CN106381929A - Three-dimensional base isolation support with preset vertical initial rigidity - Google Patents
Three-dimensional base isolation support with preset vertical initial rigidity Download PDFInfo
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- CN106381929A CN106381929A CN201610903607.XA CN201610903607A CN106381929A CN 106381929 A CN106381929 A CN 106381929A CN 201610903607 A CN201610903607 A CN 201610903607A CN 106381929 A CN106381929 A CN 106381929A
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- steel wire
- wire rope
- plate
- fairlead
- precompressed
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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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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- Environmental & Geological Engineering (AREA)
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- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a three-dimensional base isolation support with preset vertical initial rigidity. The three-dimensional base isolation support comprises a vertical base isolation support and a laminate rubber base isolation support mutually connected in series and is characterized in that a back pressure device is also arranged in a guide sleeve of the vertical base isolation support, wherein the back pressure device comprises more than three prepressing steel wire ropes, steel wire rope turning elements of the same number as the prepressing steel wire ropes and a floating back pressure steel plate; the prepressing steel wire ropes are in a fold line state; one end of each prepressing steel wire rope is symmetrically fixed on the floating back pressure steel plate around the axis of the guide sleeve, and the other end bypasses the opposite steel wire rope turning element and turns back and then passes through the floating back pressure steel plate through the fixing point of the prepressing steel wire rope on the floating back pressure steel plate to be fixed on a base; and the prepressing steel wire rope is tensioned to the tension required for the preset vertical initial rigidity so that a cylindrical rubber elastomer is always clamped between a drive pressure plate and the floating back pressure steel plate.
Description
Technical field
The present invention relates to a kind of building vibration proof (or vibrations) device is and in particular to one kind by laminated steel and rubber pillow and is erected
Three-dimensional isolation device to 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, the level that can only isolate seismic wave is divided
Amount.Raising earthquake Multi-attributes being recognized with people, three-dimensional isolation device is gradually paid attention to by this area researcher.?
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 Publication No. CN 102409777 A discloses a kind of structure three-dimensional shock insulation and antidumping dress
Put, the main body mechanism of this device is in series with spring shock-proof bearing 15 by laminated rubber damping bearing 14, described agent structure
Upper and lower side be respectively arranged with upper junction plate 1 and lower connecting plate 18 it is characterised in that：Described upper junction plate 1 and lower connecting plate 18
Between be provided with around the agent structure surrounding uniform tensile steel wire rope 16 of dislocation, described tensile steel wire rope 16 pole in the horizontal direction
Limit deflection is more than the horizontal shear elastic deformation amount of main body mechanism.Although scheme can improve three-dimensional isolation described in this 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, be not easy to default earthquake intensity and reduce 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 ", this antivibrator includes shell, the load connecting rod being located inside the shell and two groups of disk springs, described, and described load connects
The middle part of bar is provided with the regulation gear being connected therewith, and the load connecting rod of described regulation gear both sides is respectively equipped with and load
The left-handed nut of connecting rod screw thread cooperation and right-handed nut, described two groups of disk springs are respectively provided at described left-handed nut and dextrorotation
The outside of nut, and be clamped in respectively between described left-handed nut or right-handed nut and the shrouding of outer casing end.Only need switch
Regulation gear in load connecting rod, makes described left-handed nut and right-handed nut mutually draw close or away from i.e. two groups of dishes of scalable
The pretightning force of spring thus the damped coefficient of damping adjusting device, to meet the use demand of different frequency and various amplitude.But
This invention still has following deficiency：1st, described load connecting rod is to keep balance under the collective effect of two groups of disk springs,
Although the pretightning force of two groups of disk springs can be adjusted, adjust, two groups of disk springs are to load connecting rod anyway
Active force is all one group of power equal in magnitude, in opposite direction, and only need to apply any external force in load connecting rod all can destroy this
Plant balance, so that two groups of disk springs is deformed, so described antivibrator cannot preset initial stiffness；2nd, necessary in this invention
With the use of two groups of disk springs, all could be provided damping when antivibrator presses or draws load, this not only causes necessarily
Waste, so that the length of antivibrator is greatly increased.
The application for a patent for invention of Publication No. CN101457553A discloses one kind, and " spring stiffness adjustable tuning quality subtracts
Shake device ", this vibroshock 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 antivibrator changes its damping ratio, changes its rigidity by the effective active length changing spring, its
The means of the middle effective active length changing spring have three kinds, and one is section spring being located in solidification cylinder using curing materials
Solidification, two fill in constraint block toward intracardiac in helical spring, and the two interference fit, make the one section of spring contacting with constraint block
Lost efficacy, three is to arrange helical raised on constraint block surface, and helical raised is stuck between spring wire, makes card between spring wire
There is one section of spring failure of helical raised.As can be seen here, although the spring in this 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.
