CN113389174A - Protection device for building bridge - Google Patents
Protection device for building bridge Download PDFInfo
- Publication number
- CN113389174A CN113389174A CN202110776154.XA CN202110776154A CN113389174A CN 113389174 A CN113389174 A CN 113389174A CN 202110776154 A CN202110776154 A CN 202110776154A CN 113389174 A CN113389174 A CN 113389174A
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- pier
- force
- foundation
- fixing ring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge protection. The purpose is to provide a protective device for a building bridge, which comprises a pier foundation buffer mechanism arranged at the pier foundation of a foundation pier and a pier body buffer mechanism arranged on a foundation pier body positioned at the water surface; the pier body buffering mechanism comprises a buffering cylinder which is sleeved and fixed on a pier body, the buffering cylinder comprises an upper fixing ring and a lower fixing ring which are fixed on the pier body, and a force unloading roller which is arranged between the upper fixing ring and the lower fixing ring and is arranged outside the pier body, the force unloading roller is provided with a plurality of layers from inside to outside, and a plurality of overflowing holes are uniformly distributed in the force unloading roller; the upper end and the lower end of the force unloading roller are connected with the upper fixing ring and the lower fixing ring to form rotating fit. The invention can effectively relieve the buffering of water flow on the pier body, reduce the water erosion effect, avoid the pier body of the foundation pier from being damaged by water erosion and improve the overall safety of the foundation pier and the bridge.
Description
Technical Field
The invention relates to the field of bridge protection, in particular to a protection device for a building bridge.
Background
The bridge foundation pier is a supporting foundation of a bridge main body structure, and the stability of the bridge foundation pier has decisive influence on the overall performances of the bridge such as earthquake resistance, pressure resistance, load bearing and the like; one significant difference between bridge foundation piers and traditional foundation piles is that the bridge foundation piers are subjected to water flow impact for a long time, so that the water erosion effect is large, and the anti-scouring and water erosion resistance of the bridge foundation piers need to be enhanced. At present, the traditional mode is to improve the strength of the foundation pier and enhance the water erosion resistance of the foundation pier by improving the pouring material of the foundation pier, but is limited by the development progress of the material formula, and the mode has not been remarkably developed in recent years. In the other mode, the foundation pier is supported in a strengthening mode through reinforcing parts such as various support rods, support frames and the like, but in the mode, as the reinforcing parts also need to be provided with a foundation, as long as the water erosion resistance of the installation foundation cannot be solved, the current situation that the anti-scouring performance of the foundation pier is insufficient cannot be fundamentally improved. In addition, in a part of turbulent river channels, due to the fact that spray is heavy and impact is large, stability of the foundation pier is improved only through a reinforcing supporting mode, and the obtained effect is not ideal. Therefore, how to reasonably guide and buffer water flow impact is a big problem in the field.
Disclosure of Invention
The invention aims to provide a protection device for a building bridge, which can effectively resist water flow scouring.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a protection device for a building bridge comprises a pier foundation buffer mechanism arranged at the pier foundation of a foundation pier and a pier body buffer mechanism arranged on a foundation pier body positioned at the water surface;
the pier body buffering mechanism comprises a buffering cylinder which is sleeved and fixed on a pier body, the buffering cylinder comprises an upper fixing ring and a lower fixing ring which are fixed on the pier body, and a force unloading roller which is arranged between the upper fixing ring and the lower fixing ring and is arranged outside the pier body, the force unloading roller is provided with a plurality of layers from inside to outside, and a plurality of overflowing holes are uniformly distributed in the force unloading roller; the upper end and the lower end of the force unloading roller are connected with the upper fixing ring and the lower fixing ring to form rotating fit; the pier body buffer mechanism also comprises a stress body which is arranged on the force unloading roller and drives the force unloading roller to rotate when the force unloading roller is impacted by water flow.
Preferably, the rotation directions of the two adjacent layers of the force unloading rollers are opposite.
Preferably, the overflowing hole is in a horizontally arranged water drop shape and gradually becomes smaller from one end to the other end; the stressor is constituted by the flowbore itself.
Preferably, the overflowing hole is formed by bending the cutting part inwards after a C-shaped cut is cut on the side wall of the force discharging roller.
Preferably, the flow hole drop-shaped heads on the two adjacent layers of the unloading rollers face opposite directions.
Preferably, the upper fixing ring and the lower fixing ring both comprise ring bodies, and one surfaces of the ring bodies, which are opposite to the force unloading roller, are provided with step shoulders; the number of the steps corresponds to the number of the layers of the force unloading roller; the upper end and the lower end of the force unloading roller are arranged on a step vertical face of the step shoulder through bearings.
