CN107217586A - 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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- CN107217586A CN107217586A CN201610159678.3A CN201610159678A CN107217586A CN 107217586 A CN107217586 A CN 107217586A CN 201610159678 A CN201610159678 A CN 201610159678A CN 107217586 A CN107217586 A CN 107217586A
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- retractable pencil
- upper bracket
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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
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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
- E01D19/041—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 laterally set, it is arranged at the rubber blanket in bottom basin, the piston for being placed on rubber blanket and being stretched out from bottom basin and the upper bracket plate being placed on piston, piston is the U shape of upward opening, in the upward opening of upper bracket plate insertion piston, and stretched out from piston, upper bracket plate is fixed with piston by the shear-pin of vertical setting, upper bracket plate forms the earthquake displacement groove of circle with piston medial surface interval, anchor ring rubber is clamped between the madial wall and piston of bottom basin, provided with reserved cavity between upper bracket plate and piston, there is the lead for retractable pencil damper bar of vertical setting in reserved cavity, in the upper end insertion upper bracket plate of lead for retractable pencil damper bar, in lower end insertion piston, circumferential deformation space is formed between middle part and the side wall of reserved cavity.The bearing that the present invention is provided, damping element is arranged inside bearing, and bearing damping vibration attenuation energy consumption effect is good and compact conformation.The present invention also provides the damping method that lead for retractable pencil damps 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 method, by setting damper bar in the internal structure of inner seat, strengthen the horizontal damping characteristic of bearing, reach the purpose of vibration damping, belong to science of bridge building antivibration area.
Background technology
In existing pot bearing, common pot bearing vertical load is born using the rubber blanket being positioned in bottom basin and is applicable during bridge use needed for corner requirement, and generally used General Purpose Rubber, its damping is very low.For slidable pot bearing, fixed between piston and upper bracket plate with shear-pin, increase the horizontal rigidity of bearing, used or E1 earthquakes normal（Common earthquake）In the case of, the Stability Analysis of Structures of bearing is kept by the shearing force of shear-pin.When running into E2 earthquakes（Rarely occurred earthquake）In the case of, the horizontal inertial force of beam body makes the shearing force of shear-pin split off power more than it, shear-pin is split off, then by the sliding friction pair between upper bracket and piston come earthquake energy, sliding friction pair is typically made up of tetrafluoroethene plate and stainless steel plate, its coefficient of friction is relatively low, and energy dissipating is limited, and the effectiveness in vibration suppression of bearing is general.To widen the use scope of pot bearing, increase energy dissipation capacity, it have devised parallel energy-dissipating type pot bearing, the structure of the bearing is to be distributed steel damping element in pot bearing surrounding, and extra damping, such as Application No. 201410375820.9 are provided for bearing by steel damping element, the Chinese invention patent of entitled " a kind of steel damping slide board rubber support and its damping method ", extra lateral rigidity is provided for bearing by additional lateral damping element and longitudinal damping element.But one outstanding problem of this class formation is exactly, because steel damping element is distributed in pot bearing surrounding, this dramatically increases the planar dimension of bearing upper and lower bottom plate, it is unfavorable for miniaturization, and the increase inevitable requirement bent cap size of its planar dimension is adapted to therewith, then need to increase bent cap size, the installation for being directed at bearing is high to the complement of bent cap and pier stud, influences the popularization of bearing practical.
The content of the invention
Lead for retractable pencil that the present invention is provided damping pot rubber bearing, is improved by the structure to pot rubber bearing in the prior art, damping element is arranged inside bearing, and bearing damping vibration attenuation energy consumption effect is good and compact conformation.The present invention also provides the damping method that lead for retractable pencil damps pot rubber bearing.
To reach that above-mentioned purpose the technical solution adopted by the present invention is：Lead for retractable pencil damps pot rubber bearing, including the bottom basin laterally set, it is arranged at the rubber blanket in bottom basin, the piston for being placed on rubber blanket and being stretched out from bottom basin and the upper bracket plate being placed on piston, piston is the U shape of upward opening, in the upward opening of upper bracket plate insertion piston, and stretched out from piston, upper bracket plate is fixed with piston by the shear-pin of vertical setting, upper bracket plate forms the earthquake displacement groove of circle with piston medial surface interval, anchor ring rubber is clamped between the madial wall and piston of bottom basin, it is characterized in that provided with reserved cavity between described upper bracket plate and piston, there is the lead for retractable pencil damper bar of vertical setting in described reserved cavity, in the upper end insertion upper bracket plate of described lead for retractable pencil damper bar, in lower end insertion piston, circumferential deformation space is formed between middle part and the side wall of reserved cavity.
