CN202744944U - High-friction seismic reduction and isolation support - Google Patents
High-friction seismic reduction and isolation support Download PDFInfo
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- CN202744944U CN202744944U CN 201220496922 CN201220496922U CN202744944U CN 202744944 U CN202744944 U CN 202744944U CN 201220496922 CN201220496922 CN 201220496922 CN 201220496922 U CN201220496922 U CN 201220496922U CN 202744944 U CN202744944 U CN 202744944U
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- base plate
- isolation support
- friction
- seat plate
- seat board
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Abstract
The utility model belongs to the technical field of bridge supports and discloses a high-friction seismic reduction and isolation support. The high-friction seismic reduction and isolation support is mainly and technically characterized by comprising a lower seat plate, a middle seat plate and an upper seat plate, wherein a planar friction pair with a low friction coefficient is arranged between the upper seat plate and the middle seat plate, a spherical friction pair with a lower friction coefficient is arranged between the middle seat plate and the lower seat plate, a base plate is arranged below the lower seat plate, a planar friction pair with a high friction coefficient is arranged between the lower seat plate and the base plate, and laminated rubber blocks are arranged between the upper seat plate and the base plate. According to the high-friction seismic reduction and isolation support disclosed by the utility model, the planar friction pair with the high friction coefficient is mainly used for dissipating seismic energy during an earthquake; when horizontal displacement is generated between the upper seat plate and the base plate, the laminated rubber blocks are subjected to shearing deformation; and the laminated rubber blocks provide horizontal restoring force, so that the lateral supporting rigidity of a bridge pier and support series system is smaller than that of a bridge pier, and the high-friction seismic reduction and isolation support can achieve effects of prolonging a period and alleviating seismic responses.
Description
Technical field
The utility model belongs to the bridge pad technical field, relates in particular to a kind of high friction vibration absorption and isolation support.
Background technology
Under geological process, the anchor block of continuous girder bridge and the fixed bearing of top thereof or horizontal freely movable bearing have born most superstructure horizontal inertial force at vertical bridge.If do not allow fixed bearing or laterally freely movable bearing generation length travel (namely not allowing support damage), the horizontal force of its transmission will be quite large, design very difficult.Very large horizontal force action also will be born in anchor block and basis thereof in addition, cause the difficulty in the design.Even can adopt Ductility Design moulding hinge allow to occur to bridge pier, according to the capacity protection design principle, the basis can not failure, need pay a high price for guaranteeing its shock resistance.
The thought of seismic isolation design is in the position of bridge pad vibration absorption and isolation support to be set, and the prolongation cycle by vibration absorption and isolation support reduces the superstructure horizontal inertial force, reduces the displacement response of earthquake by the power consumption of vibration absorption and isolation support.Thereby its bridge pier, the basis often do not need to carry out special design, cost is relatively low.Provide necessarily subtract the shock insulation ability in, vibration absorption and isolation support also needs to satisfy bridge requirement used in everyday.Often there are the shortcomings such as price is higher, unstable properties, installation is inconvenient, maintenance is difficult in the vibration absorption and isolation support that uses in the engineering at present.
The utility model content
The technical problems to be solved in the utility model just provides that a kind of cost is low, great friction coefficient, height of support is little, horizontal movement is large, horizontal rigidity is easy to accurately control and excursion is very large, the height friction vibration absorption and isolation support of not raising phenomenon.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: comprise lower seat board, middle seat board, upper base plate, be provided with the low-friction coefficient flat frictional pair between upper base plate and middle seat board, be provided with low-friction coefficient sphere friction pair between middle seat board and lower seat board, be provided with base plate below the described lower seat board, be provided with the great friction coefficient flat frictional pair between lower seat board and base plate, be provided with the laminated rubber piece between upper base plate and base plate.
Its additional technical feature is: the two ends of described laminated rubber piece connect as one or fix by bolt with lower seat board and base plate sulfuration respectively; The level that is provided with in the described laminated rubber piece steel plate of putting more energy into; Described upper base plate is provided with block; Described base plate is provided with shear pin; Be provided with upper slide above the described upper base plate, upper strata low-friction coefficient flat frictional pair is set between upper base plate and upper slide.
