CN115506230A - Monitoring integrated friction pendulum vibration isolation support based on piezoelectric crystal - Google Patents
Monitoring integrated friction pendulum vibration isolation support based on piezoelectric crystal Download PDFInfo
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- CN115506230A CN115506230A CN202211162338.8A CN202211162338A CN115506230A CN 115506230 A CN115506230 A CN 115506230A CN 202211162338 A CN202211162338 A CN 202211162338A CN 115506230 A CN115506230 A CN 115506230A
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- 239000013078 crystal Substances 0.000 title claims abstract description 58
- 238000002955 isolation Methods 0.000 title claims abstract description 51
- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004092 self-diagnosis Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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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
- E04B1/36—Bearings or like supports allowing movement
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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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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a monitoring integrated friction pendulum vibration isolation support based on a piezoelectric crystal, which relates to the technical field of civil engineering vibration isolation and comprises an upper seat plate and a lower seat plate, wherein an installation space is formed between the upper seat plate and the lower seat plate, and a slider mechanism is installed in the installation space; strain gauge position gauges are arranged between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate and used for measuring relative displacement between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate; and the sliding block mechanism is also provided with a piezoelectric crystal dynamometer, and the piezoelectric crystal dynamometer is used for measuring the horizontal shearing force and the vertical pressure applied to the monitoring integrated friction pendulum seismic isolation support based on the piezoelectric crystal. The invention can monitor the horizontal shearing force, the vertical pressure and the horizontal displacement of the friction pendulum seismic isolation support in real time, thereby judging the use condition of the friction pendulum seismic isolation support.
Description
Technical Field
The invention relates to the technical field of civil engineering shock insulation, in particular to a monitoring integrated friction pendulum shock insulation support based on a piezoelectric crystal.
Background
In order to improve the earthquake resistance and disaster prevention capability of construction projects, reduce earthquake disaster risks and guarantee the life and property safety of people, new earthquake resistance requirements are provided for construction projects; in order to reduce the loss of major projects when an earthquake occurs, secondary disasters caused by construction projects when the earthquake occurs and improve the recoverability of the building functions, at present, a construction unit usually adopts an earthquake reduction and isolation technology to improve the earthquake resistance of a building structure.
The seismic isolation and reduction technology is mainly applied to the field of civil construction by utilizing the characteristics that the seismic isolation and reduction device can improve the safety and reduce the structural damage when encountering an earthquake. The friction pendulum subtracts isolation bearing is the vibration isolation device that subtracts of present stage mainstream, and its structural principle does: the requirement of the normal function of the bridge is met, meanwhile, the structure period of mutual sliding delay between the friction pendulum surfaces similar to the pendulum principle is adopted, the shock insulation effect is achieved, and meanwhile, the shock absorption effect is achieved through friction energy dissipation between the pendulum surfaces. The data acquisition system is a signal processing system which is common at present, the response under the action of a structural earthquake is obtained by acquiring signal data, and the structural safety is evaluated by a remote evaluation module through comparison with a database.
The shock insulation device is used as a main force transmission component, and the failure of the shock insulation device can cause the failure of the whole function of the building and cause immeasurable serious consequences; therefore, the long-term stability of the performance of the seismic isolation device is of great significance to the overall safety of the building. At present, however, no device capable of monitoring the health condition of the support in real time or a vibration isolation device with the functions of monitoring pressure, support displacement and horizontal shear force exists.
Disclosure of Invention
The invention aims to provide a monitoring integrated friction pendulum vibration isolation support based on a piezoelectric crystal, which is used for solving the problems in the prior art and can monitor the horizontal shearing force, the vertical pressure and the horizontal displacement of the friction pendulum vibration isolation support in real time so as to judge the use condition of the friction pendulum vibration isolation support.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a monitoring integrated friction pendulum vibration isolation support based on a piezoelectric crystal, which comprises an upper seat plate and a lower seat plate, wherein an installation space is formed between the upper seat plate and the lower seat plate, and a slide block mechanism is installed in the installation space; strain gauge position gauges are arranged between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate and used for measuring relative displacement between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate; and the sliding block mechanism is also provided with a piezoelectric crystal dynamometer, and the piezoelectric crystal dynamometer is used for measuring the horizontal shearing force and the vertical pressure applied to the monitoring integrated friction pendulum seismic isolation support based on the piezoelectric crystal.
