CN106545101A - The three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted - Google Patents
The three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted Download PDFInfo
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- CN106545101A CN106545101A CN201610903644.0A CN201610903644A CN106545101A CN 106545101 A CN106545101 A CN 106545101A CN 201610903644 A CN201610903644 A CN 201610903644A CN 106545101 A CN106545101 A CN 106545101A
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- steel wire
- wire rope
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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
Abstract
The present invention relates to the three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted, the device includes the vertical earthquake isolating bearing and laminated rubber damping bearing of mutual concatenation；It is characterized in that, backpressure device is additionally provided with the fairlead of the vertical earthquake isolating bearing, the backpressure device includes the precompressed steel wire rope of more than three, the steel wire rope break-in element equal with precompressed steel wire rope quantity and steel wire rope self-locking tensioning anchorage, and one block of floating back-pressure steel plate, wherein precompressed steel wire rope is in broken line state, and an axisymmetrical around described fairlead of each precompressed steel wire rope is fixed on floating back-pressure steel plate, other end was turned back after passing around a relative steel wire rope break-in element, then all of precompressed steel wire rope is listed as restricting beam through floating back-pressure steel plate, it is anchored on base by steel wire rope self-locking tensioning anchorage；By tension force needed for precompressed steel wire tensioning to default initial stiffness, cylindrical helical compression spring is made to be clamped between driving pressing plate and floating back-pressure steel plate all the time.
Description
Technical field
The present invention relates to a kind of building vibration proof (or vibrations) device, and in particular to it is a kind of by laminated steel and rubber pillow with it is perpendicular
To the three-dimensional isolation device of shock isolating pedestal series connection.
Background technology
Earthquake isolating equipment is the shockproof isolating device being located between building and basis.The earthquake isolating equipment of early stage is mainly by rubber
The two-dimentional shock isolating pedestal (laminated rubber damping bearing) being superimposed to form with sheet metal, can only isolate the level point of seismic wave
Amount.With the raising that people are recognized to earthquake Multi-attributes, three-dimensional isolation device is gradually paid attention to by this area researcher.Most
Common three-dimensional isolation device is exactly to be in series with existing vertical earthquake isolating bearing by laminated rubber damping bearing.
The application for a patent for invention of 102409777 A of Publication No. CN discloses a kind of structure three-dimensional shock insulation and antidumping dress
Put, the main body mechanism of the device is in series with spring shock-proof bearing 15 by laminated rubber damping bearing 14, the agent structure
Upper and lower side be respectively arranged with upper junction plate 1 and lower connecting plate 18, it is characterised in that：The upper junction plate 1 and lower connecting plate 18
Between be provided with and misplace uniform tensile steel wire rope 16 around agent structure surrounding, the pole in the horizontal direction of the tensile steel wire rope 16
Horizontal shear elastic deformation amount of the limit deflection more than main body mechanism.Although scheme can improve three-dimensional isolation described in the patent application
The tensile strength of device, to resist the produced huge pulling force that waves or even topple of earthquake middle-high building thing, but still deposits
In following deficiency：1st, described spring shock-proof bearing can only compress energy-dissipating and shock-absorbing, it is impossible to stretch energy-dissipating and shock-absorbing；2nd, described bullet
Spring shock isolating pedestal can not preset initial stiffness, and being not easy to default earthquake intensity reduces shock insulation cost.
The application for a patent for invention of Publication No. CN1932324A discloses a kind of " adjustable disc-shape spring mechanical damping resistance
Buddhist nun's device ", the damper include shell, the load connecting rod for being located inside the shell and two groups of disk springs, described, the load connection
Regulation gear connected therewith is provided with the middle part of bar, is respectively equipped with the load connecting rod of the regulation gear both sides and is connected with load
Left-handed nut and right-handed nut that extension bar screw thread coordinates, two groups of disk springs are respectively provided at the left-handed nut and dextrorotation spiral shell
Female outside, and be clamped between the left-handed nut or right-handed nut and the shrouding of outer casing end respectively.Switch is only needed to carry
Regulation gear in lotus connecting rod, makes the left-handed nut and right-handed nut mutually draw close or away from i.e. adjustable two groups of dish-shaped bullets
The pretightning force of spring so as to the damped coefficient of damping adjusting device, to meet the use demand of different frequency and various amplitude.But should
Invention still has following not enough：1st, the load connecting rod is that balance is kept under the collective effect of two groups of disk springs, two
Although the pretightning force of group disk spring can be adjusted, adjust anyway, the work of two groups of disk springs to load connecting rod
All it is firmly one group of power equal in magnitude, in opposite direction, only need to apply any external force in load connecting rod can all destroy this
Balance, makes two groups of disk springs deform, so described damper cannot preset initial stiffness；2nd, must match somebody with somebody in the invention
Close using two groups of disk springs, damping could be all provided when damper presses or draws load, this not only causes certain
Waste, also so that the length of damper greatly increases.
