CN109837993A - A kind of the friction pendulum seismic isolation device and control method of Electromagnetic Control - Google Patents
A kind of the friction pendulum seismic isolation device and control method of Electromagnetic Control Download PDFInfo
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Abstract
A kind of the friction pendulum seismic isolation device and control method of Electromagnetic Control, including horizontal seismic isolation unit, vertical earthquake isolating unit.Horizontal seismic isolation unit has the lower part cover board of conventional friction pendulum support to connect with lower prop, lower prop is connected with basis, friction pendulum top cover board is connected with upper prop, vertical earthquake isolating unit is embedded to electromagnet in the upper lower prop of connection friction pendulum upper and lower covers pendulum, it is connected with control system simultaneously, the coil in electromagnet is connected by conducting wire with control system.According to the feedback information of displacement sensor in control system and pressure sensor, computer capacity gives electromagnet to control accordingly automatically, electromagnet is by the way that attracting or repelling each other resets its structure after geological process, improve its breakout capacity, weaken toppling or even collapsing for building, also greatly reduce sliding block to the impact wreckage of stop collar, solve the variability of coefficient of friction, residual displacement in existing friction pendulum.Can significantly more efficient earthquake energy, keep the stabilization of superstructure safer.
Description
Technical field
The present invention relates to earthquakes to subtract seismic isolation technology.
Background technique
Earthquake is a kind of natural calamity with extremely strong destructive power, according to statistics, annual on the earth about to occur more than 500 ten thousand times
Shake, seismic energy cause a large amount of casualties and collapsing for building that can all cause huge damage to the life and property of the mankind
It loses.But current scientific and technological level is not possible to the arrival of prediction earthquake, we can only take some measures, for example installation subtracts shock insulation dress
It sets, the harm that earthquake generates is reduced to minimum as far as possible.
Subtracting shock insulation is to reduce or be isolated the influence generated due to by geological process to building.Shockproof control is exactly to pass through
Certain structural establishment is configured in the privileged site of structure to change the dynamic characteristics of structure, and dissipation enters into structural system
Seismic energy.Shock insulation exactly separates structure and seismic stimulation, the basic principle is that in foundation structure and superstructure
Between be arranged Seismic Isolation of Isolation Layer and using earthquake isolating equipment energy dissipation capacity consumption Seismic input energy, reduce the earthquake response of structure,
It is effective to ensure superstructure and human life's property safety.The more shock isolating pedestal of application is mainly laminated rubber branch at this stage
Seat and friction pendulum support.
In recent years, with the development of civil engineering, derive and much subtract the methods of shock insulation, wherein friction pendulum every
Shaking support is the friction pendulum shock isolating pedestal researched and developed by earthquake protection system house, the U.S. the 1980s, friction-pendulum shock-insulation branch
Seat isolation energy dissipation cardinal principle be using sliding surface design come the vibration period of extending structure with significantly reduce structure because
By enlarge-effect caused by geological process in addition, rubbing between friction-pendulum shock-insulation support sliding surface and sliding block can also be utilized
It wipes to achieve the purpose that earthquake energy, reduce Seismic input but as friction-pendulum shock-insulation support product comes into operation, closes
Have in some problems of product also with the problem of being exposed, reflect from actual use process: (1) vertical when occurring
When vertically motivating larger suffered by earthquake or structure, fabric structure can have certain pull out force vertically upward relative to ground, because
This causes toppling or even collapsing for building.(2) friction pendulum is consumed by sliding friction of the sliding block in its slideway or sliding surface
To consume a part of seismic energy.From it was found that, coefficient of friction and sliding velocity between sliding block and slideway, temperature and
The factors such as top gravity are related, and in friction pendulum work, the variability of coefficient of friction reduces the validity of friction pendulum.(3) work as hair
When raw geological process, the presence of friction pendulum residual displacement, seismic stimulation are smaller or when upper building is self-possessed insufficient, friction
Pendulum support cannot reset completely.
Summary of the invention
The object of the present invention is to provide the friction pendulum seismic isolation devices and control method of a kind of Electromagnetic Control.
