CN210561694U - Support with shock insulation device for large-span continuous beam - Google Patents

Support with shock insulation device for large-span continuous beam Download PDF

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Publication number
CN210561694U
CN210561694U CN201921292772.1U CN201921292772U CN210561694U CN 210561694 U CN210561694 U CN 210561694U CN 201921292772 U CN201921292772 U CN 201921292772U CN 210561694 U CN210561694 U CN 210561694U
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China
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spherical
plate
sliding plate
curved
support
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CN201921292772.1U
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Inventor
刘海亮
宁伯伟
石建华
李世文
张巨生
陈宏�
张启帆
张科
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China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
Chengdu Xinzhu Road and Bridge Machinery Co Ltd
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China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
Chengdu Xinzhu Road and Bridge Machinery Co Ltd
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Abstract

The utility model discloses a large-span continuous beam is with support that has shock isolation device includes upper plate, spherical crown welt, curved plate and hypoplastron from the top down in proper order, set up the plane slide between upper plate bottom surface and the spherical crown welt top plane and carry on spacingly to both sides to the spherical crown welt cross bridge through setting up the cross bridge in the upper plate bottom surface to limit structure, set up the sphere slide between spherical crown welt bottom sphere and the curved plate top concave surface, set up down the sphere slide between curved plate bottom curved surface and the hypoplastron top concave surface, it is spacing to both sides to set up the longitudinal bridge to the curved plate longitudinal bridge to limit structure on the hypoplastron. The utility model discloses can satisfy bridge normal use function, possess horizontal shock-absorbing function again.

