CN106884378A - A kind of polyurethane shock-absorbing bridge support and its shock-dampening method - Google Patents
A kind of polyurethane shock-absorbing bridge support and its shock-dampening method Download PDFInfo
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- CN106884378A CN106884378A CN201710156910.2A CN201710156910A CN106884378A CN 106884378 A CN106884378 A CN 106884378A CN 201710156910 A CN201710156910 A CN 201710156910A CN 106884378 A CN106884378 A CN 106884378A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
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Abstract
A kind of polyurethane shock-absorbing bridge support and its shock-dampening method, wherein bearing includes seat of honour board component and lower base plate assembly, and lower base plate assembly is made up of sliding part and support member, seat of honour board component is arranged at the surface of lower base plate assembly, sliding part realizes damping energy dissipation by horizontal compression, plays a part of horizontal shock-absorbing；And support member is brought into close contact by bearing plate vertical deformation and steel basin, so as to play vertical cushioning effect, and its deformation is limited due to being constrained outside steel basin by steel basin ultimate strength；Support member realizes horizontal shock-absorbing as bearing horizontal sliding and the fulcrum for rotating together with sliding part simultaneously.
Description
Technical field
The present invention relates to a kind of bridge pad and its shock-dampening method, especially a kind of polyurethane high-speed railway bridge damping branch
Seat and its shock-dampening method, belong to bridge and subtract technical field of isolation.
Background technology
Bridge pad is the important load transfer device of bridge, and it is set up on pier, and top surface supports the structure on bridge top, bears
The various power of portion's structure simultaneously transmit the force to pier, and require in the presence of various power, and bearing adapts to turning for superstructure
Angle and displacement, make superstructure can Free Transform without producing extra additional internal force, therefore the construction of bearing is extremely important.And
High-speed railway bridge due to having the characteristics that in use：Train travel speed is high, and up to 350km/h, and train travel is close
Degree is big, and up to 3 ~ 5 minutes row cars, and the comfortableness of high speed traveling and security requirement were higher, therefore to High-speed Railway Bridges
Beam support proposes requirement higher.At present, European Countries High-speed Railway Bridges beam support is mainly pot bearing and ball shaped steel bearing,
It is a large amount of using laminated rubber bearing, pot bearing, brass supporting board support, Korea High-speed Rail on modern architecture in Japan railroad bridge
Bridge mostly uses laminated rubber bearing and pot bearing, TaiWan, China High-speed Railway Bridges beam support to be mainly pot bearing, in
State's continent High-speed Railway Bridges beam support mainly uses pot bearing and ball shaped steel bearing.Pot bearing rotate flexibly, simple structure,
It is dependable performance, cheap, existing nearly 30 years use experience at home, therefore largely make on high-speed railway bridge at home
With.But in severe cold areas, when winter temperature is less than -40 DEG C, rubber is hardened at low temperature, easily loses elastic performance, therefore
Existing rubber pot bearing should not be used in low temperature environment.Ball shaped steel bearing does not exist ageing of rubber problem, substantially increases branch
The service life of seat, is more suitable for low temp area, but the ball shaped steel bearing of simple steel has that damping effect is undesirable；Closely
To occur using modified ultra-high molecular weight polyethylene slide plate, ball shaped steel bearing physical dimension is further reduced, and has construction costs
Reduced.Therefore, ball shaped steel bearing is widely used on high-speed railway bridge, and especially ball shaped steel bearing rotates flexible, construction letter
Single, large carrying capacity, it is adaptable to large-tonnage bearing, is frequently used for large-span continuous girder bridges, but ball shaped steel bearing under bridge
The dimensional space requirement of portion's structure is larger, causes the construction costs of bridge pier higher.Therefore develop one kind and rotate flexible, construction letter
List, dependable performance, cost are lower and High-speed Railway Bridges beam support of suitable for low temp area seems particularly significant.
On the other hand, elastic polyurethane part is a kind of polymer composite between plastics and rubber, is had
Excellent wearability, rebound performance good, good mechanical property and the performance such as oil resistant, low temperature resistant, resistance to ozone aging, extensive use
In fields such as rubber roll, oil sealing, automobile tires, be deep into national economy and people's lives, as it is a kind of quickly grow answer
Condensation material.The development of bridge pad is closely coupled with the development of engineering material, by elastic polyurethane part be applied to bridge subtract every
In shake bearing, the characteristics such as the good mechanical property of elastic polyurethane part and rebound performance can be given full play to, be conducive to improving
The damping and isolation effect of bridge pad, while reducing the construction costs of bridge construction.The appearance of elastic polyurethane part, and in bridge
Bearing field is applied, and the development to bridge pad will bring new revolution.