The present invention is the friction pendulum seismic isolation device and control method of a kind of Electromagnetic Control, the friction pendulum of Electromagnetic Control subtract every
Device, including horizontal seismic isolation unit, vertical earthquake isolating unit are shaken, horizontal seismic isolation unit has the lower part cover board of friction pendulum support 2 under
Column connection, lower prop are connected with basis, and friction pendulum top cover board is connected with upper prop；Vertical earthquake isolating unit is in connection friction pendulum
It is embedded to electromagnet in the upper lower prop of upper and lower covers pendulum, while it being connected with control system, including upper prop 1-1, lower prop 1-2, electromagnetism
Iron 1-3, coil 1-4, conducting wire 1-5, pressure sensor 1-6, displacement sensor 1-7, basis 1-8, friction pendulum support 2, control system
System 3, friction pendulum support 2 be it is a kind of subtract shock insulation mechanism in earthquake, be by upper cover plate 2-1, lower cover plate 2-2, sliding curved surface
2-3, sliding shoe 2-4, limited block 2-5 are constituted；Control system 3 is a kind of intelligence to be worked by controlling power supply come regulating magnet
Controller, by pressure sensor data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3 group
At；The lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, and lower prop 1-2 is connected with basis 1-8, friction pendulum upper cover
Plate 2-1 is connected with upper prop 1-1, is worked when for earthquake by friction pendulum support 2 come earthquake energy, and has signal biography
Out；Pressure sensor 1-6 and displacement sensor 1-7 are separately mounted on the sliding shoe 2-4 of friction pendulum support, under geological process when
Pressure sensor 1-6 and displacement sensor 1-7 can receive signal when friction pendulum works, and be to control by information data transmission
System 3；Control system 3 include pressure sensor data processor 3-1, displacement sensor data processor 3-2, control power supply open
Closing device 3-3, pressure sensor data processor 3-1 and displacement sensor data processor 3-2 can be to the information that sensor transmits
Data carry out processing analysis, be transferred to control power switching device by controlling signal later, and then adjust power supply, that is, disconnect electricity
Source is perhaps just connecing power supply or reversal connection power supply, to control electromagnet 1-3 work；Two pieces of electromagnet 1-3 are embedded to upper prop respectively
In 1-1 and lower prop 1-2, coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3, when control system 3 judges electromagnetism
When iron 1-3 works, the weight M of superstructure can be increased or reduced by being attracted or repelled, and then friction pendulum branch can be controlled
The device of the tangential force F and displacement X of seat 2.
The control method of the friction pendulum seismic isolation device of Electromagnetic Control of the invention, the steps include: when earthquake, structure hair
Raw structural response, friction pendulum works at this time, and the lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, lower prop 1-2 and base
Plinth 1-8 is connected, and friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, is mounted on pressure sensor 1-6 and position on sliding shoe
Displacement sensor 1-7 receives signal, and by information data transmission to control system 3；What is connected inside control system 3 has pressure biography
Sensor data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3, at pressure sensor data
Reason device 3-1 and displacement sensor data processor 3-2 carries out processing analysis to the information data that sensor transmits, and passes through control later
Signal processed is transferred to control power switching device, and then adjusts power supply, to control electromagnet 1-3 work；Two pieces of electromagnet 1-3
It is embedded in upper lower prop respectively, coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3, when control system 3 judges electricity
When magnet 1-3 works, the weight M of superstructure can be increased or reduced by being attracted or repelled, and then control friction pendulum branch
The tangential force F and displacement X of seat 2, ensure that safety value, make 2 trouble free service of friction pendulum support.
Compared with the background technology, the present invention, what is had has the advantages that: electromagnet and active computer technology are mutually tied
It closes, realizes the vibration control to multiple directions by controlling the magnetic force of electromagnet, to realize the intelligence put to conventional friction
Change control, focus on solving the variability of coefficient of friction in existing friction pendulum, residual displacement, vertically pulling-resistant ability it is small it is possible occur it is perpendicular
To topple, sliding block asks failure under the sensitive response and big shake effect under the impact wreckage of stop collar, small incentive action etc.
Topic.The seismic response of structure can be efficiently reduced, to reach better damping and isolation effect, plays better safety protection structure
The purpose of stability.
Detailed description of the invention
Fig. 1 is overall construction schematic diagram front view, and Fig. 2 is the top view of overall construction schematic diagram, and Fig. 3 is that overall construction shows
The left view of intention, Fig. 4 are the structural maps of electromagnet, and Fig. 5 is the structural map of single friction pendulum, and Fig. 6 is the process of control method
Block diagram.Appended drawing reference and corresponding title are as follows: upper prop 1-1, lower prop 1-2, electromagnet 1-3, coil 1-4, conducting wire 1-5, pressure sensing
Device 1-6, displacement sensor 1-7, basic 1-8, friction pendulum support 2, control system 3, pressure sensor data processor 3-1, position
Displacement sensor data processor 3-2 controls power switching device 3-3, friction pendulum support 2, upper cover plate 2-1, lower cover plate 2-2, sliding
Curved surface 2-3, sliding shoe 2-4, limited block 2-5.
