CN107217586B - Lead for retractable pencil damps pot rubber bearing and its damping method - Google Patents
Lead for retractable pencil damps pot rubber bearing and its damping method Download PDFInfo
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- CN107217586B CN107217586B CN201610159678.3A CN201610159678A CN107217586B CN 107217586 B CN107217586 B CN 107217586B CN 201610159678 A CN201610159678 A CN 201610159678A CN 107217586 B CN107217586 B CN 107217586B
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- retractable pencil
- upper bracket
- damper bar
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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
- E01D19/047—Pot bearings
-
- 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
- E01D19/041—Elastomeric bearings
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- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Lead for retractable pencil damps pot rubber bearing, including the bottom basin being laterally arranged, the rubber pad being set in bottom basin, it is placed on rubber pad and from the piston stretched out in bottom basin and the upper bracket plate being placed on piston, piston is the U shape of upward opening, upper bracket plate is inserted into the upward opening of piston, and it is stretched out from piston, upper bracket plate is fixed with piston by the shear-pin of vertical setting, face interval forms circular earthquake displacement slot on the inside of upper bracket plate and piston, anchor ring rubber is clamped between the inner sidewall and piston of bottom basin, reserved cavity is equipped between upper bracket plate and piston, lead for retractable pencil damper bar with vertical setting in reserved cavity, in the upper end insertion upper bracket plate of lead for retractable pencil damper bar, lower end is embedded in piston, circumferential deformation space is formed between middle part and the side wall of reserved cavity.Support provided by the invention, damping element is set to inside support, and support damping vibration attenuation energy consumption effect is good and compact-sized.The present invention also provides the damping methods of lead for retractable pencil damping pot rubber bearing.
Description
Technical field
The present invention relates to a kind of lead for retractable pencil damping pot rubber bearing and its damping methods, by the internal structure of inner seat
Damper bar is set, enhances the lateral damping characteristic of support, achievees the purpose that vibration damping, belong to science of bridge building antivibration area.
Background technique
In existing pot bearing, common pot bearing born using the rubber pad being placed in bottom basin vertical load and
It is applicable in the requirement of corner needed for bridge use process, and usually used is General Purpose Rubber, is damped very low.For that can slide
Dynamic pot bearing is fixed between piston and upper bracket plate with shear-pin, and the horizontal rigidity of support is increased, in normal use or
In the case where E1 earthquake (common earthquake), the stable structure of support is kept by the shearing force of shear-pin.It is (rare when encountering E2 earthquake
Meet earthquake) in the case where, the horizontal inertial force of beam body makes the shearing force of shear-pin split off power greater than it, and shear-pin is split off, then is led to
The sliding friction pair crossed between upper bracket and piston carrys out earthquake energy, sliding friction pair generally by tetrafluoroethene plate with it is stainless
Steel plate is constituted, and coefficient of friction is lower, and energy dissipating is limited, and the effectiveness in vibration suppression of support is general.For the use model for widening pot bearing
It encloses, increase energy dissipation capacity, have devised parallel energy-dissipating type pot bearing, the structure of the support is in pot bearing surrounding point
Cloth steel damping element provides additional damping by steel damping element for support, entitled such as application No. is 201410375820.9
The Chinese invention patent of " a kind of steel damping slide board rubber support and its damping method ", passes through additional lateral damping element and longitudinal direction
Damping element provides additional lateral rigidity for support.But one outstanding problem of this class formation is exactly, due to steel damping element
It is distributed in pot bearing surrounding, this dramatically increases the planar dimension of support upper and lower bottom plate, is unfavorable for minimizing, and its plane meter
Very little increase inevitable requirement bent cap size adapts to therewith, then needs to increase bent cap size, be directed at the installation of support to bent cap and pier
The complement of column is high, and the popularization for influencing support is practical.
Summary of the invention
Lead for retractable pencil provided by the invention damps pot rubber bearing, by the structure to pot rubber bearing in the prior art into
Row improves, and damping element is set to inside support, support damping vibration attenuation energy consumption effect is good and compact-sized.The present invention also provides
The damping method of lead for retractable pencil damping pot rubber bearing.
