CN106758792A - A kind of bridge pad - Google Patents
A kind of bridge pad Download PDFInfo
- Publication number
- CN106758792A CN106758792A CN201611219650.0A CN201611219650A CN106758792A CN 106758792 A CN106758792 A CN 106758792A CN 201611219650 A CN201611219650 A CN 201611219650A CN 106758792 A CN106758792 A CN 106758792A
- Authority
- CN
- China
- Prior art keywords
- liner plate
- plate
- spherical crown
- crown liner
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- E01D19/043—Roller 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
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of bridge pad, belong to bridge construction technical field, including upper bracket plate and lower support plate, the upper bracket plate slidably connects middle liner plate, middle liner plate is located at the lower section of upper bracket plate, the middle liner plate is slidably connected by spherical crown liner plate with lower support plate, the top of the spherical crown liner plate is connected by the first fender pile with middle liner plate, the top of the spherical crown liner plate is located in the upper spherically mounted hole of middle liner plate bottom, and the bottom of the spherical crown liner plate is located in the lower peripheral surface mounting hole on lower support plate top.The present invention have bigger corner and turning power, the outer active force that bridge bears can be offset, can avoid due to bearing corner limitation cause it is direct by active force be transferred to bridge beam body in itself, cause beam body unrepairable damage problem advantage.
Description
Technical field
The present invention relates to a kind of bridge pad, belong to bridge construction technical field, more particularly to a kind of bridge ball-type branch
Seat.
Background technology
Bridge needs to use bearing in structure design as the support section of bridge span structure, for offsetting what bridge bore
Applied external force, such as to the pressure of bridge when the vehicular traffic in both sides track is travelled on bridge.By taking spherical bearing as an example, when
When having vehicle to pass through bridge, spherical bearing meets bridge by the slip of plane stainless steel plate and plane polyfluortetraethylene plate
Horizontal displacement requirement, the rotation of bridge is met by the slip of curved surface polyfluortetraethylene plate and curved surface stainless steel plate, normal
In the case of, bearing can meet the demand of actual condition.But, when the side for having heavy-duty vehicle to concentrate on bridge travels, with
Vehicle is as a example by the right travel of bridge, and now the right side of bearing is subject to the downward pressure of vehicle vertical, vertical on the right side of bearing
There is the trend for moving up in the presence of power, on the left of bearing, but by the barrier effect of plane stainless steel plate, a left side for bearing
Side cannot move up, and be that the spherical crown liner plate of bearing cannot be moved on vertical so as to what is caused, can only be carried out in lower section curved surface
The rotation of small range, also just says that the corner of bearing is restricted, and resulting negative consequence is, in the short time that vehicle passes through
Interior, bearing has little time to offset the active force of vehicle, so that most of active force is transferred directly to bridge beam body, or even in side
Under the great operating mode of pressure of vehicle（For example when there is overloaded vehicle）, it may appear that bearing failure, liner plate it is stuck can not rotate, cannot
Situation of the vehicle to bridge beam body active force is offset, most vehicle active force is transferred to beam body in itself at last, and bridge is caused can not
The damage of reparation.Additionally, China is the country of earthquake more than, the anti-seismic performance of existing spherical bearing is difficult to meet resistance violent earthquake
Requirement.
The content of the invention
It is technical deficiency more than solving, the invention provides a kind of bridge pad, with bigger corner and rotation
Ability, can offset the outer active force that bridge bears, and can avoid direct being transmitted active force due to what the limitation of bearing corner was caused
To bridge beam body in itself, cause beam body unrepairable damage problem.
Technical scheme is as follows：A kind of bridge pad, including upper bracket plate and lower support plate, the upper bracket plate
Middle liner plate is slidably connected, middle liner plate is located at the lower section of upper bracket plate, and the middle liner plate passes through spherical crown liner plate and lower branch
Seat board is slidably connected, and the top of the spherical crown liner plate is connected by the first fender pile with centre liner plate, the spherical crown liner plate it is upper
Portion is located in the upper spherically mounted hole of middle liner plate bottom, and the bottom of the spherical crown liner plate is located at the lower peripheral surface on lower support plate top
In mounting hole.