Above-described lead for retractable pencil damps pot rubber bearing, under normal work or E1 seismic conditions, the stabilization of bearing is kept by the clipping power of shear-pin and the yield force of lead for retractable pencil damper bar, under E2 seismic conditions, shear-pin is split off by beam body horizontal inertial force, the yield force of lead for retractable pencil damper bar is not enough to maintain the stabilization of bearing, with piston relative slide occurs for upper bracket plate, lead for retractable pencil damper bar is driven to occur elastic-plastic deformation in circumferential deformation space, by the deformation of lead for retractable pencil damper bar certain resistance is provided for the relative slip of upper bracket plate and piston, and earthquake energy, reach the purpose of damping.Wherein, reserved cavity is set between upper bracket plate and piston, the lead for retractable pencil damper bar with damping characteristic is arranged inside bearing, the planar dimension of upper bracket and piston is not increased, the structure of bearing is compacter, low to the complement of bent cap and pier stud, more conducively promotes practical.And deformed at ambient temperature using lead, Dynamic- Recovery and Dynamic Recrystallization will occur simultaneously, pass through recovery and recrystallization process, strain hardening will disappear, the characteristics of tissue and performance of lead will then revert to the state before deformation, lead for retractable pencil damper bar deforms earthquake energy, and will not produce in deformation cycle accumulated fatigue, and lead for retractable pencil damper bar is longer than the service life of steel damping element of the prior art.
It is preferred that, a diameter of D1 of lead for retractable pencil damper bar, earthquake displacement well width is D2, a diameter of D3, D1+2D2≤D3 in circumferential deformation space.The width D 2 of earthquake Bit Shift groove is the maximum horizontal displacement of bearing when occurring E2 earthquakes.
It is preferred that, the center line of described shear-pin along upper bracket plate and piston interface is spaced apart side by side, and described reserved cavity is distributed in the outside of shear-pin.
It is preferred that, described reserved cavity is distributed or rectangular array distribution for circular array.
It is preferred that, described upper bracket plate base diameter is D4, and the internal diameter of piston is D5, D5 ≈ 1.05 ×（D4+D2).
It is preferred that, described reserved cavity is connected with the lower blind hole being opened in piston and constituted by the upper blind hole that is opened in upper bracket plate, central cavity from top to bottom, the diameter of described upper blind hole and the diameter of lower blind hole are equal to the diameter of lead for retractable pencil damper bar, in the upper blind hole of upper end insertion of lead for retractable pencil damper bar, in the lower blind hole of lower end insertion, form circumferential deformation space between middle part and the side wall of central cavity, it is 1/5th of lead for retractable pencil damper bar length 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,.
It is preferred that, described upper bracket plate bottom surface sets polyfluortetraethylene plate, and stainless steel plate is set on the face that piston is contacted with upper bracket plate bottom surface.
The damping method of pot rubber bearing is damped using above-mentioned lead for retractable pencil, reserved cavity is opened up between described upper bracket plate and piston, vertical lead for retractable pencil damper bar is set in described reserved cavity, in the upper end insertion upper bracket plate of described lead for retractable pencil damper bar, in lower end insertion piston, circumferential deformation space is formed between middle part and the side wall of reserved cavity, pass through deformation of the described lead for retractable pencil damper bar in circumferential deformation space, in the case where earthquake splits off shear-pin, damping action is provided for bearing, the purpose of vibration damping is reached.
It is preferred that, under bearing normal work or E1 seismic conditions, the stabilization of bearing is kept by the clipping power of shear-pin and the yield force of lead for retractable pencil damper bar, under E2 seismic conditions, shear-pin is split off by beam body horizontal inertial force, the yield force of lead for retractable pencil damper bar is not enough to maintain the stabilization of bearing, with piston relative slide occurs for upper bracket plate, lead for retractable pencil damper bar is driven to occur elastic-plastic deformation in circumferential deformation space, by the deformation of lead for retractable pencil damper bar certain resistance is provided for the relative slip of upper bracket plate and piston, and earthquake energy, reach the purpose of damping.
It is preferred that, described circumferential deformation space must meet deformation space demand of the lead for retractable pencil damper bar under bearing maximum horizontal displacement, the width of described earthquake displacement groove must meet the horizontal displacement demand that elastic-plastic deformation occurs for lead for retractable pencil damper bar, described lead for retractable pencil damper bar and quantity, size and the distribution situation of shear-pin is designed all in accordance with being actually needed for bridge where bearing, the upper end of wherein 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.