In order to achieve the above objectives the technical solution adopted by the present invention is that: lead for retractable pencil damp pot rubber bearing, including laterally set
The bottom basin set, the rubber pad being set in bottom basin are placed on rubber pad and from the piston stretched out in bottom basin and are placed on piston
Upper bracket plate, piston are the U shape of upward opening, and upper bracket plate is inserted into the upward opening of piston, and is stretched from piston
Out, upper bracket plate is fixed with piston by the shear-pin of vertical setting, and upper bracket plate forms circular with face interval on the inside of piston
Earthquake displacement slot clamps anchor ring rubber, it is characterised in that the upper bracket plate and piston between the inner sidewall and piston of bottom basin
Between be equipped with reserved cavity, the lead for retractable pencil damper bar with vertical setting in the reserved cavity, the lead for retractable pencil damper bar
Upper end is embedded in upper bracket plate, and lower end is embedded in piston, and circumferential deformation space is formed between middle part and the side wall of reserved cavity.
Above-described lead for retractable pencil damping pot rubber bearing passes through shear-pin under normal work or E1 seismic condition
The yield force of clipping power and lead for retractable pencil damper bar keeps the stabilization of support, and under E2 seismic condition, shear-pin is by beam body horizontal inertial
Power is split off, and the yield force of lead for retractable pencil damper bar is not enough to maintain the stabilization of support, and upper bracket plate and piston occur opposite sliding, drive
In circumferential deformation space elastic-plastic deformation occurs for lead for retractable pencil damper bar, and the deformation by lead for retractable pencil damper bar is upper bracket plate and piston
Opposite sliding certain resistance, and earthquake energy are provided, achieve the purpose that damping.Wherein, in upper bracket plate and piston
Between reserved cavity is set, be set to the lead for retractable pencil damper bar with damping characteristic inside support, do not increase upper bracket and piston
Planar dimension, the structure of support is more compact, low to the complement of bent cap and pier stud, more conducively promotes practical.And benefit
It is deformed at room temperature with lead, it will while Dynamic- Recovery and Dynamic Recrystallization occurs, by restoring and recrystallizing
The characteristics of journey, strain hardening will disappear, and the tissue and performance of lead will then revert to the state before deformation, the deformation consumption of lead for retractable pencil damper bar
Seismic energy, and accumulated fatigue will not be generated in deformation cycle, lead for retractable pencil damper bar is compared with steel damping element in the prior art
The service life is longer.
Preferably, the diameter of lead for retractable pencil damper bar is D1, and earthquake displacement groove width is D2, and the diameter in circumferential deformation space is
D3, D1+2D2≤D3.The width D 2 of earthquake Bit Shift slot is the maximum horizontal displacement of support when E2 earthquake occurs.
Preferably, the shear-pin is spaced apart side by side along the middle line of upper bracket plate and piston interface, and described is pre-
Chamber of leaving a blank is distributed in the outside of shear-pin.
Preferably, the reserved cavity is that circular array is distributed or rectangular array is distributed.
Preferably, the upper bracket plate base diameter is D4, and the internal diameter of piston is D5, D5 ≈ 1.05 × (D4+D2).
Preferably, the reserved cavity from top to bottom by be provided in upper bracket plate upper blind hole, central cavity and open
The lower blind hole connection composition being located in piston, the upper diameter of blind hole and lower diameter of blind hole are equal to lead for retractable pencil damper bar
Diameter, the upper end of lead for retractable pencil damper bar are inserted into upper blind hole, and lower end is inserted into lower blind hole, shape between middle part and the side wall of central cavity
For cyclization to deformation space, it is lead for retractable pencil damper bar that lead for retractable pencil damper bar, which is inserted into the length of blind hole and is inserted into the length of lower blind hole,
/ 5th of length.
Preferably, polyfluortetraethylene plate is arranged in the upper bracket plate bottom surface, contacts in piston with upper bracket plate bottom surface
Stainless steel plate is set on face.