Preferably, the edge of the main body part of the ring body, which is opposite to the end of the unloading roller, is provided with a slant protecting plate which inclines towards the unloading roller.
Preferably, pier body buffer gear still including evenly set up a plurality of enhancement connecting rods in buffer cylinder week side, the upper and lower both ends of strengthening the connecting rod respectively with the lateral wall rigid coupling of last retainer plate and lower retainer plate.
Preferably, the pier foundation buffer mechanism comprises a protection net cage in a circular truncated cone shape, and the protection net cage sequentially comprises a top ring, a surrounding net and a ground ring from top to bottom; the top ring is fixedly arranged on the pier body in an annular shape, and the ground ring is fixedly arranged on a river bed around the pier foundation in an annular shape and is fixed with the river bed through an anchor rod; a plurality of inclined connecting rods are uniformly arranged between the ground ring and the top ring in an annular shape around the pier body, and two ends of each inclined connecting rod are fixedly connected with the top ring and the ground ring respectively; the enclosure net is enclosed and leaned against the outside of the inclined connecting rod to form the side wall of the protective net box; the protective net cage is filled with buffer filler.
Preferably, the buffer filler comprises a rubble layer, a large stone layer and a sand layer from top to bottom in sequence.
The beneficial effects of the invention are concentrated and expressed as follows: can effectually alleviate the buffering of rivers to the mound body, reduce the water erosion effect, avoid the mound body of basic mound to be corroded by water and destroy, improve the holistic security of basic mound and bridge. Specifically, in the using process, the pier base buffering mechanism is used for protecting the root part of the foundation pier, and the pier body buffering mechanism is used for protecting a section of the foundation pier, which is positioned on a critical surface. Because the water flow is large in fluctuation and strong in impact near the critical surface (namely the water surface), when impacting the pier body of the foundation pier, the water flow is firstly contacted with the outermost unloading roller, the unloading roller blocks the direct impact of the water flow on the pier body on one hand, and on the other hand, the impact can be converted into the rotation of the unloading roller, and finally the impact force is buffered and released, so that the effects of protecting the pier body and the unloading roller are achieved. The invention adopts the design of the multilayer unloading roller, and the multilayer unloading roller is provided with the overflowing holes, water flow is gradually dispersed through the overflowing holes on the multilayer unloading roller, impact force is gradually buffered and discharged, the action of dispersed unloading force is realized, the resultant impact of large water flow is converted into a plurality of strands of dispersed impact of small water flow, and the impact resistance of a pier body is fundamentally improved. In addition, through the reverse rotation between the adjacent force-discharging rollers, the bending turbulence of the impact water flow in the flowing process is realized, the consumption of the water flow impact force is further realized, and the influence of the water flow impact on the pier body is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a pier body cushioning mechanism;
FIG. 3 is a schematic view of the interior structure of the pier buffering mechanism;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a schematic diagram of the structure of an overflow aperture in a preferred embodiment.
Detailed Description
As shown in fig. 1 to 5, a protection device for a building bridge comprises a pier foundation buffer mechanism arranged at the pier foundation of a foundation pier 1 and a pier body buffer mechanism arranged on the pier body of the foundation pier 1 positioned at the water surface. Pier foundation buffer gear is used for protecting the basis of the root of basis mound 1, and pier body buffer gear is used for protecting near the pier body critical plane (that is to say the surface of water) of basis mound 1 to reduce water impact, delay the water erosion effect, protect the basis mound.
Pier base buffer gear is including the protection box with a net that is the round platform form, protection box with a net intussuseption is filled with buffering filler 17, and under the ordinary condition, buffering filler 17 includes rubble layer, big stone layer and sand layer from top to bottom in proper order.
The protective net box comprises a top ring 12, a containment net 13 and a ground ring 14 which are arranged from top to bottom in sequence. The top ring 12 is fixed on the pier body in an annular shape, and the ground ring 14 is fixed on the riverbed around the pier foundation in an annular shape and is fixed with the riverbed through the anchor rod 15. A plurality of inclined connecting rods 16 are uniformly arranged between the ground ring 14 and the top ring 12 in an annular shape around the pier body, and two ends of each inclined connecting rod 16 are fixedly connected with the top ring 12 and the ground ring 14 respectively so as to enhance the integral structural strength of the protective net cage. The enclosure net 13 is enclosed and leaned on the outside of the inclined connecting rod 16 to form the side wall of the protective net box. Through the pier foundation buffer mechanism, the invention can effectively prevent water flow from directly carrying out erosive scouring on the pier foundation.
