CN211548160U - SMA suspension pendulum damping device for building - Google Patents
SMA suspension pendulum damping device for building Download PDFInfo
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- CN211548160U CN211548160U CN201921562357.3U CN201921562357U CN211548160U CN 211548160 U CN211548160 U CN 211548160U CN 201921562357 U CN201921562357 U CN 201921562357U CN 211548160 U CN211548160 U CN 211548160U
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Abstract
The utility model discloses a SMA pendulum damping device for building, including fixed support device, fixed support device is the spatial structure of five closed one side openings, inside cavity, and the quality oscillator passes through the pendulum rod and links to each other with strutting arrangement. The wire-steel cable connecting device is formed by connecting SMA wires and steel cables through wire cable conversion heads. The SMA wire end of the wire-steel cable connecting device passes through the baffle and is connected with the sliding block, and the steel cable end passes through the fixed supporting device after being turned by the upper turning pulley and is fixedly connected with an external structure. The utility model discloses combine pendulum shock attenuation system and SMA silk, utilize silk-cable wire connecting device and structure internal connection, pass through silk-cable wire connecting device with pendulum shock attenuation system's inertial force and transmit for the structure, utilize the pseudo-elasticity of phase transition of SMA silk to provide the damping simultaneously, reach the absorbing purpose of energy dissipation. The device has the characteristics of simple manufacture, convenient and flexible arrangement and the like, and can effectively reduce the earthquake response of the structure.
Description
Technical Field
The utility model belongs to the technical field of vibration damper, concretely relates to SMA pendulum damping device for building.
Background
At present, most of the existing historical building structures in China are long-term built, natural disasters and artificial damages are serious, the anti-disaster capability is poor, and dynamic disaster protection is urgently needed. However, due to the particularity of historic building structure protection, many problems, especially the shock absorption technology and protection theory of the historic building structure are still imperfect, and the prior art needs to be improved.
The historic building is different from the modern building, the shock absorption protection of the historic building follows the principle of ancient building protection and repair, and large-area destructive reinforcement can not be carried out on the historic building, so that the method for carrying out shock absorption reinforcement on the historic building structure by utilizing the external damping shock absorption device is an ideal method. The scholars in China have already studied in the field, for example, Zhao Xiang has proposed a shape memory alloy damper in article "model structure shaking table test research based on SMA damper", formulated the damping reinforcement scheme to Guangzhou temple light tower, and made the model and carried on the shaking table test. However, in this solution, the SMA damper is disposed outside the light tower, and a plurality of channels are required to be formed on the surface of the tower body for connecting the tower top steel cable and the tower bottom damper. Although the method can play a certain role in shock absorption of the historical buildings, the structure of the historical buildings is seriously damaged, the original appearance of the historical buildings is changed, and the original artistic and literary values are lost.
The suspension pendulum damping system is a damping system which can be arranged inside a historical building structure. The suspension pendulum damping system is a structural damping system based on a passive control principle, and the working principle is as follows: when the structure generates a vibration response due to external excitation, the structure vibrates to drive the pendulum mass oscillator to swing, and the swing of the mass oscillator feeds back a control force to the structure, so that the effect of shock absorption is achieved. However, if the pendulum damping system is separately arranged on the floor inside the historic building structure, the pendulum damping system has a small damping effect on the historic building structure due to the characteristics of the pendulum damping system. Therefore, if the suspension pendulum damping system is combined with the SMA wire, and the SMA composite suspension pendulum damping device with good performance is researched and developed by connecting the wire-steel cable with the interior of the historical building structure, the inertia force of the suspension pendulum damping system can be transmitted to the historical building structure through the wire-steel cable, and meanwhile, the SMA wire in the SMA composite suspension pendulum damping device can be used for providing damping, so that the purposes of energy dissipation and damping are achieved, and the seismic response of the historical building structure is obviously reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a SMA pendulum damping device for building has good shock attenuation effect and shock attenuation stability, can prevent effectively that ancient tower class historic building destroyed condition under the macroseism effect from taking place.