Using the damping method of above-mentioned lead for retractable pencil damping pot rubber bearing, opened between the upper bracket plate and piston
If reserved cavity, vertical lead for retractable pencil damper bar, the upper end insertion of the lead for retractable pencil damper bar are set in the reserved cavity
In upper bracket plate, lower end is embedded in piston, circumferential deformation space is formed between middle part and the side wall of reserved cavity, by described
Deformation of the lead for retractable pencil damper bar in circumferential deformation space provides damping for support and makees in the case where earthquake splits off shear-pin
With achieving the purpose that vibration damping.
Preferably, support work normally or E1 seismic condition under, pass through the clipping power of shear-pin and lead for retractable pencil damper bar
Yield force keeps the stabilization of support, and under E2 seismic condition, shear-pin is split off by beam body horizontal inertial force, and lead for retractable pencil damper bar is bent
The stabilization that power is not enough to maintain support is taken, upper bracket plate and piston occur opposite sliding, drive lead for retractable pencil damper bar in circumferential deformation
Elastic-plastic deformation occurs in space, is provided by the deformation of lead for retractable pencil damper bar for the opposite sliding of upper bracket plate and piston certain
Resistance, and earthquake energy, achieve the purpose that damping.
Preferably, it is empty must to meet deformation of the lead for retractable pencil damper bar under support maximum horizontal displacement for the circumferential deformation space
Between demand, the width of the earthquake displacement slot must meet lead for retractable pencil damper bar occur elastic-plastic deformation horizontal displacement demand, institute
Quantity, size and the distribution situation of the lead for retractable pencil damper bar and shear-pin stated are set all in accordance with the actual needs of bridge where support
Meter, wherein the upper end of lead for retractable pencil damper bar is clamped in the upper blind hole in upper bracket plate, and lower end is clamped in the lower blind hole in piston.
The invention has the benefit that
1, the damping capacity of lead for retractable pencil damper bar is good, and fatigue behaviour is high, and support damping vibration attenuation energy consumption effect is good.
2, lead for retractable pencil damper bar is arranged inside support, keeps seat structure more compact, and installation is without increasing bent cap size.
3, structure is simple, easy to assembly, can design the quantity of lead for retractable pencil damper bar according to the actual needs of bridge where support.
4, upper bracket, piston and bottom basin are sequentially inserted into formula displacement structure, can realize girder falling function in E2 earthquake.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the lead for retractable pencil damping pot rubber bearing in specific embodiment.
Fig. 2 is the partial enlarged view of Fig. 1.
Fig. 3 is not provided with structural schematic diagram when lead for retractable pencil damper bar between upper bracket plate and piston.
Fig. 4 is the sectional view along A-A of Fig. 3.
Cross-sectional view when Fig. 5 is the lead for retractable pencil damping pot rubber bearing maximum horizontal displacement in specific embodiment.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention.
As shown in Figures 1 to 4, lead for retractable pencil damp pot rubber bearing, including be laterally arranged bottom basin 1, be set in bottom basin 1
Rubber pad 2, be placed on rubber pad 2 and from the piston 3 stretched out in bottom basin 1 and the upper bracket plate 4 being placed on piston 3, piston 3 is
The U shape of upward opening, upper bracket plate 4 are inserted into the upward opening of piston 3, and are stretched out from piston 3, upper bracket plate 4 with
Piston 3 is fixed by the shear-pin 5 of vertical setting, and upper bracket plate 4 and 3 inside face interval of piston form circular earthquake displacement slot
6, anchor ring rubber 7 is clamped between the inner sidewall and piston 3 of bottom basin 1, is equipped between the upper bracket plate 4 and piston 3 and is left a blank in advance
Chamber 8, with the lead for retractable pencil damper bar 9 of vertical setting in the reserved cavity 8, in the upper end insertion of the lead for retractable pencil damper bar 9
In support plate 4, lower end is embedded in piston 3, and circumferential deformation space 81 is formed between middle part and the side wall of reserved cavity 8.
