CN115370033A - Friction damper with integrated earthquake damage monitoring and friction damper monitoring system - Google Patents
Friction damper with integrated earthquake damage monitoring and friction damper monitoring system Download PDFInfo
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- CN115370033A CN115370033A CN202211162250.6A CN202211162250A CN115370033A CN 115370033 A CN115370033 A CN 115370033A CN 202211162250 A CN202211162250 A CN 202211162250A CN 115370033 A CN115370033 A CN 115370033A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 71
- 238000012806 monitoring device Methods 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000005265 energy consumption Methods 0.000 claims abstract description 10
- 239000013078 crystal Substances 0.000 claims description 44
- 238000004891 communication Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 6
- 230000036541 health Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 11
- 230000035939 shock Effects 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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Abstract
The invention discloses an earthquake damage monitoring integrated friction damper, which comprises a friction damper body, a friction damper strain monitoring assembly and a friction damper energy consumption monitoring assembly, wherein a strain monitoring device is arranged on the friction damper, so that the strain changes of a sliding main plate and a steel column in the working process of the friction damper body can be monitored in real time; the invention has simple structure and stable performance, realizes the purpose of integrating structural vibration control and health monitoring, has good engineering practicability and wide application prospect. The invention discloses a friction damper monitoring system which comprises the friction damper and realizes the combination of structural vibration control and health monitoring.
Description
Technical Field
The invention belongs to the technical field of civil engineering disaster prevention and reduction, relates to a shock absorption technology, and particularly relates to a friction damper integrating earthquake damage monitoring and a friction damper monitoring system.
Background
The structural shock absorption is one of the important points of civil engineering disaster prevention and reduction attention, and the installation of the damper is a reliable and effective energy consumption shock absorption technology. The technology mainly consumes earthquake energy by additionally arranging the damper at the key part of the structure, thereby reducing the damage of earthquake action to the main body of the structure and being an important means for lightening earthquake disasters. The friction damper is a common damper and is widely applied to energy dissipation and buffering, energy dissipation and shock absorption of bridges and building structures. Compared with other energy consumption devices, the friction damper has the advantages of simple structure, low cost and the like, can provide larger additional damping for the structure, is slightly influenced by load and frequency, and has wide application prospect.
The traditional structural health monitoring aims at monitoring structures in heavy projects and effectively evaluating the safety of the structures, does not carry out risk prevention and control on seismic isolation and reduction devices, and cannot meet the requirements of seismic fortification management regulations put forward under new backgrounds. Therefore, under the background of popularizing seismic isolation and reduction buildings, how to ensure that the functions of the seismic isolation and reduction device are not interrupted after the seismic isolation and reduction building is in a great deal, the safety of major engineering is ensured, a scheme capable of monitoring the seismic isolation and reduction device in real time is needed, real-time monitoring is carried out on the seismic isolation and reduction device, and the safety of the device is evaluated in time, so that the structural monitoring system and the structural damping are integrated into a whole, and the method has important engineering significance.
Disclosure of Invention
The invention aims to provide an earthquake damage monitoring integrated friction damper and a friction damper monitoring system, which realize the real-time monitoring function of a damping device by combining structural vibration control and health monitoring.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a vibration damage monitoring integrated friction damper, which comprises:
a friction damper body including a sliding main plate, a first sliding sub-plate, and a second sliding sub-plate; the first end of the sliding main board is provided with a first baffle, the second end of the sliding main board is provided with a sliding groove, and the sliding groove extends from the second end to the first end of the sliding main board; the first sliding auxiliary plate and the second sliding auxiliary plate are respectively positioned on two sides of the second end of the sliding main plate, the first sliding auxiliary plate, the sliding main plate and the second sliding auxiliary plate are connected through friction type bolts, the friction type bolts penetrate through the sliding grooves, and fastening pieces are arranged at two ends of each friction type bolt; one end of the first sliding auxiliary plate, which is far away from the first end of the sliding main plate, and one end of the second sliding auxiliary plate, which is far away from the first end of the sliding main plate, are connected to a second baffle plate;
the friction damper strain monitoring assembly comprises a first strain monitoring device, a second strain monitoring device, an elastic part and a steel column, wherein the steel column is arranged at the second end of the sliding main plate and the second baffle, and the steel column on the sliding main plate is connected with the steel column on the second baffle through the elastic part; the first strain monitoring device is arranged on any one steel column and can monitor the strain of the steel column when the friction damper works; the sliding main plate is provided with the second strain monitoring device, and the second strain monitoring device can monitor the strain of the sliding main plate when the friction damper works;
the friction damper energy consumption monitoring assembly comprises a piezoelectric crystal, the piezoelectric crystal is sleeved on the friction type bolt and is tightly pressed on the outer surface of the first sliding auxiliary plate and/or the second sliding auxiliary plate through the fastening piece, and the piezoelectric crystal can monitor the displacement of the friction type bolt in the sliding groove.