Content of the invention
The technical problem to be solved is the three-dimensional shock isolation support providing a kind of vertical initial stiffness predeterminable, should
Three-dimensional isolation device both compressible passive energy dissipations, and stretchable passive energy dissipation；But also maintain spring in vertical earthquake isolating bearing
Effective active length.
The present invention solve above-mentioned technical problem technical scheme be：
A kind of predeterminable three-dimensional shock isolation support of vertical initial stiffness, this three-dimensional isolation device includes being 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 folded between plate
Layer rubber blanket and at least three tensile steel wire ropes being distributed on laminated rubber bearing surrounding；One of described 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 points is parallel to described laminated rubber bearing
Axis；
Described vertical earthquake isolating bearing includes base, and the upper surface of this base is provided with upwardly extending fairlead；Described lead
It is coaxially provided with spring to set is internal, the top of this spring is provided with driving pressing plate；The lower connection of described laminated rubber damping bearing
The middle part of plate lower surface forms a projection to described fairlead sunken inside, and this raised with described driving pressing plate is fixedly connected；
It is characterized in that,
Described spring is cylindrical rubber elastomer, and the external diameter of this cylindrical rubber elastomer is less than the interior of fairlead
Footpath, forms therebetween an annular space；
It is additionally provided with backpressure device in the fairlead of described vertical earthquake isolating bearing；Described backpressure device includes more than three pre-
The compressed steel cord steel wire rope break-in element equal with precompressed steel wire rope quantity and one block of floating back-pressure steel plate, wherein,
Described floating back-pressure steel plate is located between cylindrical rubber elastomer and base；
Described steel wire rope break-in element is on the fixing described driving pressing plate of axisymmetrical of described fairlead；
Described precompressed steel wire rope is distributed in described annular space with broken line state, and the one of each precompressed steel wire rope
Head is fixed on floating back-pressure steel plate around the axisymmetrical of described fairlead, and other end passed around a relative steel wire rope and becomes
Turn back to after element, then from this precompressed steel wire rope, the fixing point on floating back-pressure steel plate is other passes through floating back-pressure Interal fixation
On described base；On described floating back-pressure steel plate, it is equipped with through pre- compressed steel each precompressed steel wire penetrating position
The through hole of cord, the aperture of this through hole is more than the diameter of described precompressed steel wire rope；
It is respectively adopted dynamic cooperation between described fairlead and driving pressing plate and floating back-pressure steel plate；
By precompressed steel wire tensioning to presetting tension force needed for vertical initial stiffness, described cylindrical rubber elastomer is made to begin
It is clamped in eventually between driving pressing plate and floating back-pressure steel plate；
Described tensile steel wire rope tensioning is provided the precompression being equal to design dead load for laminated rubber bearing.
The operation principle of above-mentioned three-dimensional shock isolation support vertical earthquake isolating is as follows：When vertical dynamic loading 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 rubber elastomer；When
Dynamic loading along the axis of fairlead act on opposite to each other when, pulling force is delivered to driving pressing plate via tensile steel wire rope, drives and moves on pressing plate,
And precompressed steel wire rope is then reversely sling floating back-pressure steel plate compression cylindrical rubber elastomer by steel wire rope break-in element.Thus
It can be seen that, axial dynamic loading no matter relatively or acts on shock isolating pedestal opposite to each other, cylindrical rubber elastomer can be compressed so as to
Elastic deformation is occurred to consume energy.
