the frame structure to be poured into different structures. The cross-sectional shape is used to meet the requirements of the building; the frame structure has been developed for a long time, and the construction technology is relatively mature. It is also the most numerous and widely used building structure in the current structure. However, the stress concentration at the joints of the frame structure is relatively obvious, and the lateral stiffness of the structure is small, so it is easy to produce large horizontal displacement under the action of earthquake, which will cause serious damage to the structure. Therefore, how to improve the energy-absorbing capacity of the beam-column joints of the concrete frame structure under earthquake action, the self-resetting energy-dissipating performance for multiple times, and the replaceability of the local damage of the shock-absorbing device are urgent problems to be solved.

The viscoelastic damper is a typical passive energy-dissipating shock-absorbing device. The viscoelastic material filled between the steel plates can produce shear hysteretic energy dissipation under earthquake action, thereby achieving the purpose of improving structural damping and reducing structural response. It has the advantages of simple structure, low cost and good shock absorption effect, and is widely used in the field of structural shock absorption. However, during the long-term service of the viscoelastic damper, due to repeated fatigue of the rubber, debonding may occur in the metal-rubber bonding layer, there may be pores or cracks inside the rubber, and different types of defects appear inside, resulting in failure.

Shape memory alloys (Shape Memory Alloys, SMA) are a new type of smart material with excellent properties such as shape memory effect, superelasticity, and high damping, which can meet the needs of new dampers for the ability to recover deformation. The SMA damper composed of SMA rods and movable steel plates provides a large degree of recovery performance for the device, and also provides "toughness" for the structure on the basis of shock absorption and energy consumption, greatly increasing the damping capacity. The service life of the vibration device. However, the self-resetting characteristics of SMA rods are obtained by sacrificing a certain degree of energy dissipation performance, which makes the SMA damper lose a certain degree of energy dissipation capability.

How to rationally arrange the SMA damper and the viscoelastic damper at the same node, so that the two dampers are coupled with each other, form a highly efficient device that coordinates with each other for shock absorption and energy consumption, and reduces the impact of earthquake damage on beam-column joints.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides an assembled self-resetting viscoelastic anti-seismic toughness improvement system and method. By working together with the beam body on the lower side of the concrete frame, the energy consumption and anti-seismic greatly reduce the impact of the earthquake on the beam. Destruction effects of column joints.

The present invention is achieved through the following technical solutions:

An assembled self-resetting viscoelastic anti-seismic toughness improvement system includes at least one set of anti-seismic toughening components, and the anti-seismic toughening components include an outsourcing steel plate component, a viscoelastic damper, a braced steel plate and three SMA self-resetting dampers;

One end of the two SMA self-resetting dampers is respectively connected to the two outer steel plate components through a viscoelastic damper, one end of the other SMA self-resetting damper is hinged to the brace steel plate, and the other ends of the three SMA self-resetting dampers are at the same node Hinged, the other end of the slanted steel plate is hinged with another outsourcing steel plate component, the two outsourcing steel plate components connected with the viscoelastic damper are covered on the adjacent upper beam and column, and the outsourcing steel plate connected with the slanted steel plate The steel plate components are installed on the lower beam body, and viscoelastic material blocks are filled between each outsourcing steel plate component and the beam column;

The SMA self-resetting damper includes an outer steel plate, an inner steel plate and an H-shaped slider plate;

Two chutes are arranged at intervals along the displacement direction on the inner steel plate, the H-shaped slider plate is arranged in the chute horizontally and can move along the chute, the outer steel plate and the two H-shaped slider plates are connected by SMA material, when the H When the type slider plate moves along the chute, the SMA material deforms to dissipate energy.

Preferably, two sets of anti-seismic toughening components are included and distributed symmetrically along the center of the beam column, and the brace steel plates of the two sets of anti-seismic toughening components are hinged to the same outer steel plate component.

Preferably, the viscoelastic damper includes a first connecting steel plate, a second connecting steel plate, a chute fixing steel plate and a sliding device;

The first connecting steel plate is fixed on the outer wall of the outer steel plate assembly, the second connecting steel plate is arranged in parallel on the outside of the first connecting steel plate, a viscoelastic material is bonded between the first connecting steel plate and the second connecting steel plate, and the two sliding The device is parallel and symmetrically arranged on both sides of the second connecting steel plate, and is arranged along the axial direction of the beam or column. One end of the chute fixing steel plate is crimped on the sliding device, and the other end is connected to the second connecting steel plate.