Retrieved by domestic patent, discovery there are Patents, is exemplified below：
1. number of patent application CN201510606156.9, entitled " replaceable module interdigitated electrode structure vibration absorption and isolation support and its preparation
The patent of invention of method " discloses a kind of replaceable module interdigitated electrode structure vibration absorption and isolation support and preparation method thereof.Its major technique
It is characterized as：Support body including being provided with upper bracket plate and lower support plate, the surrounding of the upper bracket plate is provided with damping power consumption
The damping power consumption module that base and damping Wasted-energy steel plate are constituted, damping power consumption base is connected by the first bolt with upper bracket plate,
Lower support plate surrounding is provided with the damping power consumption module baffle plate matched with damping power consumption module, and damping power consumption module baffle plate passes through
Second bolt is connected with lower support plate, and it is trapezoidal with what damping Wasted-energy steel plate matched to be provided with tooth form on damping power consumption module baffle plate
Comb.The replaceable module interdigitated electrode structure vibration absorption and isolation support, parts mould flimsy when earthquake is occurred and for consuming energy
Block, realizes changing convenient and swift, reduces cost needed for repairing bearing, saves manpower compared with integral replacing bearing, material resources,
Financial resources.
2. number of patent application CN201310111776.6, entitled " a kind of New Isolation Bearing and its replacing options "
Patent of invention disclose a kind of New Isolation Bearing, including support body and the upper company positioned at support body up/down portion
Connect steel plate and lower junction steel plate, the support body or slided by slide mechanism or by rolling mechanism and up/down junction steel plate
Dynamic connection, the up/down side of the up/down junction steel plate is provided with sleeve and anchor bolt, the lower/upper side of up/down junction steel plate
Face is provided with the positive stop for limiting support body horizontal sliding；The upper steel plate of the support body and the periphery of lower steel plate set
There is the bindiny mechanism for installing pull bar.Coefficient of friction between the support body and up/down junction steel plate of the vibration absorption and isolation support
It is small, replacing is easily separated from, due to the limitation of positive stop, support body will not produce horizontal sliding when normally using, and also will not
Interfere with the detrusion of the middle rubber of bearing；The replacing options of the bearing are easy to operate, safe, do not limited by site condition,
Large-scale jacking device need not be employed, the replacement cycle is short, efficiency high, low cost.
Although above-mentioned patent is directed to bridge pad, can also reach the effect for subtracting shock insulation, but all do not solve to bridge
Dimensional space larger, the problem for causing the construction costs of bridge pier higher, it is therefore desirable to improve of requirement of substructure.
The content of the invention
The present invention overcomes the shortcomings of existing pot bearing and ball shaped steel bearing, there is provided one kind rotate flexibly, simple structure,
It is dependable performance, cheap and ageing-resistant, it is adaptable to the polyurethane bearing and its shock-dampening method of high-speed railway bridge damping.
The present invention is for the used technological means that solves the above problems：A kind of polyurethane shock-absorbing bridge support, including it is upper
Base plate assembly and lower base plate assembly, seat of honour board component are arranged at the surface of lower base plate assembly, and lower base plate assembly includes supporting part
Part and sliding part, support member are located at the centre position of whole lower base plate assembly, are mainly used in bearing vertical load, with the seat of honour
Board component constitutes vertical shock absorbing part together, while also serving as bearing horizontal sliding and the fulcrum for rotating；Sliding part is located at branch
The surrounding of component upper ends is supportted, the vibrations produced during for alleviating horizontal sliding or rotation constitute level together with the board component of the seat of honour
Shock absorbing part.
Further, sliding part includes horizontal sliding body and straight skidding body, for horizontal load provides horizontal reacting force, leads to
Cross horizontal sliding body and automatically reseting for straight skidding body play cushioning effect with limit function.
Further, sliding part is multiple elastomeric elements, and damping energy dissipation is realized by the horizontal compression of elastomeric element, is risen
To cushioning effect；The multiple elastomeric elements for constituting horizontal sliding body are symmetrically and evenly arranged at the both lateral sides of support member upper end,
The multiple elastomeric elements for constituting straight skidding body are symmetrically and evenly arranged at longitudinal both sides of support member upper end, horizontal sliding body
Multiple elastomeric elements are mutually perpendicular to multiple elastomeric elements of straight skidding body.