Optionally, the first sliding auxiliary plate, the sliding main plate and the second sliding auxiliary plate are connected through a plurality of friction type bolts, and all the friction type bolts are sequentially arranged along the extending direction of the sliding groove.
Optionally, the fastener is a fastening nut adapted to the friction type bolt.
Optionally, the piezoelectric crystals are sleeved at two ends of any one of the friction type bolts, and any one of the piezoelectric crystals is pressed on the outer surface of the first sliding subplate or the second sliding subplate through the fastening nut.
Optionally, a disk spring is arranged between any one of the fastening nuts and the piezoelectric crystal, and the piezoelectric crystal is pressed against the outer surface of the first sliding auxiliary plate or the outer surface of the second sliding auxiliary plate through the disk spring.
Optionally, the first strain monitoring device is a strain gauge or a grating; the second strain monitoring device is the strain gauge or the grating.
Optionally, the elastic member is a spring; and a circular ring is arranged on any one of the steel columns, and the end part of the spring is hooked on the circular ring through a hook.
Optionally, gaps between the first sliding auxiliary plate and the sliding main plate and between the second sliding auxiliary plate and the sliding main plate are larger than displacement of the sliding main plate during sliding.
The invention also provides a friction damper monitoring system, which comprises a control module and the integrated friction damper for monitoring the earthquake damage, wherein the first strain monitoring device, the second strain monitoring device and the piezoelectric crystal are in communication connection with the control module.
Optionally, the control module includes a data acquisition instrument, a switch and a remote server, the first strain monitoring device, the second strain monitoring device and the piezoelectric crystal are all in communication connection with the data acquisition instrument, two communication lines are connected between the data acquisition instrument and the switch, one of the two communication lines is provided with a fiber grating demodulator, and the other is provided with a data acquisition industrial control instrument; and the switch is in communication connection with the remote server.
Optionally, the control module, the first strain monitoring device, the second strain monitoring device, and the piezoelectric crystal are all configured with a renewable energy capacitor battery.
Compared with the prior art, the invention achieves the following technical effects:
according to the integrated friction damper for monitoring the earthquake damage, the strain monitoring device is arranged on the structural basis of the friction damper, so that the strain changes of the sliding main plate and the steel column in the working process of the friction damper body can be monitored in real time, the piezoelectric crystal is arranged on the outer side of the sliding auxiliary plate, the voltage signal in a circuit can be monitored in real time, the displacement of the friction type bolt in the friction damper body can be monitored in real time, the recorded data can be used for drawing the hysteresis curve of the friction damper in real time in a remote server such as a computer, the energy consumption condition of the damping device can be further known, and whether the device is damaged or not can be judged; the invention has simple structure and stable performance, realizes the purpose of integrating structural vibration control and health monitoring, has good engineering practicability and wide application prospect.
The friction damper monitoring system disclosed by the invention has the advantages that the piezoelectric crystal and the strain monitoring device can be connected to the data acquisition instrument through the data line, the data acquisition instrument enters different signal processing modules through the fiber grating demodulator and the data acquisition industrial control instrument according to different transmission signals, the processed signals can be transmitted to the switch for analysis, storage and transmission through the network cable, and finally the signals are transmitted to the remote server.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a longitudinal cross-sectional view of a shock monitoring integrated friction damper disclosed in an embodiment of the present invention;
FIG. 2 is a radial cross-sectional view of a shock monitoring integrated friction damper as disclosed in an embodiment of the present invention;
FIG. 3 is a top view of the integrated shock monitoring friction damper disclosed in the embodiments of the present invention;
FIG. 4 is a schematic diagram illustrating the connection of springs in the integrated shock monitoring friction damper according to the embodiment of the present invention;
FIG. 5 is a flow chart illustrating the monitoring of the friction damper monitoring system according to an embodiment of the present invention.