Preferably, the sliding device includes a ball chute and a plurality of linearly arranged balls embedded in it, the ball chute is fixed on the second connecting steel plate, and the chute fixing steel plate is crimped on the balls.

Preferably, the second connecting steel plate is provided with an X-shaped steel plate, and the center of the X-shaped steel plate is welded to the second hinge seat.

Preferably, a first node steel plate is arranged between the three SMA self-resetting dampers, and the ends of the three SMA self-resetting dampers are respectively connected to the first node steel plate in rotation, and the circumference of the first node steel plate is evenly distributed. shaft holes.

Preferably, the two sides of the inner steel plate are symmetrically provided with outer steel plates, the two ends of the H-shaped slider plate extend laterally from both sides of the chute, and the side of the outer steel plate close to the inner steel plate is provided with two fixing plates, two The fixed plates are respectively located on the side where the two H-shaped slider plates are close to each other. A plurality of SMA rods are located between the two fixed plates. The two ends of the SMA material pass through the fixed plate and the ends of the H-shaped slider plate and Nut connection.

Preferably, the two H-shaped slider plates respectively abut against the ends of the two slide grooves which are close to each other.

Preferably, the outer cladding steel plate assembly includes a hollow tube formed by sequentially assembling a plurality of steel plates end to end, the inner wall of each steel plate is provided with a groove for bonding a viscoelastic mat, and one side of the viscoelastic mat is bonded to the concave In the groove, the other side protrudes from the groove and covers the inner wall of each steel plate, and the viscoelastic pads of each steel plate are connected end to end to form a ring-shaped closed structure.

A method for improving the anti-seismic toughness of an assembled self-resetting viscoelastic system,

When the concrete frame structure is subjected to small earthquakes and wind vibrations, the SMA material of the SMA self-resetting damper undergoes tensile deformation to consume energy, and at the same time, the viscoelastic material in the viscoelastic damper undergoes shear deformation to absorb shock and consume energy;

When the concrete frame joints are subjected to a large earthquake, the SMA damper stretches and deforms to dissipate energy, and at the same time provides the self-resetting ability for the seismic system. The viscoelastic material in the viscoelastic damper undergoes shear deformation to dissipate energy and absorb vibration. The viscoelastic material blocks between the outsourcing steel plate components undergo compression and shear deformation to jointly perform energy dissipation and shock absorption, and the outsourcing steel plate components play a hoop effect on the beam and column.

Compared with the prior art, the present invention has the following beneficial technical effects:

An assembled self-resetting viscoelastic anti-seismic toughness improvement system provided by the present invention is connected to the beam-column of the concrete frame through a viscoelastic damper and a braced steel plate, while consuming the energy of the beam-column joints under an earthquake as much as possible, the Part of the energy is transmitted to the middle of the beam body on the next floor through the brace steel plate, and the device works together with the beam body on the lower side of the concrete frame to consume energy and resist earthquakes, which greatly reduces the damage effect of the earthquake on the beam-column joints and transfers the seismic energy In the beam-column area, the anti-seismic performance of the frame is enhanced, and the self-resetting performance of the nodes is also improved. The whole system has a good shock absorption effect in small earthquakes and large earthquakes. The self-resetting damper can provide a larger The elastic recovery ability ensures the post-earthquake repairability of the nodes, ensures the seismic design requirements of "strong nodes, weak components" and the "toughness" performance of the structure. In addition, because the structural device is assembled, any damage to a part can be Quickly restore to the set service performance through partial maintenance, and convenient on-site installation and replacement, which is conducive to industrial production, manufacturing and development.

