CN114457672A - A device that prevents toppling that is used for earthquake landslide to surge to bridge upper portion to strike - Google Patents
A device that prevents toppling that is used for earthquake landslide to surge to bridge upper portion to strike Download PDFInfo
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- CN114457672A CN114457672A CN202210231288.8A CN202210231288A CN114457672A CN 114457672 A CN114457672 A CN 114457672A CN 202210231288 A CN202210231288 A CN 202210231288A CN 114457672 A CN114457672 A CN 114457672A
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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
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Abstract
The invention discloses an anti-overturning device for the impact of earthquake landslide surge on the upper part of a bridge, which comprises a bridge floor, bridge piers and hinged supports, wherein the two sides of each bridge pier are connected with the bridge floor, the two sides of the central line between two adjacent bridge piers under the bridge floor are symmetrically connected with a side gear through a support, the two sides of the lower surface of each side gear are hinged with connecting rods, the other ends of the connecting rods connected in the same side gear are hinged to the positions below the hinged supports of the two adjacent bridge piers, a central gear is connected between the two symmetrical side gears through a support, and the central gear is meshed with the two side gears respectively. Compared with the prior art, the invention can prevent the overturning risk caused by the failure of the hinged support due to the overlarge lateral displacement of the pier.
Description
Technical Field
The invention relates to the technical field of bridge connection structures, in particular to an anti-overturning device for the impact of earthquake landslide surge on the upper part of a bridge.
Background
The earthquake in the mountainous area easily causes landslide, when a huge landslide body of the large landslide rushes into the water body at a high speed, the water body is excited to generate huge surge waves, the surge waves can rush to the embankment and the bridge, and the reflection and refraction can also occur, so that the whole water body has a very complex fluctuation phenomenon. The transverse waves and the landslide of the water body cause impurities such as sand, stone, soil and the like in water flow to cause the phenomenon of uneven water flow distribution and the like, transverse impact force can be generated on the bridge pier of the bridge, the bridge pier can resist the force in the water flow direction and cannot resist the transverse force easily due to the design of the bridge pier, and the risk of overturning can be caused due to the fact that the hinged support fails due to the fact that the lateral displacement of the bridge pier is too large.
Therefore, there is a need to provide an anti-overturn device for the impact of earthquake landslide surge on the upper part of the bridge, so as to solve the problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a device that prevents toppling that is used for earthquake landslide to surge to bridge upper portion to assault, includes the hinged-support that bridge floor, pier and pier both sides are connected with the bridge floor, wherein, the position bilateral symmetry of central line respectively is connected with a side gear, every through the support between two adjacent piers under the bridge floor the lower surface both sides of side gear articulate there is each connecting rod, connects in the same side gear the other end of connecting rod articulates respectively in the position of the hinged-support below of two adjacent piers.
Further, preferably, a central gear is connected between the two symmetrical side gears through a bracket, and the central gear is respectively meshed with the two side gears.
Preferably, a central bevel gear is coaxially fixed between the central gear and the bottom of the bridge deck, the plane where the central bevel gear and the central gear are located is staggered, side bevel gears are respectively arranged on two sides of the central bevel gear in the direction perpendicular to the side gears, the side bevel gears are connected with the bottom of the bridge deck through supports, and the side bevel gears are meshed with the central bevel gear.
Preferably, a rotating rod is fixed in a rotating shaft of each side bevel gear, and a resistance plate is connected to the lower part of the rotating rod connected to the same pair of symmetrical side bevel gears, and the resistance plate is inclined towards the water flow direction.
Further, as the preferred, the length can be changed through the extension rod with its slidable flexible, two extension rod upper portions through connecting axle fixed connection together.
Further, preferably, a pull rope is connected to a center position of the connecting shaft.
Further, preferably, the pulling rope is wound into a winding drum, the winding drum is positioned on one side of the pier on one side, which is far away from the connecting shaft connected with the pulling rope, and the winding drum is rotatably connected with a support under the bridge deck.
Further, preferably, the winding drum is concentrically connected with a rotating handle, and the rotating handle extends out of one side edge of the bridge floor.
Preferably, a ratchet wheel is concentrically fixed on a rotating shaft of the winding drum, one side of the ratchet wheel is provided with a ratchet which is rotatably connected with the bridge deck support, and the ratchet wheel can limit the winding drum to rotate towards the direction of lengthening the pull rope when rotating to be attached to the ratchet wheel;
and one side of the ratchet is provided with a spring which enables the ratchet to rotate towards the direction of jointing with the ratchet wheel.
Further, preferably, a push rod is hinged to the ratchet, the other end of the push rod is attached to a surface, close to the push rod, of the pier, perpendicular to the water flow direction, and the length of the push rod enables the bridge deck and the pier to be just attached to the ratchet in a normal state.