Wherein the reference numerals are:
the device comprises a friction type bolt 1, a disc spring 2, a piezoelectric crystal 3, a first sliding auxiliary plate 4, a second sliding auxiliary plate 5, a strain monitoring device 6, a strain gauge 61, a grating 62, a first baffle 71, a second baffle 72, a sliding main plate 8, a spring 9, a steel column 10, a sliding groove 11, a circular ring 12, a fastening nut 13, a data acquisition instrument 14, a data line 15, a fiber grating demodulator 16, a data acquisition industrial control instrument 17, a switch 18, a far-end server 19 and a network cable 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
One of the purposes of the invention is to provide an earthquake damage monitoring integrated friction damper, which combines structural vibration control and health monitoring to realize the real-time monitoring function of a damping device.
It is still another object of the present invention to provide a friction damper monitoring system having the above-described integrated earthquake damage monitoring friction damper.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1 to 4, the present embodiment provides an earthquake damage monitoring integrated friction damper, which mainly includes a friction damper body, a friction damper strain monitoring component and a friction damper energy consumption monitoring component, wherein the friction damper body includes a sliding main plate 8, a first sliding auxiliary plate 4 and a second sliding auxiliary plate 5; a first baffle 71 is disposed at a first end of the sliding main board 8 (as shown in fig. 1, the left end of the sliding main board 8) and a sliding slot 11 is disposed at a second end (as shown in fig. 1, the right end of the sliding main board 8) and the sliding slot 11 extends from the second end to the first end of the sliding main board 8, the sliding slot 11 is disposed in the board surface of the sliding main board 8 and does not involve a gap, and the sliding slot 11 is disposed at the second end of the sliding main board 8 (as shown in fig. 1, the second end of the sliding main board 8), specifically, the sliding slot 11 is close to the second end of the sliding main board 8 and far away from the first end of the sliding main board 8. The first sliding auxiliary plate 4 and the second sliding auxiliary plate 5 are respectively located on two sides of the second end of the sliding main plate 8, as shown in fig. 1, the first sliding auxiliary plate 4 is located above the sliding main plate 8, the second sliding auxiliary plate 5 is located below the sliding main plate 8, the first sliding auxiliary plate 4, the sliding main plate 8 and the second sliding auxiliary plate 5 form an upper-middle-lower three-layer structure, the first sliding auxiliary plate 4, the sliding main plate 8 and the second sliding auxiliary plate 5 are connected through a friction type bolt 1, the friction type bolt 1 penetrates through a sliding groove 11, two ends of the friction type bolt 1 respectively penetrate through the first sliding auxiliary plate 4 and the second sliding auxiliary plate 5, and fasteners are arranged at two ends of the friction type bolt 1 to achieve axial positioning of the first sliding auxiliary plate 4, the sliding main plate 8 and the second sliding auxiliary plate 5. The end of the first sliding sub-plate 4 away from the first end of the sliding main plate 8, i.e. the right end of the first sliding sub-plate 4, and the end of the second sliding sub-plate 5 away from the first end of the sliding main plate 8, i.e. the right end of the second sliding sub-plate 5, are connected to the same second baffle plate 72, and the first sliding sub-plate 4, the second sliding sub-plate 5 and the second baffle plate 72 are connected to form a T-shaped integral structure. The friction damper strain monitoring assembly comprises a first strain monitoring device, a second strain monitoring device, an elastic part and a steel column 10, the steel column 10 is arranged at the outer end of the right side of the sliding main plate 8 and on the second baffle 72, and the steel column 10 on the sliding main plate 8 is connected with the steel column 10 on the second baffle 72 through the elastic part; any one steel column 10 is provided with a first strain monitoring device, and the first strain monitoring device can monitor the strain of the steel column 10 when the friction damper works; a second strain monitoring device is arranged on the sliding main plate 8 and can monitor the strain of the sliding main plate 8 when the friction damper works; the first strain monitoring device and the second strain monitoring device are both strain monitoring devices 6. The friction damper energy consumption monitoring assembly comprises a piezoelectric crystal 3, the piezoelectric crystal 3 is sleeved on the friction type bolt 1 and is tightly pressed on the outer surface of the first sliding auxiliary plate 4 and/or the outer surface of the second sliding auxiliary plate 5 through a fastening piece, and the piezoelectric crystal 3 can monitor the displacement of the friction type bolt 1 in the sliding groove 11. The piezoelectric crystal 3 is pressed on the outer surface of the first sliding sub-plate 4 and/or the second sliding sub-plate 5 through a fastener, specifically: the outer surface of the first sliding sub-plate 4 is pressed with the piezoelectric crystal 3, or the outer surface of the second sliding sub-plate 5 is pressed with the piezoelectric crystal 3, or the outer surfaces of the first sliding sub-plate 4 and the second sliding sub-plate 5 are simultaneously pressed with the piezoelectric crystal 3. In the above structure, the first baffle 71 and the second baffle 72 are both provided with connecting holes for connecting with the member to be damped.