Above-described lead for retractable pencil damps pot rubber bearing, and the rubber pad 2 in bottom basin 1 is uneven under the effect of piston 3
It deforms to realize the angle turning function of support, upper bracket 4, piston 3 and bottom basin 1 are sequentially inserted into formula displacement structure, can be in E2 earthquake
Shi Shixian girder falling function.Under normal work or E1 seismic condition, pass through the clipping power 5 of shear-pin and lead for retractable pencil damper bar 9
Yield force keeps the stabilization of support, and under E2 seismic condition, shear-pin 5 is split off by beam body horizontal inertial force, lead for retractable pencil damper bar 9
Yield force is not enough to maintain the stabilization of support, and upper bracket plate 4 occurs to slide relatively with piston 3, drives lead for retractable pencil damper bar 9 in circumferential direction
Elastic-plastic deformation occurs in deformation space, the deformation by lead for retractable pencil damper bar 9 is that upper bracket plate 4 and the sliding relatively of piston 3 mention
For certain resistance, and earthquake energy, achieve the purpose that damping.Reserved cavity is set between upper bracket plate 4 and piston 3
8, it is set to the lead for retractable pencil damper bar 9 with damping characteristic inside support, does not increase the planar dimension of upper bracket 4 and piston 3, prop up
The structure of seat is more compact, low to the complement of bent cap and pier stud, more conducively promotes practical.And using lead in room temperature condition
Lower deformation, it will while Dynamic- Recovery and Dynamic Recrystallization occurs, it will be disappeared by recovery and recrystallization process, strain hardening
The characteristics of mistake, the tissue and performance of lead will then revert to the state before deformation, the deformation earthquake energy of lead for retractable pencil damper bar 9, and
Will not generate accumulated fatigue in deformation cycle, lead for retractable pencil damper bar 9 compared with steel damping element in the prior art service life more
It is long.
Wherein, circumferential deformation space 81 requires to be able to satisfy deformation sky of the lead for retractable pencil damper bar 9 under support maximum horizontal displacement
Between demand, the too small lead for retractable pencil damper bar 9 that is unfavorable in circumferential deformation space 81 occurs bending and deformation, in addition can only occur it is shear-deformable,
It is unfavorable for making full use of for lead for retractable pencil material.To meet deformation space demand of the lead for retractable pencil damper bar 9 under support maximum horizontal displacement,
The diameter of lead for retractable pencil damper bar 9 is D1, and 6 width of earthquake displacement slot is D2, and the diameter in circumferential deformation space 81 is D3, D1+2D2≤
D3.Wherein the width D 2 of earthquake Bit Shift slot is the maximum horizontal displacement of support when E2 earthquake occurs.As shown in figure 5, support
When generating maximum horizontal displacement, circumferential deformation space 81 has enough spaces to meet the deformation space demand of lead for retractable pencil damper bar 9, makes
Lead for retractable pencil damper bar 9 can give full play to damping characteristic, efficient earthquake energy.
In specific structure, it can be seen from figure 4 that the shear-pin 5 is along upper bracket plate 4 and 3 contact surface of piston
Line is spaced apart side by side, and the reserved cavity 8 is distributed in the outside of shear-pin 5.The reserved cavity 8 is circular array point
Cloth.For convenient formation, reserved cavity 8 is arranged in the outside of shear-pin 5, to make the horizontal rigidity of support be more evenly distributed,
By reserved cavity 8 be designed to circular array distribution or rectangular array distribution, make support when bearing horizontal force, upper bracket plate 4 and
Rigidity is consistent on 3 contact surface of piston, during being more favorably used in the deformation of lead for retractable pencil damper bar 9, keeps the stabilization of the structure of support.
In practice, quantity, size and the distributing position of reserved cavity 8 are adjusted according to the actual bearer situation of bridge where support
It is whole.
