CN216197019U - Column capital arch self-resetting energy dissipation vibration isolation device with replaceable viscoelastic damper - Google Patents

Abstract

The utility model discloses a column head cornice arch self-resetting energy dissipation and vibration isolation device with a replaceable viscoelastic damper, which comprises a damper, cornice purlin and a cornice beam, wherein a rectangular through groove is formed in the surface of the cornice beam, the damper is arranged in the rectangular through groove, and a pair of cornice purlin is connected with the damper; the damper is overlapped with the damping body through the damping and vibration isolation device, and the damping body is reset in the opposite direction when the cornice purlin is subjected to horizontal displacement in the face width direction; when the cornice is loaded in the vertical direction, the shock absorption and isolation device realizes shock absorption and isolation. According to the bucket arch energy dissipation device, the energy dissipation characteristic of the viscoelastic material, the self-resetting characteristic of the SMA plate and the shock absorption and isolation characteristic of the shock absorption and isolation spring are fully utilized, the residual deformation of the bucket arch is reduced, and the energy dissipation capability and the shock resistance of the bucket arch are greatly enhanced. When the columniform arch is subjected to earthquake action, the self-resetting, energy-consuming and seismic isolation and reduction effects of the device are fully exerted through the super-elasticity and self-resetting characteristics of the SMA nickel-titanium alloy plate and the shearing hysteresis effect between the viscoelastic material layers.

Description

Self-resetting energy-dissipating vibration isolation device for Stigma Dougong with replaceable viscoelastic dampers

technical field

The utility model relates to the technical field of energy consumption and shock absorption of ancient building wooden structure rabbits and building structures, in particular to a self-resetting energy consumption and vibration isolation device of a stigma family with a replaceable viscoelastic damper.

Background technique

Chinese ancient buildings are famous in the history of world architecture for their ingenious structural forms and various artistic shapes. Dougong is a kind of node form with the most distinctive features in ancient Chinese wooden structures, and its structure and mechanical performance are more complicated. The bucket has the functions of transmitting load, shock absorption and energy consumption and beautiful decoration.

As the node connecting the roof truss and the wooden column, the stigma is an important load-bearing and force-transmitting component. Under the action of the earthquake, the stigma dougong bears most of the load transfer and energy dissipation. However, due to the combined influence of multiple factors such as time and environment, the existing stigma dougongs generally have different degrees of damage. For example, the overall The damage forms such as skew flashing, tilting, and eccentricity affect the seismic performance of the wooden structure.

The traditional reinforcement method of bucket buckets is mainly to use flat steel or other alloy materials at limited positions such as big buckets, flat buckets and bucket buckets. Although the seismic performance of bucket buckets is improved to a certain extent, the size of bucket buckets is small. , the reinforcement method is complicated to operate, and it is easy to cause damage to the component itself. At the same time, the flat steel reinforces the dougong components, which changes the appearance of the dougong and the status quo of cultural relics, and violates the reinforcement principle of ancient buildings.

At present, shock absorption and vibration isolation is a popular field of engineering structure earthquake resistance. The shock absorption system changes the dynamic response of the structure through the energy-consuming shock absorption device, so that the vibration response of the structure is significantly attenuated, which effectively protects the safety of the structure in strong earthquakes and improves the safety of the structure. Seismic performance of the structure. Among them, viscoelastic dampers are widely used in engineering practice. They mainly consume seismic energy through the shear hysteresis properties of materials. The actual reinforcement is easy to operate and has strong applicability.

In view of this, it is necessary to propose a self-resetting energy-dissipating vibration isolation device for stigma with replaceable viscoelastic dampers, which can improve the efficiency of the overhanging eaves without changing the principle of "repairing the old as the old" of the ancient building structure. Seismic performance.

Utility model content

In order to solve the above-mentioned defects and deficiencies of the prior art, the purpose of the present utility model is to provide a self-resetting energy-consuming vibration isolation device for a stigma bucket with a replaceable viscoelastic damper. The utility model makes full use of the energy dissipation characteristics of viscoelastic materials, the self-reset characteristics of SMA plates and the vibration reduction and isolation characteristics of shock-absorbing and vibration-isolating springs, so as to reduce the residual deformation of the bucket and greatly enhance the energy-dissipation ability of the bucket. and seismic performance.