In this embodiment, the first sliding sub-plate 4, the sliding main plate 8 and the second sliding sub-plate 5 are preferably rectangular plates, and the sliding slot 11 is a slot and extends along the length direction of the sliding main plate 8. The first sliding auxiliary plate 4, the sliding main plate 8 and the second sliding auxiliary plate 5 are connected through a plurality of friction type bolts 1, and all the friction type bolts 1 are sequentially arranged along the length extending direction of the sliding groove 11. The width of the sliding groove 11 is slightly larger than the diameter of the friction bolt 1, so as to ensure that the friction bolt 1 can be clamped into the sliding groove 11.
In this embodiment, the fastening member mounted on the end of the friction bolt 1 is a fastening nut 13 fitted to the friction bolt 1, and the fastening nut 13 is screwed to the friction bolt 1.
In this embodiment, the piezoelectric crystals 3 are respectively sleeved at both ends of any one of the friction bolts 1, and any one of the piezoelectric crystals 3 is pressed on the outer surface of the first sliding sub-plate 4 or the second sliding sub-plate 5 through the fastening nut 13. Preferably, a disk spring 2 is provided between any one of the fastening nuts 13 and the piezoelectric crystal 3, and the piezoelectric crystal 3 is pressed against the outer surface of the first sliding sub-plate 4 or the second sliding sub-plate 5 by the disk spring 2. By arranging the disc spring 2 between the fastening nut 13 and the piezoelectric crystal 3, the friction type bolt 1 can be prevented from loosening and deforming in the sliding process of the sliding main plate 8. When the friction damper starts to work, the piezoelectric crystal 3 deforms, so that charged particles are relatively displaced, positive and negative bound charges appear on the surface of the crystal, potential difference is generated at two ends of a polar shaft of the piezoelectric crystal to form voltage, and the displacement of the friction type bolt 1 is monitored by monitoring the change of the voltage.
In this embodiment, the gap between the first sliding sub-plate 4, the second sliding sub-plate 5, and the sliding main plate 8 is larger than the displacement of the sliding main plate 8 when sliding.
In this embodiment, the first strain monitoring device and the second strain monitoring device may be a strain gauge 61 or a grating 62. Further, in actual operation, the first strain monitoring device and the second strain monitoring device are both strain gauges 61, or the first strain monitoring device and the second strain monitoring device are both optical gratings 62, or one of the first strain monitoring device and the second strain monitoring device adopts a strain gauge 61, and the other adopts an optical grating 6.