Publication No.CN101457553AApplication for a patent for invention disclose that a kind of " spring stiffness adjustable tuning quality subtracts
Shake device ", the shock absorber is a kind of composite buffer, changes its characteristic frequency by changing the thickness of mass, viscous by changing
The flow of the working media of stagnant damper changes its damping ratio, changes its rigidity by the effective active length for changing spring, its
The means of the middle effective active length for changing spring have three kinds, and one is a section be located at spring using curing materials in solidification cylinder
Solidification, two fill in constraint block, and the two interference fit toward intracardiac in helical spring, make the one section of spring contacted with constraint block
Failure, three is to arrange helical raised on constraint block surface, and helical raised is stuck between spring wire, makes to block between spring wire
There is one section of spring failure of helical raised.As can be seen here, although the spring in the patent application scheme can change rigidity, institute
Not only effectively active length substantially shortens the spring stated, and can only compress passive energy dissipation, it is impossible to stretch passive energy dissipation.
The content of the invention
The technical problem to be solved is to provide the three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted, should
Three-dimensional isolation device not only both compressible passive energy dissipation, and stretchable passive energy dissipation, but also maintain in vertical earthquake isolating bearing
Effective active length of cylindrical helical compression spring.
The present invention solves the technical scheme of above-mentioned technical problem：
The three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted, the three-dimensional isolation device include what is be sequentially connected in series up and down
Laminated rubber damping bearing and vertical earthquake isolating bearing；Wherein,
Described laminated rubber damping bearing include upper junction plate, lower connecting plate, be clamped in be vertically connected with it is folded between plate
Layer rubber blanket and at least three tensile steel wire ropes for being distributed on laminated rubber bearing surrounding；One of the tensile steel wire rope is fixed on
On upper junction plate, other end is fixed on lower connecting plate, and the line of upper and lower two fixing point is parallel to the laminated rubber bearing
Axis；
Described vertical earthquake isolating bearing includes base, and the upper surface of the base is provided with upwardly extending fairlead；It is described to lead
Cylindrical helical compression spring is coaxially provided with to set is internal, the top of the cylindrical helical compression spring is provided with driving pressing plate；Institute
The middle part of the lower connecting plate lower surface of the laminated rubber damping bearing stated extends one raised into the fairlead, the projection and institute
The driving pressing plate stated is fixedly connected；
Characterized in that,
Backpressure device is additionally provided with the fairlead of the vertical earthquake isolating bearing, the backpressure device includes the precompressed of more than three
The steel wire rope steel wire rope break-in element equal with precompressed steel wire rope quantity, a steel wire rope self-locking tensioning anchorage and one piece of floating
Back-pressure steel plate, wherein,
Described floating back-pressure steel plate is located between cylindrical helical compression spring and base；
Described steel wire rope break-in element is fixed on described driving pressing plate around the axisymmetrical of described fairlead；
Described steel wire rope self-locking is tensioned anchorage by the first self-centering locking fixture, the second self-centering locking fixture, anti-torsion
Compression spring and plane bearing composition, wherein：
A the first self-centering locking fixture described in) has a connecting seat, is provided with axially extending in the middle part of the connecting seat one end
Cylindrical boss, the internal of the boss are provided with the first taper jaw being made up of 3～5 claw pieces along axial line, and outer peripheral face is arranged
There is tensioning swivel nut；Wherein, the microcephaly of first tapered clamp points to connecting seat, and the outer peripheral face of the tensioning swivel nut is positive six side
Shape；
B the second self-centering locking fixture described in) has a tapered sleeve, and the internal of the tapered sleeve is sequentially provided with by 3～5 along axis
The second taper jaw and hollow bolt of claw piece composition, wherein, the head and the second taper jaw of described hollow bolt
Major part is relative, and the outer peripheral face of the tapered sleeve is regular hexagon；
C the plane bearing described in) is by ball-retainer component and is respectively provided on the tensioning swivel nut end face relative with tapered sleeve
Ring raceway constitute, wherein described ring raceway is matched with the ball in ball-retainer component；
D) the second self-centering locking fixture is located at the outside of the tensioning swivel nut head, and the second taper jaw microcephaly
It is consistent with the sensing of the first taper jaw microcephaly；Described plane bearing is located between the tensioning swivel nut and tapered sleeve, described
Anti- compression spring of turning round is located in the endoporus of tensioning swivel nut；Pressure is turned round when Jing is anti-between calvus of the precompressed steel wire rope by the first taper jaw
After passing between the calvus of the centre bore and the second taper jaw of contracting spring and plane bearing, act in precompressed steel wire rope tension
Under, anti-turn round compression spring one is acted on the first taper jaw, and other end is acted on tapered sleeve；
Described precompressed steel wire rope is distributed in the centre bore of cylindrical helical compression spring with broken line state, and each
One axisymmetrical around described fairlead of precompressed steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relative
A steel wire rope break-in element after turn back, then all of precompressed steel wire rope be listed as restrict beam, lead from floating back-pressure steel plate
To the point of set axis process through floating back-pressure steel plate, it is anchored on base by steel wire rope self-locking tensioning anchorage；Described floating
On back-pressure steel plate, the position passed through in the rope beam is provided through the through hole of the rope beam, and the aperture of the through hole is more than the rope
The diameter of beam；
By precompressed steel wire tensioning to needed for vertical initial stiffness is set tension force, make described cylindrical helical compression spring
All the time it is clamped between driving pressing plate and floating back-pressure steel plate；
The tensile steel wire rope is tensioned the precompression provided for laminated rubber bearing equal to design dead load.