The technical scheme adopted by the utility model is that the SMA pendulum damping device for the building comprises a fixed supporting device, wherein the fixed supporting device is a three-dimensional structure with five closed surfaces and one open surface and an internal cavity, a mass oscillator is connected in the fixed supporting device in a hanging way, two wire-steel cable connecting devices are fixed on the periphery of the mass oscillator, and the wire-steel cable connecting devices are symmetrically arranged on two sides in the fixed supporting device; each wire-steel cable connecting device penetrates out of the fixed supporting device upwards to be connected with an external structure, a pair of symmetrically arranged baffles is fixed on a bottom plate of the fixed supporting device, a sliding rail is arranged between the two baffles, two sliding blocks are arranged on the sliding rail, and the downward end of the wire-steel cable connecting device penetrates through the baffles to be connected to one of the sliding blocks.
The utility model is also characterized in that,
the wire-steel cable connecting device comprises an SMA wire and a steel cable which are connected through a wire cable conversion head; one end of the SMA wire, which is far away from the wire rope conversion head, penetrates through the baffle to be connected with the sliding block, and one end of the steel rope, which is far away from the wire rope conversion head, penetrates out of the fixed supporting device to be connected with an external structure.
The fixed supporting device comprises an upper limiting plate, a lower limiting plate and a three-side enclosure plate which are oppositely arranged up and down; the upper limiting plate, the lower limiting plate and the three-side enclosure plate are spliced end to form a structure with five closed sides and an opening at one side and an internal cavity; the baffle is fixed on the lower limit plate.
Bottom diverting pulleys are arranged at the edge parts of two sides of the lower limiting plate, each bottom diverting pulley is respectively positioned at the outer sides of the two baffles, and the SMA wire is diverted through the bottom diverting pulleys and then penetrates through the baffles to be fixedly connected with the sliding block.
A unidirectional hinge is vertically fixed in the middle of the upper limiting plate, and the mass vibrator is connected with the unidirectional hinge through a swing rod; the middle part of the rotating shaft of the unidirectional hinge is smooth and has no thread, so that the free rotation of the swing rod can be ensured.
Upper steering pulleys are symmetrically arranged on two side edges of the upper limiting plate, one end of the steel cable passes through the upper steering pulleys and then penetrates out of the upper limiting plate to be connected with an external structure, and waist-shaped holes are formed in four corners of the lower limiting plate and are connected with the external structure through countersunk bolts and nuts.
The fixed supporting device is also provided with a dust cover outside, the three-side enclosure plate is formed by welding three steel plates, and the middle parts of the two vertical steel plates are provided with connecting buckles connected with the dust cover.
The upper part of the mass oscillator is symmetrically provided with a plurality of threaded holes, and the lower end of the swing rod is provided with threads matched with the threaded holes.
Both sides of the lower part of the mass oscillator are provided with outward extending plates; the inner side of the overhanging plate is provided with a rubber gasket layer.
Be provided with on one side of fixed strutting arrangement opening and be used for dirt-proof dust hood, trilateral fender apron is formed by three steel sheet welding, and each steel sheet middle part is provided with the connector link that is connected with dust hood.
The utility model discloses a SMA pendulum damping device for building beneficial effect is, the utility model discloses a pendulum damping device combines pendulum shock attenuation system and SMA silk, utilizes silk-cable wire connecting device and structure internal connection, transmits the inertial force of pendulum shock attenuation system for the structure through silk-cable wire connecting device, utilizes the pseudo-elasticity of phase transition of SMA silk to provide the damping simultaneously, reaches the absorbing purpose of energy dissipation. The device has the characteristics of simple manufacture, convenient and flexible arrangement and the like, and can effectively reduce the earthquake response of the structure.
Drawings
Fig. 1 is a cross-sectional view of an SMA pendulum suspension damping device for a building of the present invention;
fig. 2 is a side view of an SMA pendulum suspension arrangement for a building of the present invention;
FIG. 3 is a schematic view of the connection between the device of the present invention and a concrete beam slab at the top of a certain storey of a historic building;
fig. 4 is the schematic view of the device of the present invention connected to a concrete beam slab at the bottom of a certain story of a historic building.