The purpose of this utility model is to realize through following technical scheme:

The utility model provides a self-resetting energy-dissipating vibration isolation device for a stigma bucket with a replaceable viscoelastic damper, which comprises a damper, an overhang and a peach-point beam. The surface of the peach-point beam is provided with a rectangular through groove, and the damper Placed in a rectangular through slot, a pair of overhangs are connected to the damper;

The damper is superimposed with the damping body through the shock absorption and vibration isolation device. When the overhang is subjected to horizontal displacement in the width direction of the surface, the damping body is reset in the opposite direction; when the overhang is loaded in the vertical direction, the shock absorption isolator Vibration device to achieve vibration isolation.

As a preferred solution, the damper includes an outer steel plate, a damping body, a damper box and a shock-absorbing and vibration-isolating device; the shock-absorbing and vibration-isolating device is installed in the damper box, and the damping body is installed below the shock-absorbing and vibration-isolating device. The outer steel plate is fastened with the damper box body, and the damper box body extends from both sides of the damper body to be connected with a pair of overhanging eaves.

As a preferred solution, the damper box is a frame-shaped structure, one side is open, two side walls are provided with through grooves, the upper and lower edges of the through groove are provided with rollers, and the inner walls of the two side walls are provided with positioning slots; The groove of the vibration isolator.

As a preferred solution, the damping body includes an SMA self-resetting plate, a lower steel plate, an upper steel plate and a viscoelastic layer, the viscoelastic layers are respectively connected to the upper and lower surfaces of the SMA self-resetting plate, and the upper and lower steel plates are respectively arranged above and below the viscoelastic layer. surface.

As a preferred solution, the end plates of the upper steel plate and the lower steel plate are clamped in the positioning grooves on the inner walls of the two side walls of the damper box.

As a preferred solution, the SMA self-reset plate is made of nickel-titanium alloy material; the viscoelastic layer is formed by bonding a second viscoelastic layer between two upper and lower first viscoelastic layers.

As a preferred solution, the upper steel plate is provided with reserved holes; the two ends of the SMA self-resetting plate are provided with bolt holes.

As a preferred solution, the shock-absorbing and vibration-isolating device includes a rectangular cover plate, two sets of shock-absorbing and vibration-isolating springs, and a trapezoidal frame cylinder.

As a preferred solution, the shock absorption and vibration isolation springs in the shock absorption and vibration isolation device pass through the reserved holes in the bottom and upper steel plates of the shock absorption and vibration isolation device, and are connected to the first viscoelastic layer.

As a preferred solution, a pair of overhangs are provided with installation grooves, the SMA self-resetting plate is inserted into the installation grooves, and the self-tapping screws penetrate the mounting grooves and the bolt holes of the SMA self-resetting plate to connect the pair of overhangs to the damping body. .

The device of the utility model can ensure that under the action of earthquake, the viscoelastic damper in the device can give full play to the superelasticity and different viscoelastic properties of the SMA self-resetting plate under the action of the seismic wave along the width direction of the stigma. The shear hysteresis energy dissipation performance between the layers realizes the self-reset and energy dissipation of the overhangs and reduces the deformation of the buckets. At the same time, the shock-absorbing and vibration-isolating spring in the damper has the functions of shock-absorbing and energy-dissipating, which enhances the anti-seismic performance of the bucket. The device is easy to install and has strong applicability, which can effectively prevent the deformation of the overhangs and fangs in actual earthquakes, and improve the seismic performance of the bucket joints.

To sum up, the utility model has the following advantages:

1. The structure of the device is simple, the box structure is mainly connected by steel plate welding, and the device is bonded with the peach tip beam and the overhang by epoxy resin, the welding and bonding operation is simple, the strength is high, and the stability is good. The outer steel plate and the box are connected by positioning pins and hexagon socket bolts, which not only reduces the slight deformation caused by the welding local stress at the joint between the outer steel plate and the box, but also has the advantages of convenient replacement, simple installation and reliable connection during maintenance and reinforcement. Features.

2. The reinforcement position of the device is located at the connection position between the overhang and the peach-point beam, which can effectively reduce the dislocation between the overhang and the peach-point beam under the action of the earthquake. At the same time, the reinforcement device is close to the roof, and the device is not prone to corrosion and aging. Longer service life.