In this embodiment, two steel columns 10 are disposed in the gap between the first sliding sub-plate 4 and the second sliding sub-plate 5, one steel column 10 is connected to the sliding main plate 8, and the other steel column 10 is connected to the second baffle 72; and strain gauges 61 are arranged on the surfaces of the two steel columns 10. The elastic element connected between the two steel columns 10 is preferably a spring 9, a circular ring 12 is arranged on any one of the steel columns 10, the left end of the spring 9 is hooked on the circular ring 12 of the steel column 10 on the sliding main plate 8 through a hook, and the right end of the spring 9 is hooked on the circular ring 12 of the steel column 10 on the second baffle plate 72 through a hook. The strain gauge 61 is arranged on the steel column 10 to monitor the strain of the steel column 10 when the friction damper works, the output force of the spring 9 can be obtained by monitoring the strain of the steel column 10, and then the displacement of the spring 9 when the friction damper works is obtained.
In this embodiment, it is preferable that the strain monitoring device disposed on the sliding main board 8 is a grating 62, and the grating 62 is disposed on the sliding main board 8, so that the strain of the sliding main board 8 in the sliding process can be monitored.
The working principle of the above-described integrated shock monitoring friction damper is specifically described below by way of example in the case of arranging the damper in a coupled beam structure. Wherein, the grating 62 is arranged on the sliding main board 8, and the strain gauge 61 is arranged on the steel column 10.
The strain gauge 61, the grating 62 and any one of the piezoelectric crystals 3 are all connected to the data acquisition instrument 14 through the data line 15, wherein the data acquisition instrument 14 enters different signal processing modules through the fiber grating demodulator 16 and the data acquisition industrial control instrument 17 according to different transmission signals, the processed signals are transmitted to the switch 18 through the network cable 20 for analysis, storage and transmission, and finally the signals are transmitted to the remote server 19. The strain gauge 61, the grating 62 and the piezoelectric crystal 3 feed back real-time monitoring data to the remote server 19, and the energy consumption condition of the friction damper can be known through the generated hysteresis curve, so as to monitor whether the friction damper is damaged. The remote server 19 is preferably a computer.
Therefore, according to the friction damper integrated with earthquake damage monitoring, the strain monitoring device is arranged on the structural basis of the friction damper, the strain changes of the sliding main plate and the steel column in the working process of the friction damper body can be monitored in real time, the piezoelectric crystal is arranged on the outer side of the sliding auxiliary plate, the voltage signal in a circuit can be monitored in real time, the displacement of the friction type bolt in the friction damper body can be monitored in real time, the recorded data can be used for drawing the hysteresis curve of the friction damper in real time in a remote server such as a computer, the energy consumption condition of the damping device can be further known, and whether the device is damaged or not can be judged; this embodiment simple structure, stable performance have realized the purpose that structural vibration control and health monitoring combined together, realize that damping device has real-time supervision's function, and this friction damper of earthquake damage control integration can restore fast after having the shake, changes monitoring devices, and the repair cost is low, advantages such as engineering practicality is good have extensive application prospect.
Example two
The embodiment provides a friction damper monitoring system, which comprises a control module and a vibration damage monitoring integrated friction damper disclosed in the first embodiment, wherein a first strain monitoring device, a second strain monitoring device and a piezoelectric crystal 3 are all in communication connection with the control module. As a preferable scheme, as shown in fig. 4, the control module includes a data acquisition instrument 14, an exchanger 18 and a remote server 19, the first strain monitoring device, the second strain monitoring device and the piezoelectric crystal 3 are all in communication connection with the data acquisition instrument 14, two communication lines are connected between the data acquisition instrument 14 and the exchanger 18, one of the two communication lines is provided with a fiber grating demodulator 16, and the other is provided with a data acquisition industrial controller 17; the switch 18 is communicatively connected to a remote server 19. In order to realize the long-term function of the monitoring device, renewable energy capacitive batteries can be configured on the control module, the first strain monitoring device, the second strain monitoring device and the piezoelectric crystal 3.