Compared with the prior art, the invention has the beneficial effects that:
when a river generates landslide and surge, and the water flow contains impurities such as sand, stone, soil and the like to cause transverse thrust perpendicular to the water flow direction to the pier, the pier is subjected to force perpendicular to the water flow direction and is dislocated with the bridge floor to be close to the direction of the push rod, the push rod pushes the ratchet to remove the limitation on the ratchet, so that the resistance plate can descend under the action of gravity to drive the side bevel gears to rotate through the resistance of the water flow, the center bevel gears and the center gears can be driven to further drive the side gears to rotate through the rotation of the side bevel gears, the connecting rods can apply inward tensile force to the upper part of the pier, and the situation that the hinged support fails to bring overturning risks due to overlarge lateral displacement of the pier is prevented.
Drawings
FIG. 1 is a schematic view of the overall installation structure of an anti-overturning device for the impact of earthquake landslide and surge on the upper part of a bridge;
FIG. 2 is a schematic view of the structure of the anti-overturn device for the impact of earthquake landslide and surge on the upper part of the bridge;
FIG. 3 is a schematic structural view of the ratchet;
in the figure: 1. a bridge deck; 2. a bridge pier; 3. a hinged support; 4. a side gear; 5. a connecting rod; 6. a sun gear; 7. a central bevel gear; 8. a side bevel gear; 9. a rotating rod; 91. an extension rod; 92. a connecting shaft; 10. a resistance plate; 11. pulling a rope; 12. a reel; 13. a handle is rotated; 14. a ratchet wheel; 15. a ratchet; 16. a spring; 17. a push rod.
Detailed Description
Referring to fig. 1 and 2, in an embodiment of the present invention, an anti-overturning device for an earthquake, landslide and surge impact on an upper portion of a bridge includes a bridge deck 1, piers 2, and hinged supports 3 connected to both sides of the piers 2 and the bridge deck 1, wherein a side gear 4 is symmetrically connected to both sides of a center line between two adjacent piers 2 under the bridge deck 1 through a bracket, each connecting rod 5 is hinged to both sides of a lower surface of each side gear 4, and the other ends of the connecting rods 5 connected to the same side gear 4 are hinged to positions under the hinged supports 3 of the two adjacent piers 2.
In this embodiment, there are two symmetrical side gears 4 through leg joint have a sun gear 6, sun gear 6 meshes with two side gears 4 respectively, can drive the side gear 4 rotation of its both sides through rotating sun gear 6 to can make connecting rod 5 apply inboard pulling force to pier 2 upper portion, prevent that the lateral displacement of pier 2 is too big to lead to hinged-support 3 to lose efficacy and bring the risk of toppling.
In this embodiment, a central bevel gear 7 is coaxially fixed between the central gear 6 and the bottom of the bridge deck 1, the plane where the central bevel gear 7 and the central gear 6 are located is staggered, side bevel gears 8 are respectively arranged on two sides of the central bevel gear 7 in the direction perpendicular to the side gears 4, the side bevel gears 8 are connected with the bottom of the bridge deck 1 through a support, and the side bevel gears 8 are engaged with the central bevel gear 7, that is, the central bevel gear 7 and the central gear 6 can be driven by the rotation of the side bevel gears 8 to further drive the side gears 4 to rotate.
In this embodiment, a rotating rod 9 is fixed in a rotating shaft of each side bevel gear 8, a resistance plate 10 is connected to the lower part of the rotating rod 9 connected to the same pair of symmetrical side bevel gears 8, and the resistance plate 10 is a plate inclined towards the water flow direction.
In this embodiment, the length of the rotary rod 9 can be changed by the extension rod 91 which can slide and stretch, the upper portion of the extension rod 91 is fixedly connected together by the connecting shaft 92, the resistance plate 10 is connected to the lower portion of the two extension rods 91, the resistance plate 10 is located above the highest water level of the river when the extension rod 91 extends to the top, and the resistance plate 10 is located below the highest low level of the river when the extension rod 91 extends to the top.
In this embodiment, a pull rope 11 is connected to a center position of the connecting shaft 92.
In this embodiment, the pulling rope 11 is wound into the winding drum 12, the winding drum 12 is located on one side of the pier far away from the connecting shaft 92 connected with the pulling rope 11, and the winding drum 12 is rotatably connected with the support below the bridge deck 1.
In this embodiment, the winding drum 12 is concentrically connected with a rotating handle 13, and the rotating handle 13 extends out of one side of the bridge deck 1, so that the rotating handle 13 can be rotated to adjust the height of the resistance plate 10.