The operation principle of above-mentioned three-dimensional isolation device vertical earthquake isolating is as follows：When vertical dynamic loading it is relative along the axis of fairlead
During effect, pressure is delivered to driving pressing plate via laminated rubber damping bearing, is allowed to move down compression cylindrical helical compression spring；
When dynamic loading is acted on opposite to each other along the axis of fairlead, pulling force is delivered to driving pressing plate via tensile steel wire rope, drives on pressing plate
Move, and precompressed steel wire rope is then reversely sling floating back-pressure steel plate compression cylindrical helical compression bullet by steel wire rope break-in element
Spring.As can be seen here, no matter relative axial dynamic loading is or acts on three-dimensional isolation device opposite to each other, can compress cylindrical helical
Compression spring so as to elastic deformation occurs and consumes energy.
It is from above-mentioned operation principle, logical on the precompressed steel wire rope described in the course of work and the floating back-pressure steel plate
The hole wall in hole can not produce friction, otherwise interfere with moving up and down for floating back-pressure steel plate, therefore the through-hole diameter compares institute
The diameter for stating the rope beam that precompressed steel wire rope is constituted side by side is how many greatly, not disturb and should affect moving up and down for floating back-pressure steel plate
It is advisable..
In such scheme, described steel wire rope break-in element is the suspension ring shape structure of common fixed pulley or similar break-in function
Part, such as lifting bolt, U-shaped component etc..
The three-dimensional isolation device that vertical initial stiffness of the present invention can be adjusted, wherein described precompressed steel wire rope is fixed
One on floating back-pressure steel plate can may also be employed similar lifting bolt system and connect fixation using being welded and fixed.
The three-dimensional isolation device that the vertical initial stiffness of the present invention can be adjusted is had the effect that compared with prior art：
(1) in the vertical direction, you can compression energy-dissipating and shock-absorbing, and stretchable energy-dissipating and shock-absorbing；Effectively can build depletion high level
Build the huge pulling force that thing is produced to building foundation due to waving；And a spring is only needed, vertical extension is little, good stability.
(2) after defensive ability/resistance ability of the vertical dynamic loading more than default vertical initial stiffness, vertical earthquake isolating in the present invention
The bidirectional elastic deformation of seat is symmetrical, therefore the effect of its compression power consumption is not affected because of the change of the positive negative direction of vertical load
Really；
(3) as long as the length for changing precompressed steel wire rope can change the vertical initial stiffness of whole device, external force is overcoming
Earthquake isolating equipment cannot be made before the vertical initial stiffness to produce vertical deformation, building effectively be inhibited in small earthquake and weak wind
Produce in the presence of shaking and rock, the shockproof grade of wind resistance of predeterminable building significantly reduces the shockproof cost of wind resistance；
(4), during presetting vertical initial stiffness, effective active length of the cylindrical helical compression spring is constant, no
The original characterisitic parameter of cylindrical helical compression spring can be changed.
(5) initial stiffness is preset using the characteristic reasonable selection of butterfly spring, and then select the feature frequency of earthquake isolating equipment
Domain scope, avoids the intrinsic frequency domain of building structure and the vertically frequency domain of seismic wave, prevents resonance.
(6) using steel wire rope self-locking tensioning anchorage one of precompressed steel wire rope is fixed on base, one be can be to precompressed
The length of steel wire rope is adjusted, and two is, using the anti-synergy for turning round compression spring and the first self-centering locking fixture, can have
Effect prevents precompressed steel wire rope from twisting during length adjustment is carried out and changes the characterisitic parameter of wire digging line.
(7) thing that can effectively buffer building rocks stretching and the compression shock that trend is produced to building basis, further
Reduce the risk that building topples.