3. The device makes full use of the buffering and force transmission properties of the shock-absorbing vibration isolation spring, the shear hysteresis performance of the viscoelastic damper, and the self-resetting performance of the SMA sheet, which effectively improves the seismic performance and service life of the bucket. It greatly reduces the possibility of earthquake damage such as tenon pulling, staggering, and crooked flashing on the Dougong layer.

4. The performance of the device is stable, and the shock absorption and vibration isolation device is always in a preloaded state under the pressure transmitted by the overhang girder and the superstructure. In addition, under different earthquakes, the device has a high degree of self-adaptation. Under the action of small earthquakes, the entire reinforcement node is in an elastic state, while under the action of moderate earthquakes and large earthquakes, the SMA self-resetting plate is driven by the larger earthquake response. The intensitic transformation and the dislocation of the viscoelastic material layer make the shear hysteresis energy dissipation effect obvious; after the external force is eliminated, the self-resetting effect of the SMA plate is obvious, and the residual deformation is small.

5. The device is concealed and conforms to the repair and reinforcement principles of "not changing the original appearance of cultural relics" and "repairing the old as old" for the wooden structure of ancient buildings. The materials are easily available, the cost is low, and it has high applicability.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present utility model and constitute a part of this application, and do not constitute an improper limitation to the present utility model. In the accompanying drawings:

Fig. 1 is the reinforcement position diagram of the stigma in the embodiment of the utility model;

Fig. 2 is the connection diagram of the reinforcement device and the overhanging eaves in the embodiment of the present utility model;

3 is an exploded view of an embodiment of the present utility model;

4 is an exploded view of a damping body in an embodiment of the present utility model;

Fig. 5 is the damper box body diagram of the embodiment of the utility model;

Fig. 6 is the outer steel plate diagram of the embodiment of the utility model;

7 is a diagram of a shock-absorbing and vibration-isolating device according to an embodiment of the present utility model;

FIG. 8 is a connection diagram of a damper and an overhanging beam according to an embodiment of the present invention.

The meaning of each symbol in the figure: 1- Damper, 2- Outer steel plate, 2-1- Positioning hole, 2-2- Hexagon socket head bolt, 3- Damping body, 3-1- SMA self-resetting plate, 3-2- Lower part Steel plate, 3-3-upper steel plate, 3-4-first viscoelastic layer, 3-5-second viscoelastic layer, 4-damper box, 4-1-positioning pin, 4-2-lower damping body Positioning slot, 4-3- Upper damping body positioning slot, 4-4- Roller, 4-5- Damper box groove, 5- Shock absorption and vibration isolation device, 5-1- Rectangular cover, 5-2- shock-absorbing vibration isolation spring, 5-3- trapezoidal frame tube, 6- overhanging eaves, 7- self-tapping screws, 8- peach-point beam, 9- peach-point beam rectangular channel.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model, but are not intended to limit the present utility model.

Figures 1 and 2 show a schematic diagram of a self-resetting energy-dissipating vibration isolation device for a stigma bucket with replaceable viscoelastic dampers, including a peach-point beam 8, an overhang 6 and a damper 1, and the surface of the peach-point beam 8 A peach-point beam rectangular through groove 9 is opened at the connection with the overhang 6, and the damper 1 is bonded in the peach-point beam rectangular through groove 9 through epoxy resin. FIG. 3 is a composition diagram of the damper 1 , including an outer steel plate 2 , a damping body 3 , a damper box 4 and a shock-absorbing and vibration-isolating device 5 . First, the damping body 3 is fixed to the damper box 4 through the lower damping body positioning slot 4-2 and the upper damping body positioning slot 4-3, and then the shock absorption and vibration isolation device 5 is passed through the damper box groove 4-5. It is fixed with the damper box 4, and finally the outer steel plate 2 is assembled with the damper box 4 to form the damper 1 through the positioning hole 2-1 and the inner hexagon bolt 2-1. A peach-point beam rectangular through groove 9 is opened at the connection position of the peach-point beam 8 and the overhang 6, and the damper 1 is bonded to the inner wall of the peach-point beam rectangular through-groove 9 through epoxy resin, and the damping body 3 is self-tapping through self-tapping. Screw 7 and epoxy resin are connected to the overhang 6.

FIG. 4 shows an exploded view of the damping body in the embodiment of the present invention. The damping body 3 includes an SMA self-resetting plate 3-1, a lower steel plate 3-2, an upper steel plate 3-3 and a viscoelastic layer. The upper steel plate 3-3 is provided with a circular slot for placing the shock-absorbing and vibration-isolating spring 5-2.