When a kind of high friction vibration absorption and isolation support provided by the utility model used, base plate was connected with Bridge Pier or bent cap, and upper base plate is connected with the bridge beam body bottom.Upper base plate middle part, middle seat board, the lower seat board of high friction vibration absorption and isolation support have consisted of a common spherical bearing, can transmit vertical force, horizontal force, and adapt to the requirement of corner.Low-friction coefficient flat frictional pair and low-friction coefficient sphere friction pair are mainly used in adapting to the requirement of corner, and the great friction coefficient flat frictional pair between lower seat board and base plate is mainly used in dissipation earthquake ability in the earthquake.Generating horizontal displacement between upper base plate and base plate, shear strain will occur in the laminated rubber piece.Provide level to restoring force by the laminated rubber piece, so that the lateral-supporting rigidity of bridge pier and bearing train is less than the lateral-supporting rigidity of bridge pier, thereby play the prolongation cycle, reduce the effect of seismic response.The laminated rubber piece is made by corrosion resistance, lower temperature resistance, the good elastomeric material of durability, the two ends of laminated rubber piece connect as one or fix by bolt with lower seat board and base plate sulfuration respectively, the level that can arrange in the laminated rubber piece steel plate of putting more energy into provides certain vertical rigidity, and constraint rubber external drum.That the laminated rubber piece can be arranged in is one-sided, both sides or all around.And upper base plate is provided with block, and base plate is provided with shear pin, and block and shear pin all are used to bear horizontal force, difference is that the design bearing capacity of block is larger, all can not destroy under the where shake effect in office, and the design bearing capacity of shear pin is smaller, should cut off under large shake effect.By upper slide is set on upper base plate, upper strata low-friction coefficient flat frictional pair is set between upper base plate and upper slide, so that vibration absorption and isolation support can be divided three classes: two-way height friction vibration absorption and isolation support, the horizontal high friction vibration absorption and isolation support of longitudinally-moving and horizontal movable vertical high friction vibration absorption and isolation support also cooperate the use of bi-directional movable bearing.In two-way high friction vibration absorption and isolation support, the laminated rubber piece is connected respectively up and down base plate and is connected with upper base plate, generating horizontal displacement between upper base plate and base plate, and shear strain will occur in the laminated rubber piece.Laterally in the high friction vibration absorption and isolation support, other structures are all identical with the effect in the two-way high friction vibration absorption and isolation support at longitudinally-moving, and can relative sliding between upper slide and the upper base plate, adapt to the vertical equity displacement request in normal the use.In horizontal movable vertically high friction vibration absorption and isolation support, other structures are all identical with the effect in the two-way high friction vibration absorption and isolation support, can relative sliding between upper slide and the upper base plate, adapt to the transverse horizontal displacement requirement in normal the use.
Adopt a kind of high friction vibration absorption and isolation support of such scheme to have following characteristics:
1, bidirectional protective: device and beam body be by bolt or welding, can restrainer, and stop the beam body to come off from bearing;
2, damping energy dissipation capacity: play the effect of dissipation seismic energy by the friction pair of great friction coefficient;
3, the prolongation cycle: provide level to restoring force by the laminated rubber piece, so that the lateral-supporting rigidity of bridge pier and bearing train is less than the lateral-supporting rigidity of bridge pier, thereby play the prolongation cycle, reduce the effect of seismic response;
4, have designability: the parameters such as friction factor of the friction pair of height, sectional dimension and shape, modulus of elasticity and great friction coefficient that can be by adjusting the laminated rubber piece, controlled design is carried out in energy dissipation capacity, slip rigidity and maximum displacement etc.;
5, on-the-spot installation is simple, convenient, quality is guaranteed: high friction seismic isolation device becomes as a whole with spherical bearing, and on-the-spot mounting method is identical with general spherical bearing, can ensure the quality of products.
Description of drawings
Fig. 1 is that the utility model is fixed the vertical bridge of high friction vibration absorption and isolation support to structural representation;
Fig. 2 is the direction across bridge structural representation of fixing high friction vibration absorption and isolation support;
Fig. 3 be longitudinally-moving laterally the vertical bridge of high friction vibration absorption and isolation support to structural representation;
Fig. 4 is the laterally direction across bridge structural representation of high friction vibration absorption and isolation support of longitudinally-moving.
The specific embodiment
Below in conjunction with accompanying drawing a kind of high friction vibration absorption and isolation support provided by the utility model is described in further details.