Further, each elastomeric element includes steel plate, elastomer and sphere wearing plate, and steel plate has two pieces, and elastomer is solid
Due to two pieces of centres of steel plate, one end of elastomeric element on the outside of one block of steel plate by being fixed on support member, and elastomeric element is another
Sphere wearing plate is fixed with the outside of the steel plate of one end.
Further, elastomer is polyurethane elastomer, and the sliding part being made up of polyurethane elastomer automatically resets
With it is spacing.
Further, support member includes lower seat board, bearing plate and middle seat board, and lower seat board is located at bottom, and bearing plate sets
Above lower seat board, above bearing plate, sliding part is fixed on the surrounding of middle seat board to middle seat board.
Further, lower seat board lower part is flat board, and upper part has circular steel basin, and bearing plate is arranged on lower seat board
In steel basin, the circumferential periphery vacancy of middle seat board lower end forms step, and the bossing of bearing pressure-bearing backward step also is located at lower seat board
Steel basin in, it is ensured that support member it is firm.Mainly play vertical pressure-bearing due to bearing plate and compression strength is higher, therefore hold
The physical dimension requirement of pressing plate is smaller, makes the dimensional space requirement of bridge substructure smaller, saves the construction costs of bridge pier；
Additionally, the bearing plate in lower seat board steel basin is in three-dimensional stress state, the function with similar liquids rotates flexible, can meet
The need for bridge beam structure is rotated.
Further, bearing plate is the slab that lateral cross section is circle, and side is in inner concavity, its maximum external diameter and lower seat
The internal diameter of slab basin is consistent.The deformation of bearing plate is subject to the outer constraint of steel basin, and its bursting stress is strong by the limit of lower seat board steel basin
The limitation of degree, therefore it is more suitable for the high-speed railway bridge of large-tonnage.
Further, planar lasting board is further fixed on above middle seat board, planar lasting board is seat of honour board component and lower seat
The contact surface of board component, when being slid between seat of honour board component and lower base plate assembly, planar lasting board centering seat board plays protection
Effect, extends the service life of lower base plate assembly.
Further, seat of honour board component includes upper base plate, plane stainless steel plate, side stainless steel plate, upper base plate upper surface portion
It is divided into flat board, the upper end that lower part has baffle plate, lower base plate assembly is located in the vacancy that upper base plate baffle plate is formed, and prevents bearing from sliding
Seat of honour board component and lower base plate assembly are separated during shifting；Plane stainless steel plate is arranged on the upper surface inside upper base plate, and side is stainless
Steel plate is located at the inner surface of upper base plate baffle plate, and in sliding, stainless steel plate is protected to upper base plate, extension seat of honour board component
Service life.
Further, anchorage rod iron is fixed with the top of the board component of the seat of honour, the bottom of lower base plate assembly is fixed with casts anchor
Heavy stone used as an anchor rod iron.
A kind of shock-dampening method of polyurethane shock-absorbing bridge support, by the sliding between seat of honour board component and lower base plate assembly
To realize, the sliding part of lower base plate assembly realizes damping energy dissipation by horizontal compression, plays a part of horizontal shock-absorbing；Work as support
After part bears vertical load, bearing plate is squeezed generation vertical deformation, the steel of bearing plate and lower seat board after deforming pressure-bearing
Basin is brought into close contact, and plays vertical cushioning effect, and bearing plate deformation by steel basin outer constraint, its bursting stress receives lower seat board
The limitation of the ultimate strength of steel basin；Meanwhile, fulcrum when support member also serves as horizontal sliding and rotates, together with sliding part
Realize horizontal shock-absorbing.
Further, multiple elastomers being made up of polyurethane elastomer are installed in sliding part, when bearing is laterally single
During side slip, the elastomeric element that horizontal sliding side is made up of polyurethane elastomer in lower base plate assembly is in compressive state, horizontal
Free state is in the elastomeric element of opposite side, and the elastomeric element of longitudinal both sides constitutes lateral sliding friction with upper base plate
It is secondary；When bearing horizontal direction slides, the elastomeric element that horizontal side is in compressive state affranchises state, and opposite side is in
The elastomeric element of free state then becomes compressive state, and the elastomeric element of longitudinal both sides still constitutes lateral sliding and rubs with upper base plate
Wipe secondary；During bearing straight skidding, situation is similar with horizontal sliding.