Beneficial effects of the present invention are：
1st, the damping capacity of lead for retractable pencil damper bar is good, and fatigue behaviour is high, and bearing damping vibration attenuation energy consumption effect is good.
2nd, lead for retractable pencil damper bar is arranged on inside bearing, makes seat structure more compact, and installation need not increase bent cap size.
3rd, it is simple in construction, it is easy to assembly, being actually needed according to bridge where bearing, the quantity of design lead for retractable pencil damper bar.
4th, upper bracket, piston and bottom basin are sequentially inserted into formula displacement structure, can realize girder falling function in E2 earthquakes.
Brief description of the drawings
Fig. 1 damps the sectional view of pot rubber bearing for the lead for retractable pencil in embodiment.
Fig. 2 is Fig. 1 partial enlarged drawing.
Fig. 3 is structural representation when lead for retractable pencil damper bar is not provided between upper bracket plate and piston.
Fig. 4 for Fig. 3 A-A to sectional view.
Fig. 5 damps sectional view during pot rubber bearing maximum horizontal displacement for the lead for retractable pencil in embodiment.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, lead for retractable pencil damps pot rubber bearing, including the bottom basin 1 laterally set, it is arranged at the rubber blanket 2 in bottom basin 1, the piston 3 for being placed on rubber blanket 2 and being stretched out from bottom basin 1 and the upper bracket plate 4 being placed on piston 3, piston 3 is the U shape of upward opening, in the upward opening of the insertion piston 3 of upper bracket plate 4, and stretched out from piston 3, upper bracket plate 4 is fixed with piston 3 by the shear-pin 5 of vertical setting, upper bracket plate 4 forms the earthquake displacement groove 6 of circle with the medial surface interval of piston 3, anchor ring rubber 7 is clamped between the madial wall and piston 3 of bottom basin 1, provided with reserved cavity 8 between described upper bracket plate 4 and piston 3, there is the lead for retractable pencil damper bar 9 of vertical setting in described reserved cavity 8, in the upper end insertion upper bracket plate 4 of described lead for retractable pencil damper bar 9, in lower end insertion piston 3, 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, the angle turning function of bearing is realized in the inhomogeneous deformation of rubber blanket 2 in bottom basin 1 under the effect of piston 3, upper bracket 4, piston 3 and bottom basin 1 are sequentially inserted into formula displacement structure, can realize girder falling function in E2 earthquakes.Under normal work or E1 seismic conditions, the stabilization of bearing is kept by the clipping power 5 of shear-pin and the yield force of lead for retractable pencil damper bar 9, under E2 seismic conditions, shear-pin 5 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 bearing, with piston 3 relative slip occurs for upper bracket plate 4, lead for retractable pencil damper bar 9 is driven to occur elastic-plastic deformation in circumferential deformation space, by the deformation of lead for retractable pencil damper bar 9 certain resistance is provided for the relative slip of upper bracket plate 4 and piston 3, and earthquake energy, reach the purpose of damping.Reserved cavity 8 is set between upper bracket plate 4 and piston 3, the lead for retractable pencil damper bar 9 with damping characteristic is arranged inside bearing, do not increase the planar dimension of upper bracket 4 and piston 3, the structure of bearing is compacter, it is low to the complement of bent cap and pier stud, more conducively promote practical.And deformed at ambient temperature using lead, Dynamic- Recovery and Dynamic Recrystallization will occur simultaneously, pass through recovery and recrystallization process, strain hardening will disappear, the characteristics of tissue and performance of lead will then revert to the state before deformation, lead for retractable pencil damper bar 9 deforms earthquake energy, and will not produce in deformation cycle accumulated fatigue, and lead for retractable pencil damper bar 9 is longer than the service life of steel damping element of the prior art.
Wherein, the requirement of circumferential deformation space 81 can meet deformation space demand of the lead for retractable pencil damper bar 9 under bearing maximum horizontal displacement, the too small lead for retractable pencil damper bar 9 that is unfavorable in circumferential deformation space 81 occurs bending and deformation, or even can only occur detrusion, 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 bearing maximum horizontal displacement, a diameter of D1 of lead for retractable pencil damper bar 9, the width of earthquake displacement groove 6 is D2, a diameter of D3, D1+2D2≤D3 in circumferential deformation space 81.Wherein the width D 2 of earthquake Bit Shift groove is the maximum horizontal displacement of bearing when occurring E2 earthquakes.As shown in figure 5, when bearing produces maximum horizontal displacement, circumferential deformation space 81 has enough spaces to meet the deformation space demand of lead for retractable pencil damper bar 9, lead for retractable pencil damper bar 9 is given full play to damping characteristic, efficient earthquake energy.