Specific embodiment
The present invention is the friction pendulum seismic isolation device and control method of a kind of Electromagnetic Control, as shown in Fig. 1 ~ Fig. 6, electromagnetism control
The friction pendulum seismic isolation device of system, including horizontal seismic isolation unit, vertical earthquake isolating unit, horizontal seismic isolation unit have friction pendulum support 2
Lower part cover board connect with lower prop, lower prop is connected with basis, and friction pendulum top cover board is connected with upper prop；Vertical earthquake isolating list
Member is embedded to electromagnet in the upper lower prop of connection friction pendulum upper and lower covers pendulum, while it being connected with control system, including upper prop 1-
1, lower prop 1-2, electromagnet 1-3, coil 1-4, conducting wire 1-5, pressure sensor 1-6, displacement sensor 1-7, basis 1-8, friction
Put support 2, control system 3, friction pendulum support 2 be it is a kind of subtract shock insulation mechanism in earthquake, be by upper cover plate 2-1, lower cover
Plate 2-2, sliding curved surface 2-3, sliding shoe 2-4, limited block 2-5 are constituted；Control system 3 is that one kind adjusts electricity by control power supply
The intelligent controller of magnet works, by pressure sensor data processor 3-1, displacement sensor data processor 3-2, control electricity
Source switch device 3-3 composition；The lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, and lower prop 1-2 is connected with basis 1-8
It connects, friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, is worked when for earthquake by friction pendulum support 2 to consume seismic energy
Amount, and have signal outflow；Pressure sensor 1-6 and displacement sensor 1-7 is separately mounted to the sliding shoe 2-4 of friction pendulum support
On, when friction pendulum works, pressure sensor 1-6 and displacement sensor 1-7 can receive signal under geological process, and by information
Data are transferred to control system 3；Control system 3 includes pressure sensor data processor 3-1, displacement sensor data processing
Device 3-2, control power switching device 3-3, pressure sensor data processor 3-1 and displacement sensor data processor 3-2 can be right
The information data that sensor transmits carries out processing analysis, is transferred to control power switching device by controlling signal later, and then come
Power supply is adjusted, i.e. disconnection power supply, perhaps just connecing power supply or reversal connection power supply, to control electromagnet 1-3 work；Two blocks of electromagnetism
Iron 1-3 is embedded to respectively in upper prop 1-1 and lower prop 1-2, and coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3, when
When control system 3 judges electromagnet 1-3 work, the weight M of superstructure can be increased or reduced by being attracted or repelled, in turn
The device of the tangential force F and displacement X of friction pendulum support 2 can be controlled.
As shown in Figure 1, friction pendulum support 2 is single friction pendulum support, the lower spill that sliding surface is made of stainless steel
Arc-shaped surface；There is a turning joint in sliding block, make sliding block when sliding along the chute, superstructure is made to be in horizontality；It is sliding
Block bottom and sliding surface radius of curvature having the same are simultaneously coated with low-friction material, and can preferably dissipate seismic energy.
Such as Fig. 1, Fig. 5, electromagnet 1-3 is alternating electromagnet, and the shape of electromagnet is cylinder, and coil is from electromagnet both ends
It is multiple according to wound clockwise；The diameter of electromagnet is selected according to the diameter of pillar, to divide less than pillar diameter 15-25cm
Not She Zhi two blocks of electromagnet be embedded in upper prop 1-1 and lower prop 1-2, upper piece distance of the electromagnet 1-3 apart from friction pendulum upper cover plate 2-1
For 3-6cm, distance of the lower piece of electromagnet 1-3 apart from friction pendulum lower cover plate 2-2 is 3-6cm.
As shown in Figure 1, control system 3 is intelligence control system, it include pressure sensor data processor 3-1, displacement
Sensor data processor 3-2, control power switching device 3-3, pressure sensor data processor 3-1 and displacement sensor data
Processor 3-2 carries out processing analysis to the information data that sensor transmits, and is transferred to control power supply by control signal later and opens
Device is closed, and then adjusts power supply, is i.e. disconnection power supply, power supply or reversal connection power supply is perhaps just being connect, can control electromagnet 1-3 work
Make.