Description of the drawings
Structural representation of Fig. 1～6 for a specific embodiment of three-dimensional isolation device of the present invention, wherein, Fig. 1 is
Front view (the D-D rotations of Fig. 3 are cutd open), A-A sectional views (omit precompressed steel wire rope) of the Fig. 2 for Fig. 1, B-B section views of the Fig. 3 for Fig. 1
Figure (omits precompressed steel wire rope), C-C sectional views (omit tensile steel wire rope) of the Fig. 4 for Fig. 1, and Fig. 5 is that the structure of Fig. 1 local I is put
Big to scheme, Fig. 6 is the schematic enlarged-scale view of Fig. 1 local II.
Fig. 7～11 are the structural representation of steel wire rope self-locking tensioning anchorage in the illustrated embodiment of Fig. 1～6, wherein, Fig. 7 is
Front view (section view), in figure, dotted line represents precompressed steel wire rope, and Fig. 8 is upward view, and Fig. 9 is the E-E profiles of Fig. 7, and Figure 10 is Fig. 7
F-F profiles, Figure 11 for Fig. 7 G-G sectional views.
Structural representation of Figure 12～15 for second specific embodiment of three-dimensional vibration isolating device of the present invention, wherein,
Figure 12 is front view (section view), and Figure 13 is the H-H sectional views (omitting precompressed steel wire rope) of Figure 12, and Figure 14 is the I-I section views of Figure 12
Figure (omits precompressed steel wire rope), J-J cutaway view Amplified images of the Figure 15 for Figure 13.
Structural representation of Figure 16～20 for the 3rd specific embodiment of three-dimensional vibration isolating device of the present invention, its
In, Figure 16 is front view (section view), and Figure 17 is the K-K sectional views (omitting precompressed steel wire rope) of Figure 16, and Figure 18 is cutd open for the L-L of Figure 16
View (omits precompressed steel wire rope), and Figure 19 is the schematic enlarged-scale view of Figure 16 local III, and Figure 20 is that the structure of Figure 16 local IV is amplified
Figure.
Specific embodiment
Example 1
Referring to Fig. 1, the three-dimensional shock isolation support in this example is by the laminated rubber damping bearing and vertical earthquake isolating connected up and down
Seat composition.
Referring to Fig. 1 and Fig. 4, described laminated rubber damping bearing includes upper junction plate 15, lower connecting plate 8, be clamped on
Laminated rubber bearing 17 and six roots of sensation tensile steel wire rope 16 between lower connecting plate；Wherein, described upper junction plate 15 and lower connecting plate 8
In the form of annular discs, the edge of upper junction plate 15 is provided with installing hole 6；The main body of the laminated rubber bearing 17 by one layer of rubber 17-1 with
Molding sulfuration after one layer of steel plate 17-2 is superimposed is constituted, and its periphery self-assembling formation rubber is protected during molding sulfuration
Layer 17-3.The upper and lower ends face of 17 main body of the laminated rubber bearing is equipped with connection steel plate 17-4, two pieces of connections steel plate 17-
4 are welded and fixed together with upper junction plate 15 and lower connecting plate 8 respectively.Described six roots of sensation tensile steel wire rope 16 is around laminated rubber bearing
17 axis is symmetrically distributed in its surrounding, and of each tensile steel wire rope 16 is fixed on upper junction plate by lifting bolt 10
On 15, other end is fixed on lower connecting plate 8 by lifting bolt 10.Each tensile steel wire rope 16 is tensioned, and makes six roots of sensation tension steel
The tension force sum of cord 16 is equal to the vertical design dead load of three-dimensional vibration isolating device described in this example, and after being tensioned, each tension
Axis of the steel wire rope 16 each parallel to laminated rubber bearing 17.
Referring to Fig. 1～6, the vertical earthquake isolating bearing includes fairlead 1, the annular edge of a wing 2, base 3, cylindrical helical compression
Spring 4 and backpressure device.
Referring to Fig. 1～3, described fairlead 1 is circular tube shaped, and its upper end radially shrinks to have been formed spacing and be oriented to work
The annular edge of a wing 2, lower end extends radially outwards to form a ring flange 5.Swell upwards to form inversion in the middle part of described base 3
Washbowl shape, the edge of surrounding is provided with installing hole 6, and described fairlead 1 is fixed on its protuberance by the ring flange 5 set by lower end
Middle part upper surface.
Referring to Fig. 1～3, described cylindrical helical compression spring 4 is located in fairlead 1, the cylindrical helical compression bullet
The upper end of spring 4 is provided with and the dynamic driving pressing plate 7 for coordinating of the fairlead 1, and the middle part of 8 lower surface of the lower connecting plate is led to described
Extend the projection of a cylinder into set 1, the projection is fixed together by screw with described driving pressing plate 7.Referring to
Fig. 1, is provided with the gap 14 more than amplitude between lower connecting plate 8 and the annular edge of a wing 2；In order to avoid pressure is driven described in vibration processes
Shock is produced between plate 7 and the annular edge of a wing 2, between the driving pressing plate 7 and the annular edge of a wing 2, anticollision gap 13 is provided with.