In the figure, 1, an upper limiting plate, 2, a lower limiting plate, 3, a three-side enclosure plate, 4, a one-way hinge, 5, a rubber gasket layer, 6, an upper steering pulley, 7, a baffle, 8, a bottom steering pulley, 9, a kidney-shaped hole, 10, a connecting buckle, 11, a swing rod, 12, SMA wires, 13, a wire cable conversion head, 14, a steel cable, 15, a top concrete beam plate, 16, a bottom concrete beam plate, 17, a countersunk head bolt nut, 100, a fixed supporting device, 200, a mass vibrator, 300, a sliding block, 400, a wire-steel cable connecting device and 500 a dust cover.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
An SMA suspension pendulum damping device for a building is structurally shown in figure 1 and comprises a fixed supporting device 100, wherein the fixed supporting device 100 is a three-dimensional structure with five closed surfaces and one open surface and an internal cavity, a mass oscillator 200 is connected in the fixed supporting device 100 in a hanging manner, two wire-steel cable connecting devices are fixed on the periphery of the mass oscillator 200, and the wire-steel cable connecting devices 400 are symmetrically arranged on two sides in the fixed supporting device 100; each wire-steel cable connecting device penetrates through the fixed supporting device 100 upwards to be connected with an external structure, a pair of baffles 7 which are symmetrically arranged are fixed on a bottom plate of the fixed supporting device 100, a sliding rail is arranged between the two baffles 7, two sliding blocks 300 are arranged on the sliding rail, and one downward end of the wire-steel cable connecting device penetrates through the baffle 7 to be connected with one of the sliding blocks 300.
The wire-steel cable connecting device 400 comprises an SMA wire 12 and a steel cable 14, wherein the SMA wire 12 and the steel cable 14 are connected through a wire cable conversion head 13; one end of the SMA wire 12 far away from the wire rope switching head 13 penetrates through the baffle 7 to be connected with the sliding block 300, and one end of the steel cable 14 far away from the wire rope switching head 13 penetrates out of the fixed supporting device 100 to be connected with an external structure.
The fixed supporting device 100 comprises an upper limiting plate 1, a lower limiting plate 2 and a three-side enclosure plate 3 which are oppositely arranged up and down; the upper limiting plate 1, the lower limiting plate 2 and the three-side enclosure plate 3 are spliced end to form a structure with five closed sides and an opening at one side and an internal cavity; the baffle 7 is fixed on the lower limit plate 2.
The edge parts of two sides of the lower limiting plate 2 are also provided with bottom diverting pulleys 8, each bottom diverting pulley 8 is respectively positioned at the outer sides of the two baffles 7, and the SMA wire 12 is diverted through the bottom diverting pulleys 8 and then passes through the baffles to be fixedly connected with the sliding block 300.
A unidirectional hinge 4 (shown in figure 2) is vertically fixed in the middle of the upper limiting plate 1, and the mass oscillator 200 is connected with the unidirectional hinge 4 through a swing rod 11; the middle part of the rotating shaft of the unidirectional hinge 4 is smooth and has no thread, so that the free rotation of the swing rod 11 can be ensured.
Upper diverting pulleys 6 are symmetrically arranged on the two side edges of the upper limiting plate 1, one end of a steel cable 14 passes through the upper diverting pulleys 6 and then penetrates out of the upper limiting plate 1 to be connected with an external structure, and waist-shaped holes 9 are formed in the four corners of the lower limiting plate and are connected with the external structure through countersunk bolts and nuts 17. The steel cable 14 passes through the upper diverting pulley diverting 6 and penetrates out of the device to be fixedly connected with a top concrete beam plate 15 or a bottom concrete beam plate 16 of a certain layer of the structure through a countersunk bolt and nut (as shown in figures 3 and 4).
The fixed supporting device 100 is also provided with a dust cover 500 outside, the three-side enclosure plate 3 is formed by welding three steel plates, and the middle parts of the two vertical steel plates are provided with connecting buckles 10 connected with the dust cover 500.
The upper part of the mass oscillator 200 is symmetrically provided with a plurality of threaded holes, and the lower end of the swing rod 11 is provided with threads matched with the threaded holes.