As shown in FIG. 4 , the viscoelastic layers are respectively connected to the upper and lower surfaces of the SMA self-resetting plate 3-1, and the upper steel plate 3-3 and the lower steel plate 3-2 are respectively arranged on the upper and lower surfaces of the viscoelastic layer. The viscoelastic layer is composed of a second viscoelastic layer 3-5 bonded between two upper and lower first viscoelastic layers 3-4.

Among them, the SMA self-resetting plate 3-1 is made of nickel-titanium alloy material, with a total length of 308mm-397mm, a width of 35mm-70mm, and a thickness of 5mm-10mm; the end plate of the SMA self-resetting plate 3-1 is a T-shaped structure, consisting of two short steel plates Consists of a long steel plate. The long steel plate is 80mm-100mm in length, 35mm-70mm in width, and 5mm-10mm in thickness, and the short steel plate is 30mm-50mm in length, 35mm-70mm in width, and 5mm-10mm in thickness. 10mm, bolt hole spacing 30mm-45mm, self-tapping screw 7 is 80mm-100mm long. The first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 are high damping viscoelastic materials, 120mm-160mm in length, 40mm-60mm in width, and 5mm-10mm in thickness; the upper steel plate 3-3 and the lower steel plate 3- 2. Both ends are provided with positioning small steel plates, respectively corresponding to the lower damping body positioning slot 4-3 and the upper damping body positioning slot 4-2, for fixing the damping body 3. The upper surface of the upper steel plate 3-3 is provided with a spring slot for fixing the shock-absorbing and vibration-isolating spring 5-2. The upper steel plate 3-3 and the lower steel plate 3-2 are made of Q235 or Q345 steel, with a length of 200mm-240mm, a width of 40mm-60mm, and a thickness of 5mm-10mm; the positioning small steel plate is 35mm-80mm in length, 10mm-25mm in height, and 2mm-4mm in thickness. The upper leaf spring slot is 2mm-6mm deep. In one embodiment, the total size of the SMA self-resetting plate 3-1 is 384mm×60mm×8mm, the length of the long steel plate of the end plate of the SMA self-resetting plate 3-1 is 80mm, the width is 70mm, the plate thickness is 8mm, the length of the short steel plate is 30mm, and the width is 70mm. Plate thickness 8mm; bolt hole diameter 7mm, bolt hole spacing 32mm, self-tapping screw 7 length 90mm; first viscoelastic layer 3-4 and second viscoelastic layer 3-5 size 140mm×60mm×6mm; upper steel plate 3-3 The lower steel plate 3-2 is made of Q345 steel, with a size of 212mm×60mm×8mm; the small steel plates positioned at both ends are 70mm long, 15mm wide and 2mm thick; the upper steel plate 3-3 has a central spring slot with a diameter of 25mm and a depth of 4mm.

FIG. 5 shows a damper box diagram of an embodiment of the present invention. The damper box 4 is composed of a positioning pin 4-1, a lower damping body positioning slot 4-2, an upper damping body positioning slot 4-3, a roller 4-4 and a damper box groove 4-5. The damper box 4 is used for fixing the damping body 3 and the shock absorption and vibration isolation device 5 , and is connected with the outer steel plate 2 .

As shown in Figure 5, the damper box 4 is a frame-shaped structure, one side is open, two side walls are provided with through grooves, the upper and lower edges of the through groove are provided with rollers 4-4, and the inner walls of the two side walls are provided with positioning slots; The end plates of the first viscoelastic layer 3 - 4 and the second viscoelastic layer 3 - 5 are clamped in the positioning grooves on the inner walls of the two side walls of the damper box 4 . The top is provided with a groove 4-5 for placing the shock absorption and vibration isolation device 5, and positioning pins 4-1 are arranged around the left side of the damper box 4 for connecting the damper box 4 and the outer steel plate 2. The lower damping body positioning slot 4-2 and the upper damping body positioning slot 4-3 are used to fix the damping body, and the upper damping body positioning slot 4-3 is reserved for vertical load compared to the upper steel plate 3-3 for positioning the small steel plate The active range of the compression deformation under the action. Rollers 4-4 are arranged on the front and rear sides of the damper box 4, and lubricating oil is applied to the inside of the rollers to reduce the frictional force when the SMA self-reset plate 3-1 slides horizontally. The upper surface of the damper box 4 is provided with a trapezoidal groove 4-5 for placing the shock absorption and vibration isolation device 5. The lower part of the trapezoidal groove is hollowed out to ensure that the upper load is transmitted to the damping body 3 through the shock absorption and vibration isolation spring 5-2.

