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

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

Technical Field

The utility model relates to the technical field of energy dissipation and shock absorption of ancient building wood structure rabbits and building structures, in particular to a column capital arch self-resetting energy dissipation and vibration isolation device with a replaceable viscoelastic damper.

Background

The ancient Chinese building is reputable in the world building history in an ingenious structural form and various artistic modeling. The kung bucket is the most distinctive feature in the ancient building with a Chinese wood structure, and a node form with complex structure and stress performance mainly comprises a bucket, a kung, an ang and a balk which are crossed vertically and horizontally, mutually occluded and layered. The kung bucket has the functions of load transmission, shock absorption and energy consumption and attractive appearance

The column cap corbel arch is used as a node for connecting the roof truss and the wood column and is an important force bearing and transferring component. Under the action of an earthquake, most of load transmission and energy dissipation are borne by the column capital bucket arch, but due to the common influence of multiple factors such as time and environment, the existing column capital bucket arch generally has the problem of damage of different degrees, for example, the overall shape of damage such as oblique flash, inclination and eccentricity, and the like, so that the earthquake resistance of the wood structure is influenced.

The traditional bucket arch reinforcing method is mainly characterized in that flat steel or other alloy materials are adopted to reinforce the bucket arch at limited positions such as a big bucket, a flat plate square column and a smoke box, although the shock resistance of the bucket arch is improved to a certain degree, the size of the bucket arch component is small, the reinforcing method is complex to operate, and the damage to the component is easily caused. Meanwhile, the bucket arch component is reinforced by the flat steel, the appearance and the cultural relic current situation of the bucket arch are changed, and the reinforcing principle of the ancient architecture is violated.

At present, the shock absorption and vibration isolation is a hot field of the shock resistance of an engineering structure, a shock absorption system changes the dynamic response of the structure through an energy consumption and shock absorption device, so that the shock response of the structure is obviously attenuated, the safety of the structure in strong shock is effectively protected, and the shock resistance of the structure is improved. The viscoelastic damper is widely applied in engineering practice, consumes seismic energy mainly through the shear hysteresis performance of materials, and is simple and convenient to actually reinforce and operate and high in applicability.

In view of this, it is necessary to provide a column capital arch self-resetting energy dissipation vibration isolation device with a replaceable viscoelastic damper, which improves the anti-seismic performance of the bucket arch cornice purlin without changing the 'old and worn' principle of the ancient building structure.

SUMMERY OF THE UTILITY MODEL

To solve the above drawbacks and deficiencies of the prior art, an object of the present invention is to provide a column pillar arch self-resetting energy dissipation vibration isolation device with replaceable viscoelastic dampers. 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.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides 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 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.

Preferably, the damper comprises an outer steel plate, a damping body, a damper box body and a shock absorption and vibration isolation device; the damping and vibration isolating device is arranged in the damper box body, the damping body is arranged below the damping and vibration isolating device, the outer steel plate is buckled with the damper box body, and the two sides of the damping body extend out of the damper box body to be connected with a pair of cornices.

As a preferred scheme, the damper box body is of a frame-shaped structure, one side of the damper box body is provided with an opening, through grooves are formed in the 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 through groove; the top is provided with a groove for placing the shock absorption and vibration isolation device.

Preferably, the damping body comprises an SMA self-resetting plate, a lower steel plate, an upper steel plate and a viscoelastic layer, the viscoelastic layer is respectively connected to the upper surface and the lower surface of the SMA self-resetting plate, and the upper steel plate and the lower steel plate are respectively arranged on the upper surface and the lower surface of the viscoelastic layer.

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

Preferably, the SMA self-resetting plate is made of a nickel-titanium alloy material; the viscoelastic layer is formed by bonding a second viscoelastic layer between an upper first viscoelastic layer and a lower first viscoelastic layer.

As a preferred scheme, a preformed hole is arranged on the upper steel plate; the two ends of the SMA self-resetting plate are provided with bolt holes.