Technical scheme also includes：The upper surface of the lower support plate is provided with locating ring, the spherical crown liner plate
Set fluted on the part of lower peripheral surface mounting hole, one end of the locating ring is located in the groove.
Technical scheme also includes：The upper surface of horizontal plane and lower support plate where the center circle of the groove
Concordantly, the depth of the groove is more than or equal to 10mm, and the width of the groove is 30~50mm.
Technical scheme also includes：The length that the locating ring is located at the groove is more than or equal to 10mm, positioning
The thickness of ring is 10~15mm.
Technical scheme also includes：The spherical crown liner plate include upper spherical crown liner plate and lower spherical crown liner plate, it is described on
Spherical crown liner plate is located in upper spherically mounted hole, and lower spherical crown liner plate is located in lower peripheral surface mounting hole, and the lower spherical crown liner plate is by the
Two fender piles are connected with upper spherical crown liner plate.
Technical scheme also includes：The upper spherical crown liner plate uses sawtooth knot with the faying face of lower spherical crown liner plate
Structure.
Technical scheme also includes：The a height of 2mm of tooth of the broached-tooth design, the facewidth of the broached-tooth design is
4mm。
Technical scheme also includes：Sphere polyfluortetraethylene plate, institute are provided with the upper spherically mounted hole
State and lower peripheral surface polyfluortetraethylene plate is provided with lower peripheral surface mounting hole.
Technical scheme also includes：The upper surface of the middle liner plate is provided with raceway, the raceway and installs
There is spin.
Technical scheme also includes：The depth of the raceway is 2mm, and the width of raceway is 2.5~8mm, described
The diameter of spin is 5~10mm.
The beneficial effects of the invention are as follows：Liner plate in the middle of by designing, is slided using the upper surface and upper bracket plate of middle liner plate
Dynamic connection, meets horizontal displacement requirement during bearing normal work, on the bottom of middle liner plate is set spherically mounted hole, under
The top of support plate sets lower peripheral surface mounting hole, and a spherical crown liner plate is installed using upper and lower spherically mounted hole, and the spherical crown liner plate can
Rotating requires when meeting bearing normal work, i.e. the first fender pile are integral by middle liner plate and spherical crown liner plate connection, pass through
The rotation of bearing is realized in slip of the bottom of spherical crown liner plate in the lower peripheral surface mounting hole of lower support plate, also, when bridge side
When stress is excessive, the first fender pile is cut under external force, and now, spherical crown liner plate can be slided with middle liner plate, i.e.,
The rotation of full angle is carried out in the complete sphere that spherical crown liner plate can be formed in upper and lower spherically mounted hole, bigger turning is provided with
Angle and turning power, meet the requirement of bridge big corner, can utilize rotation of the spherical crown liner plate in upper and lower spherically mounted hole
Directly offset the external force born of bridge, it is to avoid direct active force is transferred to bridge beam body sheet due to what the limitation of bearing corner was caused
Body, the problem for causing the damage of beam body unrepairable.
Brief description of the drawings
Fig. 1 is schematic front view of the invention.
Fig. 2 is the raceway schematic diagram of liner plate in the middle of the present invention.
1st, upper bracket plate, the 2, first fender pile, 3, spin, 4, upper sphere polyfluortetraethylene plate, 5, middle liner plate, 51, rolling
Road, 6, upper spherical crown liner plate, the 7, second fender pile, 8, locating ring, 9, rubber dust-proof ring, 10, lower spherical crown liner plate, 11, lower peripheral surface gathers
Tetrafluoroethene plate, 12, lower support plate.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
As depicted in figs. 1 and 2, bridge pad of the invention, is designed mainly for following two aspects：First it is design
Spherical bearing with more big corner and turning power, can offset the outer active force that bridge bears, to avoid due to bearing corner
Limitation cause it is direct by active force be transferred to bridge beam body in itself, cause beam body unrepairable damage problem；Next to that setting
Meter has more preferable cushioning ability, can resist the spherical bearing of violent earthquake, using two fender piles, can consume substantial amounts ofly
Shake can, make as far as possible few energy transmission to beam body in itself, it is to avoid violent earthquake to beam body cause damage.