In concrete structure, it can be seen from figure 4 that described shear-pin 5 is spaced apart side by side along upper bracket plate 4 and the center line of the contact surface of piston 3, described reserved cavity 8 is distributed in the outside of shear-pin 5.Described reserved cavity 8 is distributed for circular array.For convenient formation, reserved cavity 8 is arranged on to the outside of shear-pin 5, to make the horizontal rigidity of bearing be more evenly distributed, reserved cavity 8 is designed to circular array distribution or rectangular array distribution, make bearing when bearing horizontal force, upper bracket plate 4 is consistent with rigidity on the contact surface of piston 3, during being more favorably used in the deformation of lead for retractable pencil damper bar 9, keeps the stabilization of the structure of bearing.In practice, quantity, size and the distributing position of reserved cavity 8 are adjusted according to the actual bearer situation of bearing place bridge.
In concrete structure, the described base diameter of upper bracket plate 4 is D4, and the internal diameter of piston 3 is D5, D5 ≈ 1.05 ×（D4+D2）.In E2 earthquakes, shear-pin 5 is broken off, upper bracket plate 4 must be slided on piston 3, just lead for retractable pencil damper bar 9 can be made to deform, and displacement of the upper bracket plate 4 relative to piston 3 must meet the horizontal displacement demand that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9, therefore the internal diameter of piston 3 will be determined according to the diameter of the bottom of upper bracket plate 4 and the maximum horizontal displacement of bearing, after shear-pin 5 fractures, upper bracket plate 4 relative to the maximum displacement that piston 3 is slided, i.e. earthquake displacement groove 3 width D 2, D5 ≈ 1.05 ×（D4+D2）, displacement of the upper bracket plate 4 relative to piston 3 is fully met the displacement demand that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9.From figure 5 it can be seen that when upper bracket plate 4 is contacted with the madial wall of piston 3, upper bracket plate 4 slides into maximum displacement relative to piston 3, now, and elastic-plastic deformation has occurred for lead for retractable pencil damper bar 9, and seismic energy is largely consumed.
In concrete structure, lead for retractable pencil damper bar 9 is positioned between upper bracket plate 4 and piston 3 for convenience, the upper blind hole 82 of described reserved cavity 8 from top to bottom by being opened in upper bracket plate 4, central cavity 83 connects composition with the lower blind hole 84 being opened in piston 3, the diameter of described upper blind hole 82 and the diameter of lower blind hole 84 are equal to the diameter of lead for retractable pencil damper bar 9, in the upper blind hole 82 of upper end insertion of lead for retractable pencil damper bar 9, in the lower blind hole 84 of lower end insertion, circumferential deformation space 81 is formed between middle part and the side wall of central cavity 83, it is 1/5th of the length of lead for retractable pencil damper bar 9 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,.The length that lead for retractable pencil damper bar 9 is inserted between blind hole 82 and lower blind hole 84 is 1/5th of its length, it can ensure that the two ends of lead for retractable pencil damper bar 9 are firmly positioned, lead for retractable pencil damper bar 9 is caused to have enough length to be used for elastic-plastic deformation again, earthquake energy, makes the damping of lead for retractable pencil damper bar 9 reach most preferably.
The described bottom surface of upper bracket plate 4 sets polyfluortetraethylene plate, and stainless steel plate is set on the face that piston 3 is contacted with the bottom surface of upper bracket plate 4.A pair are set between lower support plate 4 and piston 3 by polyfluortetraethylene plate and the friction pair of stainless steel plate component, part energy can be consumed in the slip relative relative to piston 3 of lower seat board 4, during increase E2 earthquakes, the passive energy dissipation effect of bearing.The setting of polyfluortetraethylene plate and the friction pair of stainless steel plate component, the appropriate size and quantity for reducing lead for retractable pencil damper bar 9, to reduce the cost of manufacture of bearing can also be passed through simultaneously.