Furthermore, when the concrete frame joints are subjected to small earthquakes and wind vibrations, the SMA dampers undergo tensile deformation to provide self-resetting capabilities, and the viscoelastic materials in the viscoelastic dampers undergo shear displacement deformation for shock absorption, thereby reducing the dynamic force of the frame joints response;

Furthermore, when the concrete frame joints are subjected to a large earthquake, the SMA rods are subjected to tensile deformation, but due to the limited length of the protective slot of the inner steel plate, the SMA damper can only elongate and dissipate energy within a certain range, ensuring that it does not The self-resetting capability limit will be exceeded. The viscoelastic material in the viscoelastic damper undergoes a large shear displacement deformation for energy dissipation and shock absorption, and the viscoelastic material wrapped around the beam column will also be subjected to extrusion or shear loads, thereby deforming and participating in energy dissipation.

Description of drawings

Fig. 1 is the structural front view of assembled self-resetting viscoelasticity-SMA anti-seismic system of the present invention;

Fig. 2 is a schematic diagram of beam-column joints of the assembled self-resetting viscoelasticity-SMA anti-seismic system of the present invention;

Fig. 3 is a partial front view of the lower beam body in Fig. 1;

Fig. 4 is a top view of the outsourcing steel plate assembly and the viscoelastic damper in Fig. 1;

Fig. 5 is an exploded view of the outsourcing steel plate assembly and the viscoelastic damper in Fig. 1;

Fig. 6 is a schematic diagram of the viscoelastic cushion material in the outsourcing steel plate assembly in Fig. 1;

Fig. 7 is a schematic diagram of the structure inside the outsourcing steel plate assembly in Fig. 1;

Fig. 8 is a schematic structural diagram of the SMA self-resetting damper in Fig. 1;

Fig. 9 is a front view of the SMA self-resetting damper in Fig. 1;

Fig. 10 is a structural schematic diagram of the beam-column outer-wrapped steel plate and the viscoelastic damper in Fig. 1;

Fig. 11 is a schematic structural view of the outer-wrapped steel plate assembly of the lower side beam column of the present invention in Fig. 1;

Fig. 12 is an exploded view of the beam-column outer cladding steel plate assembly and the viscoelastic damper in Fig. 1 .

In the figure: 1 viscoelastic damper, 2SMA self-resetting damper, 3 first node steel plate, 4 second node steel plate, 5 diagonal bracing steel plate, 6 first hinge seat, 7 outsourcing steel plate assembly, 8 viscoelastic cushion material, 9 Outer steel plate Ⅰ, 10 Outer steel plate II, 11 First connecting steel plate, 12 Viscoelastic material, 13 Second connecting steel plate, 14X type steel plate, 15 Second hinged seat, 16 Ball chute fixed steel plate, 17 Bolt pad, 18 Bolt , 19 nuts, 20 outer steel plates, 21H slider plates, 22SMA bars, 23 fixed nuts, 24 inner steel plates, 25 balls, 26 bolts, 27 outer steel plates Ⅲ, 28 outer steel plate Ⅳ, 29 ball chute.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.

Referring to Figure 1-12, an assembled self-resetting viscoelastic anti-seismic toughness improvement system includes two sets of symmetrically arranged anti-seismic toughening components, and the anti-seismic toughening components include an outsourcing steel plate component 7, a viscoelastic damper 1, and a brace Steel plate 5 and three SMA self-resetting dampers 2.

One end of the two SMA self-resetting dampers is respectively connected to an outsourcing steel plate assembly 7 through the viscoelastic damper 1, one end of the other SMA self-resetting damper 2 is hinged to the brace steel plate 5, and the other ends of the three SMA self-resetting dampers are One end is respectively hinged to the first connecting steel plate, the other end of the braced steel plate 5 is hinged to the outer steel plate assembly 7, and the three are covered on three continuous beams and columns, and viscoelastic material blocks are filled between the outer steel plate assembly 7 and the beams and columns.