Bridge pad of the invention, including upper bracket plate 1 and lower support plate 12, wherein, during upper bracket plate 1 is slidably connected
Between liner plate 5, the middle liner plate 5 be located at upper bracket plate 1 lower section, specifically, the upper surface of middle liner plate 5 is provided with raceway
51, spin 3 is installed in the raceway 51, using liner plate 5 in the middle of the scrolling realization of spin 3 and the relative slip of upper bracket plate 1, expire
Horizontal displacement requirement during football-shape bearing normal work.
In embodiments of the invention, into 2mm, the width design of raceway 51 is 2.5~8mm, rolling to the depth design of raceway 51
The diameter design of ball 3 can meet the design requirement of most bridges into 5~10mm, applied widely.Specifically, spin 3 is straight
Footpath can select 5mm, 7mm, 10mm, and the value for corresponding to the width of raceway 51 can select 2.5mm, 4.5mm, 8mm, now comprehensive effect
Fruit is preferably.
Middle liner plate 5 is slidably connected by spherical crown liner plate with lower support plate 12, wherein, the top of spherical crown liner plate passes through first
Fender pile 2 is connected with middle liner plate 5, and the top of spherical crown liner plate is located in the upper spherically mounted hole of the middle bottom of liner plate 5, spherical crown lining
The bottom of plate is located in the lower peripheral surface mounting hole on the top of lower support plate 12.In spherical bearing normal work, middle liner plate 5 and ball
Hat liner plate connects integral by the first fender pile 2, is installed in the lower peripheral surface of lower support plate 12 by the bottom of spherical crown liner plate
The rotation of bearing is realized in slip in hole, meets the requirement of bridge corner under normal circumstances.There is bridge side stress mistake
When big, the first fender pile 2 is cut under external force, and now, spherical crown liner plate can be slided with middle liner plate 5, i.e. spherical crown
The rotation of full angle is carried out in the complete sphere that liner plate can be formed in the upper and lower spherically mounted hole, be provided with bigger corner and
Turning power, meets the requirement of bridge big corner, can be direct using rotation of the spherical crown liner plate in upper and lower spherically mounted hole
Offset the external force born of bridge, it is to avoid due to the limitation of bearing corner cause it is direct by active force be transferred to bridge beam body in itself,
The problem for causing beam body unrepairable to damage.
In embodiments of the invention, in order to increase the promptness that the first fender pile 2 is responded under external force, it is fixed to devise
Position ring 8.Specifically, one end of the locating ring 8 is arranged on the upper surface of lower support plate 12, the other end of locating ring 8 is stretched into
In spherical crown liner plate is located at the groove formed on the part of lower peripheral surface mounting hole.When bridge side stress is excessive, locating ring 8 is received
Extruding force is acted on, and its stress side supports the top of fluted roller, so as to play barrier effect to spherical crown liner plate and lower support plate 12,
So that no longer being slided between spherical crown liner plate and lower support plate 12, stop of first fender pile 2 in outer active force and locating ring 8
Cut in time under effect, increased action response, and then neutralization effect of the spherical bearing to external force can be increased.
Specifically, the design structure of groove is：The upper surface of horizontal plane and lower support plate 12 where the center circle of groove
Concordantly, the depth of groove is more than or equal to 10mm, and the width of groove is 30~50mm, recess width can take 30mm, 40mm,
50mm.The design structure of locating ring 8 is：The length that locating ring 8 is located at groove is more than or equal to 10mm, and the thickness of locating ring 8 is 10
~15mm, the thickness of locating ring 8 can take 10mm, 12mm, 15mm, by increasing capacitance it is possible to increase the positioning barrier effect of locating ring 8, improve whole
The external force neutralization effect of individual spherical bearing.