Referring to Fig. 1～3, described backpressure device is located in fairlead 1, and its concrete scheme is as follows：
Referring to Fig. 1～7, described backpressure device is only used as hanging for steel wire rope break-in element by three precompressed steel wire ropes 9, three
10, one block of floating back-pressure steel plate 11 of ring screw, another three lifting bolts 10 of 9 one, fixed precompressed steel wire rope and a steel wire rope
Self-locking tensioning anchorage 18 is constituted.Wherein,
Described floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and base 3；
Described three are only used as the lifting bolt 10 of steel wire rope break-in element and fix around the axisymmetrical of described fairlead 1
On the driving pressing plate 7.
Referring to Fig. 7～11, each steel wire rope self-locking tensioning anchorage 18 is locked by the first self-centering locking fixture, the second self-centering
Clamper, anti-torsion compression spring 18-1 and plane bearing 18-2 composition, wherein：
The first described self-centering locking fixture has a connecting seat 18-3, and the edge of connecting seat 18-3 is provided with installing hole
18-12, is provided with axially extending cylindrical boss 18-4 in the middle part of lower end, the internal of boss 18-4 is provided with first along axial line
Taper hole 18-5, is provided with the first taper jaw 18-7 being made up of 3 claw pieces in the taper hole, the outer peripheral face of the boss 18-4 is arranged
There is tensioning swivel nut 18-6, be threadedly coupled therebetween；Wherein, the microcephaly of first tapered clamp 18-7 points to connecting seat 18-3,
The outer peripheral face of the tensioning swivel nut 18-6 is regular hexagon；
The second described self-centering locking fixture has a tapered sleeve 18-8, internal being sequentially provided with along axis of tapered sleeve 18-8
One section of second taper hole 18-13 and one section of screwed hole；Wherein, the second taper being made up of 3 claw pieces is provided with the second taper hole 18-13
Jaw 18-9, is provided with hollow bolt 18-10, the head of hollow bolt 18-10 and the second taper jaw 18- in described screwed hole
9 major part is relative, and the outer peripheral face of the tapered sleeve 18-8 is regular hexagon；
Described plane bearing 18-2 is by ball-retainer component 18-11 and is respectively provided at tensioning swivel nut 18-6 and tapered sleeve
Ring raceway on 18-8 relative end face is constituted, wherein described ring raceway and the rolling in ball-retainer component 18-11
Pearl matches；
The second self-centering locking fixture is located at the outside of tensioning swivel nut 18-6 heads, and the second taper jaw 18-9
Microcephaly is consistent with the sensing of the first taper jaw 18-7 microcephalies；Described plane bearing 18-2 be located at the tensioning swivel nut 18-6 and
Between tapered sleeve 18-8, described anti-torsion compression spring 18-1 is located in the endoporus of tensioning swivel nut 18-6.When precompressed steel wire rope 9 is by
Anti- centre bore and the second tapers for turning round compression spring 18-1 and plane bearing 18-2 of Jing between the calvus of one taper jaw 18-7
After passing between the calvus of jaw 18-9, under 9 tension force effect of precompressed steel wire rope, an anti-work for turning round compression spring 18-1
On the first taper jaw 18-7, other end is acted on tapered sleeve 18-8.
Referring to Fig. 1,4 and Fig. 6, the connecting seat 18-3 of the steel wire rope self-locking tensioning anchorage 18 is fixed on base 3 by screw
The lower surface at the middle part of protuberance, and distance of the lower surface at the middle part of the protuberance of the base 3 apart from 3 bottom surface of base is more than the steel
Cord self-locking is tensioned the height of anchorage 18.