As shown in Figure 1, a kind of high friction vibration absorption and isolation support provided by the utility model comprises lower seat board 1, middle seat board 2, upper base plate 3,2 of upper base plate 3 and middle seat boards are provided with low-friction coefficient flat frictional pair 4, middle seat board 2 and 3 of lower seat boards are provided with low-friction coefficient sphere friction pair 5, be provided with base plate 6 below the lower seat board 1,6 of lower seat board 1 and base plates are provided with great friction coefficient flat frictional pair 7, and upper base plate 3 is provided with block 10, and base plate 6 is provided with shear pin 11.As shown in Figure 2, a kind of high friction vibration absorption and isolation support comprises lower seat board 1, middle seat board 2, upper base plate 3,2 of upper base plate 3 and middle seat boards are provided with low-friction coefficient flat frictional pair 4, middle seat board 2 and 3 of lower seat boards are provided with low-friction coefficient sphere friction pair 5, be provided with base plate 6 below the lower seat board 1,6 of lower seat board 1 and base plates are provided with great friction coefficient flat frictional pair 7,6 of upper base plate 3 and base plates are provided with laminated rubber piece 8, the two ends of laminated rubber piece 8 connect as one or fix by bolt with lower seat board 1 and base plate 6 sulfurations respectively, the level that is provided with in the laminated rubber piece 8 steel plate 9 of putting more energy into, upper base plate 3 is provided with block 10, and base plate 6 is provided with shear pin 11.Shown in Fig. 3,4, be provided with upper slide 12 above the upper base plate 3,12 of upper base plate 3 and upper slides arrange upper strata low-friction coefficient flat frictional pair 13.
When a kind of high friction vibration absorption and isolation support provided by the utility model used, base plate 6 was connected with Bridge Pier or bent cap, and upper base plate 3 is connected with the bridge beam body bottom.Upper base plate 3 middle parts, middle seat board 2, the lower seat board 1 of high friction vibration absorption and isolation support have consisted of a common spherical bearing, can transmit vertical force, horizontal force, and adapt to the requirement of corner.Low-friction coefficient flat frictional pair 4 and low-friction coefficient sphere friction pair 5 are mainly used in adapting to the requirement of corner, and the great friction coefficient flat frictional pair 7 that lower seat board 1 and base plate are 6 is mainly used in dissipation earthquake ability in the earthquake.Generating horizontal displacement between upper base plate 3 and base plate 6, shear strain will occur in laminated rubber piece 8.Provide level to restoring force by laminated rubber piece 8, so that the lateral-supporting rigidity of bridge pier and bearing train is less than the lateral-supporting rigidity of bridge pier, thereby play the prolongation cycle, reduce the effect of seismic response.Laminated rubber piece 8 is made by corrosion resistance, lower temperature resistance, the good elastomeric material of durability, the two ends of laminated rubber piece 8 connect as one or fix by bolt with lower seat board 3 and base plate 6 sulfurations respectively, the level that can arrange in the laminated rubber piece 8 steel plate 9 of putting more energy into provides certain vertical rigidity, and constraint rubber external drum.That laminated rubber piece 8 can be arranged in is one-sided, both sides or all around.And upper base plate 3 is provided with block 10, base plate 6 is provided with shear pin 11, block 10 and shear pin 11 all are used to bear horizontal force, difference is that the design bearing capacity of block 10 is larger, all can not destroy under the where shake effect in office, and the design bearing capacity of shear pin 11 is smaller, should be cut off under large shake effect.By upper slide 12 is set on upper base plate 3,12 of upper base plate 3 and upper slides arrange upper strata low-friction coefficient flat frictional pair 13, so that vibration absorption and isolation support can be divided three classes: two-way height friction vibration absorption and isolation support, the horizontal high friction vibration absorption and isolation support of longitudinally-moving and horizontal movable vertical high friction vibration absorption and isolation support also cooperate the use of bi-directional movable bearing.In two-way high friction vibration absorption and isolation support, laminated rubber piece 8 is connected with upper base plate respectively up and down, base plate 6 connects, generating horizontal displacement between upper base plate 3 and base plate 6, and shear strain will occur in laminated rubber piece 8.Laterally in the high friction vibration absorption and isolation support, other structures are all identical with the effect in the two-way high friction vibration absorption and isolation support at longitudinally-moving, and can relative sliding between upper slide 12 and the upper base plate 3, adapt to the vertical equity displacement request in normal the use.In horizontal movable vertically high friction vibration absorption and isolation support, other structures are all identical with the effect in the two-way high friction vibration absorption and isolation support, can relative sliding between upper slide 12 and the upper base plate 3, adapt to the transverse horizontal displacement requirement in normal the use.