In embodiments of the invention, in order to meet the resistance needs of violent earthquake, spherical crown liner plate is designed to split type
Structure, i.e. spherical crown liner plate are designed to the upper spherical crown liner plate 6 and lower spherical crown liner plate 10 connected by the second fender pile 7, wherein, upper ball
Hat liner plate 6 is located in upper spherically mounted hole, and lower spherical crown liner plate 10 is located in lower peripheral surface mounting hole.Violent earthquake etc. is not affected by bridge
During larger external force, upper spherical crown liner plate 6 and lower spherical crown liner plate 10 are under the connection function of the second fender pile 7 as an entirety with
Between liner plate 5 slide；When there are other bridges such as special violent earthquake by larger external impacts, the significant horizontal power handle of bridge pier
Second fender pile 7 is cut, and part energy need to be consumed when the second fender pile 7 is cut, and is hereafter gone up spherical crown liner plate 6 and is served as a contrast with lower spherical crown
Plate 10 occurs relative slip can continue consumed energy again, play the function of damping, disclosure satisfy that the resistance design of violent earthquake will
Ask.
In order to strengthen the damping effect of spherical bearing, upper spherical crown liner plate 6 is designed to the faying face of lower spherical crown liner plate 10
Using broached-tooth design, substantial amounts of seismic energy can be consumed to mill using laciniation.Specifically, the tooth of broached-tooth design is high sets
2mm is calculated as, the Design of Tooth Width of Right Shaft of broached-tooth design is 4mm.
In order to extend the service life of spherical bearing and the turning power of enhancing bearing, it is provided with upper spherically mounted hole
Upper sphere polyfluortetraethylene plate 4, is provided with lower peripheral surface polyfluortetraethylene plate 11 in lower peripheral surface mounting hole, during work, upper spherical crown
Liner plate 6 is slided by upper sphere polyfluortetraethylene plate 4 with middle liner plate 5, and lower spherical crown liner plate 10 passes through lower peripheral surface polytetrafluoroethylene (PTFE)
Plate 11 is slided with lower support plate 12.
During assembling, upper bracket plate 1 is contacted with middle liner plate 5 by spin 3, by the phase of both scrolling realizations of spin 3
To sliding, sphere polyfluortetraethylene plate 4 is provided between middle liner plate 5 and upper spherical crown liner plate 6, the first fender pile 2 is a part of embedding
Enter the upper spherical crown liner plate 6 of middle liner plate 5, another part insertion, the embedded upper spherical crown liner plate 6, another part of the part of the second fender pile 7
Embedded lower spherical crown liner plate 10, is contacted between upper spherical crown liner plate 6 and lower spherical crown liner plate 10 by broached-tooth design.In lower spherical crown liner plate 10
Groove is provided with, in the overhanging portion of locating ring 8 insertion groove, lower spherical crown liner plate 10 is provided with lower peripheral surface polytetrafluoroethyl-ne with lower support plate 12
Alkene plate 11, rubber dust-proof ring 9 is provided between lower support plate 12 and middle liner plate 5, is risen with the spherical crown liner plate that energy is offset to rotating
To protective action, increase the service life, increase the reliability that bearing is used.
The above, is only presently preferred embodiments of the present invention, and any formal limitation is not done to the present invention, all at this
Any modification, equivalent and improvement etc. are made within the spirit and principle of invention, protection scope of the present invention is should be included in
Within.
Claims (10)
1. a kind of bridge pad, including upper bracket plate（1）And lower support plate（12）, it is characterised in that：The upper bracket plate（1）It is sliding
It is dynamic to be connected with middle liner plate（5）, middle liner plate（5）Positioned at upper bracket plate（1）Lower section, the middle liner plate（5）By spherical crown
Liner plate and lower support plate（12）It is slidably connected, the top of the spherical crown liner plate passes through the first fender pile（2）With middle liner plate（5）Even
Connect, the top of the spherical crown liner plate is located at middle liner plate（5）In the upper spherically mounted hole of bottom, the lower portion of the spherical crown liner plate
In lower support plate（12）In the lower peripheral surface mounting hole on top.
