CN207419240U - A kind of hold-down support with bidirectional damping and girder falling - Google Patents
A kind of hold-down support with bidirectional damping and girder falling Download PDFInfo
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- CN207419240U CN207419240U CN201721250669.1U CN201721250669U CN207419240U CN 207419240 U CN207419240 U CN 207419240U CN 201721250669 U CN201721250669 U CN 201721250669U CN 207419240 U CN207419240 U CN 207419240U
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Abstract
The utility model is related to damping vibration combination seat structure field, in particular to a kind of hold-down support with bidirectional damping and girder falling.Bearing includes the base board, lower support plate, middle support plate, upper bracket plate and the top plate that are sequentially overlapped placement from the bottom to top；Lower support plate can along bridge to being slidably connected to base board upper surface；Upper bracket plate upper surface can be slidably connected to top plate lower face along direction across bridge direction, and lower face is rotatably connected on middle support plate, and longitudinal damping device and longitudinal limiting device are provided between base board and lower support plate；Horizontal damping unit and horizontal limit devices are provided between the top plate and upper bracket plate.The seat structure of the utility model is compact, the problem of being limited to avoid installation space, increases the shock resistance of bridge and the reliability of girder falling protection, maintains easily.
Description
Technical field
The utility model is related to damping vibration combination seat structure fields, have bidirectional damping and girder falling work(in particular to one kind
The hold-down support of energy.
Background technology
At present, continuous beam and cable-stayed bridge and arch bridge etc. mainly use following four classes the way of restraint in the prior art：1st, it is main
Pier or bridge tower set two longitudinally fixed bearings：For the bridge that span is larger, bridge pier cannot keep out the earthquake water of entire beam body
Flat power, susceptor design are extremely difficult.Often bearing is cut up under macroseism, and the destruction of bridge structure is caused even to fall beam.2nd, two
A main Dun Chu sets speed lockup's device：Two main pier speed lockup devices play a role under geological process, averraged beam portion seismic force,
The seismic force that a single point undertakes can suitably be reduced, but since vibration damping cannot be played the role of, continue to increase with seismic force,
Under rarely occurred earthquake effect, girder can damage, it is difficult to repair.In addition it is resistance seismic force speed lockup's type number on Longspan Bridge
It is larger, it is of high cost.3rd, bridge centerline longitudinally sets shearing force tenon：Since brake force and fatigue strength requirement shearing force tenon are cut
Power cannot be too small, can cause " to cut " isolating affection unobvious, and girder need to set powerful stiffening construction, and construction is complicated and makes
Valency is high.Three of the above support system needs top beam to operate, maintenance is stranded after earthquake since bearing and beam portion damage having occurred after shake
Difficulty, repair time is long, costly；4th, main Dun Chu arrangements viscous damper：It is unsatisfactory for temperature and Braking lower girder longitudinal direction
Fixed requirement is used in the bridge for normally only having drag-line or other longitudinal restraints in beam portions such as large span stayed-cable bridges, but the party
Case bearing is provided separately with damper, and occupied space is big, and economy is poor.
With reference to the longitudinally fixed requirement of Braking lower girder, normally only the beam portions such as large span stayed-cable bridge have drag-line or
Used in the bridge of other longitudinal restraints, but program bearing is provided separately with damper, occupied space is big, and economy compared with
Difference.
" a kind of hold-down support subtracts shock insulation with what hydraulic pressure fuse dampers combined for Patent No. " CN206346108U " entitled
The Chinese utility model patent of combined isolator " describes a kind of shock mount with damper, and the bearing is in ball shaped steel bearing
Structure on add damper and limiting device, which sets damper, the arrangement of damper on bi-directional movable bearing
Glide direction between direction and support body and lower support plate is consistent, and such structure can generate preferable damping effect
Fruit improves security performance of the entire bearing in earthquake, but finds in actual use, and seismic shock direction may not be edge
The glide direction of support body and lower support plate, it may be possible to which the vertical direction, that may hang down for bi-directional movable bearing
The one side of the straight direction is easy for generation bearing and is occurred asking for damaged breaking-up under rare geological process due to no damper
Topic, causes beam body to depart from from bearing, serious security incident occurs.