Preferably, the sliding block mechanism comprises an upper sliding block and a lower sliding block which are arranged from top to bottom, and the bottom of the upper sliding block is arranged on the lower sliding block; the top of the upper sliding block is attached to the lower surface of the upper base plate, the bottom of the lower sliding block is attached to the upper surface of the lower base plate, and the strain gauge position finder is arranged between the upper sliding block and the upper base plate and between the lower sliding block and the lower base plate.
Preferably, a first friction plate is fixedly attached to the top of the upper sliding block and the bottom of the lower sliding block, and a second friction plate is fixedly attached to the lower surface of the upper seat plate and the upper surface of the lower seat plate; the first friction plate at the top of the upper sliding block is attached to the second friction plate on the lower surface of the upper seat plate, and the first friction plate at the bottom of the lower sliding block is attached to the second friction plate on the upper surface of the lower seat plate.
Preferably, the first friction plate is a teflon plate, and the second friction plate is a stainless steel plate.
Preferably, the polytetrafluoroethylene plate is adhered or embedded and fixed on the upper sliding block or the lower sliding block through a countersunk head bolt, and the stainless steel plate is welded on the upper seat plate or the lower seat plate.
Preferably, the strain gauge position finder comprises a strain gauge, an elastic element and a strain column;
a first end of an elastic element of the strain gauge position finder between the upper slide block and the upper seat plate is fixed on the upper slide block, a second end of the elastic element is connected with a first end of the strain column, a second end of the strain column is fixed on the upper seat plate, the strain gauge is installed on the strain column, and the strain gauge can measure the strain of the strain column;
the first end of an elastic element of the strain gauge position finder between the lower sliding block and the lower seat plate is fixed on the lower sliding block, the second end of the elastic element is connected with the first end of the strain column, the second end of the strain column is fixed on the lower seat plate, the strain gauge is installed on the strain column, and the strain gauge can measure the strain of the strain column.
Preferably, the elastic element is a spring, and the strain column is a cylinder.
Preferably, a protrusion is arranged at the bottom of the upper sliding block, a groove matched with the protrusion is arranged at the top of the lower sliding block, the protrusion is inserted into the groove to realize the connection between the upper sliding block and the lower sliding block, and the height of the protrusion is greater than that of the groove; and the piezoelectric crystal dynamometer is arranged between the outer surface of the bulge and the groove.
Preferably, the piezoelectric crystal dynamometer includes a plurality of uniformly distributed piezoelectric particles, and the connection is made between adjacent piezoelectric particles.
Preferably, the piezoelectric crystal dynamometer and the strain gauge position finder are both connected with a data acquisition industrial control instrument, and the data acquisition industrial control instrument is further connected with a far-end server.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, a strain gauge position finder and a piezoelectric crystal dynamometer are added on the basis of a common friction pendulum vibration isolation support, the strain gauge position finder can be used for monitoring the relative displacement between a slider mechanism and an upper seat plate and between the slider mechanism and a lower seat plate, and the piezoelectric crystal dynamometer can be used for measuring the horizontal shear force and the vertical pressure borne by the monitoring integrated friction pendulum vibration isolation support based on the piezoelectric crystal, so that the use condition of the friction pendulum vibration isolation support can be judged, and the real-time monitoring effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and 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 to obtain other drawings without creative efforts.
FIG. 1 is a front view of a monitoring integrated friction pendulum seismic isolation bearing based on a piezoelectric crystal in the embodiment of the invention;
FIG. 2 is a longitudinal sectional view of the contact position between the upper seat plate, the upper slider, the lower slider, and the lower seat plate in FIG. 1;
FIG. 3 is a side view of a monitoring integrated friction pendulum seismic isolation support based on a piezoelectric crystal in the embodiment of the invention;
FIG. 4 is a longitudinal sectional view of the contact position between the upper seat plate, the upper slider, the lower slider, and the lower seat plate of FIG. 3;
FIG. 5 is a schematic diagram of a process for evaluating structural security according to an embodiment of the present invention;
FIG. 6 is a diagram of a concrete embodiment of a monitoring integrated friction pendulum seismic isolation bearing based on a piezoelectric crystal in a building in the embodiment of the invention;
description of the reference numerals: 100. the monitoring integrated friction pendulum vibration isolation support is based on a piezoelectric crystal; 1. a lower seat plate; 2. a stainless steel plate; 3. a polytetrafluoroethylene sheet; 4. a lower slider; 5. an upper slide block; 6. an upper seat plate; 7. a spring; 8. a cylinder; 9. a piezoelectric crystal dynamometer; 10. a strain gauge; 11. data acquisition industrial control appearance.