In specific structure, 4 base diameter of upper bracket plate is D4, and the internal diameter of piston 3 is D5, D5 ≈ 1.05 × (D4+
D2).In E2 earthquake, shear-pin 5 is broken off, and upper bracket plate 4 must be slided on piston 3, just lead for retractable pencil damper bar 9 can be made to become
Shape, and upper bracket plate 4 must meet the horizontal displacement need that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9 relative to the displacement of piston 3
It asks, therefore the internal diameter of piston 3 will be determined according to the diameter of 4 bottom of upper bracket plate and the maximum horizontal displacement of support, 5 folding of shear-pin
It has no progeny, the maximum displacement that upper bracket plate 4 is slided relative to piston 3, the i.e. width D 2 of earthquake displacement slot 3, D5 ≈ 1.05 × (D4+
D2), make upper bracket plate 4 that can sufficiently meet the displacement that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9 relative to the displacement of piston 3
It asks.From figure 5 it can be seen that upper bracket plate 4 slides into most relative to piston 3 when upper bracket plate 4 is contacted with 3 inner sidewall of piston
Big displacement, at this point, elastic-plastic deformation has occurred for lead for retractable pencil damper bar 9, seismic energy is largely consumed.
In specific structure, lead for retractable pencil damper bar 9 is located between upper bracket plate 4 and piston 3 for convenience, described is reserved
Upper blind hole 82, central cavity 83 and the lower blind hole being provided in piston 3 by being provided in upper bracket plate 4 from top to bottom of cavity 8
The diameter of 84 connection compositions, the diameter of the upper blind hole 82 and lower blind hole 84 is equal to the diameter of lead for retractable pencil damper bar 9, lead for retractable pencil resistance
The upper end of Buddhist nun's stick 9 is inserted into upper blind hole 82, and lower end is inserted into lower blind hole 84, forms ring between middle part and the side wall of central cavity 83
To deformation space 81, it is lead for retractable pencil resistance that lead for retractable pencil damper bar 9, which is inserted into the length of blind hole 82 and is inserted into the length of lower blind hole 84,
/ 5th of 9 length of Buddhist nun's stick.The length that lead for retractable pencil damper bar 9 is inserted between blind hole 82 and lower blind hole 84 is its length
1/5th, that is, it can guarantee that the both ends of lead for retractable pencil damper bar 9 are firmly positioned, and lead for retractable pencil damper bar 9 is made to have enough length
For elastic-plastic deformation, earthquake energy makes the damping of lead for retractable pencil damper bar 9 reach best.
Polyfluortetraethylene plate is arranged in 4 bottom surface of upper bracket plate, on the face that piston 3 is contacted with 4 bottom surface of upper bracket plate
Stainless steel plate is set.A pair of friction by polyfluortetraethylene plate and stainless steel plate component is set between lower support plate 4 and piston 3
Pair can consume part energy, when increasing E2 earthquake, the energy consumption of support subtracts in the sliding opposite relative to piston 3 of lower seat board 4
Vibration effect.It simultaneously can also be appropriate to reduce lead for retractable pencil damping by the setting of the friction pair of polyfluortetraethylene plate and stainless steel plate component
The size and quantity of stick 9, to reduce the cost of manufacture of support.
Using the damping method of above-described lead for retractable pencil damping pot rubber bearing, in the upper bracket plate 4 and piston 3
Between open up reserved cavity 8, vertical lead for retractable pencil damper bar 9, the lead for retractable pencil damper bar 9 are set in the reserved cavity 8
Upper end insertion upper bracket plate 4 in, lower end is embedded in piston 3, and it is empty that circumferential deformation is formed between middle part and the side wall of reserved cavity 8
Between 81, through deformation of the lead for retractable pencil damper bar 9 in circumferential deformation space 81, the case where earthquake splits off shear-pin 5
Under, damping action is provided for support, achievees the purpose that vibration damping.
Specifically, passing through the clipping power and lead for retractable pencil damper bar 9 of shear-pin 5 under support normal work or E1 seismic condition
Yield force keep support stabilization, under E2 seismic condition, shear-pin 5 is split off by beam body horizontal inertial force, lead for retractable pencil damper bar 9
Yield force be not enough to maintain the stabilization of support, upper bracket plate 2 and piston 3 occur it is opposite slide, drive lead for retractable pencil damper bar 9 in ring
Elastic-plastic deformation occurs into deformation space 81, is the relatively sliding of upper bracket plate 2 and piston 3 by the deformation of lead for retractable pencil damper bar 9
It is dynamic that certain resistance, and earthquake energy are provided, achieve the purpose that damping.