Preferably, the damping and vibration isolating device comprises a rectangular cover plate, two groups of damping and vibration isolating springs and a trapezoidal frame cylinder, and the damping and vibration isolating springs are welded on the rectangular cover plate and are arranged in the trapezoidal frame cylinder.

Preferably, the damping and vibration isolating spring in the damping and vibration isolating device passes through the preformed holes of the bottom and upper steel plates of the damping and vibration isolating device and is connected with the first viscoelastic layer.

As preferred scheme, a pair of cornice purlin sets up the mounting groove, and SMA is from inserting in the mounting groove from the reset plate to run through the mounting groove and the bolt hole of SMA from the reset plate through self tapping screw, with a pair of cornice purlin be connected with damping body.

The device can ensure that under the action of an earthquake, the viscoelastic damper in the column capital arch cornice purlin receives the action of earthquake waves along the surface width direction, can fully exert the superelasticity characteristic of the SMA self-reset plate and the shearing hysteresis energy consumption performance among different viscoelastic layers, realizes the self-reset and energy consumption of the cornice purlin, and reduces the deformation of the cornice. Meanwhile, the shock absorption and isolation springs in the damper have the shock absorption and isolation and energy consumption effects, and the shock resistance of the bucket arch is enhanced. The device simple to operate, the suitability is strong, can effectively prevent the deformation of cornice in the actual earthquake, improves bucket arch node's anti-seismic performance.

In summary, the utility model has the following advantages:

1. the device simple structure, the box structure is mainly through steel sheet welded connection, and the device passes through the epoxy bonding with peach sharp roof beam and cornice balk, and welding and bonding easy operation, intensity are high, and stability is good. The outer steel plate is connected with the box body through the positioning pins and the inner hexagon bolts, slight deformation caused by welding local stress at the joint of the outer steel plate and the box body is reduced, and the outer steel plate has the advantages of being convenient to replace, simple to install and reliable in connection when maintained and reinforced.

2. The device consolidates the hookup location that the position is located cornice purlin and peach point roof beam, can effectively reduce the staggered floor between cornice purlin and the peach point roof beam under the seismic action, and reinforcing apparatus is close to the room lid simultaneously, and the difficult emergence corrosion of device is ageing, and life is longer.

3. The device make full use of the buffering and power transmission performance of the shock absorption and vibration isolation spring, the shearing hysteresis performance of the viscoelastic damper and the self-resetting performance of the SMA plate, effectively improves the anti-seismic performance and the service life of the bucket arch, and greatly reduces the possibility of the bucket arch layer of shock damages such as tenon pulling, staggered layer and skew flash.

4. The device performance is stable, and the shock absorption and vibration isolation device is always in a pre-pressing state under the pressure transmitted by the cornice truss and the upper structure. In addition, under the action of different earthquakes, the device has high self-adaptation degree, the whole reinforcing node is in an elastic state under the action of small earthquakes, and under the action of medium earthquakes and large earthquakes, the SMA self-resetting plate induces martensite phase transformation under the driving of large earthquake response, and meanwhile, the shearing hysteresis energy consumption effect of the SMA self-resetting plate is obvious due to the dislocation of the viscoelastic material layer; after the external force is eliminated, the self-reset effect of the SMA plate is obvious, and the residual deformation is small.

5. The device has the advantages of concealment, easy material acquisition, low manufacturing cost and extremely high applicability, and conforms to the principles of repairing and reinforcing ancient building wood structures such as 'original appearance of cultural relics' is not changed and 'old as old'.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model:

FIG. 1 is a diagram illustrating a position of a mast arch stiffener according to an embodiment of the present invention;

fig. 2 is a connection diagram of a reinforcing device and a cornice purlin in an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is an exploded view of a damping body in an embodiment of the present invention;

FIG. 5 is a diagram of a damper housing of an embodiment of the present invention;

FIG. 6 is a drawing of an outboard steel plate of an embodiment of the present invention;

FIG. 7 is a view of a shock absorbing and vibration isolating apparatus according to an embodiment of the present invention;

fig. 8 is a connection diagram of a damper and a cornice purlin according to an embodiment of the present invention.