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.
The invention aims to provide a monitoring integrated friction pendulum vibration isolation support based on a piezoelectric crystal, which is used for solving the problems in the prior art and can monitor the horizontal shearing force, the vertical pressure and the horizontal displacement of the friction pendulum vibration isolation support in real time so as to judge the use condition of the friction pendulum vibration isolation support.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Example one
As shown in fig. 1 to 6, the embodiment provides a monitoring integrated friction pendulum seismic isolation bearing 100 based on a piezoelectric crystal, which includes an upper seat plate 6 and a lower seat plate 1, wherein an installation space is formed between the upper seat plate 6 and the lower seat plate 1, and a slider mechanism is installed in the installation space; strain gauge position detectors are arranged between the slider mechanism and the upper seat plate 6 and between the slider mechanism and the lower seat plate 1, and relative displacement between the slider mechanism and the upper seat plate 6 as well as between the slider mechanism and the lower seat plate 1 can be measured through the arranged strain gauge position detectors; and a piezoelectric crystal dynamometer 9 is further installed on the sliding block mechanism, and the piezoelectric crystal dynamometer 9 is used for measuring the horizontal shearing force and the vertical pressure applied to the monitoring integrated friction pendulum seismic isolation support based on the piezoelectric crystal.
Further, it should be noted that the upper seat plate 6 and the lower seat plate 1 are mature technologies in the field, and can be selected according to specific work requirements; the lower surface of the upper seat plate 6 is provided with a curved surface, the top of the sliding block mechanism is provided with a curved surface, and the curved surface is attached to the lower surface of the upper seat plate 6, namely the curved surface and the lower surface have the same curvature radius; similarly, the upper surface of the lower seat plate 1 is provided with a curved surface, and the bottom of the slide block mechanism is provided with a curved surface and is attached to the upper surface of the lower seat plate 1; the curved surface is preferably a spherical curved surface, and the spherical curved surface is only a part of the whole sphere.
In the embodiment, the strain gauge position finder can monitor the relative displacement between the sliding block mechanism and the upper seat plate 6 and between the sliding block mechanism and the lower seat plate 1, and the piezoelectric crystal dynamometer 9 can measure the horizontal shearing force and the vertical pressure applied to the friction pendulum seismic isolation support, so that the use condition of the friction pendulum seismic isolation support can be judged, and the real-time monitoring effect is achieved; furthermore, according to the monitoring result, the damage condition of the structure can be quickly obtained by comparing the monitoring result with the result of the existing test data, the self-diagnosis of the device is realized, and the repair scheme is judged according to the self-diagnosis, so that the effect of intelligent monitoring is achieved, and the real-time monitoring of the earthquake center before earthquake can be realized.
In this embodiment, slider mechanism includes top slide 5 and the lower slider 4 that from top to bottom sets up, and the bottom of top slide 5 is installed on lower slider 4, and the top of top slide 5 and the lower surface laminating of last bedplate 6, the bottom of lower slider 4 and the upper surface laminating of bedplate 1 down.
First friction plates are fixedly attached to the top of the upper sliding block 5 and the bottom of the lower sliding block 4, and second attached friction plates are fixedly embedded into the lower surface of the upper seat plate 6 and the upper surface of the lower seat plate 1; the first friction plate at the top of the upper sliding block 5 is attached to the second friction plate at the lower surface of the upper seat plate 6, and the first friction plate at the bottom of the lower sliding block 4 is attached to the second friction plate at the upper surface of the lower seat plate 1.
In the embodiment, the first friction plate is preferably a polytetrafluoroethylene plate 3, and the second friction plate is preferably a stainless steel plate 2, so that the wear resistance can be improved; and the stainless steel plate 2 and the polytetrafluoroethylene plate 3 have lower friction coefficient, and can ensure that the upper seat plate 6 and the upper sliding block 5 and the lower seat plate 1 and the lower sliding block 4 can slide relatively. Wherein, stainless steel plate 2 welds on upper seat board 6 or lower bedplate 1, and polytetrafluoroethylene board 3 pastes or fixes on upper sliding block 5 or lower sliding block 4 through countersunk head bolt embedding, or can also adopt other connected mode according to the work needs.