Referring to Fig. 1～6, the axisymmetrical on the floating back-pressure steel plate 11 around fairlead 1 is provided with three lifting bolts 10；
The outside of the base 3, the position passed through in the axis of fairlead 1 are provided with the steel wire rope self-locking tensioning anchorage 18；Three pre-
Compressed steel cord 9 is distributed in 4 centre bore of cylindrical helical compression spring with broken line state, and the one of each precompressed steel wire rope 9
Head system connects and is fixed on floating back-pressure steel plate 11 on set lifting bolt 10, and other end passed around relative one as steel wire rope
Turn back after the lifting bolt 10 of break-in element, then three precompressed steel wire ropes 9 beam that is listed as restricting is led from floating back-pressure steel plate 11
The position passed through to the axis of set 1 passes through floating back-pressure steel plate 11, is anchored on base 3 by steel wire rope self-locking tensioning anchorage 18；
On described floating back-pressure steel plate 11, the through hole 12 of precompressed steel wire rope 9, the through hole 12 are provided through through position in the rope beam
Aperture more than it is described rope beam diameter；On described base 3, the anchor hole of anchoring rope beam is provided with through position in the rope beam
3-1。
Referring to Fig. 1～6 and with reference to Fig. 7～11, in order to realize the purpose of predeterminable vertical initial stiffness, above-mentioned three precompressed
The installation of steel wire rope 9 and tensioning method are as described below：(1) elder generation is according to the default vertical initial stiffness of need and cylindrical helical compression
The characterisitic parameter of spring 4, calculates precompressed steel wire rope 9 and meets the tension force for presetting vertical initial stiffness；(2) will be described perpendicular by Fig. 1
Assemble to shock isolating pedestal, make the rope beam that the other end of three precompressed steel wire ropes 9 constitutes side by side anchorage is tensioned from steel wire rope self-locking
Pass in 18 the first taper jaw 18-7, the centre bore of the second taper jaw 18-9 and hollow bolt 18-10；Then, (3)
The fag end system of the precompressed steel wire rope 9 for exposing is connected on traction stretching machine, and is supervised using tension detecting instrument while tensioning is drawn
Depending on the tension force of precompressed steel wire rope 9；Needed for the precompressed steel wire rope 9 is tensioned to default vertical initial stiffness during tension force, move forward
Dynamic second self-centering locking fixture, while adjust turning tensioning swivel nut 18-6 so that plane bearing 18-2 is clamped tightly at described
Between tensioning swivel nut 18-6 and tapered sleeve 18-8, and anti-torsion compression spring 18-1 is compressed, and the tension force produced by which promotes first to bore
Precompressed steel wire rope 9 is clamped by clevis pawl 18-7 reaches, and turning described hollow bolt 18-10 thereafter will be positioned at the second taper jaw
In 18-9, precompressed steel wire rope 9 is pressed from both sides extremely；Traction stretching machine is removed, unnecessary precompressed steel wire rope 9 is blocked, you can by cylindrical helical pressure
Contracting spring 4 is clamped between driving pressing plate 7 and floating back-pressure steel plate 11 all the time；(4) Fig. 1 and 4 is finally pressed by laminated rubber shock insulation
Bearing is arranged on the top of the lower connecting plate 8, obtains final product the three-dimensional isolation device.
Referring to Fig. 1 and Fig. 7～11, in the work progress for installing shock isolating pedestal or in routine maintenance procedure, if it find that
The tension force of precompressed steel wire rope 9 is not enough, you can the tensioning swivel nut 18-6 turned in steel wire rope self-locking tensioning anchorage 18 is adjusted.
When presetting vertical initial stiffness, the tension force sum of three precompressed steel wire ropes 9 need to be filled more than or equal to the three-dimensional isolation
Put born erect static load lotus.
Under ideal conditions, the vertical ripple of earthquake should be unable to occur to building during building transmission by earthquake isolating equipment
Displacement.Based on this, the operation principle of this example three-dimensional isolation device vertical earthquake isolating is as follows：Referring to Fig. 1, when the vertical ripple of earthquake is produced
When raw dynamic loading overcomes the vertical initial stiffness, if the dynamic loading above pushes away base 3 along the axis of fairlead 1, drive
The reaction force of pressing plate 7 just compresses downwards cylindrical helical compression spring 4, and building is motionless with shifting on ground for base 3；If
Axis drop-down base 3 of the dynamic loading along fairlead 1, precompressed steel wire rope 9 is then by the suspension ring spiral shell as steel wire rope break-in element
Nail 10 is reversely sling floating back-pressure steel plate 11, compresses cylindrical helical compression spring 4 upwards, and base 3 is moved down with ground, but is built
Thing is still motionless.As can be seen here, the compressible cylindrical helical compression spring when P wave makes ground that up-down vibration to occur
Produce elastic deformation and consume energy.In the same manner, when building is rocked in the presence of wind shake or flatly seismic wave, no matter to which to described
The dynamic loading that three-dimensional isolation device is produced is that pulling force or the compressible cylindrical helical compression spring of pressure produce elastic deformation
And consume energy.