The reference numerals in the drawings mean: 1-a damper, 2-an outer steel plate, 2-1-a positioning hole, 2-2-an inner hexagon bolt, 3-a damping body, 3-1-an SMA self-resetting plate, 3-2-a lower steel plate, 3-3-an upper steel plate, 3-4-a first viscoelastic layer, 3-5-a second viscoelastic layer, 4-a damper box body, 4-1-a positioning pin, 4-2-a lower damping body positioning clamping groove, 4-3-an upper damping body positioning clamping groove, 4-4-a rolling shaft, 4-5-a damper box body groove, 5-a damping vibration isolation device, 5-1-a rectangular cover plate, 5-2-a damping vibration isolation spring and 5-3-a trapezoidal frame cylinder, 6-corncob, 7-self-tapping screw, 8-peach sharp beam and 9-peach sharp beam rectangular through groove.

Detailed Description

The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the present invention are provided to explain the present invention without limiting the utility model thereto.

Fig. 1 and 2 show a schematic diagram of a column capital arch self-resetting energy dissipation and vibration isolation device with a replaceable viscoelastic damper, which comprises a peach sharp beam 8, a cornice balk 6 and a damper 1, wherein a peach sharp beam rectangular through groove 9 is formed at the joint of the surface of the peach sharp beam 8 and the cornice balk 6, and the damper 1 is bonded in the peach sharp beam rectangular through groove 9 through epoxy resin. Fig. 3 is a block diagram of the damper 1, which includes an outer steel plate 2, a damping body 3, a damper case 4, and a vibration damping and isolating device 5. Firstly, a damping body 3 is fixed with a damper box body 4 through a lower damping body positioning clamping groove 4-2 and an upper damping body positioning clamping groove 4-3, then a damping and vibration isolation device 5 is fixed with the damper box body 4 through a damper box body groove 4-5, and finally an outer side steel plate 2 is assembled with the damper box body 4 into a damper 1 through a positioning hole 2-1 and an inner hexagon bolt 2-1. Set up peach sharp roof beam rectangle through groove 9 in peach sharp roof beam 8 and cornice 6's hookup location department, through epoxy with attenuator 1 and peach sharp roof beam rectangle through groove 9 inner walls bonding, damping body 3 is connected with cornice 6 through self-tapping screw 7 and epoxy simultaneously.

Figure 4 shows an exploded view of a damping body in an embodiment of the utility model. 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 upper steel plate 3-3 is provided with a circular clamping groove for placing a damping and vibration isolating spring 5-2.

As shown in FIG. 4, 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. Wherein, 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 3-4.