Referring to fig. 3, in this embodiment, a ratchet 14 is concentrically fixed to a rotating shaft of the winding drum 12, a ratchet 15 rotatably connected to the support of the bridge deck 1 is disposed on one side of the ratchet 14, and when the ratchet 15 rotates to be attached to the ratchet 14, the winding drum 12 can be limited from rotating in the direction of the lengthening stay 11;
a spring 16 is provided on one side of the ratchet 15 to rotate in a direction to abut against the ratchet 14.
In this embodiment, a push rod 17 is hinged in the ratchet 15, the other end of the push rod 17 is attached to a surface, which is perpendicular to the water flow direction, of the pier 2 close to the push rod 17, and the length of the push rod 17 enables the ratchet 15 to be attached to the ratchet 14 just under the normal state of the bridge deck 1 and the pier 2. That is, when the pier 2 is displaced from the bridge deck 1 by a force perpendicular to the water flow direction and approaches the push rod 17, the push rod 17 pushes the ratchet 15 to release the ratchet 14, so that the resistance plate 10 can be lowered by gravity to rotate the side bevel gear 8 by the resistance of the water flow.
In the implementation, in the initial state, the pull rope 11 is wound in the winding drum 12, the resistance plate 10 is located at the highest position and is not contacted with the water surface, when the river generates landslide and surge, and the water flow contains impurities such as sand, stone, soil and the like to cause the transverse thrust which is vertical to the water flow direction and is applied to the bridge pier 2, the pier 2 is dislocated with the bridge floor 1 and is close to the push rod 17 direction by the force vertical to the water flow direction, the push rod 17 pushes the ratchet 15 to release the limitation of the ratchet 14, the resistance plate 10 can descend under the gravity action, the side bevel gear 8 is driven to rotate by the resistance of the water flow, the central bevel gear 7 and the central gear 6 can be driven by the rotation of the side bevel gear 8 to drive the side gear 4 to rotate, therefore, the connecting rod 5 can apply inward tensile force to the upper part of the pier 2, and the hinged support 3 is prevented from failing to bring overturning risks due to overlarge lateral displacement of the pier 2.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. The utility model provides a device of preventing toppling that is used for earthquake landslide to surge to bridge upper portion to assault, includes hinged-support (3) that bridge floor (1), pier (2) and pier (2) both sides are connected with bridge floor (1), its characterized in that, the position bilateral symmetry of central line respectively is connected with a side gear (4), every through the support between two adjacent pier (2) under bridge floor (1) the lower surface both sides of side gear (4) articulate there are each connecting rod (5), connects in the same side gear (4) the other end of connecting rod (5) articulates respectively in the position of hinged-support (3) below of two adjacent pier (2).
2. The overturn preventing device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 1, wherein a central gear (6) is connected between the two symmetrical side gears (4) through a bracket, and the central gear (6) is respectively meshed with the two side gears (4).
3. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 2, wherein a central bevel gear (7) is coaxially fixed between the central gear (6) and the bottom of the bridge deck (1), the central bevel gear (7) is staggered with the plane where the central gear (6) is located, side bevel gears (8) are respectively arranged on two sides of the central bevel gear (7) in the direction perpendicular to the side gears (4), the side bevel gears (8) are connected with the bottom of the bridge deck (1) through supports, and the side bevel gears (8) are meshed with the central bevel gear (7).
4. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 3, wherein a rotating rod (9) is fixed in the rotating shaft of each side bevel gear (8), a resistance plate (10) is connected below the rotating rods (9) connected in the same pair of symmetrical side bevel gears (8), and the resistance plate (10) is a plate inclined towards the water flow direction.
5. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge, according to claim 4, characterized in that the length of the rotating rod (9) can be changed by an extension rod (91) which can slide and stretch, and the upper parts of the two extension rods (91) are fixedly connected together through a connecting shaft (92).
6. The overturn preventing device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 5, wherein a pull rope (11) is connected to the center position of the connecting shaft (92).
7. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 1, wherein the pulling rope (11) is wound into a reel (12), the reel (12) is located on one side of the pier far away from the connecting shaft (92) connected with the pulling rope (11), and the reel (12) is rotatably connected with a support under the bridge deck (1).
8. The overturn preventing device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 7, characterized in that the drum (12) is concentrically connected with a rotating handle (13), and the rotating handle (13) extends out of one side of the bridge deck (1).
9. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 7, wherein a ratchet wheel (14) is concentrically fixed on the rotating shaft of the winding drum (12), one side of the ratchet wheel (14) is provided with a ratchet tooth (15) which is rotatably connected with a support of the bridge deck (1), and the ratchet tooth (15) can limit the winding drum (12) to rotate towards the direction of the lengthening stay rope (11) when rotating to be attached to the ratchet wheel (14);
and a spring (16) which enables the ratchet (15) to rotate towards the attaching direction with the ratchet wheel (14) is arranged on one side of the ratchet.