The most important difference of the invention lies in the arrangement mode of the pier body buffering mechanism, specifically, the pier body buffering mechanism comprises a buffering cylinder 2 which is sleeved and fixed on the pier body, the buffering cylinder 2 comprises an upper fixing ring 3 and a lower fixing ring 4 which are fixed on the pier body, the distance between the upper fixing ring 3 and the lower fixing ring 4 is usually about 1-2 meters, and at least the part of the buffering cylinder 2 which exceeds 2/3 is sunk in the water body. Certainly, considering the influence of seasonal changes on the height of the water body, a plurality of pier body buffering mechanisms can be additionally arranged within a certain range so as to adapt to the protection requirements of the pier bodies near the water surface under different water levels. The invention mainly buffers and discharges water flow impact and is provided with a force-discharging roller 5 arranged outside the pier body between the upper fixing ring 3 and the lower fixing ring 4.
As shown in fig. 2, 3 and 4, the force-discharging roller 5 is provided with a plurality of layers from inside to outside, and a plurality of overflowing holes 6 are uniformly distributed on the force-discharging roller 5. One part of water flow impact directly acts on the outer layer force unloading roller 5 to push the force unloading roller 5 to rotate, the other part of the water flow impact can pass through the flow hole 6 to push the inner layer force unloading roller 5 to rotate, and the like. The upper end and the lower end of the force unloading roller 5 are connected with the upper fixing ring 3 and the lower fixing ring 4 to form rotating fit. To facilitate the installation of the force-discharging roller 5, as shown in fig. 4, typically, the upper and lower stationary rings 3, 4 each comprise a ring body, the side of which opposite the force-discharging roller 5 is provided with a stepped shoulder 8. The number of the steps of the step shoulder 8 corresponds to the number of the layers of the force unloading roller 5. The upper end and the lower end of the force-discharging roller 5 are arranged on the step elevation of a step shoulder 8 through a bearing 9, and the edge of the opposite end of the main body part of the ring body and the force-discharging roller 5 is provided with a slant protecting plate 10 which inclines towards the force-discharging roller 5.
In addition, the pier body buffer mechanism of the invention also comprises a stress body which is arranged on the unloading roller 5 and drives the unloading roller 5 to rotate when being impacted by water flow, wherein the stress body is arranged on the unloading roller 5 and converts the impact force of the water flow into the rotational driving force of the unloading roller 5, and the specific forms are more, for example: it can be a vane-like structure arranged on the force-discharging roller 5, for example, a plurality of vertical sheet-like blades are arranged on the outer surface of the Xieli roller 5; or on the surface of the force-discharging roller 5, a vertical through groove is formed by bending the wall of the force-discharging roller 5, and a stress body is formed at a convex part between the through grooves. In the simplest case, as shown in fig. 2, the overflow opening 6 can also be in the form of a transversely disposed drop which tapers from one end to the other, the flow-inducing body being formed by the overflow opening 6 itself. When water flow impacts the cylinder wall of the unloading roller 5, the water flow passing performance of the small end of the overflowing hole 6 is poor, the stress is larger, the water flow passing performance of the large end of the overflowing hole is strong, the stress is smaller, and then the bearing force difference is utilized to form the rotation driving force for the unloading roller 5. As shown in fig. 5, the overflowing hole 6 is formed by bending the cutting part 7 inward after cutting a "C" shaped cut on the side wall of the force-discharging roller 5.
In the using process, the root of the foundation pier 1 is protected by the pier foundation buffer mechanism, and a section of the foundation pier on a critical surface is protected by the pier body buffer mechanism. Because the water flow is large in fluctuation and strong in impact near the critical surface (namely the water surface), when impacting the pier body of the foundation pier 1, the critical surface is firstly contacted with the outermost unloading roller 5, the unloading roller 5 blocks the direct impact of the water flow on the pier body on one hand, and on the other hand, the impact can be converted into the rotation of the unloading roller, and finally the impact force is buffered and released, so that the effects of protecting the pier body and the unloading roller 5 are achieved. The invention adopts the design of the multilayer unloading roller 5, and the multilayer unloading roller 5 is provided with the overflowing holes 6, water flow is gradually dispersed through the overflowing holes on the multilayer unloading roller 5, the impact force is gradually buffered and discharged, the action of dispersed unloading force is realized, the resultant impact of large water flow is converted into a plurality of strands of dispersed impact of small water flow, and the impact resistance of the pier body is fundamentally improved. The overflowing hole 6 has the overflowing dispersion effect on water flow, and has the stress body effect of converting water flow impact into rotary driving force.