From above-mentioned operation principle, logical on the precompressed steel wire rope described in work process and described floating back-pressure steel plate
The hole wall in hole can not produce friction, otherwise interferes with moving up and down of floating back-pressure steel plate, and therefore described through-hole diameter compares institute
The diameter stating precompressed steel wire rope is how many greatly, should be not disturb and to affect moving up and down of floating back-pressure steel plate to be 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 predeterminable three-dimensional shock isolation support of vertical initial stiffness of the present invention, wherein said precompressed steel wire rope two
Similar lifting bolt system can may also be employed and connects fixation using being welded and fixed, but, if two all adopts welding or lifting bolt
System connects fixing dead, then will reach the purpose of default initial stiffness, be necessary for precalculating and strictly control described pre- steel wire
The length ability pre-set tension of rope, and then reach the purpose of default initial stiffness.But, in actual production debugging process,
Following two hang-ups are then had using the purpose that the method controlling described precompressed rope capacity reaches default initial stiffness, one is
Welding or be that the process connecing can produce error, even if two are to control welding or are the produced error of the process connecing, but steel wire rope
The change of its characterisitic parameter is also resulted in cut-out, placement process.In order to solve above-mentioned technical barrier, one of the present invention changes
Entering scheme is：
The other end of the precompressed steel wire rope of described vertical earthquake isolating bearing is fixed on base by steel wire rope self-locking anchorage；Described
Steel wire rope self-locking anchorage be made up of installing hole, jaw and check bolt, wherein,
Described installing hole is located on base；Described installing hole is made up of one section of taper hole and one section of screwed hole, wherein institute
State taper hole positioned at the side by fairlead, and tip points in described fairlead, described screwed hole is located remotely from the another of fairlead
Side；
Described jaw is to match cone with described taper hole, and is made up of 3～5 lobes, and it is provided with folder along axis in vivo
Hold the clamping hole of precompressed steel wire rope；
Described check bolt is matched with described screwed hole, and is provided with diameter greater than pre- compressed steel accordingly along axis in vivo
The circular hole of cord diameter；
Described jaw is arranged in described taper hole, and check bolt is arranged on described screw thread in the hole.
From above-mentioned improvement project, one of each precompressed steel wire rope is fixed in floating counter, other end
Passed by the clamping hole of described steel wire rope self-locking anchorage and circular hole, so the fag end system exposed can be connected on traction tensioning
On machine, while drawing tensioning, tension force is monitored using tension detecting instrument.When described precompressed steel wire tensioning is initially firm to presetting
Needed for degree during tension force, turn check bolt and described jaw can be promoted to clamp and locked precompressed steel wire rope, even if pre- steel wire
Rope also will not loosen in the vibration processes of relaxation repeatedly.
For preventing described cylindrical rubber elastomer two from sliding on described driving pressing plate and floating back-pressure steel plate, this
Another bright improvement project is：The described driving pressing plate surface relative with floating back-pressure steel plate is equipped with a locating ring, described
Two of cylindrical rubber elastomer is embedded in described locating ring respectively.
The three-dimensional shock isolation support that the vertical initial stiffness of the present invention is predeterminable has 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；Can effectively build depletion high level
Build the huge pulling force that thing produces to building foundation due to waving；And only need a cylindrical rubber elastomer, vertical extension is little,
Good stability.
(2) after vertical dynamic loading is more than the defensive ability/resistance ability of default vertical initial stiffness, in the present invention, vertical earthquake isolating props up
The bidirectional elastic deformation of seat is symmetrical, does not therefore affect the effect of its compression power consumption because of the change of the positive negative direction of vertical load
Really；
(3) as long as the length changing precompressed steel wire rope can change the vertical initial stiffness of whole bearing, external force is overcoming
Vibration isolating suspension cannot be made before this initial stiffness to produce vertical deformation, effectively inhibit building in small earthquake and weak wind shake
The lower generation of effect is rocked, and the shockproof grade of wind resistance of predeterminable building significantly reduces the shockproof cost of wind resistance；
(4), during presetting initial stiffness, effective active length of described cylindrical rubber elastomer is constant, will not change
The original characterisitic parameter of cylindrical rubber elastomer.
(5) thing that can effectively buffer building rocks stretching and the compression shock that trend produces to building basis, further
Reduce the risk that building topples.
Brief description
Fig. 1～6 are the structural representation of a specific embodiment of three-dimensional shock isolation support of the present invention, wherein, Fig. 1
For front view (the D D rotation of Fig. 3 is cutd open), Fig. 2 is the A A sectional view (omitting precompressed steel wire rope) of Fig. 1, and Fig. 3 is the B B of Fig. 1
Sectional view (omits precompressed steel wire rope), and Fig. 4 is the C C sectional view (omitting tensile steel wire rope) of Fig. 1, and Fig. 5 is the knot of Fig. 1 local I
Structure enlarged drawing, Fig. 6 is the schematic enlarged-scale view of Fig. 1 local II.