In the present embodiment, as shown in fig. 3 and 4, the gauge of the strain gauge mainly comprises a strain gauge 10, an elastic element, and a strain column, wherein the elastic element is preferably a spring 7, the strain column is preferably a cylinder 8, and the material of the strain column is selected according to specific requirements; the strain gauge 10 is adhered to the cylinder 8, the cylinder 8 is fixed on a stop block of the upper seat plate 6 or the lower seat plate 1, the spring 7 is fixed on the upper sliding block 5 or the lower sliding block 4, the upper sliding block 5 and the lower sliding block 4 move to drive the spring 7 to deform, the deformation of the spring 7 is transmitted to the cylinder 8 in real time, the stress F = A epsilon E of the spring is solved according to the known cross-sectional area A and the elastic modulus E of the cylinder 8 and the strain epsilon of the strain gauge 10 on the cylinder 8, and then according to the spring stiffness k, a formula is utilized:
and (5) calculating the displacement d of the friction pendulum vibration isolation device.
In this embodiment, the bottom of the upper slider 5 is provided with a protrusion, the top of the lower slider 4 is provided with a groove matched with the protrusion, the protrusion is inserted into the groove to realize the connection between the upper slider 5 and the lower slider 4, and the height of the protrusion is greater than that of the groove, so as to ensure that the protrusion of the upper slider 5 can contact the bottom of the groove of the lower slider 4 to generate vertical stress; the bulge is a rectangular bulge, the groove is a rectangular groove correspondingly, and a piezoelectric crystal dynamometer 9 is arranged between the outer surface (four side surfaces and the bottom surface) of the bulge and the groove.
In this embodiment, the piezoelectric crystal dynamometer 9 includes a plurality of pressure particles, all of which are uniformly distributed and interconnected to constitute the piezoelectric crystal dynamometer 9, and stress can be directly transmitted between the piezoelectric particles without passing through a flexible substrate, so that the piezoelectric crystal dynamometer has a larger stress transmission capability and can generate higher output under external mechanical stimulation. When the pressure particle is acted by external force along a certain direction, the inside of the pressure particle generates polarization phenomenon, so that charged particles generate relative displacement, and charges with equal magnitude and opposite signs are generated on the surface of the crystal; when the external force is removed, the state of the battery is restored to the uncharged state. The electric charge quantity generated by the piezoelectric crystal under stress is in direct proportion to the external force, the electric charge quantity is monitored in real time, and the stress of the vibration isolation support of the friction pendulum can be determined.
In the present embodiment, as shown in fig. 5, the piezoelectric crystal dynamometer 9 and the strain gauge position finder are both connected to the data acquisition industrial control instrument 11, and the data acquisition industrial control instrument 11 is further connected to a remote server; specifically, data acquisition industrial control appearance 11 and foil gage position finder, piezoelectric crystal dynamometer 9 all passes through the net twine connection, the net twine receives in real time and transmits piezoelectric crystal dynamometer 9's power and foil gage 10's displacement data signal, transmit and utilize renewable energy electric capacity battery for data acquisition industrial control appearance 11, provide long-term energy supply, realize carrying out real-time supervision to foil gage position finder, piezoelectric crystal dynamometer 9's data, it handles data to recycle the far-end server, carry out the security aassessment to friction pendulum shock insulation support again at last.
As shown in fig. 6, the monitoring integrated friction pendulum seismic isolation bearing 100 based on piezoelectric crystal in this embodiment may be placed at the lower part of a building structure to reduce the influence of earthquake on the building.
In conclusion, the invention can monitor the stress and displacement conditions of the friction pendulum seismic isolation support in real time, thereby judging the use condition of the friction pendulum seismic isolation support; and the early warning function can be realized through the post-processing of the monitoring data, namely when the stress or displacement of the friction pendulum seismic isolation support exceeds an allowable value, the stress or displacement can be monitored in real time, the collapse of a building is avoided, and tragedy is avoided. Furthermore, the piezoelectric crystal dynamometer and the strain gauge position finder are easy to replace, can be replaced in time and are convenient to assemble.
The monitoring integrated friction pendulum seismic isolation support based on the piezoelectric crystal is simple in structure, low in cost and wide in application, and can be quickly repaired after the shock.
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 to be construed as limiting the claims.