Description

Support with shock insulation device for large-span continuous beam
Technical Field
The utility model relates to a large-span continuous beam is with support that has shock isolation device belongs to road bridge technical field.
Background
With the continuous promotion of national railway construction, many railway lines need to pass through high-intensity seismic regions, so that the damping design is required to be carried out when a bridge is constructed.
At present, a plurality of modes of realizing the shock absorption function by generally adopting a friction pendulum support or a viscous damper are adopted on a bridge. Viscous dampers can only achieve shock absorption in a single direction (generally longitudinal); and the friction pendulum support can make the bridge produce vertical ascending displacement, produces inferior internal force to bridge hyperstatic structure, is unfavorable for the stability of bridge structure system, adopts friction pendulum support on the railway bridge very few. Therefore, the bridge is usually made of an anti-seismic structure in the transverse direction, which causes great impact of transverse seismic force on the bridge structure and damages to the bridge.
For a long-span continuous beam, the bridge supporting system can meet the requirements of normal transverse, longitudinal limiting and vertical corners, and also can meet the requirements of horizontal corners of the bridge. The bridge support system is required to horizontally limit the beam end, and support bridges at other positions can transversely move and also can longitudinally move.
When the bridge is in seismic isolation design, the viscous damper is longitudinally adopted for damping, the support is transversely required to be used for damping, the conventional support does not have a damping function, and the friction pendulum support with the damping function cannot be used on the railway bridge. Therefore, a novel support is needed, which can not only meet the normal use function of the bridge, but also has the shock absorption function.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to the problem that above-mentioned exists, provide a large-span continuous beam with support that has seismic isolation device, can satisfy bridge normal use function, possess the shock-absorbing function again.
The utility model discloses a technical scheme be like:
the utility model provides a large-span continuous beam is with support that has shock isolation device, from the top down includes upper plate, spherical crown welt, curved plate and hypoplastron in proper order, set up the plane slide between upper plate bottom surface and the spherical crown welt top plane and set up the cross-bridge through the upper plate bottom surface and carry on spacingly to both sides to the cross-bridge of spherical crown welt through setting up cross-bridge to limit structure, set up the sphere slide in the top between spherical crown welt bottom sphere and the curved plate top concave surface, set up down the sphere slide between curved plate bottom curved surface and the hypoplastron top concave surface, it is spacing to the curved plate longitudinal bridge to both sides to set up longitudinal bridge on the hypoplastron.
To sum up, owing to adopted above-mentioned technical scheme, the utility model discloses can satisfy bridge normal use function, possess horizontal shock-absorbing function again.
Under the normal operating condition, because upper plate and spherical crown welt side have carried out horizontal spacing, the vertical plane slides in order to adapt to the vertical ascending temperature displacement of bridge between upper plate and the spherical crown welt, and the substructure of this support has vertically carried out spacing can not carry out longitudinal movement, can not produce vertical ascending volume of lifting. Longitudinal spacing is carried out between curved plate side and the hypoplastron, and when the roof beam body lateral displacement, the upper plate drives spherical crown welt, curved plate and produces lateral sliding together, adapts to the horizontal ascending temperature displacement of bridge, and the lateral sliding face is the curved surface, but because the horizontal displacement volume of bridge system is very little, the volume of raising transversely of production is very little, does not have the influence to bridge structures atress. The sliding surface between the spherical crown lining plate and the curved plate is a spherical surface, and when the bridge is vertically twisted and horizontally twisted, the support can be simultaneously suitable for the corner generated by the vertical twisting and the horizontal twisting of the bridge.
During earthquake, the upper structure of the support can swing along with the spherical surface between the curved plate and the lower plate, and the bridge can only swing along the transverse direction due to the fact that the curved plate and the side face of the lower plate are limited, so that the transverse damping function is realized. And the horizontal both ends of hypoplastron have set up stop device, prevent that lateral displacement from transfiniting and taking place the roof beam that falls.
Preferably, the plane sliding plate and the top plane of the spherical crown lining plate are fixed and positioned into a whole, the upper spherical sliding plate and the top concave surface of the curved plate are fixed into a whole and form an upper spherical sliding pair with the spherical surface at the bottom of the spherical crown lining plate, and the lower spherical sliding plate and the bottom curved surface of the curved plate are fixed into a whole and form a lower spherical sliding pair with the top concave surface of the lower plate. Preferably, a circle of sealing ring is embedded on the plane of the top of the spherical cap lining plate around the plane sliding plate.
Preferably, the material of the lower spherical sliding plate is different from that of the planar sliding plate and the upper spherical sliding plate, and the friction coefficient between the lower spherical sliding plate and the lower plate is greater than that between the planar sliding plate and the upper plate and that between the upper spherical sliding plate and the spherical surface at the bottom of the spherical cap lining plate. Preferably, the planar sliding plate and the upper spherical sliding plate are made of modified ultra-high molecular weight polyethylene or modified polytetrafluoroethylene and lubricated by silicone grease, and the lower spherical sliding plate is made of modified polytetrafluoroethylene but not lubricated by silicone grease. The lower spherical surface sliding plate is made of different sliding plate materials from the plane sliding plate and the upper spherical surface sliding plate, the friction coefficient between the lower spherical surface sliding plate and the lower plate is large, and the damping and energy consumption effects are good.
Preferably, the upper surface and the lower surface of the lower spherical surface sliding plate are both spherical surfaces, and the concave surface at the top of the lower plate is a spherical surface matched with the lower surface of the lower spherical surface sliding plate.
Preferably, the longitudinal two sides of the top of the lower plate are provided with grooves, and the longitudinal bridge direction limiting structure is arranged in the grooves to longitudinally limit the curved plate.
Drawings
Fig. 1 is a schematic view of the transverse bridge of the present invention.
Fig. 2 is a schematic view of the longitudinal bridge of the present invention.
The labels in the figure are: the structure comprises an upper plate 1, a plane sliding plate 2, a sealing ring 3, a spherical cap lining plate 4, an upper spherical sliding plate 5, a curved plate 6, a lower spherical sliding plate 7, a lower plate 8, a transverse bridge limiting structure 9 and a longitudinal bridge limiting structure 10.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and 2, a large-span continuous beam is with support that has seismic isolation device includes upper plate 1, spherical crown welt 4, curved plate 6 and hypoplastron 8 from the top down in proper order, set up plane slide 2 and through setting up the cross bridge at upper plate 1 bottom surface and spacing to the both sides to the cross bridge of spherical crown welt 4 to limiting structure 9 between 1 bottom surface of upper plate and the 4 top planes of spherical crown welt, set up sphere slide 5 between 4 bottom sphere of spherical crown welt and the 6 top concave surfaces of curved plate, set up down sphere slide 7 between 6 bottom curved surfaces of curved plate and the 8 top concave surfaces of hypoplastron, it is spacing to the both sides to set up longitudinal bridge to limiting structure 10 on the hypoplastron 8 to the 6 longitudinal bridge of curved plate.
The plane slide 2 is fixed integrative with 4 top planes of spherical crown welt, go up spherical slide 5 and fixed as an organic whole in 6 top concave surfaces of curved plate and form spherical sliding pair with 4 bottom spherical surfaces of spherical crown welt, spherical slide 7 is fixed as an organic whole and forms spherical sliding pair down with 8 top concave surfaces of hypoplastron down with the 6 bottom curved surfaces of curved plate down. And a circle of sealing ring 3 is embedded on the plane of the top of the spherical cap lining plate 4 around the plane sliding plate 2.
The material of the lower spherical sliding plate 7 is different from that of the plane sliding plate 2 and the upper spherical sliding plate 5, and the friction coefficient between the lower spherical sliding plate 7 and the lower plate 8 is larger than that between the plane sliding plate 2 and the upper plate 1 and that between the upper spherical sliding plate 5 and the spherical surface at the bottom of the spherical crown lining plate 4. The plane sliding plate 2 and the upper spherical surface sliding plate 5 are made of modified ultra-high molecular weight polyethylene or modified polytetrafluoroethylene and lubricated by silicone grease, and the lower spherical surface sliding plate 7 is made of modified polytetrafluoroethylene but not lubricated by silicone grease.
The upper and lower surfaces of the lower spherical sliding plate 7 are spherical surfaces, and the concave surface at the top of the lower plate 8 is a spherical surface matched with the lower surface of the lower spherical sliding plate 7.
The vertical both sides in 8 tops on hypoplastron set up the recess, longitudinal bridge is installed in the recess and is carried out vertical spacing to curved plate 6 to limit structure 10.