Therefore, the friction damper monitoring system that this embodiment provided, data acquisition device has included the data acquisition instrument, the data line, the switch, distal end server and net twine, can real-time supervision friction damper's meeting an emergency and displacement, displacement through piezoelectric crystal monitoring bolt, can record the meeting an emergency of slip mainboard and steel column through foil gage or grating, through measuring the meeting an emergency of steel column, and then convert out the power that the spring provided, under the known condition of spring rigidity, can monitor the spring displacement, the meeting an emergency and the displacement of control obtain the hysteresis curve through the computer, find damping device's power consumption through the hysteresis curve, judge whether damping device damages. The friction damper monitoring system is simple in structure and stable in performance, achieves the purpose of combining structural vibration control and health monitoring, achieves the function that the damping device has real-time monitoring, has the advantages that the damping device can be quickly repaired after an earthquake, the monitoring device is replaced, the repairing cost is low, the engineering practicability is good, and the like, and has wide application prospects.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An earthquake damage monitoring integrated friction damper, comprising:
a friction damper body including a sliding main plate, a first sliding sub-plate, and a second sliding sub-plate; the first end of the sliding main board is provided with a first baffle, the second end of the sliding main board is provided with a sliding groove, and the sliding groove extends from the second end to the first end of the sliding main board; the first sliding auxiliary plate and the second sliding auxiliary plate are respectively positioned on two sides of the second end of the sliding main plate, the first sliding auxiliary plate, the sliding main plate and the second sliding auxiliary plate are connected through friction type bolts, the friction type bolts penetrate through the sliding grooves, and fastening pieces are arranged at two ends of each friction type bolt; one end of the first sliding auxiliary plate, which is far away from the first end of the sliding main plate, and one end of the second sliding auxiliary plate, which is far away from the first end of the sliding main plate, are connected to the second baffle plate;
the friction damper strain monitoring assembly comprises a first strain monitoring device, a second strain monitoring device, an elastic part and a steel column, wherein the steel column is arranged at the second end of the sliding main plate and the second baffle, and the steel column on the sliding main plate is connected with the steel column on the second baffle through the elastic part; the first strain monitoring device is arranged on any one steel column and can monitor the strain of the steel column when the friction damper works; the sliding main plate is provided with the second strain monitoring device, and the second strain monitoring device can monitor the strain of the sliding main plate when the friction damper works;
the friction damper energy consumption monitoring assembly comprises a piezoelectric crystal, the piezoelectric crystal is sleeved on the friction type bolt and is tightly pressed on the outer surface of the first sliding auxiliary plate and/or the second sliding auxiliary plate through the fastening piece, and the piezoelectric crystal can monitor the displacement of the friction type bolt in the sliding groove.
2. The earthquake damage monitoring integrated friction damper as claimed in claim 1, wherein the first sliding auxiliary plate, the sliding main plate and the second sliding auxiliary plate are connected by a plurality of the friction type bolts, and all the friction type bolts are arranged in sequence along the extending direction of the sliding chute.
3. The integrated earthquake damage monitoring friction damper as claimed in claim 1 or 2, wherein the fastening member is a fastening nut adapted to the friction type bolt.
4. The earthquake damage monitoring integrated friction damper as claimed in claim 3, wherein the piezoelectric crystal is sleeved at both ends of any one of the friction type bolts, and any one of the piezoelectric crystals is pressed on the outer surface of the first sliding auxiliary plate or the second sliding auxiliary plate through the fastening nut.
5. The earthquake damage monitoring integrated friction damper as claimed in claim 4, wherein a disc spring is arranged between any one of the fastening nuts and the piezoelectric crystal, and the piezoelectric crystal is pressed against the outer surface of the first sliding auxiliary plate or the second sliding auxiliary plate through the disc spring.
6. The integrated earthquake damage monitoring friction damper as claimed in claim 1 or 2, wherein the first strain monitoring device is a strain gauge or a grating; the second strain monitoring device is the strain gauge or the grating.
7. The integrated earthquake damage monitoring friction damper as claimed in claim 1 or 2, wherein the elastic member is a spring; and a circular ring is arranged on any one of the steel columns, and the end part of the spring is hooked on the circular ring through a hook.
8. The integrated earthquake damage monitoring friction damper as claimed in claim 1 or 2, wherein the clearance between the first sliding sub plate, the second sliding sub plate and the sliding main plate is larger than the displacement of the sliding main plate when sliding.
9. A friction damper monitoring system comprising a control module and an earthquake damage monitoring integrated friction damper as claimed in any one of claims 1 to 8, wherein said first strain monitoring device, said second strain monitoring device and said piezoelectric crystal are all in communication connection with said control module.