Further, when bearing occurred level slides and rotates, the ledge of middle seat board bottom lower edge is not higher by down
Edge on the steel basin of seat board, and upper edge of the middle seat board bottom not with lower seat board steel basin contact, and has both ensured the steadiness of bearing, also extends
The service life of bearing.
The beneficial effects of the invention are as follows：
1. the present invention symmetrically sets elastomeric element in the middle seat board surrounding of lower base plate assembly, and side is constituted with seat of honour board component
To sliding friction pair, the horizontal sliding horizontal and vertical to shock mount plays position-limiting action and the effect of automatically reseting, it is to avoid bridge
Beam support produces excessive horizontal displacement under extreme condition, causes bridge top beam structure to topple.When bridge pad holds
When the horizontal loading received is more than the maximum horizontal load under its normal operating condition, the sliding horizontal speed of bearing is to elastomeric element
Impact is formed, elastomeric element consumes the slip kinetic energy of bearing by the elastic deformation of itself, play damping energy dissipation effect, improve
The reliability of bridge pad Horizontal limiting.
2. bearing plate of the present invention mainly plays vertical pressure-bearing, and the compression strength of bearing plate is higher, therefore bearing plate
Physical dimension requirement is smaller, makes the dimensional space requirement of bridge substructure smaller, saves the construction costs of bridge pier.Additionally,
Bearing plate in lower seat board steel basin is in three-dimensional stress state, and the function with similar liquids rotates flexible, can meet bridge
The need for beam beam structure is rotated.
3. total compression strength of the present invention laterally or longitudinally slide mass meets elastic polyurethane parts holder maximum horizontal load
The requirement of lotus.When the maximum horizontal load of total compression strength more than elastic polyurethane parts holder of laterally or longitudinally slide mass
When, it is ensured that elastic polyurethane part will not be subject to crushing, and be conducive to preventing elastic polyurethane components aging.
4. after bearing of the present invention bears vertical load, bearing plate produces vertical deformation, after compression with steel basin in the absence of sky
Gap, that is, be brought into close contact.It is brought into close contact between bearing plate and steel basin tub wall when using after vertical carrying, increases the elasticity of bearing plate
Modulus, reduces the Elastic penetration of bearing plate.
Brief description of the drawings
Fig. 1 is the overall schematic of the embodiment of the present invention one；
Fig. 2 is the upper base plate component diagram of the embodiment of the present invention one；
Fig. 3 is embodiment of the present invention base plate assembly schematic diagram once；
Fig. 4 is the elastomeric element schematic diagram of the embodiment of the present invention one；
Fig. 5 is two times base plate assembly schematic diagrames of the embodiment of the present invention；
Fig. 6 is the elastomeric element schematic diagram of the embodiment of the present invention two；
Wherein：1. seat of honour board component, 11. upper base plates, 111. casting lug thereons, 12. plane stainless steel plates, 13. side stainless steel plates, 2.
Upper anchorage rod iron, 3. descends base plate assembly, 31. support members, 311. times seat boards, 312. bearing plates, seat board in 313., and 314. is flat
Face wearing plate, 32. sliding parts, 321 horizontal sliding bodies, 322 straight skidding bodies, 33. elastomeric elements, 331. elastomers, 332.
Steel plate, 333. sphere wearing plates, 4. descends anchorage rod iron.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As Figure 1-Figure 4, a kind of polyurethane shock-absorbing bridge support, including seat of honour board component 1 and lower base plate assembly 3, on
Base plate assembly 1 is arranged at the surface of lower base plate assembly 3, and lower base plate assembly 1 includes support member 31 and sliding part 32, support
Part 31 is located at the centre position of whole lower base plate assembly 3, is mainly used in bearing vertical load, the structure together with seat of honour board component 1
Into vertical shock absorbing part, while fulcrum when also serving as bearing horizontal sliding and rotating；Sliding part 32 is located at support member 31
The surrounding of upper end, the vibrations produced during for alleviating horizontal sliding or rotation, constitutes horizontal shock-absorbing portion together with seat of honour board component 1
Point.
Further, sliding part 32 includes horizontal sliding body 321 and straight skidding body 322, for horizontal load provides water
Redress power, play cushioning effect with limit function by horizontal sliding body and automatically reseting for straight skidding body.
Further, sliding part 32 is multiple elastomeric elements 33, and damping is realized by the horizontal compression of elastomeric element 33
Power consumption, plays cushioning effect；Multiple elastomeric elements 33 of composition horizontal sliding body 321 are symmetrically and evenly arranged in support member 31
The both lateral sides at end, multiple elastomeric elements 33 of composition straight skidding body 322 are symmetrically and evenly arranged at the upper end of support member 31
Longitudinal both sides, multiple elastomeric elements 33 of horizontal sliding body 321 mutually hang down with multiple elastomeric elements 33 of straight skidding body 321
Directly.