Referring to Figures 8 and 9, the SMA self-resetting damper 2 absorbs energy by stretching the SMA bar, which includes an outer steel plate 20, an inner steel plate 24, an H-shaped slider plate 21 and an SMA bar 22;

Two outer steel plates are arranged symmetrically on both sides along the axial direction of the inner steel plate 24, and two chutes are arranged at intervals along the displacement direction on the inner steel plate 24, and the H-shaped slider plate 21 is horizontally arranged in the chute and can move along the The slot moves, and the two ends of the H-shaped slider plate 21 extend out of the chute respectively, and the two H-shaped slider plates 21 abut against the ends of the two chutes close to each other, and the side of the outer steel plate 20 close to the inner steel plate 24 is provided with Two fixed plates, the position of the fixed plate corresponds to the two H-shaped slider plates 21, and the two fixed plates are respectively located on the side where the two H-shaped slider plates are close to each other, and a plurality of SMA rods 22 are located on the two sides Between the fixed plates, the ends of the fixed plate and the H-shaped slider are provided with a reserved hole passing through the SMA bar 22, and the two ends of the SMA bar 22 pass through the ends of the fixed plate and the H-shaped slider plate in sequence. The nut 23 is connected, and the nut 23 is crimped on the end 21 of the H-shaped slider.

In this embodiment, a plurality of SMA rods 22 are arranged on both sides of the inner steel plate, and the SMA rods 22 on both sides are symmetrically arranged, and a scale mark is provided on the threaded end of the end of the SMA rod 22 for checking The size of the pre-tension force, the SMA rod 22 can also be replaced by SMA wire.

The ends of the two outer steel plates at one end of the SMA self-resetting damper 2 are connected by a rotating shaft, and the outer steel plates of the three SMA self-resetting dampers 2 are hinged to the first node steel plate 3 through a rotating shaft. In this embodiment, the first node steel plate 3 is a circular steel plate; the ends of the inner steel plates of the two SMA self-resetting dampers 2 are hinged to the viscoelastic damper 1, and the ends of the inner steel plates of the other SMA self-resetting damper 2 are rotatably connected to the second node steel plate 4, the second The two-node steel plate 4 is rotationally connected with one end of the diagonal brace steel plate 5 .

Referring to Figures 4-7, the outer cladding steel assembly 7 includes a rectangular hollow tube formed by assembling the cladding steel plates I9, 27 cladding steel plates III and two cladding steel plates II10. Groove, one side of the viscoelastic mat is bonded in the groove, the other side protrudes from the groove and covers the entire inner wall, the viscoelastic mat of each steel plate is connected end to end to form a ring closed structure, and the outer steel plate assembly is wrapped in the beam column , the viscoelastic pad is located between each steel plate and the corresponding side wall of the beam column.

In this embodiment, the outer cladding steel plate I9 and 27 outer cladding steel plate III have the same structure and are vertically arranged parallel to each other. The connecting plate, the two ends of the outer cladding steel plate II10 are bent to form a second connecting plate, the first connecting plate and the second connecting plate are parallel to each other and connected by bolts 18 and nuts, and the bolts 18 are also provided with bolt pads 17 .

Referring to Figures 10 and 12, the viscoelastic damper includes a first connecting steel plate 11, a second connecting steel plate 13, a chute fixing steel plate 16 and a ball chute 29, and the two sides of the first connecting steel plate 11 are respectively fixed by a plurality of bolts On the outer wall of the outer cladding steel plate III of the 27 outer cladding steel plate assembly 7, the second connecting steel plate 13 is arranged in parallel on the outside of the first connecting steel plate 11, and a viscoelastic material 12 is bonded between the first connecting steel plate 11 and the second connecting steel plate 13 , the viscoelastic material 12 is a sheet structure, and covers the side wall of the second connecting steel plate 13, the second connecting steel plate 13 is welded on the outer wall of the X-shaped steel plate 14, and the center of the X-shaped steel plate 14 is welded with the second hinge seat 15, two The ball chute 29 is parallel and symmetrically arranged on both sides of the second connecting steel plate 13. A plurality of balls are embedded in the ball chute 29. The ball chute 29 is arranged along the axial direction of the beam column. The cross section of the chute fixing steel plate 16 is C-shaped structure, the chute fixing steel plate 16 is arranged parallel to the ball chute 29, one end of the chute fixing steel plate 16 is crimped on the ball chute 29, and the other end is provided with a connecting plate, which is crimped on the ball chute 29 through a plurality of bolts 26. On the edge of the second connecting steel plate 13, a plurality of bolts 26 are arranged at intervals.

Referring to Figure 11, one end of the brace steel plate 5 is hinged to the end of the inner steel plate 24 of the SMA self-resetting damper through the second node steel plate 4, and the other end of the brace steel plate 5 is connected to the outer steel plate assembly 7 through the first hinge seat 6 , the first hinge seat 6 is welded in the center of the side wall of the outer cladding steel plate II.

The viscoelastic damper 1, the SMA self-resetting damper 2, the first connecting steel plate 3, the second connecting steel plate 4, the bracing steel plate 5 and the lower side beam body cladding steel plate components are all connected by bolt rods. The diameter of the rod can be set between 20 and 25 mm according to the situation. In order to ensure that the two ends of the SMA self-resetting damper 2 can rotate smoothly without hindering each other with the viscoelastic damper and the opposite SMA self-resetting damper on the braced steel plate, it should be Set the steel plates at both ends of the SMA self-resetting damper as circular arcs with a diameter of about 60mm. In order to ensure that the SMA bar 22 does not come into contact with the outer steel plate 20 during elongation and deformation, the outer steel plate of the SMA damper should be placed at the hinge point A variable cross-section is set at a certain distance, so that it will not hinder the operation of the device, nor will it reduce the connection strength of the hinge point; the fixing bolts on the outer steel plate assembly should be arranged at equal intervals to avoid excessive stress concentration.

The distance between the outer steel plate 20 and the inner steel plate 24 should be set between 30 mm and 40 mm as required, which not only facilitates the arrangement of the SMA bar 22 and the installation of the fixing nut 23, but also ensures that the inner and outer steel plates will not occur under working conditions. collision. The distance between the vertical plates on both sides of the H-shaped slider plate should be set between 24mm and 30mm as required, so as to ensure that the H-shaped slider plate and the inner steel plate 24 will not be damaged by friction when the SMA damper is working. The length of the inner steel plate chute should be designed according to 6%-8% of the length of the set SMA bar 22 to ensure the recoverability of the SMA bar 22 .

The following is a detailed description of the anti-seismic method of the assembled self-resetting viscoelastic anti-seismic toughness improvement system provided by the present invention.

Referring to Figures 1 and 2, the assembled self-resetting viscoelastic anti-seismic toughness improvement system includes two sets of anti-seismic toughening components, which are symmetrically installed on rectangular beams and columns. Each set of anti-seismic toughening components includes three outsourcing steel plate components 7, two One viscoelastic damper 1 and three SMA self-resetting dampers.

Before assembly, according to the design parameters, form and the characteristics of the load of the fabricated concrete frame joints, determine the size of the damping force required by the fabricated viscoelastic damper and the SMA self-resetting damper, and the strength of the viscoelastic material. Width and thickness, arrangement position and angle between dampers, by selecting the size of the viscoelastic material and the length of the SMA bar, different support damping forces can be achieved for nodes with different situations.

Two viscoelastic dampers 1 are respectively fixed on the side walls of two outsourcing steel plate assemblies 7, and the two outsourcing steel plate assemblies 7 are assembled on two adjacent beams and columns by bolts, that is to say, one of the outsourcing The steel plate assembly 7 is installed on the upper beam body, another outsourcing steel plate assembly 7 is installed on the adjacent column, and the distance between the two steel plate assemblies 7 and the connecting nodes of two adjacent beams and columns is equal, and the last outsourcing steel plate assembly Set at the center of the lower beam body.

There are multiple shaft holes evenly distributed on the upper circumference of the hinged steel plate of the first node. One end of the three SMA self-resetting dampers is hinged to the first node steel plate through the shaft holes, and the other ends of the two SMA self-resetting dampers are connected to the viscoelastic damper. The second hinged seat connection on the X-shaped steel plate can make the viscoelastic material receive the shear load evenly, and the two SMA self-resetting dampers are symmetrically distributed on both sides of the diagonal brace steel plate below, so that the two SMA self-resetting The shock absorption effect of the damper is equal, and the other end of the last SMA self-resetting damper is connected with one end of the slanting steel plate through the second node steel plate, and the other end of the slanting steel plate is connected with the first hinged seat on the outer steel plate of the lower beam body 6 connection, in this embodiment, the distribution of the two diagonally braced steel plates of the two groups of seismic toughening components is hinged with the outer cladding steel plate component of the lower beam.