The control method of the friction pendulum seismic isolation device of Electromagnetic Control of the invention the steps include: as shown in Fig. 1 ~ Fig. 6
When earthquake, the response of structure recurring structure, friction pendulum works at this time, and the lower cover plate 2-2 and lower prop 1-2 of friction pendulum support 2 are fixed
Connection, lower prop 1-2 are connected with basis 1-8, and friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, the pressure being mounted on sliding shoe
Force snesor 1-6 and displacement sensor 1-7 receives signal, and by information data transmission to control system 3；In control system 3
Face connection has pressure sensor data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3,
At the information data that pressure sensor data processor 3-1 and displacement sensor data processor 3-2 transmit sensor
Reason analysis is transferred to control power switching device by control signal later, and then adjusts power supply, to control electromagnet 1-3
Work；Two pieces of electromagnet 1-3 are embedded in lower prop respectively, and coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3,
When control system 3 judges electromagnet 1-3 work, the weight M of superstructure can be increased or reduced by being attracted or repelled,
And then the tangential force F and displacement X of friction pendulum support 2 are controlled, it ensure that safety value, make 2 trouble free service of friction pendulum support.
The control method of the friction pendulum seismic isolation device of above-described Electromagnetic Control the steps include: when geological process
(1) when structure is by seismic interference, structure is responded, at this time superstructure weight measured by pressure sensor 1-6
Amount is M, and structure relative storey displacement measured by displacement sensor 1-7 is X；
(2) friction pendulum support 2 is started to work at this time, and the lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, lower prop 1-
2 are connected with basis 1-8, and friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, by being mounted on pressure sensor on sliding shoe 2-4
Displacement and tangential force data when the friction pendulum work measured with displacement sensor are X2、F2；
(3) displacement when 2 trouble free service of friction pendulum support is X0, Xmin≤X0≤Xmax, XminFor least displacement safety value, XmaxFor
Maximum displacement safety value；Tangential force is F0, Fmin≤F0≤Fmax, FminFor minimum tangential force safety value, FmaxFor maximum tangential force peace
Total head；
(4) at this time pressure, information all feeds back to control system 3 measured by displacement sensor, connected inside control system 3
There are pressure sensor data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3, pressure sensing
Device data processor 3-1 and displacement sensor data processor 3-2 carries out processing analysis to the information data that sensor transmits, it
Control power switching device is transferred to by controlling signal afterwards, and then adjusts power supply, to control electromagnet 1-3 work；
(5) if X at this timemin≤X2≤Xmax, Fmin≤F2≤Fmax, then controller input signal: power supply is disconnected, electromagnet 1-3 is not
Work, two pieces of electromagnet 1-3 are embedded in lower prop respectively, and coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3,
When control system 3 judges electromagnet 1-3 work, the weight M of superstructure can be increased or reduced by being attracted or repelled, electricity
When magnet does not work, i.e. N=0；
(6) i.e. superstructure obtains weight M and does not change, and friction pendulum continues to work normally, according to this formula:
The tangential force calculated is constant；
(7) due to the trouble free service of friction pendulum support 2, the relative storey displacement X of structure is substantially reduced at this time, it is ensured that the safety of structure
Stablize；
(8) if X at this time2≤Xmin, F2≤Fmin, then 3 input signal of control system: just powering on, work of electromagnet, to inhale
Power, i.e. N=N1；
(9) weight of superstructure i.e. at this time is M+N1；Friction pendulum works on, according to this formula:
The tangential force calculated increases,
Then the displacement of friction pendulum sliding can also increase with it；
(10) suction of electromagnet 1-3 ensure that the normal work of friction pendulum support 2, improve breakout capacity, prevent structure from sending out
Life is toppled；It is substantially reduced the relative storey displacement X of structure, it is ensured that the safety and stability of structure；
(11) if X at this time2≥Xmax, F2≥Fmax, then 3 input signal of control system: counter to power on, work of electromagnet is
Repulsion, i.e. N=N2；
(12) weight of superstructure i.e. at this time is M=N2；Friction pendulum works on, according to this formula:
The tangential force calculated reduces, then
The displacement of friction pendulum sliding can also reduce therewith；
(13) repulsion of electromagnet 1-3 ensure that the normal work of friction pendulum, avoid collision of the friction pendulum support 2 to limited block
It destroys, while making the reset of displacement structure maximum possible；
(14) in earthquake time-continuing process, this system feeds back the information to come by pressure, displacement sensor, and controller is according to information
Loop control electromagnet 1-3, and then loop control friction pendulum works；
(15) earthquake terminates, and controller system is closed.
The course of work of electromagnet 1-3 of the present invention is as follows:
As shown in figure 4, the course of work of electromagnet is: the safety value for assuming first that displacement is X0, the safety value of pressure is M0, (M1
≤M0≤M2), M1For minimum pressure safety value, M2For maximum pressure safety value.If the output of displacement sensor and pressure sensor
Value is respectively X, M.The active force of electromagnet is N.
(1) as X≤X0, M1≤M≤M2When, then control system at this time is idle to the order of electromagnet, i.e. N=0.