Wherein, the SMA self-reset plate 3-1 is made of nickel-titanium alloy material, the total length is 308mm-397mm, the width is 35mm-70mm, and the thickness is 5mm-10 mm; the SMA self-resetting plate 3-1 end plate is of a T-shaped structure and consists of two short steel plates and one long steel plate. The long steel plate is 80-100 mm long, 35-70 mm wide, 5-10 mm thick, the short steel plate is 30-50 mm long, 35-70 mm wide and 5-10 mm thick, self-tapping screw holes are formed in the surface of the short steel plate, the diameter of each bolt hole is 5-10 mm, the distance between the bolt holes is 30-45 mm, and the length of each self-tapping screw is 7-80-100 mm. The first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 are both high-damping viscoelastic materials, and have the length of 120-160 mm, the width of 40-60 mm and the thickness of 5-10 mm; the two ends of the upper steel plate 3-3 and the lower steel plate 3-2 are respectively provided with a small positioning steel plate which is respectively corresponding to the lower damping body positioning clamping groove 4-3 and the upper damping body positioning clamping groove 4-2 and is used for fixing the damping body 3. The upper surface of the upper steel plate 3-3 is provided with a spring clamping groove for fixing a damping 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, the length is 200mm-240mm, the width is 40mm-60mm, and the thickness is 5mm-10 mm; the positioning small steel plate is 35mm-80mm long, 10mm-25mm high and 2mm-4mm thick. The depth of the clamping groove of the upper steel plate spring is 2mm-6 mm. In one embodiment, the total size of the SMA self-resetting plate 3-1 is 384mm multiplied by 60mm multiplied by 8mm, the length 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, the width is 70mm, and the plate thickness is 8 mm; the diameter of the bolt holes is 7mm, the distance between the bolt holes is 32mm, and the length of the self-tapping screw is 7mm and 90 mm; the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 have dimensions 140mm x 60mm x 6 mm; the upper steel plate 3-3 and the lower steel plate 3-2 are made of Q345 steel, and the size is 212mm multiplied by 60mm multiplied by 8 mm; the small steel plates positioned at the two ends have the length of 70mm, the width of 15mm and the thickness of 2 mm; the diameter of the central spring clamping groove of the upper steel plate 3-3 is 25mm, and the depth is 4 mm.

Figure 5 shows a diagram of a damper housing of an embodiment of the present invention. The damper box body 4 is composed of a positioning pin 4-1, a lower damper body positioning clamping groove 4-2, an upper damper body positioning clamping groove 4-3, a rolling shaft 4-4 and a damper box body 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 fig. 5, 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 the two side walls of the damper box body, the upper edge and the lower edge of each through groove are provided with rolling shafts 4-4, and the inner walls of the two side walls are provided with positioning clamping grooves; the end plates of the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 are clamped in positioning clamping grooves in the inner walls of two side walls of the damper box body 4. The top of the box body is provided with a groove 4-5 for placing a damping and vibration isolating device 5, and positioning pins 4-1 are arranged around the left side of the damper box body 4 and used for connecting the damper box body 4 with the outer steel plate 2. The lower damping body positioning clamping groove 4-2 and the upper damping body positioning clamping groove 4-3 are used for fixing the damping body, and the upper damping body positioning clamping groove 4-3 is used for positioning a movable range of compression deformation under the action of a reserved vertical load compared with the upper steel plate 3-3. The front side and the rear side of the damper box body 4 are provided with rolling shafts 4-4, and lubricating oil is smeared on the inner sides of the rolling shafts, so that the friction force of the SMA self-resetting plate 3-1 during horizontal sliding is reduced. The upper surface of the damper box body 4 is provided with a trapezoidal groove 4-5 for placing a damping and vibration isolating device 5, and the lower part of the trapezoidal groove is hollowed out to ensure that the upper load is transmitted to the damping body 3 through a damping and vibration isolating spring 5-2.

Wherein the damper box body 4 is formed by welding Q235 or Q345 steel plates, and has a length of 192mm-288mm, a width of 96mm-192mm and a height of 48mm-96 mm; the wall thickness of the steel plate of the box body is 6mm-10 mm; the diameter of the positioning pin is 4-1 mm and the length is 2mm-5 mm; the upper damping body positioning clamping groove is 4-2, 40mm-80mm long, 20mm-30mm high and 2mm-4mm thick; the lower damping body positioning clamping groove is 4-3 mm long and 40-80 mm high and 2-4 mm thick; the diameter of the roller 4-4 is 8mm-10mm, and the length is 40mm-80 mm. The groove 4-5 of the damper box body is a ladder-shaped groove, the upper part of the inner boundary is 110mm-164mm long, 22mm-54mm wide, the lower part is 80mm-130mm long, 15mm-50mm wide and 31-72mm high. In one embodiment, the damper box body 4 is made of Q345 steel, the section dimension is 224mm multiplied by 110mm multiplied by 75mm, and the wall thickness of the box body is 8 mm. The diameter of the positioning pin is 4mm to 1, and the length of the positioning pin is 3 mm; the upper damping body positioning clamping groove is 4-3 mm long, 19mm high and 2mm thick; the lower damping body positioning clamping groove is 4-2, 70mm long, 10mm high and 2mm thick; the diameter of the roller 4-4 is 8mm, and the length is 70 mm; the upper part of the inner boundary size of the groove 4-5 of the damper box body is 130mm long and 50mm wide, the lower part of the groove is 100mm long and 40mm wide, and the depth of the trapezoidal groove is 34 mm.