Further, each elastomeric element 33 includes steel plate 332, elastomer 331 and sphere wearing plate 333, and steel plate 332 has
Two pieces, elastomer 331 is fixed on two pieces of centres of steel plate 332, and one end of elastomeric element 33 is consolidated by one piece of outside of steel plate 332
Support member 31 is scheduled on, the outside of the steel plate 332 of the other end of elastomeric element 33 is fixed with sphere wearing plate 333.
Further, steel plate 332 is circular flat board, and to be small at both ends and big in the middle, i.e., two is in thin along centre to elastomer 331
The polyurethane body of waisted, elastomer 331 deforms towards at middle eel-like figure when being squeezed so as to elastomeric element 33, and horizontal sliding body
321 and straight skidding body 322 the tight parallel arranged of multiple elastomeric elements 33 without because elastomer 331 deformation make each elasticity
Mutually extruded between part 33.In another embodiment of the present invention as shown in Fig. 5-Fig. 6, elastomer 331 is cylindrical shape, bullet
The diameter of gonosome 331 less than steel plate 332 diameter, multiple elastomeric elements 33 of horizontal sliding body 321 and straight skidding body 322 it
Between parallel arranged and leave space；Elastomer 331 can also be that cross section is polygonal shape.
Further, elastomer 331 is polyurethane elastomer, because elastic polyurethane part compression strength is high and elastic good
It is good, therefore the sliding part being made from it has good auto-reset function and limit function.
Further, support member 31 includes lower seat board 311, bearing plate 312 and middle seat board 313, and lower seat board 311 is located at most
Lower end, above lower seat board 311, middle seat board 312 slides multiple bullets of part 32 to bearing plate 312 above bearing plate 312
Property part 33 is symmetrically welded on the surrounding of middle seat board 313.
Further, partly it is square plate below lower seat board 311, upper part has circular steel basin；Bearing plate 312 sets
Put in the steel basin of lower seat board 311；The upper end of middle seat board 313 is square plate, and the circumferential periphery vacancy of lower end forms circumferential platform
Rank, the bossing of bearing pressure-bearing backward step also is located in the steel basin of lower seat board 311, it is ensured that support member 31 it is firm.Due to
Bearing plate 312 mainly plays vertical pressure-bearing and compression strength is higher, therefore the physical dimension requirement of bearing plate 312 is smaller, makes
The dimensional space requirement of bridge substructure is smaller, saves the construction costs of bridge pier；Additionally, holding in the steel basin of lower seat board 311
Pressing plate 312 is in three-dimensional stress state, and the function with similar liquids rotates flexible, can meet the rotation of bridge beam structure
Need.
Further, bearing plate 312 is that lateral cross section is circular slab, and side is in inner concavity, its maximum external diameter with
The internal diameter of the steel basin of lower seat board 311 is consistent.By the outer constraint of steel basin, its bursting stress is by lower seat board 311 for the deformation of bearing plate 312
The limitation of the ultimate strength of steel basin, therefore it is more suitable for the high-speed railway bridge of large-tonnage.
Further, bearing plate 312 is pressure-bearing polyurethane sheet, and end reaction is transmitted using pressure-bearing polyurethane sheet, and to bridge
The counter-force of beam fulcrum has certain corrective action, has certain damping, buffering function to the vertical load of beam body.Because pressure-bearing is poly-
Urethane plate is sealed in the steel basin of lower seat board 311, is improved in three-dimensional stress state, thus bearing capacity, generally steel
When basin is not destroyed, polyurethane sheet will not lose bearing capacity.Bearing plate 312 is rubber slab in an alternative embodiment of the invention.
Further, planar lasting board 314 is further fixed on above middle seat board 313, planar lasting board 314 is upper base plate group
The contact surface of part 1 and lower base plate assembly 3, when being slid between seat of honour board component 1 and lower base plate assembly 3, planar lasting board 314
Centering seat board 313 shields, and extends the service life of the component of lower seat board 3.