When the concrete frame structure is subjected to small earthquakes and wind vibrations, the system transfers the dynamic load at the beam-column joints to each energy-dissipating shock-absorbing device, and transfers part of the load to the lower beam body, reducing the load at the beam-column joints. The load reduces its damage and realizes the anti-seismic requirements of "strong nodes, weak components". Among them, the SMA bar of the SMA self-resetting damper is stretched and deformed to consume energy, and the viscoelastic material in the viscoelastic damper is sheared The deformation is mainly for shock absorption and energy consumption, and the two work together to greatly reduce the dynamic response and residual deformation of the frame, and realize the improvement of the seismic toughness of the structure;

When the concrete frame joint is subjected to a large earthquake, the bar of the SMA self-resetting damper is stretched and deformed. In order to prevent the SMA bar 22 from exceeding the resettable deformation, the chute of the inner steel plate makes it stretch within a certain range. Long energy consumption, while dissipating energy, it provides the device with self-resetting ability, and also provides a certain guarantee for the recoverable performance of the device; the viscoelastic material in the viscoelastic damper undergoes a large shear displacement to reduce energy consumption. At the same time, the viscoelastic material cushion wrapped around the beam and column will undergo compression and shear deformation after receiving the force transmitted by the device, and jointly perform energy dissipation and shock absorption. The outsourcing steel plate component also has a certain hoop effect on the beam and column. The seismic performance of the beam and column is enhanced, thereby reducing the dynamic response of the frame structure and the deformation and damage of the frame joints, and improving the seismic toughness of the structure.

The prefabricated self-resetting viscoelastic seismic toughness improvement system is installed on the beams and columns of the upper nodes on both sides of the frame structure and on the beams of the next floor, and can also be arranged only on the beams of the upper nodes on one side of the frame. On the body, the column and the beam on the next floor, each device works together to form a self-resetting system for shock absorption and energy consumption, and the deformation together with the concrete frame absorbs a large amount of energy, which can greatly improve the seismic capacity of the joints and self-resetting system. In addition, the SMA self-resetting damper can provide a large elastic recovery stiffness during work, which improves the resettable performance of the frame joints and ensures the recoverability and easy repair of the concrete frame joints after the earthquake.

The above content is only to illustrate the technical ideas of the present invention, and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solutions according to the technical ideas proposed in the present invention shall fall within the scope of the claims of the present invention. within the scope of protection.

Claims (10)