Among them, the damper box 4 is welded with Q235 or Q345 steel plates, with a length of 192mm-288mm, a width of 96mm-192mm, and a height of 48mm-96mm; the wall thickness of the steel plate of the box is 6mm-10mm; the diameter of the positioning pin 4-1 is 3mm-5mm, Length 2mm-5mm; upper damping body positioning slot 4-2 length 40mm-80mm, height 20mm-30mm, thickness 2mm-4mm; lower damping body positioning slot 4-3 length 40mm-80mm, height 15mm-30mm, thickness 2mm -4mm; Roller 4-4 diameter 8mm-10mm, length 40mm-80mm. The grooves 4-5 of the damper box are trapezoidal grooves, the upper length of the inner boundary is 110mm-164mm, the width is 22mm-54mm, the lower length is 80mm-130mm, the width is 15mm-50mm, and the height of the groove is 31-72mm. In one embodiment, the damper box 4 is made of Q345 steel, the section size is 224mm×110mm×75mm, and the wall thickness of the box is 8mm. Locating pin 4-1 has a diameter of 4mm and a length of 3mm; the upper damping body positioning slot 4-3 is 70mm long, 19mm high and 2mm thick; the lower damper body positioning slot 4-2 is 70mm long, 10mm high and 2mm thick; roller 4 -4 diameter 8mm, length 70mm; damper box groove 4-5 inner boundary dimensions upper length 130mm, width 50mm, lower length 100mm, width 40mm, trapezoidal groove depth 34mm.

FIG. 6 shows a view of an outer steel plate of an embodiment of the present invention. The outer steel plate 2 is a rectangular steel plate, and the positioning holes 2-1 and the bolt holes of the inner hexagon bolts 2-2 are arranged around. Among them, the outer steel plate 2 is made of Q235 or Q345 steel plate, with a length of 192mm-288mm, a height of 96mm-192mm, and a thickness of 5mm-10mm. Positioning hole 2-1, diameter 3mm-6mm, depth 2mm-5mm; 2-2 bolt holes for hexagon socket head bolt, diameter 3mm-5mm, length 10mm-20mm. In one embodiment, the size of the steel plate is 224mm×110mm×5mm; the diameter of the positioning hole is 4mm and the depth is 3mm; the diameter of the hexagon socket head bolt is 4mm and the length is 15mm.

FIG. 7 shows a diagram of a shock-absorbing and vibration-isolating device according to an embodiment of the present invention. The shock absorption and vibration isolation device 5 is composed of a rectangular cover plate 5-1, a shock absorption vibration isolation spring 5-2 and a trapezoidal frame cylinder 5-3. One end of the damping and vibration isolation spring 5-2 is welded to the rectangular cover plate 5-1, and the other end is placed in the circular slot of the upper steel plate 3-3.

Among them, the shock-absorbing vibration isolation device 5 is made of Q235 or Q345 steel plate, the rectangular cover plate 5-1 is 32mm-70mm long, 120mm-180mm wide, and 5mm-10mm thick; the shock-absorbing vibration isolation spring 5-2 has a diameter of 15mm-40mm and a length of 30mm -85mm, the center distance between the two springs is 30mm-50mm; the trapezoidal frame tube 5-3 has a wall thickness of 5mm-10mm and a depth of 31mm-72mm. 130mm, width 15mm-50mm. In one embodiment, the total height of the shock-absorbing and vibration-isolating device 5 is 42 mm, the size of the rectangular cover plate 5-1 is 60 mm×140 mm×8 mm, the diameter of the shock-absorbing and vibration-isolating spring 5-2 is 25 mm, the length is 38 mm, and the center distance between the two springs is 40 mm. Trapezoidal frame tube 5-3 has a rectangular size of 120mm×40mm on the upper periphery, a rectangle size of 90mm×30mm on the lower periphery, a depth of 34mm, and a wall thickness of 5mm.