Further, seat of honour board component 1 includes upper base plate 11, plane stainless steel plate 12, side stainless steel plate 13, upper base plate
11 is square, and its upper surface portion is divided into flat board, and the baffle plate that lower part has baffle plate, surrounding surrounds a square vacancy, lower seat board group
The upper end of part 3 is located in the vacancy that the baffle plate of upper base plate 11 is formed, seat of honour board component 1 and lower base plate assembly 3 when preventing bearing from sliding
Separate；Plane stainless steel plate 12 is arranged on the lower surface of the plane of upper base plate 11, and the plate of side stainless steel 13 is located at the baffle plate of upper base plate 11
Inner surface, sliding when stainless steel plate upper base plate 11 is protected, extend seat of honour board component 1 service life.
Further, the top of seat of honour board component 1 is fixed with anchorage rod iron 2, and the bottom of lower base plate assembly 3 is fixed with down
Anchorage rod iron 4.
Further, respectively there are two casting lug thereons 111 for stretching out at the laterally or longitudinally two ends of the plate part of upper base plate 11,
Four upper anchorage rod irons 2 are fixed on each casting lug thereon 111.
Further, there are the hole of fixed lower anchorage rod iron 4, four lower anchorages at four angles of the lower plate part of seat board 311
Rod iron 4 is fixed on the lower section of lower base plate assembly 3 by the hole on the flat board of lower seat board 311.
From above-described embodiment it can be seen that the invention further relates to a kind of shock-dampening method of polyurethane damping bridge pad, leading to
Cross seat of honour board component 1 and lower base plate assembly 3 to realize, when sliding, the sliding part 32 of lower base plate assembly 3 passes through level pressure
Damping energy dissipation is realized in contracting, plays a part of damping, and lower base plate assembly 3 is enclosed within the vacancy that the baffle plate of the lower end of upper base plate 11 is formed
It is interior, prevent from being come off between seat of honour board component 1 and lower base plate assembly 3；After bearing bears vertical load, bearing plate 312 is squeezed
Vertical deformation is produced, bearing plate 312 is brought into close contact with the steel basin of lower seat board 311 after deforming pressure-bearing, again serves to cushioning effect.
Further, multiple elastomers being made up of polyurethane elastomer are installed in sliding part, when bearing is laterally single
During side slip, the elastomeric element 33 that horizontal sliding side is made up of polyurethane elastomer in lower base plate assembly 3 is in compressive state,
The elastomeric element 33 of horizontal opposite side is in free state, and the elastomeric element 33 of longitudinal both sides constitutes lateral cunning with upper base plate 11
Dynamic friction pair；When bearing horizontal direction slides, the elastomeric element 33 that horizontal side is in compressive state affranchises state, separately
The elastomeric element 33 that side is in free state then becomes compressive state, the elastomeric element 33 of longitudinal both sides still with upper base plate 11
Constitute lateral sliding friction pair；During bearing straight skidding, situation is similar with horizontal sliding.
Further, when bearing occurred level slides and rotates, the ledge of the bottom lower edge of middle seat board 313 is not higher by
Edge on the steel basin of lower seat board 311, and upper edge of the bottom of middle seat board 313 not with the steel basin of lower seat board 311 contact, and has both ensured the steady of bearing
Solidity also extends the service life of bearing.
As can be seen here, the present invention also has the advantages that：
1. the present invention symmetrically sets elastomeric element in the middle seat board surrounding of lower base plate assembly, and side is constituted with seat of honour board component
To sliding friction pair, the horizontal sliding horizontal and vertical to damping device plays position-limiting action and the effect of automatically reseting, it is to avoid bridge
Beam support produces excessive horizontal displacement under extreme condition, causes bridge top beam structure to topple.When bridge pad holds
When the horizontal loading received is more than the maximum horizontal load under its normal operating condition, the sliding horizontal speed of elastomeric element is to elasticity
Part forms impact, and elastomeric element consumes the slip kinetic energy of bearing by the elastic deformation of itself, under the extreme conditions such as earthquake,
Damping energy dissipation effect is played, the reliability of bridge pad Horizontal limiting is improve.
2. bearing plate of the present invention mainly plays vertical pressure-bearing, and the compression strength of bearing plate is higher, therefore bearing plate
Physical dimension requirement is smaller, makes the dimensional space requirement of bridge substructure smaller, saves the construction costs of bridge pier.Additionally,
Bearing plate in lower seat board steel basin is in three-dimensional stress state, and the function with similar liquids rotates flexible, can meet bridge
The need for beam beam structure is rotated.