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. A monitoring integrated friction pendulum vibration isolation support based on a piezoelectric crystal comprises an upper seat plate and a lower seat plate, wherein an installation space is formed between the upper seat plate and the lower seat plate, and a sliding block mechanism is installed in the installation space; the method is characterized in that: strain gauge position gauges are arranged between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate and used for measuring relative displacement between the slider mechanism and the upper seat plate and between the slider mechanism and the lower seat plate; and the sliding block mechanism is also provided with a piezoelectric crystal dynamometer, and the piezoelectric crystal dynamometer is used for measuring the horizontal shearing force and the vertical pressure applied to the monitoring integrated friction pendulum seismic isolation support based on the piezoelectric crystal.
2. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 1, wherein: the sliding block mechanism comprises an upper sliding block and a lower sliding block which are arranged from top to bottom, and the bottom of the upper sliding block is arranged on the lower sliding block; the top of the upper sliding block is attached to the lower surface of the upper seat plate, the bottom of the lower sliding block is attached to the upper surface of the lower seat plate, and the strain gauge position gauges are arranged between the upper sliding block and the upper seat plate and between the lower sliding block and the lower seat plate.
3. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 2, characterized in that: a first friction plate is fixedly attached to the top of the upper sliding block and the bottom of the lower sliding block, and a second friction plate is fixedly attached to the lower surface of the upper seat plate and the upper surface of the lower seat plate; the first friction plate at the top of the upper sliding block is attached to the second friction plate on the lower surface of the upper seat plate, and the first friction plate at the bottom of the lower sliding block is attached to the second friction plate on the upper surface of the lower seat plate.
4. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 3, wherein: the first friction plate is a polytetrafluoroethylene plate, and the second friction plate is a stainless steel plate.
5. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 4, wherein: the polytetrafluoroethylene plate is adhered or embedded and fixed on the upper sliding block or the lower sliding block through a countersunk head bolt, and the stainless steel plate is welded on the upper base plate or the lower base plate.
6. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 3 or 4, wherein: the strain gauge position finder comprises a strain gauge, an elastic element and a strain column;
a first end of an elastic element of the strain gauge position finder between the upper slide block and the upper seat plate is fixed on the upper slide block, a second end of the elastic element is connected with a first end of the strain column, a second end of the strain column is fixed on the upper seat plate, the strain gauge is installed on the strain column, and the strain gauge can measure the strain of the strain column;
the first end of an elastic element of the strain gauge position finder between the lower sliding block and the lower seat plate is fixed on the lower sliding block, the second end of the elastic element is connected with the first end of the strain column, the second end of the strain column is fixed on the lower seat plate, the strain gauge is installed on the strain column, and the strain gauge can measure the strain of the strain column.
7. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 6, wherein: the elastic element is a spring, and the strain column is a cylinder.
8. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 2, wherein: the bottom of the upper sliding block is provided with a bulge, the top of the lower sliding block is provided with a groove matched with the bulge, the bulge is inserted into the groove to realize the connection of the upper sliding block and the lower sliding block, and the height of the bulge is greater than that of the groove; and the piezoelectric crystal dynamometer is arranged between the outer surface of the bulge and the groove.
9. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 8, wherein: the piezoelectric crystal dynamometer comprises a plurality of uniformly distributed piezoelectric particles, and the piezoelectric particles are connected with each other.
10. The monitoring integrated friction pendulum seismic isolation bearing based on the piezoelectric crystal as claimed in claim 1, wherein: the piezoelectric crystal dynamometer and the strain gauge position finder are both connected with a data acquisition industrial control instrument, and the data acquisition industrial control instrument is further connected with a far-end server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211162338.8A CN115506230A (en) | 2022-09-23 | 2022-09-23 | Monitoring integrated friction pendulum vibration isolation support based on piezoelectric crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211162338.8A CN115506230A (en) | 2022-09-23 | 2022-09-23 | Monitoring integrated friction pendulum vibration isolation support based on piezoelectric crystal |
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| Publication Number | Publication Date |
|---|---|
| CN115506230A true CN115506230A (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211162338.8A Pending CN115506230A (en) | 2022-09-23 | 2022-09-23 | Monitoring integrated friction pendulum vibration isolation support based on piezoelectric crystal |
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| Country | Link |
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| CN (1) | CN115506230A (en) |
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- 2022-09-23 CN CN202211162338.8A patent/CN115506230A/en active Pending
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