Fig. 7～12 are the structural representation of second specific embodiment of three-dimensional shock isolation support of the present invention, wherein, figure
7 is front view (section view), and Fig. 8 is the E E sectional view (omitting precompressed steel wire rope) of Fig. 7, and Fig. 9 is that the F F sectional view of Fig. 7 (saves
Slightly precompressed steel wire rope), Figure 10 is the G G cutaway view Amplified image of Fig. 8, and Figure 11 is the schematic enlarged-scale view of Fig. 7 local III, and Figure 12 is figure
11 H H cutaway view Amplified image.
Figure 13～16 be three-dimensional shock isolation support of the present invention the 3rd specific embodiment structural representation, its
In, Figure 13 is front view (section view), and Figure 14 is the I I sectional view (omitting precompressed steel wire rope) of Figure 13, and Figure 15 is the J J of Figure 13
Sectional view (omits precompressed steel wire rope), and Figure 16 is the schematic enlarged-scale view of Figure 13 local IV.
Specific embodiment
Example 1
Referring to Fig. 1, the three-dimensional shock isolation support in this example is propped up by the laminated rubber damping bearing connected up and down and vertical earthquake isolating
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 between lower connecting plate and six roots of sensation tensile steel wire rope 16；Wherein, described upper junction plate 15 and lower connecting plate 8
All in the form of annular discs, the edge of upper junction plate 15 is provided with installing hole 6；The main body of described 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 protection during molding sulfuration
Layer 17-3.The upper and lower ends face of described laminated rubber bearing 17 main body is equipped with connection steel plate 17-4, described two pieces of connection steel plate 17-
4 be fixed by screws in upper junction plate 15 and lower connecting plate 8 respectively together with.Described six roots of sensation tensile steel wire rope 16 is around lamination rubber
The axis of rubber cushion 17 is symmetrically distributed in its surrounding, and one of each tensile steel wire rope 16 is fixed on by lifting bolt 10
On connecting plate 15, other end is fixed on lower connecting plate 8 by lifting bolt 10.The tensioning of each tensile steel wire rope 16, makes the six roots of sensation
The tension force sum of tensile steel wire rope 16 is equal to the vertical design dead load of three-dimensional vibration isolating device described in this example, and after tensioning, each
Root tensile steel wire rope 16 is each parallel to the axis of laminated rubber bearing 17.
Referring to Fig. 1～6, described vertical earthquake isolating bearing includes fairlead 1, base 3, cylindrical rubber elastomer 4 and back-pressure
Device.
Referring to Fig. 1～3, described fairlead 1 is circular tube shaped, and its upper end is radially shunk and formed spacing and guiding work
The annular edge of a wing 2, lower end extends radially outwards formation one ring flange 5.Described base 3 is discoid, and the edge of surrounding sets
There is installing hole 6, described fairlead 1 passes through the middle part on ring flange 5 surface fixed thereon set by lower end.
Referring to Fig. 1～3, described cylindrical rubber elastomer 4 by one piece of cylindrical solid rubber block 4-1 and is located at solid
The two end plates 4-2 composition at block rubber two ends, described two end plates 4-2 is connected with two sulfuration of solid rubber block 4-1 respectively
Together.Described cylindrical rubber elastomer 4 is coaxially located in fairlead 1, and the upper end of this cylindrical rubber elastomer 4 is provided with
Move the driving pressing plate 7 of cooperation with described fairlead 1.The external diameter of described cylindrical rubber elastomer 4 is less than the internal diameter of fairlead 1,
Between form an annular space.The middle part of described lower connecting plate 8 lower surface forms a tea to described fairlead 1 sunken inside
The raised 8-1 of cup-shaped, this raised 8-1 is fixed together by screw with described driving pressing plate 7.
Referring to Fig. 1, between lower connecting plate 8 and the annular edge of a wing 2, it is provided with the gap 14 more than amplitude；In order to avoid vibration processes
Described in drive to produce between pressing plate 7 and the annular edge of a wing 2 and clash into, be provided between anticollision between described driving pressing plate 7 and the annular edge of a wing 2
Gap 13.