Claims (10)
1. a kind of polyurethane shock-absorbing bridge support, including seat of honour board component（1）With lower base plate assembly（3）, it is characterised in that：The seat of honour
Board component（1）It is arranged at lower base plate assembly（3）Surface, lower base plate assembly（3）Including support member（31）With sliding part
（32）, support member（31）Positioned at whole lower base plate assembly（3）Centre position, be mainly used in bearing vertical load, with the seat of honour
Board component（1）Vertical shock absorbing part is constituted together, while fulcrum when also serving as bearing horizontal sliding and rotating；Sliding part
（32）Located at support member（31）The surrounding of upper end, the vibrations produced during for alleviating horizontal sliding or rotation, with upper base plate group
Part（1）Horizontal shock-absorbing part is constituted together.
2. polyurethane shock-absorbing bridge support as claimed in claim 1, it is characterised in that：The sliding part（32）Including transverse direction
Slide mass（321）With straight skidding body（322）, for horizontal load provides horizontal reacting force, by horizontal sliding body（321）And longitudinal direction
Slide mass（322）To automatically reset and play cushioning effect with limit function.
3. polyurethane shock-absorbing bridge support as claimed in claim 2, it is characterised in that：The sliding part（32）It is multiple bullets
Property part（33）, by elastomeric element（33）Horizontal compression realize damping energy dissipation, play cushioning effect；Composition horizontal sliding body
（321）Multiple elastomeric elements（33）Symmetrically and evenly it is arranged at support member（31）The both lateral sides of upper end, constitute straight skidding
Body（322）Multiple elastomeric elements（33）Symmetrically and evenly it is arranged at support member（31）Longitudinal both sides of upper end, horizontal sliding body
（321）Multiple elastomeric elements（33）With straight skidding body（322）Multiple elastomeric elements（33）It is mutually perpendicular to.
4. polyurethane shock-absorbing bridge support as claimed in claim 3, it is characterised in that：The elastomeric element（33）Including steel plate
（332）, elastomer（331）With sphere wearing plate（333）, steel plate（332）There are two pieces, elastomer（331）It is fixed on two blocks of steel plates
（332）Centre, elastomeric element（33）One end pass through one block of steel plate（332）Outside be fixed on support member（31）, elasticity
Part（33）The steel plate of the other end（332）Outside be fixed with sphere wearing plate（333）.
5. polyurethane shock-absorbing bridge support as claimed in claim 4, it is characterised in that：The elastomer（331）It is polyurethane
Elastomer, the sliding part being made up of polyurethane elastomer automatically reset with it is spacing.
6. polyurethane shock-absorbing bridge support as claimed in claim 1, it is characterised in that：The support member（31）Including lower seat
Plate（311）, bearing plate（312）With middle seat board（313）, lower seat board（311）Positioned at bottom, bearing plate（312）Located at lower seat board
（311）Above, middle seat board（313）Located at bearing plate（312）Above, part is slid（32）It is fixed on middle seat board（313）Surrounding；
Lower seat board（311）Lower part is flat board, and upper part has circular steel basin, bearing plate（312）It is arranged on lower seat board（311）Steel
In basin, middle seat board（313）The circumferential periphery vacancy of lower end forms step, and the bossing of bearing pressure-bearing backward step also is located at lower seat
Plate（311）Steel basin in, it is ensured that support member（31）It is firm；Bearing plate（312）For lateral cross section is circular slab, side
In inner concavity, its maximum external diameter and lower seat board（311）The internal diameter of steel basin is consistent.
7. a kind of polyurethane shock-absorbing bridge support as claimed in claim 1, it is characterised in that：The seat of honour board component（1）Bag
Include upper base plate（11）, plane stainless steel plate（12）, side stainless steel plate（13）, upper base plate（11）Upper part is flat board, below
There are baffle plate, lower base plate assembly in part（3）Upper end be located at upper base plate（11）Baffle plate formed vacancy in, when preventing bearing from sliding on
Base plate assembly（1）With lower base plate assembly（3）Separate；Plane stainless steel plate（12）It is arranged on upper base plate（11）Internal upper surface,
Side stainless steel plate（13）It is located at upper base plate（11）The inner surface of baffle plate, in sliding, stainless steel plate is to upper base plate（11）Protected
Shield, extends seat of honour board component（1）Service life.