Over-large displacement under geological process in order to prevent, is commonly installed anti-fall girder apparatus, causes to safeguard outside complicated, influence bridge
It sees, and installation space is limited sometimes, and additional installation anti-fall girder apparatus is extremely difficult.
The content of the invention
The ball shaped steel bearing that the purpose of this utility model seeks to solve the prior art mentioned in above-mentioned background technology is deposited
Only there is unidirectional damping and girder falling, can not achieve the problem of effect of bidirectionally limited girder falling, a kind of tool is provided
There are bidirectional damping and the hold-down support of girder falling function.
The technical solution of the utility model is：A kind of hold-down support with bidirectional damping and girder falling, including double
To active type bridle iron；The bearing include being sequentially overlapped from the bottom to top the base board of placement, lower support plate, middle support plate,
Upper bracket plate and top plate；The lower support plate can along bridge to being slidably connected to base board upper surface；The upper bracket
Plate upper surface can be slidably connected to top plate lower face along direction across bridge direction, and lower face is rotatably connected on middle support plate,
It is characterized in that：Longitudinal damping device and longitudinal limiting device are provided between the base board and lower support plate, two groups are indulged
To damping unit be placed in lower support plate direction across bridge both sides be used for buffer lower support plate along bridge to move, two groups longitudinal direction limit
Position device be placed in lower support plate suitable bridge to both sides be used to limiting lower support plate along suitable bridge to move；The top plate with it is upper
It is provided with horizontal damping unit and horizontal limit devices between support plate, two groups of transverse direction damping units are placed in the suitable of upper bracket plate
To both sides for buffering upper bracket plate moving along direction across bridge, two groups of horizontal limit devices are placed in upper bracket plate direction across bridge bridge
Both sides are used to limit upper bracket plate moving along direction across bridge.
The longitudinal damping device include along oil cylinder from bridge to arrangement, be arranged in oil cylinder can with oil cylinder
Generate the piston rod to relative displacement along bridge；The oil cylinder is fixedly connected to both ends along bridge by wing plate with lower support plate；Institute
The suitable bridge for the piston rod stated is fixed on to both ends on base board.
The longitudinal limiting device includes the first beam falling prevention stopping block being fixed on base board, is fixed on the
The first limited block on one beam falling prevention stopping block and the first force transmission element between the first limited block and lower support plate；It is described
The first force transmission element be fixed on lower support plate for one end and be fixed on the first limiting block to direction along bridge to end, the other end along bridge
Rod-like structure on block；The suitable bridge that first limited block applies it in the first force transmission element is to active force more than its limit value
When depart from from the first beam falling prevention stopping block.
The further horizontal damping unit includes the mild steel damper between upper bracket plate and top plate；It is described
Mild steel damper include more it is spaced apart in limb and centre during positioned at adjacent two between limb along direction across bridge direction
Limb；The side limb is along bridge, to the mild steel rod-like structure of arrangement, side limb one end is consolidated with top plate by bolt along bridge to end
Fixed connection, the other end are fixedly connected by connecting rod with another adjacent edge limb；Described intermediate limb one end passes through bolt and upper bracket plate
It is fixedly connected, the other end is fixedly connected with connecting rod along bridge to extending to.
The further horizontal limit devices include being fixed on the second beam falling prevention stopping block of top plate lower face, be fixed on
The second limited block on second beam falling prevention stopping block and the second force transmission element between the second limited block and upper bracket plate；Institute
The second force transmission element stated is one end is fixed on upper bracket plate direction across bridge end, the other end is fixed on the second /V along direction across bridge direction
Rod-like structure on block；Second limited block is limited in the direction across bridge active force that the second force transmission element applies it more than it
Depart from during value from the second beam falling prevention stopping block.
The further base board upper surface is provided with along the first guide rail along bridge to arrangement；The lower support plate
Lower face offers the first sliding groove corresponding with the first guide rail；First guide rail can along bridge to being slidably connected to first
In sliding slot.
The further top plate lower face is provided with the second guide rail arranged along direction across bridge；In the upper bracket plate
End face offers the second sliding slot corresponding with the second guide rail；Second guide rail can along bridge to being slidably connected to the second cunning
In slot.
The further middle support plate upper end is provided with hemispherical bulb；The upper bracket plate lower face offers
The ball trough in semicircle of corresponding bulb；The bulb is rotationally fastened in ball groove；The lower support plate and upper bracket plate
Between be provided with the position limiting structure that bulb is avoided to deviate from out of ball groove.
The further position limiting structure includes baffle；The baffle is the circle for being arranged at lower support plate upper surface
The vertical plate-like structure being looped around on the outside of support plate；It is corresponding with baffle that the upper bracket plate lower end outside is provided with a circle
Limiting plate；Described limiting plate one end is fixed on upper bracket plate lower end outside, and the other end is horizontally extending extremely to be connect with baffle
It touches.
The bottom plate anchor bolt being connected with pier stud is provided on the further base board；Be provided on the top plate with
The roof-bolt of beam body connection.
The advantages of the utility model, has：1st, damping unit is set respectively to both sides by the direction across bridge in bearing and along bridge,
Can realize bearing along direction across bridge and along bridge to cushioning effect, can play comprehensive protective effect when earthquake occurs, keep away
The damage problem for exempting from the generation of bearing rigid collision occur occurs；
2nd, limiting device is set respectively to both sides by the direction across bridge in bearing and along bridge, it can be in the direction across bridge in bearing
Direction and suitable bridge generate position-limiting action to direction, and when rare earthquake occurs, the shearing for being released effectively bearing horizontal direction is made
Firmly；
3rd, by the way that damping unit and limiting device are integrated on bearing, separately installed anti-fall girder construction is avoided, is simplified
The overall structure of entire bearing, makes total simpler.
The seat structure of the utility model is compact, the problem of being limited to avoid installation space, increases the antidetonation energy of bridge
Power and the reliability of girder falling protection, maintain easily.
Description of the drawings
Fig. 1：The front view of the utility model；
Fig. 2：The side view of the utility model；
Fig. 3：The A-A views of Fig. 1 of the utility model；
Fig. 4：The B-B views of Fig. 1 of the utility model；
Wherein：1-base board；2-lower support plate；3-middle support plate；4-upper bracket plate；5-top plate；6-oil cylinder；
7-piston rod；8-wing plate；9-the first beam falling prevention stopping block；10-the first limited block；11-the first force transmission element；12-side limb；
13-centre limb；14-connecting rod；15-the second beam falling prevention stopping block；16-the second limited block；17-the second force transmission element；18-the
One guide rail；19-the first sliding groove；20-the second guide rail；21-the second sliding slot；22-bulb；23-ball groove；24-baffle；25—
Limiting plate；26-bottom plate anchor bolt；27-roof-bolt.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in figures 1-4, a kind of hold-down support with bidirectional damping and girder falling, the bearing of the present embodiment are
Ball-type bi-directional movable bridle iron, bearing include being sequentially overlapped from the bottom to top the base board 1 of placement, lower support plate 2, middle support plate 3,
The bottom plate anchor bolt 26 being connected with pier stud is provided on upper bracket plate 4 and top plate 5, wherein base board 1, is provided on top plate 5 and beam
The roof-bolt 27 of body connection.Entire bearing is fixed between beam body and pier stud by bottom plate anchor bolt 26 and roof-bolt 27.
1 upper surface of base board be provided with along bridge to (direction across bridge of the present embodiment refers to the left and right directions in Fig. 3, i.e., transverse direction,
Refer to vertical direction in Fig. 3, i.e. longitudinal direction to direction along bridge) the first guide rail 18 of arrangement, 2 lower face of lower support plate offers and the
One guide rail, 18 corresponding the first sliding groove 19, the first guide rail 18 can along bridge to being slidably connected in the first sliding groove 19.Work as branch
Seat be subject to along active force from bridge to direction when, can pass through the slip of the first guide rail 18 and the first sliding groove 19 realize buffering.
5 lower face of top plate is provided with the second guide rail 20 arranged along direction across bridge, and 4 upper surface of upper bracket plate offers and second
20 corresponding second sliding slot 21 of guide rail, the second guide rail 20 can along bridge to being slidably connected in the second sliding slot 21.Work as bearing
When being subject to the active force in direction across bridge direction, it can be realized and buffered by the slip of the second guide rail 20 and the second sliding slot 21.
Middle 3 upper end of support plate is provided with hemispherical bulb 22, and 4 lower face of upper bracket plate offers the semicircle of corresponding bulb 22
Shape ball groove 23, bulb 22 are rotationally fastened in ball groove 23, are provided between lower support plate 2 and upper bracket plate 4 and are avoided bulb
22 position limiting structures deviate from out of ball groove 23.The combining structure of bulb 22 and ball groove 23 can alleviate the torsion and cut that bearing is subject to
Cut active force.
As shown in Fig. 1~2, position limiting structure includes baffle 24, and baffle 24 is the ring for being arranged at 2 upper surface of lower support plate
The vertical plate-like structure in middle 3 outside of support plate is wound on, 4 lower end outside of upper bracket plate is provided with a circle and 24 corresponding /V of baffle
Plate 25,25 one end of limiting plate are fixed on 4 lower end outside of upper bracket plate, and the other end is horizontally extending extremely to be contacted with baffle 24.
Baffle 24 makes bulb 22 that can only produce relative rotation with ball groove 23 in a small range with 25 combining structure of limiting plate, will not make middle branch
Seat board 3 and upper bracket plate 4, which are separated from, to be come.
In order to realize bearing direction across bridge and along bridge to damping action and girder falling effect, the present embodiment base board 1 with
Longitudinal damping device and longitudinal limiting device are provided between lower support plate 2, horizontal stroke is provided between top plate 5 and upper bracket plate 4
To damping unit and horizontal limit devices.Bearing is led into row buffering during by vertical and horizontal damping unit to E1 grades of earthquakes
It crosses horizontal and vertical limiting device and alleviates the horizontal shear active force that bearing is subject in E2 earthquakes, improve entire bearing in earthquake
When stability and security.
The present embodiment includes two groups of longitudinal damping devices, and as shown in Fig. 1,3 and 4, two groups of longitudinal damping devices are placed in down
The direction across bridge both sides of support plate 2 be used for buffer lower support plate 2 along bridge to move.Longitudinal damping device include along bridge to cloth
The oil cylinder 6 put is arranged in oil cylinder 6 piston rod 7 that can be generated with oil cylinder 6 along bridge to relative displacement, and oil cylinder 6 leads to along bridge to both ends
It crosses wing plate 8 to be fixedly connected with lower support plate 2, the suitable bridge of piston rod 7 is fixed on to both ends on base board 1.When earthquake occurs, pedestal
Generated between plate 1 and lower support plate 2 along bridge to opposing force, by mobile elimination of the piston rod 7 in oil cylinder 6, this is opposite
Active force, the bearing damage problem that rigid collision is avoided to generate.
Two groups of transverse direction damping units be placed in upper bracket plate 4 suitable bridge to both sides for buffering upper bracket plate 4 along direction across bridge
Movement.As shown in Figures 2 and 3, horizontal damping unit includes the mild steel damper between upper bracket plate 4 and top plate 5, mild steel
Damper include more it is spaced apart in limb 12 and intermediate limb during positioned at adjacent two between limb 12 along direction across bridge direction
13, side limb 12 is along bridge, to the mild steel rod-like structure of arrangement, limb 12 one end in side is fixed with top plate 5 by bolt along bridge to end
Connection, the other end are fixedly connected by connecting rod 14 with another adjacent edge limb 12, and intermediate 13 one end of limb is solid by bolt and upper bracket plate 4
Fixed connection, the other end are fixedly connected with connecting rod 14 along bridge to extending to.Side limb 12 and intermediate limb 13 are mild steel structure, are had good
Good elasticity, can effectively eliminate the horizontal applied force of earthquake generation, and side limb 12 and the intermediate bending of limb 13 are eliminated along direction across bridge
Horizontal applied force.
Two groups of longitudinal limiting devices be placed in lower support plate 2 suitable bridge to both sides for limit lower support plate 2 along bridge to
Movement.As shown in Fig. 2, longitudinal limiting device includes the first beam falling prevention stopping block 9 being fixed on base board 1, is fixed on first
The first limited block 10 on beam falling prevention stopping block 9 and the first force transmission element between the first limited block 9 and lower support plate 2
11, the first force transmission element 11 is fixed on lower support plate 2 for one end and is fixed on the first limit to direction along bridge to end, the other end along bridge
Rod-like structure on the block 10 of position, suitable the bridge that the first limited block 10 applies it in the first force transmission element 11 is to active force more than it
Depart from during limit value from the first beam falling prevention stopping block 9.When running into E2 grades of earthquakes, the phase that is generated between lower support plate 2 and base board 1
To displacement beyond limitation, it is more than the first limited block 10 and first that the first force transmission element 11, which applies the first limited block 10 active force,
Bonding strength between beam falling prevention stopping block 9, the first limited block 10 will come off from the first beam falling prevention stopping block 9, be disappeared with this
Except along bridge to active force.The limit value of the present embodiment just refers to the company between the first limited block 10 and the first beam falling prevention stopping block 9
Connect intensity.
Two groups of horizontal limit devices be placed in 4 direction across bridge of upper bracket plate both sides for limiting upper bracket plate 4 along direction across bridge
Movement.As shown in Figure 1, horizontal limit devices include being fixed on the second beam falling prevention stopping block 15 of 5 lower face of top plate, are fixed on the
The second limited block 16 on two beam falling prevention stopping blocks 15 and the second power transmission between the second limited block 16 and upper bracket plate 4
Part 17, the second force transmission element 17 is one end is fixed on 4 direction across bridge end of upper bracket plate, the other end is fixed on second along direction across bridge direction
Rod-like structure on limited block 16, the second limited block 16 are more than in the direction across bridge active force that the second force transmission element 17 applies it
Depart from during its limit value from the second beam falling prevention stopping block 15.When running into E2 grades of earthquakes, generated between upper bracket plate 4 and top plate 5
Beyond limitation, it is more than the second limited block 16 and that the second force transmission element 17, which applies the second limited block 16 active force, for relative displacement
Bonding strength between two beam falling prevention stopping blocks 15, the second limited block 16 will come off from the second beam falling prevention stopping block 15, with this
To eliminate the active force of direction across bridge.The limit value of the present embodiment just refers between the second limited block 16 and the second beam falling prevention stopping block 15
Bonding strength.
In actual use, when an earthquake occurs, shear force in the horizontal direction is generated between beam body and pier stud, this is cut
Cutting active force can be applied directly on bearing, and shear force can be dissipated by horizontal and vertical damping unit at this time, main
Will by guide rail and sliding slot it is opposite slide, the bending of slip of the piston rod 7 in oil cylinder 6 and intermediate limb 13 and side limb 12 disappears
It dissipates.
When earthquake reaches E1 grades, opposite in bearing slide it is violent, in the first limited block 10 and the first force transmission element 11
Under position-limiting action, lower support plate 2 and base board 1 without departing from；Make in the /V of the second limited block 16 and the second force transmission element 17
Under, without departing from guarantee beam body will not depart from bearing and pier stud under the action of E1 earthquakes between upper bracket plate 4 and top plate 5.
When earthquake reaches E2 grades, opposite in bearing slide it is more violent, the first force transmission element 11 directly by along bridge to cut
It cuts active force to be transferred on the first limited block 10, the first limited block 10 can depart from from the first beam falling prevention stopping block 9, due to the
Bonding strength between one beam falling prevention stopping block 9 and base board 1 is fine, lower support plate 2 can only two piece of first beam falling prevention stopping block 9 it
Between slide, without departing from entire base board 1.
The shear force of direction across bridge is directly transferred on the second limited block 16 by the second force transmission element 17, the second limiting block
Block 16 can depart from from the second beam falling prevention stopping block 15, since the bonding strength between the second beam falling prevention stopping block 15 and top plate 5 is fine,
Upper bracket plate 4 can only slide between two piece of second beam falling prevention stopping block 15, without departing from entire top plate 5.
So under the restriction effect of the first beam falling prevention stopping block 9 and the second beam falling prevention stopping block 15, entire bearing will not be in horizontal stroke
Bridge is slipped to along bridge on direction, ensure that the security of beam body.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the principle of the utility model, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model will
Protection domain is asked to be defined by appended claims and its equivalent.
Claims (10)
1. a kind of hold-down support with bidirectional damping and girder falling, including bi-directional movable shaped steel bearing；The bearing
Base board (1), lower support plate (2), middle support plate (3), upper bracket plate (4) and top plate including being sequentially overlapped placement from the bottom to top
(5)；The lower support plate (2) can along bridge to being slidably connected to base board (1) upper surface；The upper bracket plate (4)
Upper surface can be slidably connected to top plate (5) lower face along direction across bridge direction, and lower face is rotatably connected at middle support plate (3)
On, it is characterised in that：Longitudinal damping device and longitudinal spacing dress are provided between the base board (1) and lower support plate (2)
Put, two groups of longitudinal damping devices be placed in lower support plate (2) direction across bridge both sides be used for buffer lower support plate (2) along bridge to
It is mobile, two groups of longitudinal limiting devices be placed in lower support plate (2) suitable bridge to both sides for limit lower support plate (2) along suitable bridge to
Movement；Horizontal damping unit and horizontal limit devices are provided between the top plate (5) and upper bracket plate (4), two groups horizontal
To damping unit be placed in upper bracket plate (4) suitable bridge to both sides for buffering upper bracket plate (4) moving along direction across bridge, two groups
Horizontal limit devices be placed in upper bracket plate (4) direction across bridge both sides for limiting upper bracket plate (4) moving along direction across bridge.
2. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：It is described
Longitudinal damping device include along oil cylinder (6) from bridge to arrangement, be arranged in oil cylinder (6) with oil cylinder (6) can generate along bridge to
The piston rod (7) of relative displacement；The oil cylinder (6) is fixedly connected to both ends along bridge by wing plate (8) with lower support plate (2)；
The suitable bridge of the piston rod (7) is fixed on to both ends on base board (1).
3. a kind of hold-down support with bidirectional damping and girder falling as claimed in claim 1 or 2, it is characterised in that：
The longitudinal limiting device includes the first beam falling prevention stopping block (9) being fixed on base board (1), is fixed on the first girder falling gear
The first limited block (10) on block (9) and the first force transmission element between the first limited block (9) and lower support plate (2)
(11)；First force transmission element (11) for one end be fixed on lower support plate (2) along bridge to end, the other end along bridge to direction
The rod-like structure being fixed on the first limited block (10)；First limited block (10) is in the first force transmission element (11) to it
Suitable the bridge applied to active force more than its limit value when depart from from the first beam falling prevention stopping block (9).
4. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：It is described
Horizontal damping unit include mild steel damper between upper bracket plate (4) and top plate (5)；The mild steel damper bag
Include more it is spaced apart in limb (12) and the intermediate limb (13) during positioned at adjacent two between limb (12) along direction across bridge direction；
The side limb (12) is along the mild steel rod-like structure along bridge to arrangement, and limb (12) one end in side is by bolt and top plate (5) along bridge
It is fixedly connected to end, the other end is fixedly connected by connecting rod (14) with another adjacent edge limb (12)；The intermediate limb (13) one
End is fixedly connected by bolt with upper bracket plate (4), and the suitable bridge in other end edge is fixedly connected with connecting rod (14) to extending to.
5. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1 or 4, it is characterised in that：
The horizontal limit devices include being fixed on second beam falling prevention stopping block (15) of top plate (5) lower face, to be fixed on second anti-fall
The second limited block (16) on beam block (15) and second between the second limited block (16) and upper bracket plate (4) passes
Power part (17)；Second force transmission element (17) is fixed on upper bracket plate (4) direction across bridge end, the other end along direction across bridge for one end
Direction is fixed on the rod-like structure on the second limited block (16)；Second limited block (16) is in the second force transmission element (17)
The direction across bridge active force applied to it departs from when being more than its limit value from the second beam falling prevention stopping block (15).
6. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：It is described
Base board (1) upper surface be provided with along the first guide rail (18) from bridge to arrangement；Described lower support plate (2) lower face opens up
There is the first sliding groove (19) corresponding with the first guide rail (18)；First guide rail (18) can along bridge to being slidably connected to the
In one sliding slot (19).
7. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：It is described
Top plate (5) lower face be provided with along direction across bridge arrange the second guide rail (20)；Described upper bracket plate (4) upper surface offers
The second sliding slot (21) corresponding with the second guide rail (20)；Second guide rail (20) can along bridge to being slidably connected to second
In sliding slot (21).
8. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：It is described
Middle support plate (3) upper end be provided with hemispherical bulb (22)；Described upper bracket plate (4) lower face offers corresponding bulb
(22) ball trough in semicircle (23)；The bulb (22) is rotationally fastened in ball groove (23)；The lower support plate (2)
The position limiting structure for avoiding bulb (22) abjection out of ball groove (23) is provided between upper bracket plate (4).
9. a kind of hold-down support with bidirectional damping and girder falling as claimed in claim 8, it is characterised in that：It is described
Position limiting structure include baffle (24)；The baffle (24) is to be arranged at the ring of lower support plate (2) upper surface to be wound on
Vertical plate-like structure on the outside of support plate (3)；It is corresponding with baffle (24) that described upper bracket plate (4) lower end outside is provided with a circle
Limiting plate (25)；Described limiting plate (25) one end is fixed on upper bracket plate (4) lower end outside, and the other end prolongs in the horizontal direction
It extends and is contacted with baffle (24).
10. a kind of hold-down support with bidirectional damping and girder falling as described in claim 1, it is characterised in that：Institute
The bottom plate anchor bolt (26) being connected with pier stud is provided on the base board (1) stated；It is provided on the top plate (5) and is connected with beam body
Roof-bolt (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250669.1U CN207419240U (en) | 2017-09-27 | 2017-09-27 | A kind of hold-down support with bidirectional damping and girder falling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250669.1U CN207419240U (en) | 2017-09-27 | 2017-09-27 | A kind of hold-down support with bidirectional damping and girder falling |
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| CN207419240U true CN207419240U (en) | 2018-05-29 |
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| CN107513938A (en) * | 2017-09-27 | 2017-12-26 | 中铁第四勘察设计院集团有限公司 | A kind of hold-down support with bidirectional damping and girder falling function |
| CN109208460A (en) * | 2018-10-22 | 2019-01-15 | 北方民族大学 | A kind of bridge earthquake resistance device facilitating maintenance |
| CN110820536A (en) * | 2019-11-04 | 2020-02-21 | 中铁第四勘察设计院集团有限公司 | Bridge stop device and bridge |
| CN111074750A (en) * | 2019-12-06 | 2020-04-28 | 东南大学 | Bridge seismic isolation and reduction structure for limiting rotation in main beam surface |
| CN111321813A (en) * | 2020-04-07 | 2020-06-23 | 钟建敏 | Bidirectional sliding connection support |
| CN115976986A (en) * | 2023-01-04 | 2023-04-18 | 新景建设有限公司 | Anti-seismic protection structure for historic building bridge and installation method |
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| CN109208460A (en) * | 2018-10-22 | 2019-01-15 | 北方民族大学 | A kind of bridge earthquake resistance device facilitating maintenance |
| CN110820536A (en) * | 2019-11-04 | 2020-02-21 | 中铁第四勘察设计院集团有限公司 | Bridge stop device and bridge |
| CN111074750A (en) * | 2019-12-06 | 2020-04-28 | 东南大学 | Bridge seismic isolation and reduction structure for limiting rotation in main beam surface |
| CN111321813A (en) * | 2020-04-07 | 2020-06-23 | 钟建敏 | Bidirectional sliding connection support |
| CN115976986A (en) * | 2023-01-04 | 2023-04-18 | 新景建设有限公司 | Anti-seismic protection structure for historic building bridge and installation method |
| CN115976986B (en) * | 2023-01-04 | 2023-09-15 | 新景建设有限公司 | Anti-seismic protection structure for ancient building bridge and installation method |
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