2. a kind of bridge pad as claimed in claim 1, it is characterised in that：The lower support plate（12）Upper surface be provided with
Locating ring（8）, the spherical crown liner plate be located at lower peripheral surface mounting hole part on set fluted, the locating ring（8）One end
In the groove.
3. a kind of bridge pad as claimed in claim 2, it is characterised in that：Horizontal plane where the center circle of the groove with
Lower support plate（12）Upper surface it is concordant, the depth of the groove is more than or equal to 10mm, and the width of the groove is 30~50mm.
4. a kind of bridge pad as claimed in claim 3, it is characterised in that：The locating ring（8）Positioned at the length of the groove
Degree is more than or equal to 10mm, locating ring（8）Thickness be 10~15mm.
5. a kind of bridge pad as described in claim 1 to 5 is any, it is characterised in that：The spherical crown liner plate includes upper spherical crown
Liner plate（6）With lower spherical crown liner plate（10）, the upper spherical crown liner plate（6）In upper spherically mounted hole, lower spherical crown liner plate（10）Position
In in lower peripheral surface mounting hole, the lower spherical crown liner plate（10）By the second fender pile（7）With upper spherical crown liner plate（6）Connection.
6. a kind of bridge pad as claimed in claim 5, it is characterised in that：The upper spherical crown liner plate（6）With lower spherical crown liner plate
（10）Faying face use broached-tooth design.
7. a kind of bridge pad as claimed in claim 6, it is characterised in that：The a height of 2mm of tooth of the broached-tooth design, the saw
The facewidth of toothing is 4mm.
8. a kind of bridge pad as claimed in claim 5, it is characterised in that：Sphere is provided with the upper spherically mounted hole
Polyfluortetraethylene plate（4）, lower peripheral surface polyfluortetraethylene plate is provided with the lower peripheral surface mounting hole（11）.
9. a kind of bridge pad as claimed in claim 1, it is characterised in that：The middle liner plate（5）Upper surface be provided with
Raceway（51）, the raceway（51）Spin is inside installed（3）.
10. a kind of bridge pad as claimed in claim 9, it is characterised in that：The raceway（51）Depth be 2mm, raceway
（51）Width be 2.5~8mm, the spin（3）Diameter be 5~10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219650.0A CN106758792B (en) | 2016-12-26 | 2016-12-26 | A kind of bridge pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219650.0A CN106758792B (en) | 2016-12-26 | 2016-12-26 | A kind of bridge pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106758792A true CN106758792A (en) | 2017-05-31 |
| CN106758792B CN106758792B (en) | 2018-07-06 |
Family
ID=58926444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219650.0A Expired - Fee Related CN106758792B (en) | 2016-12-26 | 2016-12-26 | A kind of bridge pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106758792B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794839A (en) * | 2017-11-30 | 2018-03-13 | 中铁二院工程集团有限责任公司 | A kind of stopping means of vibration absorption and isolation support |
| CN107806011A (en) * | 2017-11-30 | 2018-03-16 | 中铁二院工程集团有限责任公司 | A kind of small deformation friction pendulum support |
| CN107841942A (en) * | 2017-11-30 | 2018-03-27 | 中铁二院工程集团有限责任公司 | A kind of hyperboloid friction pendulum support |
| CN107858918A (en) * | 2017-10-30 | 2018-03-30 | 青岛德固特轨道装备有限公司 | One kind loads and unloads castellated unstressed fixed tumbler bearing soon |