As a kind of conversion of the utility model embodiment, the common bearing of cooperation can also adopt other types and index except spherical bearing.
A kind of high friction vibration absorption and isolation support provided by the utility model is not limited only to said structure, bearing also can be other shapes such as round, oval, the scope of friction pair friction factor can be between 0.05 ~ 0.30, and the parameter of laminated rubber piece all can be carried out design modifying as required.The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art should be within protection domain of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (6)
1. one kind high friction vibration absorption and isolation support, comprise lower seat board, middle seat board, upper base plate, be provided with the low-friction coefficient flat frictional pair between upper base plate and middle seat board, be provided with low-friction coefficient sphere friction pair between middle seat board and lower seat board, it is characterized in that: be provided with base plate below the described lower seat board, be provided with the great friction coefficient flat frictional pair between lower seat board and base plate, be provided with the laminated rubber piece between upper base plate and base plate.
2. a kind of high friction vibration absorption and isolation support according to claim 1 is characterized in that: the two ends of described laminated rubber piece connect as one or fix by bolt with lower seat board and base plate sulfuration respectively.
3. a kind of high friction vibration absorption and isolation support according to claim 1 and 2 is characterized in that: the level that is provided with in the described laminated rubber piece steel plate of putting more energy into.
4. a kind of high friction vibration absorption and isolation support according to claim 1, it is characterized in that: described upper base plate is provided with block.
5. a kind of high friction vibration absorption and isolation support according to claim 1, it is characterized in that: described base plate is provided with shear pin.
6. a kind of high friction vibration absorption and isolation support according to claim 1 is characterized in that: be provided with upper slide above the described upper base plate, upper strata low-friction coefficient flat frictional pair is set between upper base plate and upper slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496922 CN202744944U (en) | 2012-09-26 | 2012-09-26 | High-friction seismic reduction and isolation support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496922 CN202744944U (en) | 2012-09-26 | 2012-09-26 | High-friction seismic reduction and isolation support |
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| CN202744944U true CN202744944U (en) | 2013-02-20 |
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| CN 201220496922 Expired - Fee Related CN202744944U (en) | 2012-09-26 | 2012-09-26 | High-friction seismic reduction and isolation support |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839603A (en) * | 2012-09-26 | 2012-12-26 | 彭天波 | High-friction antivibration support and preparation method thereof |
| CN103510464A (en) * | 2013-10-28 | 2014-01-15 | 中铁第一勘察设计院集团有限公司 | Bispherical seismic-isolation and reduction support with hemispheres in same direction |
| CN104032670A (en) * | 2014-06-11 | 2014-09-10 | 同济大学 | Large-corner high-friction shock-absorbing and shock-isolating support |
| CN109811638A (en) * | 2019-01-21 | 2019-05-28 | 江苏大学 | A kind of friction pendulum Self-resetting earthquake isolating equipment based on STP |
-
2012
- 2012-09-26 CN CN 201220496922 patent/CN202744944U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839603A (en) * | 2012-09-26 | 2012-12-26 | 彭天波 | High-friction antivibration support and preparation method thereof |
| CN102839603B (en) * | 2012-09-26 | 2015-01-28 | 彭天波 | Preparation method of high-friction antivibration support |
| CN103510464A (en) * | 2013-10-28 | 2014-01-15 | 中铁第一勘察设计院集团有限公司 | Bispherical seismic-isolation and reduction support with hemispheres in same direction |
| CN103510464B (en) * | 2013-10-28 | 2015-09-09 | 中铁第一勘察设计院集团有限公司 | With ball to Bispherical seismic isolation support |
| CN104032670A (en) * | 2014-06-11 | 2014-09-10 | 同济大学 | Large-corner high-friction shock-absorbing and shock-isolating support |
| CN104032670B (en) * | 2014-06-11 | 2015-11-25 | 同济大学 | A kind of large corner high friction antivibration support |
| CN109811638A (en) * | 2019-01-21 | 2019-05-28 | 江苏大学 | A kind of friction pendulum Self-resetting earthquake isolating equipment based on STP |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |