CN108457176A - A kind of the bridge pedestal and its anti-shock methods of antidetonation - Google Patents
A kind of the bridge pedestal and its anti-shock methods of antidetonation Download PDFInfo
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- CN108457176A CN108457176A CN201810327047.7A CN201810327047A CN108457176A CN 108457176 A CN108457176 A CN 108457176A CN 201810327047 A CN201810327047 A CN 201810327047A CN 108457176 A CN108457176 A CN 108457176A
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- fixedly connected
- slide plate
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- sliding block
- bridge
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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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Abstract
The invention discloses a kind of bridge pedestals of antidetonation, including support base, the bottom of the support base is fixedly connected with support plate, and the both sides of support plate bottom are connected with motion bar, the bottom end of the motion bar is connected with sliding block, and the basal sliding of the sliding block is connected with slide plate, and the bottom of the sliding block runs through slide plate and extends to the inside of slide plate, the side that the sliding block extends to inside slide plate is connect with the basal sliding of slide plate inner wall, is related to bridge earthquake resistance technical field.A kind of the bridge pedestal and its anti-shock methods of antidetonation, it is fixedly connected with push rod by the side of sliding block and positioned at the inside of slide plate, reduce generated vibrations when vehicle traveling and earthquake, stationarity and the safety for keeping bridge floor, improve the effect of damping, and sleeve has been fixedly connected with by the both sides of support plate bottom and between the opposite side of montant, multiple damping, damping it is better, bridge floor is more steady, extends the service life of bridge.
Description
Technical field
The present invention relates to bridge earthquake resistance technical field, the bridge pedestal and its anti-shock methods of specially a kind of antidetonation.
Background technology
Bridge refers generally to be erected in rivers,lakes and seas, the structures for making traffic etc. that can smoothly pass through, modern to adapt to
The transportation industry of high speed development, bridge be also extended to across mountain stream, unfavorable geology or meet other traffic need and set up make
Current more easily building, bridge are generally made of superstructure, substructure, bearing and attached structure, top knot
Structure is also known as bridge span structure, is across the primary structure of obstacle；Substructure includes abutment, bridge pier and basis；Bearing is spanning knot
The load transfer device of structure and the bearing place setting of bridge pier or abutment；Attached structure then refer to transition slab at bridge head, truncated cone banking, shore protection and
Training works etc., with the development of transportation and the raising of construction standard, pedestal in bridge and Other Engineering not
Supporting role is functioned only as, but also has the function of vibration damping, resistance to plucking, release moment of flexure and resist displacement.
Currently, occurring the case where precast bridge plate falls from bridge pier beam often in earthquake, bridge plate is fallen from bridge pier beam
The reason of falling is, when an earthquake occurs, produces prodigious horizontal force and vertical force, makes precast bridge plate occurred level
Displacement and upper and lower displacement, when displacement be more than precast bridge plate on bridge pier after shelving width, bridge plate will fall,
Pedestrian and vehicle at this point, not only bridge is damaged, but also on bridge, under bridge will appear serious accident, security performance
It is relatively low.
Invention content
（One）The technical issues of solution
In view of the deficiencies of the prior art, the present invention provides the bridge pedestal and its anti-shock methods of a kind of antidetonation, damping is solved
Effect is poor, the low problem of security performance.
（Two）Technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of the bridge pedestal and its antidetonation of antidetonation
The bottom of method, including support base, the support base is fixedly connected with support plate, and the activity of the both sides of support plate bottom is even
It is connected to motion bar, the bottom end of the motion bar is connected with sliding block, and the basal sliding of the sliding block is connected with slide plate, the cunning
The bottom of block runs through slide plate and extends to the inside of slide plate, and the sliding block extends to the bottom of the side inside slide plate and slide plate inner wall
Portion is slidably connected, and the side of the sliding block and is fixedly connected with push rod positioned at the inside of slide plate, and one end of the push rod is through sliding
Plate and the outside for extending to slide plate are fixedly connected with buffer spring, the support plate between two opposite sides of the sliding block
The both sides of bottom and montant is fixedly connected between the opposite side of motion bar, side and the activity on the montant surface
Resetting spring is fixedly connected between the side on bar surface, the both sides at the top of the slide plate offer cunning compatible with sliding block
Slot, both sides at the top of the slide plate and has been fixedly connected with outline border, the bottom end of the montant between the opposite side of sliding block
Through outline border and the inside of outline border is extended to, one end that the montant extends to inside outline border is fixedly connected with block, and keeps off
It is fixedly connected with fastening spring between the bottom and the bottom of outline border inner wall of block；The both sides of the support base bottom are flexibly connected
There is the first fixed link, and the bottom end of the first fixed link is connected with the second fixed link, the bottom end of second fixed link is lived
It is dynamic to be connected with bearing, and it is fixedly connected with third between the side on the first fixed link surface and the side on the second fixed link surface
Spring；The both sides of the slide plate bottom have been fixedly connected with riser, and the surface of riser slidably connects lantern ring, the lantern ring
Both sides be connected with supporting rod, and the top of supporting rod is flexibly connected with the bottom of slide plate.
Preferably, the both sides of the support plate bottom and it has been fixedly connected with sleeve between the opposite side of montant,
The bottom end of the sleeve is connected with connecting rod, and connecting rod extends to one end of sleeve inner and is fixedly connected with baffle,
The first spring is fixedly connected between the top of the baffle and the top of sleeve lining；The connecting rod extends to sleeve bottom
One end be fixedly connected with rubber suction cups, and be fixedly connected at the top of the bottom of rubber suction cups and slide plate, the connecting rod
Surface and positioned at sleeve bottom end and the top of rubber suction cups between be fixedly connected with second spring.
Preferably, the bottom of two risers has been fixedly connected with transverse slat, and the top movable of the transverse slat is connected with cunning
The bottom end of bar, the slide bar runs through transverse slat and extends to the bottom of transverse slat, and the slide bar extends to one end and the branch of transverse slat bottom
The top of seat is fixedly connected, and the top of slide bar is fixedly connected with fixed block, the surface of the slide bar and the bottom positioned at transverse slat
The 4th spring is fixedly connected between portion and the top of bearing.
Preferably, the both sides of the transverse slat bottom are connected with quarter butt, and the bottom end of quarter butt is connected with length
Bar, the bottom end of the stock and the top movable of bearing connect, and the side on the quarter butt surface is fixedly connected with the bottom of transverse slat
There is the 5th spring.
Preferably, the bottom of the bearing is fixedly connected with column, and the bottom end of column is fixedly connected with pedestal.
The invention also discloses a kind of anti-shock methods of the bridge pedestal of antidetonation, specifically include following steps：
S1, when people or vehicle are walked from bridge floor, the pressure of bridge floor will act on support base, and support base will
It transfers the pressure in support plate；
S2, support plate will be pressed down against motion bar, and motion bar band movable slider is slided in slide plate, and sliding block drives push rod past
The external movement of slide plate, buffer spring can limit the scope of activities of sliding block；
The inside that S3, montant will drive fastening spring toward outline border under stress is moved, and sleeve can be pressed downward second spring,
Baffle will squeeze the first spring under the effect of the pressure；
Chance is mutually moved under extrusion for S4, the first fixed link and the second fixed link, during riser is pressed downward transverse slat,
Transverse slat can be slided on slide bar, be squeezed the 4th spring.
（Three）Advantageous effect
The present invention provides the bridge pedestals and its anti-shock methods of a kind of antidetonation.Has following advantageous effect：
（1）, a kind of the bridge pedestal and its anti-shock methods of antidetonation, connected by the side of sliding block and being fixed positioned at the inside of slide plate
It is connected to push rod, one end of push rod runs through slide plate and extends to the outside of slide plate, and two sliding blocks are fixedly connected between opposite side
There is a buffer spring, the both sides of support plate bottom and has been fixedly connected with montant, montant table between the opposite side of motion bar
It is fixedly connected with resetting spring between the side and the side on motion bar surface in face, the both sides at the top of slide plate offer and sliding block
Compatible sliding slot, both sides at the top of slide plate and has been fixedly connected with outline border, the bottom of montant between the opposite side of sliding block
End runs through outline border and extends to the inside of outline border, and one end that montant extends to inside outline border is fixedly connected with block, and block
Bottom and the bottom of outline border inner wall between be fixedly connected with fastening spring, reduce generated shake when vehicle traveling and earthquake
It is dynamic, stationarity and the safety of bridge floor are kept, the effect of damping is improved.
（2）, a kind of the bridge pedestal and its anti-shock methods of antidetonation, by the both sides of support plate bottom and be located at montant phase
To side between be fixedly connected with sleeve, the bottom end of sleeve is connected with connecting rod, and connecting rod extends to sleeve
Internal one end is fixedly connected with baffle, and the first spring is fixedly connected between the top of baffle and the top of sleeve lining, even
One end that extension bar extends to sleeve bottom is fixedly connected with rubber suction cups, and the bottom of rubber suction cups and the top of slide plate are fixed
Connection, the surface of connecting rod and positioned at sleeve bottom end and the top of rubber suction cups between be fixedly connected with second spring, it is multiple
Damping, damping it is better, bridge floor is more steady.
（3）, a kind of the bridge pedestal and its anti-shock methods of antidetonation, be connected with by the both sides of support base bottom
First fixed link, and the bottom end of the first fixed link is connected with the second fixed link, the bottom end flexible connection of the second fixed link
There is bearing, and third spring be fixedly connected between the side on the first fixed link surface and the side on the second fixed link surface,
The both sides of slide plate bottom have been fixedly connected with riser, and the surface of riser slidably connects lantern ring, and the both sides of lantern ring are movable
It is connected with supporting rod, and the top of supporting rod is flexibly connected with the bottom of slide plate, bridge can integrally be realized good anti-
Shake and limit effect extend the service life of bridge to protect bridge well.
（4）, a kind of the bridge pedestal and its anti-shock methods of antidetonation, cross has been fixedly connected with by the bottom of two risers
The top movable of plate, transverse slat is connected with slide bar, and the bottom end of slide bar runs through transverse slat and extends to the bottom of transverse slat, and slide bar extends to cross
Be fixedly connected at the top of the one end in board bottom portion and bearing, and the top of slide bar is fixedly connected with fixed block, the surface of slide bar and
It is fixedly connected with the 4th spring between the bottom of transverse slat and the top of bearing, the both sides of transverse slat bottom are connected with short
Bar, and the bottom end of quarter butt is connected with stock, and the bottom end of stock and the top movable of bearing connect, the side on quarter butt surface
It is fixedly connected with the 5th spring with the bottom of transverse slat, keeps the stationarity of bridge, improves the life peace of people to a greater extent
Entirely.
Description of the drawings
Fig. 1 is schematic structural view of the invention；Fig. 2 is the sectional view of tube-in-tube structure of the present invention；
Fig. 3 is the sectional view of frame structure of the present invention；
Fig. 4 is the sectional view of skateboard of the present invention；
Fig. 5 is the partial enlarged view at A in Fig. 1 of the present invention；
Fig. 6 is the partial enlarged view at B in Fig. 1 of the present invention；
In figure, 1 support base, 2 support plates, 3 motion bars, 4 sliding blocks, 5 slide plates, 6 push rods, 7 buffer springs, 8 montants, 9 resetting springs,
10 sliding slots, 11 outline borders, 12 blocks, 13 fastening springs, 14 sleeves, 15 connecting rods, 16 baffles, 17 first springs, 18 rubber suction cups,
19 second springs, 20 first fixed links, 21 second fixed links, 22 bearings, 23 third springs, 24 risers, 25 lantern rings, 26 supports
Bar, 27 transverse slats, 28 slide bars, 29 fixed blocks, 30 the 4th springs, 31 quarter butts, 32 stocks, 33 the 5th springs, 34 columns, 35 pedestals.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 6 are please referred to Fig.1, the embodiment of the present invention provides a kind of technical solution：A kind of bridge pedestal of antidetonation and its antidetonation side
The both sides of method, including support base 1,1 bottom of support base are connected with the first fixed link 20, and the bottom of the first fixed link 20
End is connected with the second fixed link 21, and the bottom end of the second fixed link 21 is connected with bearing 22, and the bottom of bearing 22 is fixed
It is connected with column 34, and the bottom end of column 34 is fixedly connected with pedestal 35, and the side on 20 surface of the first fixed link and the
Third spring 23 is fixedly connected between the side on two fixed links, 21 surface, the bottom of support base 1 is fixedly connected with support plate 2,
The both sides of 2 bottom of support plate and sleeve 14 is fixedly connected between the opposite side of montant 8, the bottom end activity of sleeve 14
It is connected with connecting rod 15, one end that connecting rod 15 extends to 14 bottom of sleeve is fixedly connected with rubber suction cups 18, and rubber is inhaled
The bottom of disk 18 is fixedly connected with the top of slide plate 5, the surface of connecting rod 15 and bottom end and the rubber suction cups 18 for being located at sleeve 14
Top between be fixedly connected with second spring 19, and one end that connecting rod 15 extends to inside sleeve 14 is fixedly connected with gear
Plate 16, is fixedly connected with the first spring 17 between the top of 14 inner wall of top and sleeve of baffle 16, and 2 bottom of support plate
Both sides are connected with motion bar 3, and the bottom end of motion bar 3 is connected with sliding block 4, and the basal sliding of sliding block 4 is connected with cunning
The both sides of plate 5,5 bottom of slide plate have been fixedly connected with riser 24, and the bottom of two risers 24 has been fixedly connected with transverse slat 27, transverse slat
The both sides of 27 bottoms are connected with quarter butt 31, and the bottom end of quarter butt 31 is connected with stock 32, the bottom end of stock 32
It is connect with the top movable of bearing 22, the side on 31 surface of quarter butt is fixedly connected with the 5th spring 33 with the bottom of transverse slat 27, horizontal
The top movable of plate 27 is connected with slide bar 28, and the bottom end of slide bar 28 runs through transverse slat 27 and extends to the bottom of transverse slat 27, slide bar 28
The one end for extending to 27 bottom of transverse slat is fixedly connected with the top of bearing 22, and the top of slide bar 28 is fixedly connected with fixed block
29, the surface of slide bar 28 and positioned at transverse slat 27 bottom and the top of bearing 22 between be fixedly connected with the 4th spring 30, and
The surface of riser 24 slidably connects lantern ring 25, and the both sides of lantern ring 25 are connected with supporting rod 26, and supporting rod 26
Top is flexibly connected with the bottom of slide plate 5, and the bottom of sliding block 4 runs through slide plate 5 and extends to the inside of slide plate 5, and sliding block 4 extends to
Side inside slide plate 5 is connect with the basal sliding of 5 inner wall of slide plate, the side of sliding block 4 and is fixedly connected positioned at the inside of slide plate 5
There is push rod 6, one end of push rod 6 runs through slide plate 5 and extends to the outside of slide plate 5, fixed between the opposite side of two sliding blocks 4 to connect
It is connected to buffer spring 7, the both sides of 2 bottom of support plate and has been fixedly connected with montant 8 between the opposite side of motion bar 3,
Resetting spring 9 is fixedly connected between the side on 3 surface of side and motion bar on 8 surface of montant, the both sides at 5 top of slide plate are opened
Equipped with sliding slot 10 compatible with sliding block 4, the both sides at the top of slide plate 5 and it is fixedly connected between the opposite side of sliding block 4
There are outline border 11, the bottom end of montant 8 to run through outline border 11 and extend to the inside of outline border 11, montant 8 extends to one inside outline border 11
End is fixedly connected with block 12, and is fixedly connected with fastening spring between the bottom of 11 inner wall of the bottom of block 12 and outline border
13。
The invention also discloses a kind of anti-shock methods of the bridge pedestal of antidetonation, which is characterized in that specifically includes following step
Suddenly：
S1, when people or vehicle are walked from bridge floor, the pressure of bridge floor will act on support base 1, and support base 1 is just
It can transfer the pressure in support plate 2；
S2, support plate 2 will be pressed down against motion bar 3, and motion bar 3 is slided with movable slider 4 in slide plate 5, and sliding block 4 drives
For push rod 6 toward the external mobile of slide plate 5, buffer spring 7 can limit the scope of activities of sliding block 4；
The inside that S3, montant 8 will drive fastening spring 13 toward outline border 11 under stress is moved, and sleeve 14 can be pressed downward
Two springs 19, baffle 26 will squeeze the first spring 27 under the effect of the pressure；
Chance is mutually moved under extrusion for S4, the first fixed link 20 and the second fixed link 21, and riser 24 is pressed downward transverse slat 27
During, transverse slat 27 can be slided on slide bar 28, be squeezed the 4th spring 30.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of bridge pedestal of antidetonation, including support base（1）, it is characterised in that：The support base（1）Bottom be fixedly connected
There is support plate（2）, and support plate（2）The both sides of bottom are connected with motion bar（3）, the motion bar（3）Bottom end
It is connected with sliding block（4）, the sliding block（4）Basal sliding be connected with slide plate（5）, the sliding block（4）Bottom through slide
Plate（5）And extend to slide plate（5）Inside, the sliding block（4）Extend to slide plate（5）Internal side and slide plate（5）Inner wall
Basal sliding connects, the sliding block（4）Side and be located at slide plate（5）Inside be fixedly connected with push rod（6）, the push rod
（6）One end run through slide plate（5）And extend to slide plate（5）Outside, two sliding blocks（4）It is fixed between opposite side to connect
It is connected to buffer spring（7）, the support plate（2）The both sides of bottom and be located at motion bar（3）It is fixed between opposite side to connect
It is connected to montant（8）, the montant（8）The side on surface and motion bar（3）It is fixedly connected with resetting spring between the side on surface
（9）, the slide plate（5）The both sides at top offer and sliding block（4）Compatible sliding slot（10）, the slide plate（5）Top
Both sides and be located at sliding block（4）It is fixedly connected with outline border between opposite side（11）, the montant（8）Bottom end run through outline border
（11）And extend to outline border（11）Inside, the montant（8）Extend to outline border（11）Internal one end is fixedly connected with block
（12）, and block（12）Bottom and outline border（11）It is fixedly connected with fastening spring between the bottom of inner wall（13）；The branch
Support seat（1）The both sides of bottom are connected with the first fixed link（20）, and the first fixed link（20）Bottom end flexible connection
There is the second fixed link（21）, second fixed link（21）Bottom end be connected with bearing（22）, and the first fixed link
（20）The side on surface and the second fixed link（21）Third spring is fixedly connected between the side on surface（23）；The slide plate
（5）The both sides of bottom have been fixedly connected with riser（24）, and riser（24）Surface slidably connect lantern ring（25）, the set
Ring（25）Both sides be connected with supporting rod（26）, and supporting rod（26）Top and slide plate（5）Bottom activity connect
It connects.
2. a kind of bridge pedestal of antidetonation according to claim 1, it is characterised in that：The support plate（2）The two of bottom
Side and be located at montant（8）It is fixedly connected with sleeve between opposite side（14）, the sleeve（14）Bottom end flexible connection
There is connecting rod（15）, and connecting rod（15）Extend to sleeve（14）Internal one end is fixedly connected with baffle（16）, the gear
Plate（16）Top and sleeve（14）The first spring is fixedly connected between the top of inner wall（17）.