Specifically, the circumferential deformation space 81 must meet change of the lead for retractable pencil damper bar 9 under support maximum horizontal displacement
Shape space requirement, the width of the earthquake displacement slot 6 must meet the horizontal displacement need that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9
It asks, the practical need of quantity, size and the distribution situation of the lead for retractable pencil damper bar 9 and shear-pin 5 all in accordance with bridge where support
It is designed, wherein the upper end of lead for retractable pencil damper bar 9 is clamped in the upper blind hole 82 in upper bracket plate 4, and lower end is clamped on piston 3
In lower blind hole 84 in.
The present invention has the advantages that the damping capacity of lead for retractable pencil damper bar is good, fatigue behaviour is high, support damping vibration attenuation energy consumption effect
Fruit is good.Lead for retractable pencil damper bar is arranged inside support, keeps seat structure more compact, and installation is without increasing bent cap size.Structure is simple,
It is easy to assembly, the quantity of lead for retractable pencil damper bar can be designed according to the actual needs of bridge where support.Upper bracket, piston and bottom basin
It is sequentially inserted into formula displacement structure, girder falling function can be realized in E2 earthquake.
It is completely described in conjunction with technical solution of the attached drawing to the embodiment of the present invention above, it should be noted that described
Embodiment be only a part of the embodiments of the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Claims (10)
1. lead for retractable pencil damp pot rubber bearing, including the bottom basin (1) being laterally arranged, the rubber pad (2) being set in bottom basin (1),
It is placed on rubber pad (2) and the piston (3) stretched out from bottom basin (1) and the upper bracket plate (4) being placed on piston (3), piston (3)
For the U shape of upward opening, upper bracket plate (4) is inserted into the upward opening of piston (3), and is stretched out from piston (3), on
Support plate (4) and piston (3) are fixed by the shear-pin (5) of vertical setting, face interval on the inside of upper bracket plate (4) and piston (3)
Circular earthquake displacement slot (6) is formed, clamps anchor ring rubber (7) between the inner sidewall and piston (3) of bottom basin (1), feature exists
It is equipped between the upper bracket plate (4) and piston (3) reserved cavity (8), there is vertical set in the reserved cavity (8)
The upper end of the lead for retractable pencil damper bar (9) set, the lead for retractable pencil damper bar (9) is embedded in upper bracket plate (4), and lower end is embedded in piston (3)
In, circumferential deformation space (81) are formed between middle part and the side wall of reserved cavity (8).
2. lead for retractable pencil according to claim 1 damps pot rubber bearing, it is characterised in that the diameter of lead for retractable pencil damper bar (9) is
D1, earthquake displacement slot (6) width are D2, and the diameter of circumferential deformation space (81) is D3, D1+2D2≤D3.
3. lead for retractable pencil according to claim 2 damps pot rubber bearing, it is characterised in that the shear-pin (5) is along upper branch
Seat board (4) and the middle line of piston (3) contact surface are spaced apart side by side, and the reserved cavity (8) is distributed in the outer of shear-pin (5)
Side.
4. lead for retractable pencil according to claim 3 damps pot rubber bearing, it is characterised in that the reserved cavity (8) is circle
Shape array distribution or rectangular array distribution.
5. lead for retractable pencil according to claim 4 damps pot rubber bearing, it is characterised in that described upper bracket plate (4) bottom
Diameter is D4, and the internal diameter of piston (3) is D5, D5 ≈ 1.05 × (D4+D2).
6. lead for retractable pencil according to claim 5 damps pot rubber bearing, it is characterised in that the reserved cavity (8) is from upper
Upper blind hole (82), central cavity (83) and the lower blind hole being provided in piston (3) under by being provided in upper bracket plate (4)
(84) connection composition, the diameter of the upper blind hole (82) and the diameter of lower blind hole (84) are equal to the straight of lead for retractable pencil damper bar (9)
The upper end of diameter, lead for retractable pencil damper bar (9) is inserted into upper blind hole (82), and lower end is inserted into lower blind hole (84), middle part and central cavity
(83) circumferential deformation space (81) are formed between side wall, lead for retractable pencil damper bar (9) is inserted into the length and insertion of blind hole (82)
Length to lower blind hole (84) is 1/5th of lead for retractable pencil damper bar (9) length.