8. the shock-dampening method of the polyurethane shock-absorbing bridge support that a kind of claim 1 is realized, it is characterised in that：By upper base plate group
Part（1）With lower base plate assembly（3）Between sliding realize, lower base plate assembly（3）Sliding part（32）By horizontal compression
Damping energy dissipation is realized, plays a part of horizontal shock-absorbing；Work as support member（31）After bearing vertical load, bearing plate（312）It is subject to
Extruding produces vertical deformation, the bearing plate after deforming pressure-bearing（312）With lower seat board（311）Steel basin be brought into close contact, play vertical
Cushioning effect, and bearing plate（312）Deformation by steel basin outer constraint, its bursting stress receive lower seat board（311）The pole of steel basin
Limit the limitation of intensity；Meanwhile, support member（31）Fulcrum when also serving as horizontal sliding and rotating, with sliding part（32）Together
Realize horizontal shock-absorbing.
9. the shock-dampening method of polyurethane shock-absorbing bridge support as claimed in claim 8, it is characterised in that：Pacify in sliding part
The multiple elastomers being made up of polyurethane elastomer of dress, when bearing laterally unilateral sliding, lower base plate assembly（3）Middle horizontal sliding
The elastomeric element that side is made up of polyurethane elastomer（33）In compressive state, the elastomeric element of horizontal opposite side（33）It is in
Free state, and the elastomeric element of longitudinal both sides（33）With upper base plate（11）Constitute lateral sliding friction pair；When bearing transverse direction side
During to sliding, horizontal side is in the elastomeric element of compressive state（33）Affranchise state, and opposite side is in free state
Elastomeric element（33）Then become compressive state, the elastomeric element of longitudinal both sides（33）Still with upper base plate（11）Constitute lateral sliding
Friction pair；During bearing straight skidding, situation is similar with horizontal sliding.
10. the shock-dampening method of polyurethane shock-absorbing bridge support as claimed in claim 8, it is characterised in that：When bearing occurs water
When smooth shifting and rotation, middle seat board（313）The ledge of bottom lower edge is not higher by lower seat board（311）Steel basin on edge, and in
Seat board（313）Bottom not with lower seat board（311）The upper of steel basin had both ensured the steadiness of bearing along contact, also extended bearing
Service life.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156910.2A CN106884378B (en) | 2017-03-16 | 2017-03-16 | A kind of polyurethane shock-absorbing bridge support and its shock-dampening method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156910.2A CN106884378B (en) | 2017-03-16 | 2017-03-16 | A kind of polyurethane shock-absorbing bridge support and its shock-dampening method |
Publications (2)
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| CN106884378A true CN106884378A (en) | 2017-06-23 |
| CN106884378B CN106884378B (en) | 2018-11-02 |
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| CN201710156910.2A Active CN106884378B (en) | 2017-03-16 | 2017-03-16 | A kind of polyurethane shock-absorbing bridge support and its shock-dampening method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555009A (en) * | 2019-01-24 | 2019-04-02 | 湖南中腾土木工程技术有限公司 | A kind of support and beam body seismic isolation and reduction structure system and its application |
| CN110468696A (en) * | 2019-09-03 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | A kind of bridle iron with runback bit function |
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| CN2709510Y (en) * | 2004-03-16 | 2005-07-13 | 中国路桥(集团)新津筑路机械厂 | Bridge bearing for controlling lateral force |
| CN201217776Y (en) * | 2008-06-24 | 2009-04-08 | 衡水橡胶股份有限公司 | Vibration damping pot type rubber support |
| CN201762653U (en) * | 2010-07-19 | 2011-03-16 | 衡水中铁建工程橡胶有限责任公司 | Small-displacement rubber support seat of highways/bridges |
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| JPH0988009A (en) * | 1995-09-26 | 1997-03-31 | Taisei Corp | Structure base isolation device |
| JP2002220813A (en) * | 2001-01-26 | 2002-08-09 | Kaimon:Kk | Bearing device equipped with dust preventive cylindrical body |
| CN2709510Y (en) * | 2004-03-16 | 2005-07-13 | 中国路桥(集团)新津筑路机械厂 | Bridge bearing for controlling lateral force |
| CN201217776Y (en) * | 2008-06-24 | 2009-04-08 | 衡水橡胶股份有限公司 | Vibration damping pot type rubber support |
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| CN109555009A (en) * | 2019-01-24 | 2019-04-02 | 湖南中腾土木工程技术有限公司 | A kind of support and beam body seismic isolation and reduction structure system and its application |
| CN109555009B (en) * | 2019-01-24 | 2023-08-15 | 湖南中腾土木工程技术有限公司 | Support and beam body shock absorption and insulation structure system and application thereof |
| CN110468696A (en) * | 2019-09-03 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | A kind of bridle iron with runback bit function |
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| Publication number | Publication date |
|---|---|
| CN106884378B (en) | 2018-11-02 |
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