| CN108004915A (en) * | 2017-11-30 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of novel friction puts bearing |
| CN108301318A (en) * | 2018-01-11 | 2018-07-20 | 旗舰集团有限公司 | A kind of bridge |
| CN108589560A (en) * | 2018-04-04 | 2018-09-28 | 武汉二航路桥特种工程有限责任公司 | Bridge cast steel list roller support correction restorative procedure |
| CN108677698A (en) * | 2018-06-29 | 2018-10-19 | 浙江秦山橡胶工程股份有限公司 | A kind of damping big corner ball shaped steel bearing |
| CN112324000A (en) * | 2020-09-16 | 2021-02-05 | 中国铁路设计集团有限公司 | Shock absorption and energy dissipation method under earthquake action |
| CN114197297A (en) * | 2021-09-28 | 2022-03-18 | 中铁建湖高速公路有限公司 | Soft soil foundation bridge head bump elimination device |
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| CN105755953A (en) * | 2016-04-22 | 2016-07-13 | 中铁二院工程集团有限责任公司 | Triple-friction-pendulum support |
| CN206512593U (en) * | 2016-12-26 | 2017-09-22 | 济南大学 | A kind of bridge pad |
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| JP2000130500A (en) * | 1998-10-26 | 2000-05-12 | Okumura Corp | Vibration suppressing device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858918A (en) * | 2017-10-30 | 2018-03-30 | 青岛德固特轨道装备有限公司 | One kind loads and unloads castellated unstressed fixed tumbler bearing soon |
| CN107858918B (en) * | 2017-10-30 | 2024-01-19 | 青岛德固特轨道装备有限公司 | Quick-assembling and disassembling jaw type stress-free fixing ball support |
| CN107841942B (en) * | 2017-11-30 | 2023-08-11 | 中铁二院工程集团有限责任公司 | Hyperboloid friction pendulum support |
| CN107794839B (en) * | 2017-11-30 | 2023-07-25 | 中铁二院工程集团有限责任公司 | Limiting device of shock-absorbing and isolating support |
| CN108004915A (en) * | 2017-11-30 | 2018-05-08 | 中铁二院工程集团有限责任公司 | A kind of novel friction puts bearing |
| CN107841942A (en) * | 2017-11-30 | 2018-03-27 | 中铁二院工程集团有限责任公司 | A kind of hyperboloid friction pendulum support |
| CN107806011A (en) * | 2017-11-30 | 2018-03-16 | 中铁二院工程集团有限责任公司 | A kind of small deformation friction pendulum support |
| CN107806011B (en) * | 2017-11-30 | 2023-08-22 | 中铁二院工程集团有限责任公司 | Small-deformation friction pendulum support |
| CN108004915B (en) * | 2017-11-30 | 2023-08-11 | 中铁二院工程集团有限责任公司 | Novel friction pendulum support |
| CN107794839A (en) * | 2017-11-30 | 2018-03-13 | 中铁二院工程集团有限责任公司 | A kind of stopping means of vibration absorption and isolation support |
| CN108301318A (en) * | 2018-01-11 | 2018-07-20 | 旗舰集团有限公司 | A kind of bridge |
| CN108589560A (en) * | 2018-04-04 | 2018-09-28 | 武汉二航路桥特种工程有限责任公司 | Bridge cast steel list roller support correction restorative procedure |
| CN108677698A (en) * | 2018-06-29 | 2018-10-19 | 浙江秦山橡胶工程股份有限公司 | A kind of damping big corner ball shaped steel bearing |
| CN108677698B (en) * | 2018-06-29 | 2024-03-26 | 浙江秦山橡胶工程股份有限公司 | Shock attenuation large-rotation-angle spherical steel support |
| CN112324000B (en) * | 2020-09-16 | 2022-10-21 | 中国铁路设计集团有限公司 | Shock absorption and energy dissipation method under earthquake action |
| CN112324000A (en) * | 2020-09-16 | 2021-02-05 | 中国铁路设计集团有限公司 | Shock absorption and energy dissipation method under earthquake action |
| CN114197297A (en) * | 2021-09-28 | 2022-03-18 | 中铁建湖高速公路有限公司 | Soft soil foundation bridge head bump elimination device |
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| CN106758792B (en) | 2018-07-06 |
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