Referring to Fig. 1～3, described backpressure device is located in described annular space, and its concrete scheme is as follows：
Referring to Fig. 1～6, described backpressure device is only used as hanging of steel wire rope break-in element by three precompressed steel wire ropes 9, three
Another six lifting bolts 10 of 10, one block of floating back-pressure steel plate 11 of ring screw and fixing precompressed steel wire rope 9 form.Wherein,
Described floating back-pressure steel plate 11 is located between cylindrical rubber elastomer 4 and base 3, and with described fairlead 1
Dynamic cooperation；
The lifting bolt 10 that described three are only used as steel wire rope break-in element is fixed around the axisymmetrical of described fairlead 1
On described driving pressing plate 7；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with three lifting bolts 10, on described base 3
Another three lifting bolts 10 are correspondingly provided with by the relative position of set three lifting bolts 10 on floating back-pressure steel plate 11；Three
Root precompressed steel wire rope 9 is all distributed in described annular space with broken line state, and, one of each precompressed steel wire rope 9 is to connect
Be fixed on a set lifting bolt 10 on floating back-pressure steel plate 11, other end bypass relative as steel wire rope break-in unit
Turn back after the lifting bolt 10 of part, then this precompressed steel wire rope 9 corresponding bottom by its fixing point on floating back-pressure steel plate 11
On seat 3, the position of set lifting bolt 10 passes through floating back-pressure steel plate 11, is to connect fixing set on the base 3 lifting bolt 10
On；On described floating back-pressure steel plate 11, it is equipped with through precompressed steel wire rope 9 through position in each precompressed steel wire rope 9
Through hole 12, the aperture of this through hole 12 is more than the diameter of described precompressed steel wire rope 9.
Described driving pressing plate 7 surface relative with floating back-pressure steel plate 11 is equipped with internal diameter and cylindrical rubber elastomer 4
The locating ring 18 that matches of end plate 4-2 external diameter, the end plate 4-2 at described cylindrical rubber elastomer 4 two is embedded in driving respectively
In locating ring 18 on pressing plate 7 and floating back-pressure steel plate 11.
Referring to Fig. 1～3, in order to realize the purpose of predeterminable vertical initial stiffness, above-mentioned three-dimensional shock isolation support installation method
As follows：(1) first cylindrical rubber is determined according to the coefficient of elasticity needing default vertical initial stiffness and cylindrical rubber elastomer 4
Elastomer 4 decrement, and then calculate the length that each precompressed steel wire rope 9 meets vertical initial stiffness requirement；(2) press Fig. 1
After cylindrical rubber elastomer 4, described backpressure device and driving pressing plate 7 are connected by～3, more repeatedly adjust, make each in advance
The physical length of compressed steel cord 9 is equal with computational length, is then on the lifting bolt 10 connecing on the base 3, and with common
Rope cramp (in figure there is not display) is fixing dead, cylindrical rubber elastomer 4 is clamped in described driving pressing plate 7 all the time anti-with floating
Between laminated steel 11；(3) part assembling step (2) is put in fairlead 1, and is directed to cover 1 and is fixed on one with base 3
Rise, described lower connecting plate 8 is fixed together with driving pressing plate 7；(4) finally by Fig. 1 and 4, laminated rubber damping bearing is installed
Above described lower connecting plate 8, obtain final product described three-dimensional shock isolation support.
When presetting vertical initial stiffness, the tension force sum of three precompressed steel wire ropes 9 need to be propped up more than or equal to described three-dimensional isolation
The erect static load lotus that seat is born.
Under ideal conditions, the vertical ripple of earthquake should be unable to be occurred to building during building transmission by earthquake isolating equipment
Displacement.Based on this, the operation principle of this example three-dimensional shock isolation support vertical earthquake isolating is as follows：Referring to Fig. 1, when the vertical ripple of earthquake is produced
When raw dynamic loading overcomes described vertical initial stiffness, if this dynamic loading above pushes away base 3 along the axis of fairlead 1, drive
The counteracting force of pressing plate 7 just compresses downwards cylindrical rubber elastomer 4, and building is motionless with shifting on ground for base 3；If should
, along the drop-down base of axis 3 of fairlead 1, precompressed steel wire rope 9 is then by the lifting bolt as steel wire rope break-in element for dynamic loading
10 reversely sling floating back-pressure steel plate 11, compress cylindrical rubber elastomer 4 upwards, base 3 moves down with ground, but building is still
So motionless.As can be seen here, all compressible cylindrical rubber elastomer generation bullet when P wave makes ground that up-down vibration to occur
Property deformation and consume energy.In the same manner, when building rocks in the presence of wind shake or flatly seismic wave, no matter to its to described three-dimensional every
The dynamic loading that shake bearing produces is pulling force or all compressible cylindrical rubber elastomer of pressure produces elastic deformation and consumes energy.