Example 2
Referring to Figure 12～15, this example has been substantially carried out following some improvement on the basis of example 1：(1) by precompressed steel wire rope 9
The six roots of sensation is increased to by three；(2) lifting bolt 10 as steel wire rope break-in element is replaced with into U-shaped component 19；(3) will be described
Backpressure device is changed accordingly to：
Described backpressure device is only used as the U-shaped component 19, of steel wire rope break-in element by six roots of sensation precompressed steel wire rope 9, six
The lifting bolt 10 and a fixed precompressed steel wire rope 9 of 9 one, the fixed precompressed steel wire rope of block floating back-pressure steel plate 11, six is another
The steel wire rope self-locking tensioning anchorage 18 of head is constituted；Wherein,
Floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and base 3；
The six U-shaped components 19 for being only used as steel wire rope break-in element fix the drive around the axisymmetrical of described fairlead 1
On dynamic pressure plate 7；Referring to Figure 15, described U-shaped component 19 is made up of round steel bending, on the driving pressing plate 7, is arranging U-shaped structure
The relevant position of part 19 is provided with the circular hole matched with 19 two sides of U-shaped component, and the U-shaped component 19 is inserted in the circular hole,
The two is welded and fixed together；
Axisymmetrical on the floating back-pressure steel plate 11 around fairlead 1 is provided with six lifting bolts 10；The base 3
Outside, the position passed through in the axis of fairlead 1 are provided with the steel wire rope self-locking tensioning anchorage 18；Six roots of sensation precompressed steel wire rope 9 with
Broken line state is distributed in 4 centre bore of cylindrical helical compression spring, and of each precompressed steel wire rope 9 is to connect to be fixed on
On floating back-pressure steel plate 11 on set lifting bolt 10, other end passed around relative one as the U of steel wire rope break-in element
Turn back after shape component 19, then six roots of sensation precompressed steel wire rope 9 is listed as axis Jing of the beam from fairlead 1 on floating back-pressure steel plate 11 that restrict
The position crossed passes through floating back-pressure steel plate 11, is anchored on base 3 by steel wire rope self-locking tensioning anchorage 18；Described floating back-pressure
On steel plate 11, the through hole 12 of precompressed steel wire rope 9 is provided through through position in the rope beam, the aperture of the through hole 12 is more than described
The diameter of rope beam；On described base 3, the anchor hole 3-1 of anchoring rope beam is provided with through position in the rope beam.
This example other implementations other than the above are same as Example 1.
The operation principle for being used for the earthquake isolating equipment of Antiseismic building described in this example is same as Example 1, and the public can refer to example 1 voluntarily
Analysis.
Example 3
Referring to Figure 16～20, this example has been substantially carried out following some improvement on the basis of example 1：(1) will be used as steel wire rope
The lifting bolt 10 of break-in element replaces with fixed pulley 20；(2) described backpressure device is changed accordingly to：
Described backpressure device is only used as 20, one piece of the fixed pulley of steel wire rope break-in element by four precompressed steel wire ropes 9, four
The lifting bolt 10 of 9 one, the fixed precompressed steel wire rope of floating back-pressure steel plate 11, four and fixed 9 other end of precompressed steel wire rope
Steel wire rope self-locking tensioning anchorage composition；Wherein,
Floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and base 3；
Four fixed pulleys 20 for being only used as steel wire rope break-in element fix the driving around the axisymmetrical of described fairlead 1
The lower surface being located on pressing plate 7 in 4 centre bore of the cylindrical helical compression spring；Wherein, described fixed pulley 20 is hinged on
On support, the support is welded on driving pressing plate 7；
Axisymmetrical on the floating back-pressure steel plate 11 around fairlead 1 is provided with four lifting bolts 10；The base 3
Outside, the position passed through in the axis of fairlead 1 are provided with the steel wire rope self-locking tensioning anchorage 18；Four precompressed steel wire ropes 9 with
Broken line state is distributed in 4 centre bore of cylindrical helical compression spring, and of each precompressed steel wire rope 9 is to connect to be fixed on
On floating back-pressure steel plate 11 on set lifting bolt 10, other end passed around relative determining as steel wire rope break-in element
Turn back after pulley 20, then four precompressed steel wire ropes 9 are listed as restricting beam from the axis process of fairlead 1 on floating back-pressure steel plate 11
Position pass through floating back-pressure steel plate 11, by steel wire rope self-locking tensioning anchorage 18 be anchored on base 3；Described floating back-pressure steel
On plate 11, the through hole 12 of precompressed steel wire rope 9 is provided through through position in the rope beam, the aperture of the through hole 12 is more than the rope
The diameter of beam；On described base 3, the anchor hole 3-1 of anchoring rope beam is provided with through position in the rope beam.
This example other implementations other than the above are same as Example 1.
The operation principle for being used for the earthquake isolating equipment of Antiseismic building described in this example is same as Example 1, and the public can refer to example 1 voluntarily
Analysis.