1. An assembled self-resetting viscoelastic anti-seismic toughness promotion system is characterized in that it includes at least one group of anti-seismic toughening components, and the anti-seismic toughening components include an outsourcing steel plate component (7), a viscoelastic damper (1), Diagonal bracing steel plate (5) and three SMA self-resetting dampers (2); One end of the two SMA self-resetting dampers is respectively connected to the two outsourcing steel plate components (7) through the viscoelastic damper (1), and one end of the other SMA self-resetting damper (2) is hinged to the brace steel plate (5), The other ends of the three SMA self-resetting dampers are hinged to the node, the other end of the brace steel plate (5) is hinged to another outer steel plate assembly (7), and the two outer steel plate assemblies connected to the viscoelastic damper (1) are packaged Covering on the adjacent upper beam body and column body, the outsourcing steel plate assembly connected with the diagonal brace steel plate (5) is installed on the lower beam body, and the viscoelastic material block is filled between each outsourcing steel plate assembly (7) and the beam column body; The SMA self-resetting damper includes an outer steel plate (20), an inner steel plate (24) and an H-shaped slider plate (21); Two chutes are arranged at intervals along the displacement direction on the inner steel plate (24), and the H-shaped slider plate (21) is horizontally arranged in the chute and can move along the chute, and the outer steel plate (20) and the two H-shaped sliders The blocks (21) are connected by SMA material, and when the H-shaped slider plate (21) moves along the chute, the SMA material deforms to dissipate energy. 2. A kind of assembled self-resetting viscoelastic anti-seismic toughness improvement system according to claim 1, characterized in that, it comprises two groups of anti-seismic toughening components, and is symmetrically distributed along the center of the beam and column, and the diagonal of the two groups of anti-seismic toughening components The supporting steel plate (5) is hinged with the same outsourcing steel plate assembly (7). 3. A kind of assembled self-resetting viscoelastic anti-seismic toughness improvement system according to claim 1, characterized in that, the viscoelastic damper (1) comprises the viscoelastic damper comprising a first connecting steel plate (11) , the second connecting steel plate (13), the chute fixing steel plate (16) and the sliding device; The first connecting steel plate (11) is fixed on the outer wall of the outer cladding steel plate assembly (7), the second connecting steel plate (13) is arranged in parallel on the outside of the first connecting steel plate (11), the first connecting steel plate (11) and the second connecting steel plate (11) A viscoelastic material (12) is bonded between the two connecting steel plates (13), and two sliding devices are arranged parallel and symmetrically on both sides of the second connecting steel plate (13), and are arranged along the axial direction of the beam or column, One end of the chute fixed steel plate (16) is crimped on the slide device, and the other end is connected with the second connecting steel plate (13). 4. A kind of assembled self-resetting viscoelastic anti-seismic toughness improvement system according to claim 3, characterized in that, the sliding device comprises a ball slide groove (29), and a plurality of linear arrays embedded in it Ball, ball chute (29) is fixed on the second connection steel plate (13), and chute fixed steel plate (16) is crimped on the ball. 5. a kind of assembly type self-resetting viscoelastic anti-seismic toughness promotion system according to claim 3, is characterized in that, described second connection steel plate (13) is provided with X-shaped steel plate (14), X-shaped steel plate (14 ) center welds the second hinged seat (15). 6. A kind of assembled self-resetting viscoelastic anti-seismic toughness promotion system according to claim 1, characterized in that, a first node steel plate (3) is arranged between the three SMA self-resetting dampers, and three SMA The ends of the self-resetting damper are respectively rotatably connected to the first node steel plate (3), and a plurality of shaft holes are evenly distributed on the upper circumference of the first node steel plate (3). 7. A kind of assembly-type self-resetting viscoelasticity anti-seismic toughness promotion system according to claim 1, is characterized in that, the both sides of described inner steel plate (24) are provided with outer steel plate symmetrically, H-type slider plate (21) The two ends of the chute extend laterally from both sides of the chute, and the side of the outer steel plate (20) close to the inner steel plate (24) is provided with two fixing plates. On the side, a plurality of SMA rods (22) are located between two fixed plates, and the two ends of the SMA material pass through the fixed plates and the ends of the H-shaped slider plate in turn to connect with the nuts (23). 8 . The assembled self-resetting viscoelastic anti-seismic toughness improvement system according to claim 1 , wherein the two H-shaped slider plates respectively abut against the ends of the two slide grooves that are close to each other. 9 . 9. A kind of assembly-type self-resetting viscoelastic anti-seismic toughness improvement system according to claim 1, characterized in that, the outsourcing steel plate assembly (7) comprises a hollow tube assembled from the end to the end of a plurality of steel plates, each steel plate The inner wall is provided with a groove for bonding the viscoelastic mat. One side of the viscoelastic mat is bonded in the groove, and the other side protrudes from the groove and covers the inner wall of each steel plate. The viscoelastic mat of each steel plate is Connect and form a ring-shaped closed structure. 10. A method for an assembled self-resetting viscoelastic anti-seismic toughness promotion system according to any one of claims 1-9, characterized in that, When the concrete frame structure is subjected to small earthquakes and wind vibrations, the SMA material of the SMA self-resetting damper undergoes tensile deformation to consume energy, and at the same time, the viscoelastic material in the viscoelastic damper undergoes shear deformation to absorb shock and consume energy; When the concrete frame joints are subjected to a large earthquake, the SMA damper stretches and deforms to dissipate energy, and at the same time provides the self-resetting ability for the seismic system. The viscoelastic material in the viscoelastic damper undergoes shear deformation to dissipate energy and absorb vibration. The viscoelastic material blocks between the outsourcing steel plate components undergo compression and shear deformation to jointly perform energy dissipation and shock absorption, and the outsourcing steel plate components play a hoop effect on the beam and column.

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