The two sides of the lower part of the mass oscillator 200 are provided with outward extending plates; the inner side of the overhanging plate is provided with a rubber gasket layer 5.
The dustproof dust hood 500 is arranged on one side of the opening of the fixed supporting device 100, the three-sided enclosure plate 3 is formed by welding three steel plates, and the middle part of each steel plate is provided with a connecting buckle 10 connected with the dust hood 500.
The SMA wire 12 is austenite at normal temperature, and the phase-change pseudo-elasticity of the austenite SMA wire at normal temperature is utilized to provide damping, so that the purposes of energy dissipation and shock absorption are achieved.
The sliding block 300 is positioned on the lower limiting plate 2, the pretensioning reaction force of the SMA wire 12 in the wire-steel cable connecting device 400 is provided by the baffle 7, and the sliding block 300 is tightly attached to the baffle 7 after pretensioning.
The working principle and the process of the SMA composite suspension pendulum damping device are explained by taking one-time circulation as an example: when the earthquake action is small, the mass oscillator is not in contact with the sliding block and can freely swing, and the reverse inertia force acts on the structure through the rigid fixed supporting device; when the historical building is greatly influenced by earthquake, the mass oscillator and the sliding block move together, if the structure vibrates rightwards, the mass oscillator swings leftwards and drives the sliding block on the right side to move along the horizontal slideway, the SMA wire on the right side is pulled to generate relative displacement delta, the SMA wire on the left side is still in a static state at the moment, when the mass oscillator restores to a balance position, the SMA wire returns to an initial pre-tensioning state, the SMA wire on the right side undergoes an energy consumption circulation process to form a fuller hysteretic curve, energy dissipation and shock absorption on the structure are realized, meanwhile, the inertia force of the mass oscillator is reacted on the structure through the steel cable to generate a restraining effect on the earthquake response of the structure, and the earthquake response of the structure is further attenuated. Similarly, the principle of the mass oscillator moving to the right is the same.
The arrangement of the SMA composite suspended pendulum damping device in the historical building structure can be divided into two methods of steel cable top connection and steel cable bottom connection. The top is connected: the method is that SAM wires are connected with steel cables through wire-cable conversion joints, and the SAM wires are fixed on an upper floor slab of a historical building structure after being turned twice by turning pulleys at the bottom and the top of an SMA composite suspension and oscillation damping device. The bottom is connected: the method is that SAM wires are connected with a steel cable through a wire-cable conversion joint and are fixed at a bottom plate of the structure after being turned by turning pulleys at the bottom and the top of the SMA composite suspension and oscillation damping device. Because the SMA composite suspended pendulum damping device has small volume and flexible arrangement, a plurality of combined setting schemes with different positions and different connection methods can be arranged in the historical building structure. Such as: the top connection, the multi-direction bottom connection, the multi-direction mixed connection and the like along/perpendicular to the coupon hole direction can select a better engineering optimization arrangement mode according to the historical building structure type and the protection requirement. When a plurality of SMA composite suspension pendulum damping devices can be continuously arranged in a building, the historical building structures can be connected into a whole from top to bottom, and the integrity of the historical building structures is effectively improved.
The above-mentioned embodiments are merely illustrative of the present patent, and do not limit the scope of the patent, and various modifications and improvements of the technical solutions of the patent will be made by those skilled in the art without departing from the spirit of the patent design, and the scope of the patent is defined by the claims.
Claims (10)
1. The SMA dangling vibration damping device for the building is characterized by comprising a fixed supporting device (100), wherein the fixed supporting device (100) is of a three-dimensional structure with five closed surfaces and one open surface and an internal cavity, a mass vibrator (200) is connected in the fixed supporting device (100) in a hanging mode, two wire-steel cable connecting devices are fixed on the periphery of the mass vibrator (200), and the wire-steel cable connecting devices (400) are symmetrically arranged on two sides in the fixed supporting device (100); each wire-steel cable connecting device penetrates out of the fixed supporting device (100) upwards to be connected with an external structure, a pair of symmetrically-arranged baffles (7) is fixed on a bottom plate of the fixed supporting device (100), a sliding rail is arranged between the two baffles (7), two sliding blocks (300) are arranged on the sliding rail, and the downward end of the wire-steel cable connecting device penetrates through the baffles (7) to be connected onto one sliding block (300).