The damping method of pot rubber bearing is damped using above-described lead for retractable pencil, reserved cavity 8 is opened up between described upper bracket plate 4 and piston 3, vertical lead for retractable pencil damper bar 9 is set in described reserved cavity 8, in the upper end insertion upper bracket plate 4 of described lead for retractable pencil damper bar 9, in lower end insertion piston 3, circumferential deformation space 81 is formed between middle part and the side wall of reserved cavity 8, pass through deformation of the described lead for retractable pencil damper bar 9 in circumferential deformation space 81, in the case where earthquake splits off shear-pin 5, damping action is provided for bearing, the purpose of vibration damping is reached.
Specifically, under bearing normal work or E1 seismic conditions, the stabilization of bearing is kept by the clipping power of shear-pin 5 and the yield force of lead for retractable pencil damper bar 9, under E2 seismic conditions, shear-pin 5 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 bearing, with piston 3 relative slip occurs for upper bracket plate 2, lead for retractable pencil damper bar 9 is driven to occur elastic-plastic deformation in circumferential deformation space 81, by the deformation of lead for retractable pencil damper bar 9 certain resistance is provided for the relative slip of upper bracket plate 2 and piston 3, and earthquake energy, reach the purpose of damping.
Specifically, described circumferential deformation space 81 must meet deformation space demand of the lead for retractable pencil damper bar 9 under bearing maximum horizontal displacement, the width of described earthquake displacement groove 6 must meet the horizontal displacement demand that elastic-plastic deformation occurs for lead for retractable pencil damper bar 9, described lead for retractable pencil damper bar 9 and quantity, size and the distribution situation of shear-pin 5 is designed all in accordance with being actually needed for bridge where bearing, the upper end of wherein 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 in the lower blind hole 84 in piston 3.
The advantage of the invention is that：The damping capacity of lead for retractable pencil damper bar is good, and fatigue behaviour is high, and bearing damping vibration attenuation energy consumption effect is good.Lead for retractable pencil damper bar is arranged on inside bearing, makes seat structure more compact, and installation need not increase bent cap size.It is simple in construction, it is easy to assembly, being actually needed according to bridge where bearing, the quantity of design lead for retractable pencil damper bar.Upper bracket, piston and bottom basin are sequentially inserted into formula displacement structure, can realize girder falling function in E2 earthquakes.
Completely description is carried out to the technical scheme of embodiments of the invention above in association with accompanying drawing, it is necessary to which explanation is that described embodiment is only a part of embodiment of the invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made belongs to the scope of protection of the invention.
Claims (10)
1. lead for retractable pencil damps pot rubber bearing, including the bottom basin laterally set（1）, be arranged at bottom basin（1）In rubber blanket（2）, be placed in rubber blanket（2）It is upper and from bottom basin（1）The piston of middle stretching（3）Be placed in piston（3）On upper bracket plate（4）, piston（3）For the U shape of upward opening, upper bracket plate（4）Insert piston（3）Upward opening in, and from piston（3）It is middle to stretch out, upper bracket plate（4）With piston（3）Pass through the shear-pin of vertical setting（5）It is fixed, upper bracket plate（4）With piston（3）Medial surface interval forms the earthquake displacement groove of circle（6）, bottom basin（1）Madial wall and piston（3）Between clamp anchor ring rubber（7）, it is characterised in that described upper bracket plate（4）With piston（3）Between provided with reserved cavity（8）, described reserved cavity（8）In have vertical setting lead for retractable pencil damper bar（9）, described lead for retractable pencil damper bar（9）Upper end insertion upper bracket plate（4）In, lower end insertion piston（3）In, middle part and reserved cavity（8）Side wall between form circumferential deformation space（81）.
2. lead for retractable pencil according to claim 1 damps pot rubber bearing, it is characterised in that lead for retractable pencil damper bar（9）A diameter of D1, earthquake displacement groove（6）Width is D2, circumferential deformation space（81）A diameter of D3, D1+2D2≤D3.
3. lead for retractable pencil according to claim 2 damps pot rubber bearing, it is characterised in that described shear-pin（5）Along upper bracket plate（4）With piston（3）The center line of contact surface is spaced apart side by side, described reserved cavity（8）It is distributed in shear-pin（5）Outside.
4. lead for retractable pencil according to claim 3 damps pot rubber bearing, it is characterised in that described reserved cavity（8）For circular 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）Base diameter is D4, piston（3）Internal diameter be D5, D5 ≈ 1.05 ×（D4+D2).