Claims (2)
1. the three-dimensional isolation device that a kind of vertical initial stiffness can be adjusted, the three-dimensional isolation device include that what is be sequentially connected in series up and down folds
Layer rubber earthquake isolation support and vertical earthquake isolating bearing；Wherein,
Described laminated rubber damping bearing includes upper junction plate, lower connecting plate, is clamped in the lamination rubber being vertically connected between plate
Rubber cushion and at least three tensile steel wire ropes for being distributed on laminated rubber bearing surrounding；One company of being fixed on of the tensile steel wire rope
On fishplate bar, other end is fixed on lower connecting plate, and the line of upper and lower two fixing point is parallel to the axis of the laminated rubber bearing
Line；
Described vertical earthquake isolating bearing includes base, and the upper surface of the base is provided with upwardly extending fairlead；The fairlead
Inside is coaxially provided with cylindrical helical compression spring, and the top of the cylindrical helical compression spring is provided with driving pressing plate；Described
The middle part of the lower connecting plate lower surface of laminated rubber damping bearing extends one raised into the fairlead, the projection with it is described
Pressing plate is driven to be fixedly connected；
Characterized in that,
Backpressure device is additionally provided with the fairlead of the vertical earthquake isolating bearing, the backpressure device includes the pre- steel wire of more than three
Rope, the steel wire rope break-in element equal with precompressed steel wire rope quantity, a steel wire rope self-locking tensioning anchorage and one piece of floating back-pressure
Steel plate, wherein,
Described floating back-pressure steel plate is located between cylindrical helical compression spring and base；
Described steel wire rope break-in element is fixed on described driving pressing plate around the axisymmetrical of described fairlead；
Described steel wire rope self-locking tensioning anchorage is by the first self-centering locking fixture, the second self-centering locking fixture, anti-torsion compression
Spring and plane bearing composition, wherein：
A the first self-centering locking fixture described in) has a connecting seat, is provided with axially extending cylinder in the middle part of the connecting seat one end
Shape boss, the internal of the boss are provided with the first taper jaw being made up of 3～5 claw pieces along axial line, and outer peripheral face is arranged with to be opened
Tight swivel nut；Wherein, the microcephaly of first tapered clamp points to connecting seat, and the outer peripheral face of the tensioning swivel nut is regular hexagon；
B the second self-centering locking fixture described in) has a tapered sleeve, and the internal of the tapered sleeve is sequentially provided with by 3～5 claws along axis
The second taper jaw and hollow bolt of piece composition, wherein, the head and the major part of the second taper jaw of described hollow bolt
Relatively, the outer peripheral face of the tapered sleeve is regular hexagon；
C the plane bearing described in) is by ball-retainer component and the ring being respectively provided on the tensioning swivel nut end face relative with tapered sleeve
Shape raceway is constituted, wherein described ring raceway is matched with the ball in ball-retainer component；
D) the second self-centering locking fixture is located at the outside of the tensioning swivel nut head, and the second taper jaw microcephaly and the
The sensing of one taper jaw microcephaly is consistent；Described plane bearing is located between the tensioning swivel nut and tapered sleeve, described anti-torsion
Compression spring is located in the endoporus of tensioning swivel nut；Compression bullet is turned round when Jing is anti-between calvus of the precompressed steel wire rope by the first taper jaw
After passing between the calvus of the centre bore and the second taper jaw of spring and plane bearing, under the effect of precompressed steel wire rope tension,
Anti- turn round compression spring one is acted on the first taper jaw, and other end is acted on tapered sleeve；
Described precompressed steel wire rope is distributed in the centre bore of cylindrical helical compression spring with broken line state, and each precompressed
One axisymmetrical around described fairlead of steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relative one
Turn back after individual steel wire rope break-in element, then all of precompressed steel wire rope is listed as beam of restricting, from fairlead on floating back-pressure steel plate
The point that axis is passed through is anchored on base through floating back-pressure steel plate by steel wire rope self-locking tensioning anchorage；Described floating back-pressure
On steel plate, the position passed through in the rope beam is provided through the through hole of the rope beam, and the aperture of the through hole is more than the rope beam
Diameter；
By precompressed steel wire tensioning to needed for vertical initial stiffness is set tension force, make described cylindrical helical compression spring all the time
It is clamped between driving pressing plate and floating back-pressure steel plate；
The tensile steel wire rope is tensioned the precompression provided for laminated rubber bearing equal to design dead load.
2. the three-dimensional isolation device that a kind of vertical initial stiffness according to claim 1 can be adjusted, it is characterised in that described
Steel wire rope break-in element be fixed pulley, lifting bolt or U-shaped component.
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| CN114892800A (en) * | 2022-04-20 | 2022-08-12 | 山东建筑大学 | Assembled beam-column joint damping structure and construction method |
| CN115162816A (en) * | 2022-08-15 | 2022-10-11 | 中国建筑西南设计研究院有限公司 | Prestress tensile anti-overturning shock isolation device and construction method thereof |
| IT202100025130A1 (en) * | 2021-09-30 | 2023-03-30 | Univ Degli Studi Roma La Sapienza | Multidirectional hysteretic negative stiffness heatsink |
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Application publication date: 20170329 |