Claims (7)

1. The utility model provides a large-span continuous beam is with support that has seismic isolation device which characterized in that: from the top down includes upper plate (1), spherical crown welt (4), curved plate (6) and hypoplastron (8) in proper order, set up between upper plate (1) bottom surface and spherical crown welt (4) top plane planar slide (2) and through set up the crossbridge at upper plate (1) bottom surface and spacing to spherical crown welt (4) crossbridge to both sides to limit structure (9), set up between spherical crown welt (4) bottom sphere and curved plate (6) top concave surface sphere slide (5), set up down sphere slide (7) between curved plate (6) bottom curved surface and hypoplastron (8) top concave surface, it is spacing to both sides to set up longitudinal bridge to limit structure (10) on hypoplastron (8) to curved plate (6) longitudinal bridge.
2. The support with the shock insulation device for the large-span continuous beam according to claim 1, wherein: plane slide (2) and fixed an organic whole of locating of spherical crown welt (4) top plane, go up spherical slide (5) and curved plate (6) top concave surface fixed as an organic whole and with spherical crown welt (4) bottom sphere between form spherical sliding pair, spherical slide (7) and curved plate (6) bottom curved surface fixed as an organic whole down and with down form spherical sliding pair down between board (8) top concave surface.
3. The support with the vibration isolation device for the large-span continuous beam according to claim 2, wherein: and a circle of sealing ring (3) is embedded around the plane sliding plate (2) on the plane of the top of the spherical crown lining plate (4).
4. The support with the shock insulation device for the large-span continuous beam according to claim 1, wherein: the material of the lower spherical sliding plate (7) is different from that of the plane sliding plate (2) and the upper spherical sliding plate (5), and the friction coefficient between the lower spherical sliding plate (7) and the lower plate (8) is larger than that between the plane sliding plate (2) and the upper plate (1) and that between the upper spherical sliding plate (5) and the spherical surface at the bottom of the spherical crown lining plate (4).
5. The support with the vibration isolation device for the large-span continuous beam according to claim 4, wherein: the plane sliding plate (2) and the upper spherical sliding plate (5) are made of modified ultra-high molecular weight polyethylene or modified polytetrafluoroethylene and lubricated by silicone grease, and the lower spherical sliding plate (7) is made of modified polytetrafluoroethylene but not lubricated by silicone grease.
6. The support with the shock insulation device for the large-span continuous beam according to claim 1, wherein: the upper surface and the lower surface of the lower spherical surface sliding plate (7) are spherical surfaces, and the concave surface at the top of the lower plate (8) is a spherical surface matched with the lower surface of the lower spherical surface sliding plate (7).
7. The support with the shock insulation device for the large-span continuous beam according to claim 1, wherein: the longitudinal two sides of the top of the lower plate (8) are provided with grooves, and the longitudinal bridge direction limiting structures (10) are installed in the grooves to longitudinally limit the curved plate (6).
CN201921292772.1U 2019-08-09 2019-08-09 Support with shock insulation device for large-span continuous beam Active CN210561694U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921292772.1U CN210561694U (en) 2019-08-09 2019-08-09 Support with shock insulation device for large-span continuous beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921292772.1U CN210561694U (en) 2019-08-09 2019-08-09 Support with shock insulation device for large-span continuous beam

Publications (1)

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CN210561694U true CN210561694U (en) 2020-05-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110396922A (en) * 2019-08-09 2019-11-01 成都市新筑路桥机械股份有限公司 A kind of support of the large-span continuous beam with earthquake isolating equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110396922A (en) * 2019-08-09 2019-11-01 成都市新筑路桥机械股份有限公司 A kind of support of the large-span continuous beam with earthquake isolating equipment

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