10. The friction damper monitoring system according to claim 9, wherein the control module comprises a data acquisition instrument, a switch and a remote server, the first strain monitoring device, the second strain monitoring device and the piezoelectric crystal are all in communication connection with the data acquisition instrument, two communication lines are connected between the data acquisition instrument and the switch, and one of the two communication lines is provided with a fiber grating demodulator, and the other is provided with a data acquisition industrial control instrument; and the switch is in communication connection with the remote server.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117761759A (en) * | 2024-02-22 | 2024-03-26 | 北京赛福思创减震科技股份公司 | Earthquake response monitoring system of earthquake reduction and isolation building |
| CN117761759B (en) * | 2024-02-22 | 2024-05-07 | 北京赛福思创减震科技股份公司 | Earthquake response monitoring system of earthquake reduction and isolation building |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007118441A2 (en) * | 2006-04-13 | 2007-10-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Assembly for damping vibrations on a wheel used for driving a secondary unit of a vehicle |
| JP3147013U (en) * | 2008-09-29 | 2008-12-11 | 大成建設株式会社 | Composite vibration brace |
| CN101344478A (en) * | 2008-08-15 | 2009-01-14 | 中国科学院上海光学精密机械研究所 | Metallic material corrosion optical fiber grating sensing head |
| KR20150034388A (en) * | 2013-09-26 | 2015-04-03 | 서울시립대학교 산학협력단 | Cylindrical vibration control device having hysteretic damper and friction damper |
| CN105526304A (en) * | 2015-12-02 | 2016-04-27 | 西北工业大学 | Elastic support dry-friction damper with intelligent structure |
| CN108801168A (en) * | 2018-06-12 | 2018-11-13 | 申家海 | A kind of slope deforming monitoring and prior-warning device automatically |
| CN110206224A (en) * | 2019-06-20 | 2019-09-06 | 大连理工大学 | The bending steel truss coupling beam of fast quick-recovery after a kind of shake with frcition damper |
| CN210105434U (en) * | 2019-04-01 | 2020-02-21 | 上海史狄尔建筑减震科技有限公司 | Intelligent friction damper capable of monitoring pre-pressure change |
| CN114908895A (en) * | 2022-07-07 | 2022-08-16 | 北京赛福思创减震科技股份公司 | High-damping rubber friction damper |
-
2022
- 2022-09-23 CN CN202211162250.6A patent/CN115370033B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007118441A2 (en) * | 2006-04-13 | 2007-10-25 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Assembly for damping vibrations on a wheel used for driving a secondary unit of a vehicle |
| CN101344478A (en) * | 2008-08-15 | 2009-01-14 | 中国科学院上海光学精密机械研究所 | Metallic material corrosion optical fiber grating sensing head |
| JP3147013U (en) * | 2008-09-29 | 2008-12-11 | 大成建設株式会社 | Composite vibration brace |
| KR20150034388A (en) * | 2013-09-26 | 2015-04-03 | 서울시립대학교 산학협력단 | Cylindrical vibration control device having hysteretic damper and friction damper |
| CN105526304A (en) * | 2015-12-02 | 2016-04-27 | 西北工业大学 | Elastic support dry-friction damper with intelligent structure |
| CN108801168A (en) * | 2018-06-12 | 2018-11-13 | 申家海 | A kind of slope deforming monitoring and prior-warning device automatically |
| CN210105434U (en) * | 2019-04-01 | 2020-02-21 | 上海史狄尔建筑减震科技有限公司 | Intelligent friction damper capable of monitoring pre-pressure change |
| CN110206224A (en) * | 2019-06-20 | 2019-09-06 | 大连理工大学 | The bending steel truss coupling beam of fast quick-recovery after a kind of shake with frcition damper |
| CN114908895A (en) * | 2022-07-07 | 2022-08-16 | 北京赛福思创减震科技股份公司 | High-damping rubber friction damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117761759A (en) * | 2024-02-22 | 2024-03-26 | 北京赛福思创减震科技股份公司 | Earthquake response monitoring system of earthquake reduction and isolation building |
| CN117761759B (en) * | 2024-02-22 | 2024-05-07 | 北京赛福思创减震科技股份公司 | Earthquake response monitoring system of earthquake reduction and isolation building |
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