3. a kind of bridge pedestal of antidetonation according to claim 1, it is characterised in that：The connecting rod（15）Extend to set
Cylinder（14）One end of bottom is fixedly connected with rubber suction cups（18）, and rubber suction cups（18）Bottom and slide plate（5）Top
It is fixedly connected, the connecting rod（15）Surface and be located at sleeve（14）Bottom end and rubber suction cups（18）Top between it is fixed
It is connected with second spring（19）.
4. a kind of bridge pedestal of antidetonation according to claim 3, it is characterised in that：Two risers（24）Bottom
It has been fixedly connected with transverse slat（27）, the transverse slat（27）Top movable be connected with slide bar（28）, the slide bar（28）Bottom end
Through transverse slat（27）And extend to transverse slat（27）Bottom, the slide bar（28）Extend to transverse slat（27）One end of bottom and bearing
（22）Top be fixedly connected, and slide bar（28）Top be fixedly connected with fixed block（29）, the slide bar（28）Surface
And it is located at transverse slat（27）Bottom and bearing（22）Top between be fixedly connected with the 4th spring（30）.
5. a kind of bridge pedestal of antidetonation according to claim 4, it is characterised in that：The transverse slat（27）The both sides of bottom
It is connected with quarter butt（31）, and quarter butt（31）Bottom end be connected with stock（32）, the stock（32）Bottom end
With bearing（22）Top movable connection, the quarter butt（31）The side on surface and transverse slat（27）Bottom be fixedly connected with the 5th
Spring（33）.
6. a kind of bridge pedestal of antidetonation according to claim 2, it is characterised in that：The bearing（22）Bottom fix
It is connected with column（34）, and column（34）Bottom end be fixedly connected with pedestal（35）.
7. a kind of anti-shock methods of the bridge pedestal of antidetonation, which is characterized in that specifically include following steps：
S1, when people or vehicle are walked from bridge floor, the pressure of bridge floor will act on support base（1）On, support base
（1）Support plate will be transferred the pressure to（2）On；
S2, support plate（2）Motion bar will be pressed down against（3）, motion bar（3）Band movable slider（4）In slide plate（5）In slided
It is dynamic, sliding block（4）Drive push rod（6）Toward slide plate（5）External mobile, buffer spring（7）Sliding block can be limited（4）Scope of activities；
S3, montant（8）Fastening spring will be driven under stress（13）Toward outline border（11）Inside moved, sleeve（14）Meeting
It is pressed downward second spring（19）, baffle（26）The first spring will be squeezed under the effect of the pressure（27）；
S4, the first fixed link（20）With the second fixed link（21）Chance is mutually moved under extrusion, riser（24）It is pressed downward
Transverse slat（27）During, transverse slat（27）It can be in slide bar（28）On slided, to the 4th spring（30）It is squeezed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327047.7A CN108457176A (en) | 2018-04-12 | 2018-04-12 | A kind of the bridge pedestal and its anti-shock methods of antidetonation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810327047.7A CN108457176A (en) | 2018-04-12 | 2018-04-12 | A kind of the bridge pedestal and its anti-shock methods of antidetonation |
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| CN109853372A (en) * | 2019-04-30 | 2019-06-07 | 太原科技大学 | A kind of bridge girder anti-seismic bearing with overloading alarming function |
| CN111088750A (en) * | 2019-12-27 | 2020-05-01 | 曹美晨 | Bridge pier and bridge connecting structure at telescopic position of bridge |
| CN111119033A (en) * | 2020-02-11 | 2020-05-08 | 郭云美 | Novel anti-seismic damper for bridge safety and implementation method |
| CN111455825A (en) * | 2020-04-30 | 2020-07-28 | 华东交通大学 | Bridge subtracts isolation bearing with multiple limit function |
| CN112144391A (en) * | 2020-10-30 | 2020-12-29 | 温州安荷桥科技有限公司 | Special shock insulation support of bridge |
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| CN112411364A (en) * | 2020-11-25 | 2021-02-26 | 崔德念 | Civil engineering construction bridge beam supports |
| CN112853950A (en) * | 2021-01-11 | 2021-05-28 | 李宝 | Bridge anti-seismic support |
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Application publication date: 20180828 |