Example 2
Referring to Fig. 7～12, this example has been substantially carried out some improvement following on the basis of example 1：(1) by precompressed steel wire rope 9
Increase to four by three；(2) lifting bolt 10 as steel wire rope break-in element is replaced with U-shaped component 19；(3) will fix
The lifting bolt 10 of precompressed steel wire rope 9 other end replaces with steel wire rope self-locking anchorage 20；(4) middle part of base 3 is thickened and to
Upper protuberance forms inverted washbowl shape, in order to install steel wire rope self-locking anchorage 20；(5) described backpressure device is correspondingly changed
It is changed into：
Described backpressure device is only used as the U-shaped component 19, of steel wire rope break-in element by four precompressed steel wire ropes 9, four
The lifting bolt 10 of fixing 9 one, the precompressed steel wire rope of block floating back-pressure steel plate 11, four and four fixing precompressed steel wire ropes 9 are another
The steel wire rope self-locking anchorage 20 of head forms；Wherein,
Floating back-pressure steel plate 11 is located between cylindrical rubber elastomer 4 and base 3, and moves cooperation with described fairlead 1；
The four U-shaped components 19 being only used as steel wire rope break-in element fix described drive around the axisymmetrical of described fairlead 1
On dynamic pressure plate 7；Referring to Figure 10, described U-shaped component 19 is made up of round steel bending, on described driving pressing plate 7, in setting U-shaped structure
The relevant position of part 19 is provided with the circular hole matching with 19 two sides of U-shaped component, and described U-shaped component 19 is inserted in this circular hole,
The two is welded and fixed together；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with four lifting bolts 10, on described base 3
It is correspondingly provided with four steel wire rope self-locking anchorages 20 by the relative position of set four lifting bolts 10 on floating back-pressure steel plate 11；
Four precompressed steel wire ropes 9 are all distributed in described annular space with broken line state, and, one of each precompressed steel wire rope 9 by
Lifting bolt 10 is fixed on floating back-pressure steel plate 11, and other end passed around the relative U-shaped structure as steel wire rope break-in element
Turn back after part 19, then this precompressed steel wire rope 9 set steel on its corresponding base 3 by the fixing point floating back-pressure steel plate 11
The position of cord self-locking anchorage 20 passes through floating back-pressure steel plate 11, fixing on the base 3 by steel wire rope self-locking anchorage 20；Described
On floating back-pressure steel plate 11, it is equipped with the through hole 12 through precompressed steel wire rope 9 in each precompressed steel wire rope 9 through position, should
The aperture of through hole 12 is more than the diameter of described precompressed steel wire rope 9.
Referring to Figure 11 and Figure 12, in above-mentioned backpressure device, described steel wire rope self-locking anchorage 20 is by installing hole 20-1, jaw
20-2 and check bolt 20-3 is constituted, and wherein, described installing hole 20-1 sets on the base 3；Described installing hole is bored by one section
Hole and one section of screwed hole composition, the side that wherein said taper hole is located in fairlead 1, and tip points in described fairlead 1, institute
State the side that screwed hole is located at outside fairlead 1；Described jaw 20-2 is the cone matching with described taper hole, and by 3 lobes
Composition, it is provided with the clamping hole of clamping precompressed steel wire rope 9 in vivo along axis；Described check bolt 20-3 and described screwed hole phase
Coupling, and the internal circular hole being provided with along axis with diameter greater than precompressed steel wire rope 9 diameter；Described jaw 20-2 is arranged on described cone
In the hole, check bolt 20-3 is arranged on described screw thread in the hole.
By Fig. 7～12, described three-dimensional shock isolation support is assembled, make the self-corresponding folder in other end of corresponding precompressed steel wire rope 9
Pass in the circular hole of the clamping hole in pawl 20-2 body and check bolt 20-3.Then the fag end system of the precompressed steel wire rope 9 exposing
It is connected on traction stretching machine, and monitor the tension force of precompressed steel wire rope 9 while drawing tensioning using tension detecting instrument.When described
When precompressed steel wire rope 9 is tensioned to tension force needed for default vertical initial stiffness, turns check bolt 20-3 and can promote described jaw
Precompressed steel wire rope 9 is clamped and locked by 20-2, thus by cylindrical rubber elastomer 4 be clamped in all the time floating back-pressure steel plate 11 with
Drive between pressing plate 7.
Referring to Fig. 7, for increasing the bearing capacity of cylindrical rubber elastomer 4, prevent its due to axial length excessive and
Horizontal direction unstability, the cylindrical rubber elastomer 4 in this example is alternately folded by three layers of solid rubber block 4-1 and two-layered steel plates 4-3
Close sulfuration and connect formation elastomer, the two ends of elastomer are provided with end plate 4-2.
This example other other than the above implementation is same as Example 1.