7. lead for retractable pencil according to claim 6 damps pot rubber bearing, it is characterised in that described upper bracket plate (4) bottom surface
Polyfluortetraethylene plate is set, stainless steel plate is set on the face that piston (3) is contacted with upper bracket plate (4) bottom surface.
8. passing through the lead for retractable pencil damper bar using the damping method of lead for retractable pencil damping pot rubber bearing described in claim 1
(9) deformation in circumferential deformation space (81) provides damping for support and makees in the case where earthquake splits off shear-pin (5)
With achieving the purpose that vibration damping.
9. damping method according to claim 8, it is characterised in that under support normal work or E1 seismic condition, pass through
The clipping power of shear-pin (5) and the yield force of lead for retractable pencil damper bar (9) keep the stabilization of support, under E2 seismic condition, shear-pin
(5) it is split off by beam body horizontal inertial force, the yield force of lead for retractable pencil damper bar (9) is not enough to maintain the stabilization of support, upper bracket plate (4)
Opposite sliding occurs with piston (3), drives lead for retractable pencil damper bar (9) that elastic-plastic deformation occurs in circumferential deformation space (81), leads to
It crosses the deformation of lead for retractable pencil damper bar (9) and provides certain resistance for the opposite sliding of upper bracket plate (4) and piston (3), and consume ground
Energy is shaken, achievees the purpose that damping.
10. damping method according to claim 9, it is characterised in that the circumferential deformation space (81) must meet lead for retractable pencil
The width of deformation space demand of the damper bar (9) under support maximum horizontal displacement, the earthquake displacement slot (6) must meet lead
The quantity of the horizontal displacement demand of core damper bar (9) generation elastic-plastic deformation, the lead for retractable pencil damper bar (9) and shear-pin (5),
Size and distribution situation are designed all in accordance with the actual needs of bridge where support, wherein the upper end card of lead for retractable pencil damper bar (9)
Tightly in the upper blind hole (82) in upper bracket plate (4), lower end is clamped in the lower blind hole (84) in piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159678.3A CN107217586B (en) | 2016-03-21 | 2016-03-21 | Lead for retractable pencil damps pot rubber bearing and its damping method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159678.3A CN107217586B (en) | 2016-03-21 | 2016-03-21 | Lead for retractable pencil damps pot rubber bearing and its damping method |
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| Publication Number | Publication Date |
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| CN107217586A CN107217586A (en) | 2017-09-29 |
| CN107217586B true CN107217586B (en) | 2019-02-15 |
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| CN107881906B (en) * | 2017-12-14 | 2023-07-18 | 西南交通大学 | Bridge anti-seismic steel support |
| CN109024253A (en) * | 2018-06-28 | 2018-12-18 | 广西驰胜农业科技有限公司 | A kind of bridge girder anti-seismic bearing |
| CN109024252B (en) * | 2018-06-28 | 2021-04-06 | 台州中知英健机械自动化有限公司 | Bridge anti-seismic support |
| CN110820548A (en) * | 2019-11-30 | 2020-02-21 | 常熟市宝德桥梁构件有限公司 | Basin type rubber support with excellent anti-seismic effect |
| CN112962436B (en) * | 2021-02-04 | 2023-01-24 | 南昌航空大学 | Continuous beam side span support |
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| CN2693818Y (en) * | 2004-04-29 | 2005-04-20 | 同济大学 | Spherical steel bearing with lead core damping |
| JP2007113696A (en) * | 2005-10-20 | 2007-05-10 | Toyo Tire & Rubber Co Ltd | Laminated rubber support device |
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| KR100994370B1 (en) * | 2010-03-12 | 2010-11-16 | 주식회사 부흥시스템 | Lead rubber bearing and manufacture method thereof |
| CN102251472B (en) * | 2011-05-03 | 2014-02-12 | 东南大学 | Multi-dimensional shock absorption/isolation lead rubber bearing |
| CN202969261U (en) * | 2012-11-22 | 2013-06-05 | 衡水中铁建工程橡胶有限责任公司 | Elastic buffering basin type rubber supporting seat for highway bridge |
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