(2) as X > X0, M1≤M≤M2When, control system is work to the order of electromagnet at this time, and regulating magnet is rubbed
The active force for wiping pendulum is N.
(3) as X≤X0, M < M1When, control system regulating magnet is N=N to the active force of friction pendulum at this time1(at this time two
It is mutual suction relationship between electromagnet).
(4) as X≤X0, M > M2When, control system regulating magnet is N=N to the active force of friction pendulum at this time2(at this time two
It is mutex relation between electromagnet)
(5) as X > X0, M < M1When, N=N at this time3。
(6) as X > X0, M > M2When, N=N at this time4 。
As shown in figure 5, for single friction pendulum device area, friction pendulum support mechanics parameter value are as follows: under macroseism excitation,
Friction pendulum support is slided with the working principle of single pendulum along curved surface, the tangential force F of friction pendulum are as follows:
In formula: F is the tangential force of friction pendulum support；M is the weight of building superstructure；N is the power (suction that electromagnet is given
Or repulsion)；X is the horizontal displacement of support；R is the radius of curvature of sliding surface；μ is coefficient of friction；SgnX is related with displacement
Sign function.
Support post-yield stiffness are as follows:
The natural vibration period of isolation structure are as follows:
For electromagnet, the course of work, which attracts each other, (need to only change the i.e. changeable magnetic of its current direction with mutually exclusive
Pole).
Specific control method are as follows: as shown in fig. 6, being the flow diagram of entire control method, when earthquake, structure is tied
Structure response, friction pendulum works at this time, and the lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, lower prop 1-2 and basis 1-
8 are connected, and friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, and the pressure sensor 1-6 and displacement being mounted on sliding shoe are passed
Sensor 1-7 receives signal, and by information data transmission to control system 3.What is connected inside control system 3 has pressure sensor
Data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3, pressure sensor data processor
3-1 and displacement sensor data processor 3-2 carries out processing analysis to the information data that sensor transmits, and passes through control letter later
It number is transferred to control power switching device, and then adjusts power supply, to control electromagnet 1-3 work.Two pieces of electromagnet 1-3 difference
In embedment in lower prop, coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3, when control system 3 judges electromagnet
When 1-3 works, the weight M of superstructure can be increased or reduced by being attracted or repelled, and then control friction pendulum support 2
Tangential force F and displacement X, ensure that safety value, makes 2 trouble free service of friction pendulum support.
When geological process, the specific program that controls is sequentially included the following steps:
(1) when structure is by seismic interference, structure is responded, at this time superstructure weight measured by pressure sensor 1-6
Amount is M, and structure relative storey displacement measured by displacement sensor 1-7 is X；
(2) friction pendulum 2 is started to work at this time, and the lower cover plate 2-2 of friction pendulum support 2 is fixedly connected with lower prop 1-2, lower prop 1-2 and
Basic 1-8 is connected, and friction pendulum upper cover plate 2-1 is connected with upper prop 1-1, by be mounted on sliding shoe 2-4 pressure sensor and
Displacement and tangential force data when the friction pendulum work that displacement sensor measures are X2、F2；
(3) displacement when 2 trouble free service of friction pendulum is X0(Xmin≤X0≤Xmax),XminFor least displacement safety value, XmaxFor most
Big displacement safety value.Tangential force is F0(Fmin≤F0≤Fmax),FminFor minimum tangential force safety value, FmaxFor maximum tangential force peace
Total head；
(4) at this time pressure, information all feeds back to control system 3 measured by displacement sensor, connected inside control system 3
There are pressure sensor data processor 3-1, displacement sensor data processor 3-2, control power switching device 3-3, pressure sensing
Device data processor 3-1 and displacement sensor data processor 3-2 carries out processing analysis to the information data that sensor transmits, it
Control power switching device is transferred to by controlling signal afterwards, and then adjusts power supply, to control electromagnet 1-3 work；
(5) if X at this timemin≤X2≤Xmax, Fmin≤F2≤Fmax, then controller input signal: power supply is disconnected, electromagnet 1-3 is not
Work, two pieces of electromagnet 1-3 are embedded in lower prop respectively, and coil 1-4 is connected with conducting wire 1-5 and is connected into control system 3,
When control system 3 judges electromagnet 1-3 work, the weight M of superstructure can be increased or reduced by being attracted or repelled, electricity
When magnet does not work, i.e. N=0；
(6) i.e. superstructure obtains weight M and does not change, and friction pendulum continues to work normally, according to this formula:
The tangential force calculated is constant；