2. An SMA pendulous damping device for a building according to claim 1, wherein: the wire-steel cable connecting device (400) comprises an SMA wire (12) and a steel cable (14), wherein the SMA wire (12) and the steel cable (14) are connected through a wire cable conversion head (13); one end of the SMA wire (12) far away from the wire cable conversion head (13) penetrates through the baffle (7) to be connected with the sliding block (300), and one end of the steel cable (14) far away from the wire cable conversion head (13) penetrates out of the fixed supporting device (100) to be connected with an external structure.
3. An SMA pendulum suspension damping device for a building as set forth in claim 2, wherein: the fixed supporting device (100) comprises an upper limiting plate (1), a lower limiting plate (2) and a three-side enclosure plate (3) which are arranged oppositely up and down; the upper limiting plate (1), the lower limiting plate (2) and the three-side enclosure plate (3) are spliced end to form a structure with five closed sides and an opening at one side and an internal cavity; the baffle (7) is fixed on the lower limit plate (2).
4. An SMA pendulum suspension damping device for a building as set forth in claim 3, wherein: the edge parts of two sides of the lower limiting plate (2) are also provided with bottom diverting pulleys (8), each bottom diverting pulley (8) is respectively positioned at the outer sides of the two baffles (7), and the SMA wires (12) are diverted through the bottom diverting pulleys (8) and then penetrate through the baffles to be fixedly connected with the sliding block (300).
5. An SMA pendulum suspension damping device for a building as set forth in claim 3, wherein: a unidirectional hinge (4) is vertically fixed in the middle of the upper limiting plate (1), and the mass oscillator (200) is connected with the unidirectional hinge (4) through a swing rod (11); the middle part of the rotating shaft of the unidirectional hinge (4) is smooth and has no thread, so that the free rotation of the swing rod (11) can be ensured.
6. An SMA pendulum suspension damping device for a building as set forth in claim 3, wherein: go up limiting plate (1) both sides edge symmetrical arrangement upper portion diverting pulley (6), cable wire (14) one end is worn out again after upper portion diverting pulley (6) and is gone up limiting plate (1) and link to each other with exterior structure, limiting plate four corners position sets up waist shape hole (9) down, links to each other with exterior structure through countersunk head bolt nut (17).
7. An SMA pendulum suspension damping device for a building as set forth in claim 3, wherein: the fixed supporting device (100) is further provided with a dust cover (500) outside, the three-sided enclosure plate (3) is formed by welding three steel plates, and the middle parts of the two vertical steel plates are provided with connecting buckles (10) connected with the dust cover (500).
8. An SMA pendulum suspension damping device for a building as set forth in claim 5, wherein: the upper part of the mass oscillator (200) is symmetrically provided with a plurality of threaded holes, and the lower end of the swing rod (11) is provided with threads matched with the threaded holes.
9. An SMA pendulum suspension damping device for a building as set forth in claim 5, wherein: two sides of the lower part of the mass oscillator (200) are provided with outward extending plates; and a rubber gasket layer (5) is arranged on the inner side of the overhanging plate.
10. An SMA pendulum suspension damping device for a building as set forth in claim 3, wherein: the dustproof dust hood (500) is arranged on one side of an opening of the fixed supporting device (100), the three-sided enclosure plate (3) is formed by welding three steel plates, and a connecting buckle (10) connected with the dust hood (500) is arranged in the middle of each steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921562357.3U CN211548160U (en) | 2019-09-19 | 2019-09-19 | SMA suspension pendulum damping device for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921562357.3U CN211548160U (en) | 2019-09-19 | 2019-09-19 | SMA suspension pendulum damping device for building |
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| Publication Number | Publication Date |
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| CN211548160U true CN211548160U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921562357.3U Active CN211548160U (en) | 2019-09-19 | 2019-09-19 | SMA suspension pendulum damping device for building |
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|---|---|
| CN (1) | CN211548160U (en) |
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- 2019-09-19 CN CN201921562357.3U patent/CN211548160U/en active Active
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