FIG. 6 shows an outside steel sheet view of an embodiment of the present invention. The outer steel plate 2 is a rectangular steel plate, and bolt holes of positioning holes 2-1 and inner hexagon bolts 2-2 are arranged on the periphery of the rectangular steel plate. Wherein, the outer steel plate 2 adopts a Q235 or Q345 steel plate with the length of 192mm-288mm, the height of 96mm-192mm and the thickness of 5mm-10 mm. 2-1 of positioning hole, 3-6 mm of diameter and 2-5 mm of depth; 2-2 bolt holes of the hexagon socket head cap screw, 3-5 mm in diameter and 10-20 mm in length. In one embodiment, the steel plate dimensions are 224mm x 110mm x 5 mm; the diameter of the positioning hole is 4mm, the depth is 3mm, the diameter of the hexagon socket head cap screw is 4mm, and the length is 15 mm.

Fig. 7 shows a diagram of a shock absorbing and vibration isolating apparatus according to an embodiment of the present invention. The shock absorption and vibration isolation device 5 consists of a rectangular cover plate 5-1, a shock absorption and vibration isolation spring 5-2 and a trapezoidal frame cylinder 5-3. One end of the shock absorption and vibration isolation spring 5-2 is welded on the rectangular cover plate 5-1, and the other end is arranged in the circular clamping groove of the upper steel plate 3-3.

Wherein, the damping and vibration isolation device 5 adopts a Q235 or Q345 steel plate, and the rectangular cover plate 5-1 has the length of 32mm-70mm, the width of 120mm-180mm and the thickness of 5mm-10 mm; the diameter of the damping and vibration-isolating spring 5-2 is 15mm-40mm, the length is 30mm-85mm, and the center distance between the two springs is 30mm-50 mm; the wall thickness of the trapezoid frame cylinder 5-3 is 5mm-10mm, the depth is 31mm-72mm, the length of the rectangle at the periphery of the upper part is 110mm-164mm, the width is 22mm-54mm, the length of the rectangle at the periphery of the lower part is 80mm-130mm, and the width is 15mm-50 mm. In one embodiment, the height of the shock and vibration absorbing device 5 is 42mm, the size of the rectangular cover plate 5-1 is 60mm multiplied by 140mm multiplied by 8mm, the diameter of the shock and vibration absorbing spring 5-2 is 25mm, the length is 38mm, and the center distance between the two springs is 40 mm. The peripheral rectangle of the upper part of the trapezoid frame cylinder 5-3 is 120mm multiplied by 40mm, the peripheral rectangle of the lower part is 90mm multiplied by 30mm, the depth is 34mm, and the wall thickness is 5 mm.

Fig. 8 shows a connection diagram of a damper and a cornice purlin according to an embodiment of the present invention. Rectangular grooves and self-tapping screw holes are formed in the end portions of the cornice purlin 6, and the damping body 3 is connected with the cornice purlin 6 through self-tapping screws 7 and epoxy resin. A pair of cornice 6 is provided with an installation groove, an SMA self-resetting plate 3-1 is inserted into the installation groove, a self-tapping screw 7 penetrates through the installation groove and a bolt hole of the SMA self-resetting plate 3-1, and the pair of cornice 6 is connected with the damping body 3.