10. The overturn prevention device for the impact of earthquake landslide and surge on the upper part of the bridge according to claim 9, characterized in that a push rod (17) is hinged in the ratchet teeth (15), the other end of the push rod (17) is fitted into the surface of the bridge pier (2) close to the push rod, which is perpendicular to the water flow direction, and the length of the push rod (17) is such that the ratchet teeth (15) are fitted with the ratchet wheel (14) under the normal state of the bridge deck (1) and the bridge pier (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231288.8A CN114457672B (en) | 2022-03-10 | 2022-03-10 | Anti-overturning device for impact of earthquake landslide surge on upper part of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231288.8A CN114457672B (en) | 2022-03-10 | 2022-03-10 | Anti-overturning device for impact of earthquake landslide surge on upper part of bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114457672A true CN114457672A (en) | 2022-05-10 |
| CN114457672B CN114457672B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210231288.8A Active CN114457672B (en) | 2022-03-10 | 2022-03-10 | Anti-overturning device for impact of earthquake landslide surge on upper part of bridge |
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| Country | Link |
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| CN (1) | CN114457672B (en) |
Citations (11)
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|---|---|---|---|---|
| JPH10298923A (en) * | 1997-04-25 | 1998-11-10 | Takara Giken Kk | Fixture of strain parts for preventing bridge fall |
| KR20010097528A (en) * | 2000-04-24 | 2001-11-08 | 김재관 | Mechanical Seismic Load Transmitting Unit For Multi-Span Continuous Bridges |
| JP2006307444A (en) * | 2005-04-26 | 2006-11-09 | Chiyoda Engineering Consultants Co Ltd | Seismically retrofitting structure for existing bridge |
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| CN205369003U (en) * | 2016-01-29 | 2016-07-06 | 石家庄铁道大学 | Subtract shock insulation structure with from reset function |
| CN106223186A (en) * | 2016-07-25 | 2016-12-14 | 江苏科技大学 | A kind of bridge earthquake resistance structure of additional wire connection damper device |
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| CN112323609A (en) * | 2020-11-26 | 2021-02-05 | 中国人民解放军陆军工程大学 | Flood control is with anti-water wing section bridge stabilising arrangement |
| CN112458874A (en) * | 2020-11-05 | 2021-03-09 | 安徽建筑大学 | Multistage shockproof antidumping aggregate unit of bridge |
| CN112942051A (en) * | 2021-02-24 | 2021-06-11 | 赵紫荣 | Highway bridge with anti transverse force |
-
2022
- 2022-03-10 CN CN202210231288.8A patent/CN114457672B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10298923A (en) * | 1997-04-25 | 1998-11-10 | Takara Giken Kk | Fixture of strain parts for preventing bridge fall |
| KR20010097528A (en) * | 2000-04-24 | 2001-11-08 | 김재관 | Mechanical Seismic Load Transmitting Unit For Multi-Span Continuous Bridges |
| JP2006307444A (en) * | 2005-04-26 | 2006-11-09 | Chiyoda Engineering Consultants Co Ltd | Seismically retrofitting structure for existing bridge |
| KR100788941B1 (en) * | 2007-06-25 | 2007-12-27 | 남궁은 | The collapse preventing apparatus of bridge using wire-ropes |
| CN205369003U (en) * | 2016-01-29 | 2016-07-06 | 石家庄铁道大学 | Subtract shock insulation structure with from reset function |
| CN106223186A (en) * | 2016-07-25 | 2016-12-14 | 江苏科技大学 | A kind of bridge earthquake resistance structure of additional wire connection damper device |
| CN106894349A (en) * | 2017-05-13 | 2017-06-27 | 林再颐 | A kind of bridge of high-mechanic intensity |
| CN208395650U (en) * | 2018-07-02 | 2019-01-18 | 李卓航 | A kind of shock-absorbing bridge support structure |
| CN112458874A (en) * | 2020-11-05 | 2021-03-09 | 安徽建筑大学 | Multistage shockproof antidumping aggregate unit of bridge |
| CN112323609A (en) * | 2020-11-26 | 2021-02-05 | 中国人民解放军陆军工程大学 | Flood control is with anti-water wing section bridge stabilising arrangement |
| CN112942051A (en) * | 2021-02-24 | 2021-06-11 | 赵紫荣 | Highway bridge with anti transverse force |
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| Title |
|---|
| 王武高: "公路桥梁试验检测养护管理", 山西建筑, no. 15 * |
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