FIG. 8 shows the connection diagram of the damper and the overhanging beam according to the embodiment of the present invention. Rectangular grooves and self-tapping screw holes are provided at the ends of the overhang 6, and the damping body 3 is connected to the overhang 6 through self-tapping screws 7 and epoxy resin. A pair of overhangs 6 are provided with installation grooves, the SMA self-resetting plate 3-1 is inserted into the installation groove, and the self-tapping screws 7 penetrate through the installation groove and the bolt holes of the SMA self-resetting plate 3-1, and the pair of overhangs 6 Connect with the damping body 3 .

In one embodiment, the cross-sectional size of the rectangular through groove 9 of the peach-point beam is 80 mm×110 mm, and the length is 224 mm. The size of the rectangular groove at the end of the overhang 6 is 56mm×30mm×8mm.

When the overhang 6 is subjected to an earthquake in the width direction of the surface, the SMA self-resetting plate 3-1 in the device exhibits self-resetting properties, and the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 exert shear lag The energy-recovery characteristics can reduce the deformation of the overhangs and enhance the energy-dissipation capacity of the bucket nodes. At the same time, under the load of the upper roof truss, the internal spring of the shock-absorbing and vibration-isolating device 5 can exert the effect of shock-absorbing and isolating, and improve the seismic performance of the bucket joint.

The connecting method of the self-resetting energy-consuming vibration isolation device of the stigma head of the replaceable viscoelastic damper of the present invention specifically includes the following steps:

Step 1: Connect the SMA self-resetting plate 3-1, the lower steel plate 3-2, the upper steel plate 3-3, the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 by vulcanization to form the damping body 3.

Step 2: The damping body 3 is first positioned through the lower damping body positioning slot 4-2 and the upper damping body positioning slot 4-3, and then the shock absorption and vibration isolation device 5 is connected through the damper box groove 4-5, and finally The outer steel plate 2 is assembled into the damper 1 through the positioning hole 2-1 and the hexagon socket head bolt 2-2.

Step 3: Open a rectangular through-slot 9 at the junction of the peach-point beam 8 and the overhang 6, and place the damper 1 in the peach-point beam rectangular through-groove 9, the side and bottom surfaces of the damper 1 and the peach-point beam The inner walls of the rectangular through grooves 9 are connected by epoxy resin adhesive.

Step 4: Open the grooves and self-tapping screw holes corresponding to the SMA self-resetting board 3-1 at the end of the overhang 6, connect the overhang 6 with the damper 1 through epoxy resin adhesive and self-tapping screws 7 connect.

The working principle of the utility model is as follows: when the overhanging eaves are not affected by external force, the damper 1 is in a balanced state; when the overhanging eaves is subjected to horizontal displacement by the earthquake action in the width direction of the surface, the SMA self-resetting plate 3-1 in the device Deformation occurs, and the superelasticity and self-resetting properties of the SMA material are used to drive the eaves to reset in the opposite direction; at the same time, when the SMA self-resetting plate 3-1 moves, the first viscoelastic layer 3-4 and the second viscoelastic The layer 3-5 is subjected to the pressure of the upper shock-absorbing vibration isolation spring 5-2 and the shear force of the SMA self-resetting plate 3-1, so that shear deformation occurs between the viscoelastic layers, thereby consuming seismic energy. In the vertical direction, the vertical load borne by the overhanging girder is transmitted to the damping body 3 through the shock-absorbing and vibration-isolating device 5 , so that the shock-absorbing and vibration-isolating spring 5-2 enhances the damping body 3 while playing the role of shock-absorbing and isolating. Shear hysteretic energy dissipation. Therefore, the damper 1 reduces the vibration of the bucket joint through the combined action of the shear energy dissipation of the viscoelastic material layer, the superelasticity and self-reset characteristics of the SMA self-resetting plate, and the vibration reduction and isolation of the shock-absorbing and vibration-isolating spring 5-2. The deformation enhances the seismic performance of the stigmas.

The damper is located at the junction between the overhang of the stigma and the peach tip beam, and it is concealed. At the same time, considering the replaceability of the device, regular maintenance and replacement of the components of the device can effectively ensure its shock absorption. The stability of the vibration isolation effect. The appearance treatment of the reinforced Dougong nodes not only satisfies the principle of "not changing the appearance of cultural relics", but also enhances the self-reset energy dissipation capacity of Dougong nodes, which optimizes the seismic performance of the entire structure.