6. lead for retractable pencil according to claim 5 damps pot rubber bearing, it is characterised in that described reserved cavity（8）From top to bottom by being opened in upper bracket plate（4）In upper blind hole（82）, central cavity（83）Be opened in piston（3）In lower blind hole（84）Connection composition, described upper blind hole（82）Diameter and lower blind hole（84）Diameter be equal to lead for retractable pencil damper bar（9）Diameter, lead for retractable pencil damper bar（9）The upper blind hole of upper end insertion（82）In, the lower blind hole of lower end insertion（84）In, middle part and central cavity（83）Side wall between form circumferential deformation space（81）, lead for retractable pencil damper bar（9）It is inserted into blind hole（82）Length and be inserted into lower blind hole（84）Length be lead for retractable pencil damper bar（9）/ 5th of 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 sets polyfluortetraethylene plate, in piston（3）With upper bracket plate（4）Stainless steel plate is set on the face of bottom surface contact.
8. the damping method of pot rubber bearing is damped using the lead for retractable pencil described in claim 1, in described upper bracket plate（4）With piston（3）Between open up reserved cavity（8）, in described reserved cavity（8）It is middle that vertical lead for retractable pencil damper bar is set（9）, described lead for retractable pencil damper bar（9）Upper end insertion upper bracket plate（4）In, lower end insertion piston（3）In, middle part and reserved cavity（8）Side wall between form circumferential deformation space（81）, pass through described lead for retractable pencil damper bar（9）In circumferential deformation space（81）In deformation, make shear-pin in earthquake（5）In the case of splitting off, damping action is provided for bearing, the purpose of vibration damping is reached.
9. damping method according to claim 8, it is characterised in that under bearing normal work or E1 seismic conditions, pass through shear-pin（5）Clipping power and lead for retractable pencil damper bar（9）Yield force keep bearing stabilization, under E2 seismic conditions, shear-pin（5）Split off by beam body horizontal inertial force, lead for retractable pencil damper bar（9）Yield force be not enough to maintain bearing stabilization, upper bracket plate（2）With piston（3）Occur relative slip, drive lead for retractable pencil damper bar（9）In circumferential deformation space（81）Middle generation elastic-plastic deformation, passes through lead for retractable pencil damper bar（9）Deformation be upper bracket plate（2）With piston（3）Relative slip certain resistance, and earthquake energy are provided, reach the purpose of damping.
10. damping method according to claim 9, it is characterised in that described circumferential deformation space（81）Lead for retractable pencil damper bar must be met（9）Deformation space demand under bearing maximum horizontal displacement, described earthquake displacement groove（6）Width must meet lead for retractable pencil damper bar（9）Occur the horizontal displacement demand of elastic-plastic deformation, described lead for retractable pencil damper bar（9）And shear-pin（5）Quantity, size and distribution situation be designed all in accordance with being actually needed for bridge where bearing, wherein lead for retractable pencil damper bar（9）Upper end be clamped on upper bracket plate（4）In upper blind hole（82）In, lower end is clamped on piston（3）In lower blind hole（84）In.
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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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| 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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| CN107217586A true CN107217586A (en) | 2017-09-29 |
| CN107217586B CN107217586B (en) | 2019-02-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107881906A (en) * | 2017-12-14 | 2018-04-06 | 西南交通大学 | A kind of bridge earthquake resistance bridle iron |
| 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 |
| CN109024252A (en) * | 2018-06-28 | 2018-12-18 | 广西驰胜农业科技有限公司 | A kind of bridge earthquake resistance bridle iron |
| 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 |
| CN112962436A (en) * | 2021-02-04 | 2021-06-15 | 南昌航空大学 | Continuous beam side span support |
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| CN102021881B (en) * | 2009-09-23 | 2012-07-04 | 上海市城市建设设计研究院 | Double-guide rail anti-seismic damping bidirectional ball steel support |
| KR100994370B1 (en) * | 2010-03-12 | 2010-11-16 | 주식회사 부흥시스템 | Lead rubber bearing and manufacture method thereof |
| CN102251472A (en) * | 2011-05-03 | 2011-11-23 | 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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| CN107881906A (en) * | 2017-12-14 | 2018-04-06 | 西南交通大学 | A kind of bridge earthquake resistance bridle iron |
| 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 |
| CN109024252A (en) * | 2018-06-28 | 2018-12-18 | 广西驰胜农业科技有限公司 | A kind of bridge earthquake resistance bridle iron |
| 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 |
| CN112962436A (en) * | 2021-02-04 | 2021-06-15 | 南昌航空大学 | Continuous beam side span support |
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