The operation principle of three-dimensional shock isolation support described in this example is same as Example 1, and the public can refer to example 1 and voluntarily analyzes.
Example 3
Referring to Figure 13～16, this example has been substantially carried out following improvement on the basis of example 2：(1) will be used as steel wire rope break-in
The U-shaped component 19 of element replaces with fixed pulley 21；(2) described backpressure device is changed accordingly to：
Described backpressure device is floated by 20, one piece of the fixed pulley that six roots of sensation precompressed steel wire rope 9, six is only used as steel wire rope break-in element
The lifting bolt 10 of dynamic 11, six fixing 9 one, precompressed steel wire ropes of back-pressure steel plate and six fixing precompressed steel wire rope 9 other ends
Steel wire rope self-locking anchorage 20 forms.Wherein,
Floating back-pressure steel plate 11 is located between cylindrical rubber elastomer 4 and base 3, and moves cooperation with described fairlead 1；
Six fixed pulleys 21 being only used as steel wire rope break-in element fix described driving around the axisymmetrical of described fairlead 1
The lower surface of described cylindrical rubber elastomer 4 surrounding is located on pressing plate 7；Wherein, described fixed pulley 21 is hinged on support,
This support is welded on driving pressing plate 7；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with six lifting bolts 10, on described base 3
It is correspondingly provided with six steel wire rope self-locking anchorages 20 by the relative position of set six lifting bolts 10 on floating back-pressure steel plate 11；
Six roots of sensation precompressed steel wire rope 9 is all distributed in described annular space with broken line state, and, one of each precompressed steel wire rope 9 by
Lifting bolt 10 is fixed on floating back-pressure steel plate 11, and other end passed around the relative fixed pulley as steel wire rope break-in element
Turn back after 21, then this precompressed steel wire rope 9 set steel wire on its corresponding base 3 by the fixing point floating back-pressure steel plate 11
The position of rope self-locking anchorage 20 passes through floating back-pressure steel plate 11, fixing on the base 3 by steel wire rope self-locking anchorage 20；Described is floating
On dynamic back-pressure steel plate 11, it is equipped with the through hole 12 through precompressed steel wire rope 9 in each precompressed steel wire rope 9 through position, this leads to
The aperture in hole 12 is more than the diameter of described precompressed steel wire rope 9.
This example other other than the above implementation is same as Example 2.
The operation principle of three-dimensional shock isolation support described in this example is same as Example 1, and the public can refer to example 1 and voluntarily analyzes.
Claims (4)
1. the predeterminable three-dimensional shock isolation support of a kind of vertical initial stiffness, it is folded that this three-dimensional isolation device includes being sequentially connected in series up and down
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 being distributed on laminated rubber bearing surrounding；One company of being fixed on of described tensile steel wire rope
On fishplate bar, other end is fixed on lower connecting plate, and the line of upper and lower two fixing points is parallel to the axis of described laminated rubber bearing
Line；
Described vertical earthquake isolating bearing includes base, and the upper surface of this base is provided with upwardly extending fairlead；Described fairlead
Inside is coaxially provided with spring, and the top of this spring is provided with driving pressing plate；Under the lower connecting plate of described laminated rubber damping bearing
The middle part on surface forms a projection to described fairlead sunken inside, and this raised with described driving pressing plate is fixedly connected；
It is characterized in that,
Described spring is cylindrical rubber elastomer, and the external diameter of this cylindrical rubber elastomer is less than the internal diameter of fairlead, two
Form an annular space between person；
It is additionally provided with backpressure device in the fairlead of described vertical earthquake isolating bearing；Described backpressure device includes the pre- compressed steel of more than three
The cord steel wire rope break-in element equal with precompressed steel wire rope quantity and one block of floating back-pressure steel plate, wherein,
Described floating back-pressure steel plate is located between cylindrical rubber elastomer and base；
Described steel wire rope break-in element is on the fixing described driving pressing plate of axisymmetrical of described fairlead；
Described precompressed steel wire rope is distributed in described annular space with broken line state, and of each precompressed steel wire rope around
The axisymmetrical of described fairlead is fixed on floating back-pressure steel plate, and other end passed around relative steel wire rope break-in unit
Turn back after part, then from this precompressed steel wire rope, the fixing point on floating back-pressure steel plate is other passes through floating back-pressure Interal fixation in institute
State on base；On described floating back-pressure steel plate, it is equipped with through precompressed steel wire rope each precompressed steel wire penetrating position
Through hole, the aperture of this through hole is more than the diameter of described precompressed steel wire rope；
It is respectively adopted dynamic cooperation between described fairlead and driving pressing plate and floating back-pressure steel plate；
By precompressed steel wire tensioning to presetting tension force needed for vertical initial stiffness, described cylindrical rubber elastomer is made to press from both sides all the time
Hold and driving between pressing plate and floating back-pressure steel plate；
Described tensile steel wire rope tensioning is provided the precompression being equal to design dead load for laminated rubber bearing.