In one embodiment, the rectangular through slot 9 of the peach-tipped beam has the cross-sectional dimension of 80mm × 110mm and the length of 224 mm. The rectangular groove at the end of 6 cornice purlin has the size of 56mm multiplied by 30mm multiplied by 8 mm.

When the cornice 6 is subjected to the action of an earthquake in the face width direction, the SMA self-resetting plate 3-1 in the device exerts the self-resetting characteristic, and the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 exert the shearing hysteresis energy consumption characteristic, so that the cornice deformation is reduced, and the energy consumption capacity of the bucket cornice node is enhanced. Meanwhile, under the load action of the upper roof truss, the damping and vibration isolating device 5 has the advantages that the damping and vibration isolating effect can be exerted by the internal spring, and the anti-seismic performance of the bucket arch node is improved.

The utility model discloses a connecting method of a mast head science bucket arch self-resetting energy dissipation vibration isolation device with a replaceable viscoelastic damper, which specifically comprises the following steps:

step 1: and (3) connecting 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 into the damping body 3 through vulcanization.

Step 2: the damping body 3 is firstly positioned through the lower damping body positioning clamping groove 4-2 and the upper damping body positioning clamping groove 4-3, then the damping and vibration isolation device 5 is connected through the damper box body 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 cap screw 2-2.

And step 3: a peach sharp beam rectangular through groove 9 is formed in the joint of the peach sharp beam 8 and the cornice purlin 6, the damper 1 is arranged in the peach sharp beam rectangular through groove 9, and the side face and the bottom face of the damper 1 are connected with the inner wall of the peach sharp beam rectangular through groove 9 through epoxy resin bonding agents.

And 4, step 4: a groove and a self-tapping screw hole corresponding to the SMA self-resetting plate 3-1 are formed in the end part of the cornice purlin 6, and the cornice purlin 6 is connected with the damper 1 through an epoxy resin adhesive and a self-tapping screw 7.

The working principle of the utility model is as follows: when the cornice is not acted by external force, the damper 1 is in a balanced state; when the cornice is subjected to the action of a face-width direction earthquake to generate horizontal displacement, the SMA self-resetting plate 3-1 in the device deforms, and the cornice is driven to reset in the opposite direction by utilizing the super elasticity and self-resetting characteristics of the SMA material; meanwhile, when the SMA self-resetting plate 3-1 moves, the first viscoelastic layer 3-4 and the second viscoelastic layer 3-5 in the device are subjected to the pressure of the upper side damping and vibration isolating spring 5-2 and the shearing force of the SMA self-resetting plate 3-1, so that shearing deformation occurs among the viscoelastic layers, and seismic energy is consumed. In the vertical direction, the vertical load borne by the cornice truss is transmitted to the damping body 3 through the shock absorption and vibration isolation device 5, so that the shock absorption and vibration isolation spring 5-2 plays a shock absorption and isolation role and simultaneously enhances the shear hysteresis energy consumption role of the damping body 3. Therefore, the damper 1 reduces deformation of the bucket arch node and enhances the seismic performance of the column heading through combined actions of shearing energy consumption of the viscoelastic material layer, superelasticity and self-resetting characteristics of the SMA self-resetting plate and seismic reduction and isolation of the damping and vibration isolation springs 5-2.

The attenuator is located the position department that connects of cornice purlin of column cap branch of academic or vocational study bucket arch and peach sharp roof beam, possesses the disguise, considers the replaceability of device simultaneously, regularly to the maintenance of device component part with change new, can effectively guarantee the stability of its shock attenuation vibration isolation effect. The reinforced bucket arch node is subjected to appearance processing, the principle of 'no change of the appearance of cultural relics' is met, and the self-resetting energy consumption capacity of the bucket arch node is enhanced, so that the anti-seismic performance of the whole structure is optimized.

The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed in the present invention should be covered within the protection scope of the present invention.

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).

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