(7) due to the trouble free service of friction pendulum 2, the relative storey displacement X of structure is substantially reduced at this time, it is ensured that the safety of structure is steady
It is fixed；
(8) if X at this time2≤Xmin, F2≤Fmin, then 3 input signal of controller: just powering on, work of electromagnet, to inhale
Power, i.e. N=N1；
(9) weight of superstructure i.e. at this time is M+N1.Friction pendulum works on, according to this formula:
The tangential force calculated increases, then the displacement of friction pendulum sliding also can be with
Increase；
(10) suction of electromagnet 1-3 ensure that the normal work of friction pendulum 2, improve breakout capacity, prevent structure from inclining
It covers.It is substantially reduced the relative storey displacement X of structure, it is ensured that the safety and stability of structure；
(11) if X at this time2≥Xmax, F2≥Fmax, then 3 input signal of controller: counter to power on, work of electromagnet, for reprimand
Power, i.e. N=N2；；
(12) weight of superstructure i.e. at this time is M=N2.Friction pendulum works on, according to this formula:
The tangential force calculated reduces, then the displacement of friction pendulum sliding also can be therewith
Reduce；
(13) repulsion of electromagnet 1-3 ensure that the normal work of friction pendulum, avoid collision of the friction pendulum support 2 to limited block
It destroys, while making the reset of displacement structure maximum possible；
(14) in earthquake time-continuing process, this system feeds back the information to come by pressure, displacement sensor, and controller is according to information
Loop control electromagnet 1-3, and then loop control friction pendulum works；
(15) earthquake terminates, and controller system is closed.
Claims (6)
1. a kind of friction pendulum seismic isolation device of Electromagnetic Control, including horizontal seismic isolation unit, vertical earthquake isolating unit, horizontal seismic isolation list
Member has the lower part cover board of friction pendulum support (2) to connect with lower prop, and lower prop is connected with basis, friction pendulum top cover board and upper prop phase
Connection；Vertical earthquake isolating unit is embedded to electromagnet in the upper lower prop of connection friction pendulum upper and lower covers pendulum, while by itself and control system
Be connected, including upper prop (1-1), lower prop (1-2), electromagnet (1-3), coil (1-4), conducting wire (1-5), pressure sensor (1-6),
Displacement sensor (1-7), basis (1-8), friction pendulum support (2), control system (3), it is characterised in that friction pendulum support (2) is
It is a kind of to subtract shock insulation mechanism in earthquake, it is by upper cover plate (2-1), lower cover plate (2-2), sliding curved surface (2-3), sliding shoe
(2-4), limited block (2-5) are constituted；Control system (3) is a kind of intelligent control to be worked by controlling power supply come regulating magnet
Device, by pressure sensor data processor (3-1), displacement sensor data processor (3-2), control power switching device (3-3)
Composition；The lower cover plate (2-2) of friction pendulum support (2) is fixedly connected with lower prop (1-2), and lower prop (1-2) is connected with basic (1-8)
It connects, friction pendulum upper cover plate (2-1) is connected with upper prop (1-1), is worked when being used for earthquake by friction pendulum support (2) to consume ground
Energy is shaken, and has signal outflow；Pressure sensor (1-6) and displacement sensor (1-7) are separately mounted to friction pendulum support
On sliding shoe (2-4), when friction pendulum works, pressure sensor (1-6) and displacement sensor (1-7) can be received under geological process
To signal, and by information data transmission to control system (3)；Control system (3) includes pressure sensor data processor (3-
1), displacement sensor data processor (3-2), control power switching device (3-3), pressure sensor data processor (3-1) and
Displacement sensor data processor (3-2) can carry out processing analysis to the information data that sensor transmits, and pass through control letter later
It number is transferred to control power switching device, and then adjusts power supply, is i.e. disconnection power supply, perhaps just connecing power supply or reversal connection power supply, from
And control electromagnet (1-3) work；Two pieces of electromagnet (1-3) are embedded in upper prop (1-1) and lower prop (1-2) respectively, coil (1-4)
It is connected with conducting wire (1-5) and is connected into control system (3), when control system (3) judges electromagnet (1-3) work, energy
The weight M of superstructure is increased or reduced by being attracted or repelled, and then can control the tangential force F of friction pendulum support (2)
With the device of displacement X.
2. the friction pendulum seismic isolation device of Electromagnetic Control according to claim 1, it is characterised in that: the friction pendulum branch
Seat (2) is single friction pendulum support, the lower spill arc-shaped surface that sliding surface is made of stainless steel；There is an activity in sliding block
Joint makes sliding block when sliding along the chute, and superstructure is made to be in horizontality；Slider bottom and sliding surface song having the same
Rate radius is simultaneously coated with low-friction material, and can preferably dissipate seismic energy.
3. the friction pendulum seismic isolation device of Electromagnetic Control according to claim 1, it is characterised in that: the electromagnet
(1-3) is alternating electromagnet, and the shape of electromagnet is cylinder, and coil is multiple according to wound clockwise from electromagnet both ends；Electricity
The diameter of magnet is selected according to the diameter of pillar, to be respectively set in two pieces of electromagnet embedments less than pillar diameter 15-25cm
In column (1-1) and lower prop (1-2), upper piece distance of the electromagnet (1-3) apart from friction pendulum upper cover plate (2-1) is 3-6cm, lower block of electricity
Distance of the magnet (1-3) apart from friction pendulum lower cover plate (2-2) is 3-6cm.
4. electromagnetically controlled friction pendulum seismic isolation device according to claim 1, it is characterised in that: the control system
(3) are united as intelligence control system, include pressure sensor data processor (3-1), displacement sensor data processor (3-
2) power switching device (3-3), is controlled, pressure sensor data processor (3-1) and displacement sensor data processor (3-2) are right
The information data that sensor transmits carries out processing analysis, is transferred to control power switching device by controlling signal later, and then come
Power supply is adjusted, i.e. disconnection power supply, is perhaps just connecing power supply or reversal connection power supply, electromagnet (1-3) work can be controlled.
5. the control method of the friction pendulum seismic isolation device of Electromagnetic Control, which is characterized in that the steps include: when earthquake, structure
Recurring structure response, friction pendulum works at this time, and the lower cover plate (2-2) of friction pendulum support (2) is fixedly connected with lower prop (1-2), under
Column (1-2) is connected with basic (1-8), and friction pendulum upper cover plate (2-1) is connected with upper prop (1-1), is mounted on sliding shoe
Pressure sensor (1-6) and displacement sensor (1-7) receive signal, and give information data transmission to control system (3)；Control
What is connected inside system (3) has pressure sensor data processor (3-1), displacement sensor data processor (3-2), control electricity
Source switch device (3-3), pressure sensor data processor (3-1) and displacement sensor data processor (3-2) pass sensor
The information data come carries out processing analysis, be transferred to control power switching device by control signal later, and then adjusts power supply,
To control electromagnet (1-3) work；Two pieces of electromagnet (1-3) are embedded in lower prop respectively, coil (1-4) and conducting wire (1-5)
Be connected and be connected into control system (3), when control system (3) judges electromagnet (1-3) work, can by attracting or
Repel each other to increase or reduce the weight M of superstructure, and then control the tangential force F and displacement X of friction pendulum support (2), ensure that
Safety value makes friction pendulum support (2) trouble free service.
6. the control method of the friction pendulum seismic isolation device of Electromagnetic Control according to claim 5, which is characterized in that local
When shake acts on, it the steps include:
(1) when structure is by seismic interference, structure is responded, at this time superstructure measured by pressure sensor (1-6)
Weight is M, and structure relative storey displacement measured by displacement sensor (1-7) is X；
(2) friction pendulum support (2) is started to work at this time, and the lower cover plate (2-2) and lower prop (1-2) of friction pendulum support (2) are fixed to be connected
It connects, lower prop (1-2) is connected with basic (1-8), and friction pendulum upper cover plate (2-1) is connected with upper prop (1-1), by being mounted on sliding
Displacement and tangential force data when the friction pendulum work that pressure sensor and displacement sensor measure on block (2-4) are X2、F2；
(3) displacement when friction pendulum support (2) trouble free service is X0, Xmin≤X0≤Xmax, XminFor least displacement safety value, Xmax
For maximum displacement safety value；Tangential force is F0, Fmin≤F0≤Fmax, FminFor minimum tangential force safety value, FmaxFor maximum tangential force
Safety value；
(4) at this time pressure, information is all fed back to control system (3) measured by displacement sensor, connect inside control system (3)
What is connect has pressure sensor data processor (3-1), displacement sensor data processor (3-2), control power switching device (3-
3), the information data that pressure sensor data processor (3-1) and displacement sensor data processor (3-2) transmit sensor
It processing analysis is carried out, is transferred to control power switching device by controlling signal later, and then adjust power supply, to control electromagnetism
Iron (1-3) work；
(5) if X at this timemin≤X2≤Xmax, Fmin≤F2≤Fmax, then controller input signal: power supply is disconnected, electromagnet (1-3) is no
Work, two pieces of electromagnet (1-3) are embedded in lower prop respectively, and coil (1-4) is connected with conducting wire (1-5) and is connected into control system
It unites in (3), when control system (3) judges electromagnet (1-3) work, top knot can be increased or reduced by being attracted or repelled
The weight M of structure, when electromagnet does not work, i.e. N=0；
(6) i.e. superstructure obtains weight M and does not change, and friction pendulum continues to work normally, according to this formula:
The tangential force calculated is constant；
(7) due to the trouble free service of friction pendulum support (2), the relative storey displacement X of structure is substantially reduced at this time, it is ensured that the peace of structure
It is complete to stablize；
(8) if X at this time2≤Xmin, F2≤Fmin, then control system (3) input signal: just power on, work of electromagnet is
Suction, i.e. N=N1；
(9) weight of superstructure i.e. at this time is M+N1；Friction pendulum works on, according to this formula:
The tangential force calculated increases,
Then the displacement of friction pendulum sliding can also increase with it；
(10) suction of electromagnet (1-3) ensure that the normal work of friction pendulum support (2), improve breakout capacity, prevent from tying
Structure topples；It is substantially reduced the relative storey displacement X of structure, it is ensured that the safety and stability of structure；
(11) if X at this time2≥Xmax, F2≥Fmax, then control system (3) input signal: counter to power on, work of electromagnet is
Repulsion, i.e. N=N2；
(12) weight of superstructure i.e. at this time is M=N2；Friction pendulum works on, according to this formula:
The tangential force calculated reduces, then
The displacement of friction pendulum sliding can also reduce therewith；
(13) repulsion of electromagnet (1-3) ensure that the normal work of friction pendulum, avoid friction pendulum support (2) to limited block
Impact wreckage, while making the reset of displacement structure maximum possible；
(14) in earthquake time-continuing process, this system feeds back the information to come by pressure, displacement sensor, and controller is according to information
Loop control electromagnet (1-3), and then loop control friction pendulum works；
(15) earthquake terminates, and controller system is closed.
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| CN111877590A (en) * | 2020-08-13 | 2020-11-03 | 兰州理工大学 | Friction pendulum vibration reduction and isolation device based on direct current and alternating current electromagnet control |
| CN112648330A (en) * | 2020-09-15 | 2021-04-13 | 西南科技大学 | Semi-actively controlled pendulum type three-dimensional showcase shock isolation device |
| CN113110102A (en) * | 2021-04-22 | 2021-07-13 | 兰州理工大学 | Friction pendulum semi-active shock isolation system based on PSO algorithm and control method |
| CN114046326A (en) * | 2021-11-11 | 2022-02-15 | 兰州理工大学 | Electromagnetic friction pendulum vibration reduction and isolation support and coil winding wiring method |
| CN114623184A (en) * | 2022-03-04 | 2022-06-14 | 西安热工研究院有限公司 | Intelligent adjusting system suitable for electromagnetic shock absorber |
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| WO2023108301A1 (en) * | 2021-12-17 | 2023-06-22 | The Governors Of The University Of Alberta | Smart friction pendulum system |
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| CN111877590A (en) * | 2020-08-13 | 2020-11-03 | 兰州理工大学 | Friction pendulum vibration reduction and isolation device based on direct current and alternating current electromagnet control |
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| CN114046326A (en) * | 2021-11-11 | 2022-02-15 | 兰州理工大学 | Electromagnetic friction pendulum vibration reduction and isolation support and coil winding wiring method |
| CN114046326B (en) * | 2021-11-11 | 2024-02-23 | 兰州理工大学 | Electromagnetic friction pendulum vibration reduction and isolation support and wiring method of coil winding |
| WO2023108301A1 (en) * | 2021-12-17 | 2023-06-22 | The Governors Of The University Of Alberta | Smart friction pendulum system |
| CN114623184A (en) * | 2022-03-04 | 2022-06-14 | 西安热工研究院有限公司 | Intelligent adjusting system suitable for electromagnetic shock absorber |
| CN114808674A (en) * | 2022-05-12 | 2022-07-29 | 长沙理工大学 | Electromagnetic control-based self-adaptive friction pendulum support and resetting method |
| CN114808674B (en) * | 2022-05-12 | 2023-12-08 | 长沙理工大学 | Self-adaptive friction pendulum support based on electromagnetic control and resetting method |
| CN115182476A (en) * | 2022-08-11 | 2022-10-14 | 安徽工业大学 | Three-dimensional shock isolation system capable of achieving elastic limiting at ordinary times and unilateral limiting during working |
| CN115182476B (en) * | 2022-08-11 | 2024-03-29 | 安徽工业大学 | Three-dimensional vibration isolation system capable of achieving elastic limiting at ordinary times and unilateral limiting during working |
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