The above description is only a preferred embodiment of the present invention patent, but the protection scope of the present invention patent is not limited to this. Changes or substitutions that can be easily thought of should be covered within the protection scope of the present invention patent.

Claims (10)

1. A column cap bucket arch self-resetting energy dissipation and vibration isolation device with a replaceable viscoelastic damper is characterized by comprising a damper (1), cornices (6) and peach pointed beams (8), wherein the surfaces of the peach pointed beams (8) are provided with peach pointed beam rectangular through grooves (9), the damper (1) is arranged in the peach pointed beam rectangular through grooves (9), and a pair of cornices (6) are connected with the damper (1);

the damper (1) is overlapped with the damping body (3) through a damping vibration isolation device (5), and when the cornice purlin (6) is subjected to horizontal displacement in the face width direction, the damping body (3) is reset in the opposite direction; when the cornice (6) is loaded in the vertical direction, the shock absorption and isolation device (5) realizes shock absorption and isolation.

2. The mast head cornice self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 1, wherein the damper (1) comprises an outer steel plate (2), a damping body (3), a damper box body (4) and a vibration absorption and vibration isolation device (5); the damping vibration isolation device (5) is arranged in the damper box body (4), the damping body (3) is arranged below the damping vibration isolation device (5), the outer steel plate (2) is buckled with the damper box body (4), and the two sides of the damping body (3) extend out of the damper box body (4) to be connected with a pair of cornices (6).

3. The mast head cornice self-resetting energy dissipation and vibration isolation device with the replaceable viscoelastic damper as claimed in claim 2, wherein the damper box body (4) is of a frame-shaped structure, one side of the damper box body is open, through grooves are formed in two side walls of the damper box body, rolling shafts are arranged at the upper edge and the lower edge of each through groove, and positioning clamping grooves are formed in the inner walls of the two side walls of the damper box body; the top is provided with a groove (4-5) for placing a shock absorption and vibration isolation device (5).

4. The mast head arch self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 3, wherein the damping body (3) comprises an SMA self-resetting plate (3-1), a lower steel plate (3-2), an upper steel plate (3-3) and a viscoelastic layer, the viscoelastic layer is respectively connected to the upper surface and the lower surface of the SMA self-resetting plate (3-1), and the upper steel plate (3-3) and the lower steel plate (3-2) are respectively arranged on the upper surface and the lower surface of the viscoelastic layer.

5. The mast head cornice arch self-resetting energy dissipation and vibration isolation device with the replaceable viscoelastic damper as claimed in claim 4, wherein end plates of the upper steel plate (3-3) and the lower steel plate (3-2) are clamped in positioning clamping grooves in inner walls of two side walls of the damper box body (4).

6. The mast head arch self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 4, wherein the SMA self-resetting plate (3-1) is made of a nickel-titanium alloy material;

the viscoelastic layer is formed by bonding a second viscoelastic layer (3-5) between an upper first viscoelastic layer (3-4) and a lower first viscoelastic layer.

7. The mast head arch self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 4, wherein a reserved hole is formed in the upper steel plate (3-3); bolt holes are formed in two end portions of the SMA self-resetting plate (3-1).

8. The interchangeable viscoelastic damper mast head arch self-resetting energy dissipation and vibration isolation device as claimed in claim 1, wherein the shock absorption and vibration isolation device (5) comprises a rectangular cover plate (5-1), two sets of shock absorption and vibration isolation springs (5-2) and a trapezoidal frame cylinder (5-3), and the shock absorption and vibration isolation springs (5-2) are welded on the rectangular cover plate (5-1) and are arranged in the trapezoidal frame cylinder (5-3).

9. The mast head arch self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 8, wherein the shock absorption and vibration isolation spring (5-2) in the shock absorption and vibration isolation device (5) passes through the preformed holes of the bottom and upper steel plates (3-3) of the shock absorption and vibration isolation device (5) and is connected with the first viscoelastic layer (3-4).

10. The column capital arch self-resetting energy dissipation and vibration isolation device of the replaceable viscoelastic damper as claimed in claim 4, wherein a pair of cornice blocks (6) are provided with mounting grooves, the SMA self-resetting plate (3-1) is inserted into the mounting grooves, and the cornice blocks (6) are connected with the damping body (3) by a self-tapping screw (7) penetrating through the mounting grooves and bolt holes of the SMA self-resetting plate (3-1).

Images