2. a kind of predeterminable three-dimensional shock isolation support of vertical initial stiffness according to claim 1 is it is characterised in that described
The other end of the precompressed steel wire rope of vertical earthquake isolating bearing is fixed on base by steel wire rope self-locking anchorage；Described steel wire rope self-locking
Anchorage is made up of installing hole, jaw and check bolt, wherein,
Described installing hole is located on base；Described installing hole is made up of one section of taper hole and one section of screwed hole, wherein said cone
Hole position is in the side by fairlead, and tip points in described fairlead, and described screwed hole is located remotely from the opposite side of fairlead；
Described jaw is to match cone with described taper hole, and is made up of 3～5 lobes, and it is pre- that it is provided with clamping along axis in vivo
The clamping hole of compressed steel cord；
Described check bolt is matched with described screwed hole, and is provided with diameter greater than corresponding precompressed steel wire rope along axis in vivo
The circular hole of diameter；
Described jaw is arranged in described taper hole, and check bolt is arranged on described screw thread in the hole.
3. a kind of predeterminable three-dimensional shock isolation support of vertical initial stiffness according to claim 1 and 2 it is characterised in that
Described steel wire rope break-in element is fixed pulley, lifting bolt or U-shaped component.
4. a kind of predeterminable three-dimensional shock isolation support of vertical initial stiffness according to claim 1 and 2 it is characterised in that
The described driving pressing plate surface relative with floating back-pressure steel plate is equipped with a locating ring, two of described cylindrical rubber elastomer
It is embedded in respectively in described locating ring.
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| CN87100223A (en) * | 1987-02-07 | 1987-08-12 | 华东建筑设计院 | Prestressed damping spring vibration-reducing apparatus |
| CN200943268Y (en) * | 2006-09-11 | 2007-09-05 | 广州大学 | Improved tri-dimensional shock insulation device |
| CN201136517Y (en) * | 2007-12-18 | 2008-10-22 | 中国北车集团四方车辆研究所 | Bidirectional buffer for pulling-pressing conversion of elastic body |
| JP2013002509A (en) * | 2011-06-14 | 2013-01-07 | Swcc Showa Device Technology Co Ltd | Laminated rubber bearing body |
| CN203891204U (en) * | 2014-06-11 | 2014-10-22 | 安徽工业大学 | Shape memory alloy tensile rubber shock isolation support |
| CN105370043A (en) * | 2015-09-29 | 2016-03-02 | 中国建筑第二工程局有限公司 | Stranded wire harness guiding device and stranded wire harness penetrating method |
| CN205369580U (en) * | 2016-02-05 | 2016-07-06 | 中国建筑西南设计研究院有限公司 | Divide few arrangement of reinforcement of disconnected formula not link up concrete power consumption partition wall that cracks |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100223A (en) * | 1987-02-07 | 1987-08-12 | 华东建筑设计院 | Prestressed damping spring vibration-reducing apparatus |
| CN200943268Y (en) * | 2006-09-11 | 2007-09-05 | 广州大学 | Improved tri-dimensional shock insulation device |
| CN201136517Y (en) * | 2007-12-18 | 2008-10-22 | 中国北车集团四方车辆研究所 | Bidirectional buffer for pulling-pressing conversion of elastic body |
| JP2013002509A (en) * | 2011-06-14 | 2013-01-07 | Swcc Showa Device Technology Co Ltd | Laminated rubber bearing body |
| CN203891204U (en) * | 2014-06-11 | 2014-10-22 | 安徽工业大学 | Shape memory alloy tensile rubber shock isolation support |
| CN105370043A (en) * | 2015-09-29 | 2016-03-02 | 中国建筑第二工程局有限公司 | Stranded wire harness guiding device and stranded wire harness penetrating method |
| CN205369580U (en) * | 2016-02-05 | 2016-07-06 | 中国建筑西南设计研究院有限公司 | Divide few arrangement of reinforcement of disconnected formula not link up concrete power consumption partition wall that cracks |
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Application publication date: 20170208 |