Of course, in order to further improve the effect of the buffer cylinder 2, it is better to make the rotation directions of the two adjacent layers of the unloading roller 5 opposite. Through the reverse rotation between the adjacent unloading roller 5, the bending turbulent flow of the impact water flow in the flowing process is realized, the consumption of the water flow impact force is further realized, and the influence of the water flow impact on the pier body is reduced. Under the condition that the overflowing holes 6 are used as stress bodies, the directions of the drop-shaped heads of the overflowing holes 6 on the two adjacent layers of the unloading rollers 5 are opposite, and the reverse rotation of the two adjacent unloading rollers 5 can be realized. Finally, in order to improve the stability between retainer plate 3 and the lower retainer plate 4, also be exactly the holistic stability of buffer cylinder 2, pier body buffer gear is still including evenly setting up a plurality of root reinforcing connecting rod 11 in buffer cylinder 2 week sides, reinforcing connecting rod 11's upper and lower both ends respectively with the lateral wall rigid coupling of last retainer plate 3 and lower retainer plate 4.
Claims (10)
1. The utility model provides a protector of building bridge which characterized in that: comprises a pier foundation buffer mechanism arranged at the pier foundation of the foundation pier (1) and a pier body buffer mechanism arranged on the pier body of the foundation pier (1) positioned at the water surface;
the pier body buffering mechanism comprises a buffering cylinder (2) which is sleeved and fixed on a pier body, the buffering cylinder (2) comprises an upper fixing ring (3) and a lower fixing ring (4) which are fixed on the pier body, and a force unloading roller (5) which is arranged between the upper fixing ring (3) and the lower fixing ring (4) and is arranged outside the pier body, the force unloading roller (5) is provided with a plurality of layers from inside to outside, and a plurality of overflowing holes (6) are uniformly distributed in the force unloading roller (5); the upper end and the lower end of the force-unloading roller (5) are connected with the upper fixing ring (3) and the lower fixing ring (4) to form rotating fit; the pier body buffer mechanism also comprises a stress body which is arranged on the force unloading roller (5) and drives the force unloading roller (5) to rotate when the force unloading roller is impacted by water flow.
2. The device for protecting a building bridge of claim 1, wherein: the rotation directions of the two adjacent layers of the force unloading rollers (5) are opposite.
3. The bridge protection device according to claim 2, wherein: the overflowing hole (6) is in a horizontally arranged water drop shape and gradually becomes smaller from one end to the other end; the stress body is formed by an overflowing hole (6) per se.
4. The device for protecting a building bridge of claim 3, wherein: the overflowing hole (6) is formed by bending a cutting part (7) inwards after a C-shaped cut is cut on the side wall of the force discharging roller (5).
5. The device for protecting a building bridge of claim 4, wherein: the directions of the water drop-shaped heads of the overflowing holes (6) on the two adjacent layers of the unloading rollers (5) are opposite.
6. The device for protecting a building bridge of claim 5, wherein: the upper fixing ring (3) and the lower fixing ring (4) both comprise ring bodies, and one surfaces of the ring bodies, which are opposite to the force unloading roller (5), are provided with stepped shoulders (8); the number of stages of the step shoulder (8) corresponds to the number of layers of the force unloading roller (5); the upper end and the lower end of the force-unloading roller (5) are arranged on the step vertical surface of the step shoulder (8) through a bearing (9).
7. The device for protecting a building bridge of claim 6, wherein: the edge of the main body part of the ring body and the opposite end of the force-discharging roller (5) is provided with an inclined guard plate (10) which inclines towards the force-discharging roller (5).
8. The device for protecting a building bridge of claim 7, wherein: pier body buffer gear still including evenly set up a plurality of root reinforcing connecting rod (11) in buffer cylinder (2) week side, reinforcing connecting rod (11) the upper and lower both ends respectively with the lateral wall rigid coupling of last retainer plate (3) and lower retainer plate (4).
9. The device for protecting a building bridge of claim 8, wherein: the pier foundation buffer mechanism comprises a protective net cage in a circular truncated cone shape, and the protective net cage sequentially comprises a top ring (12), a containment net (13) and a ground ring (14) from top to bottom; the top ring (12) is fixedly arranged on the pier body in an annular shape, and the ground ring (14) is fixedly arranged on a river bed around the pier foundation in an annular shape and is fixed with the river bed through an anchor rod (15); a plurality of inclined connecting rods (16) are uniformly arranged between the ground ring (14) and the top ring (12) in an annular shape around the pier body, and two ends of each inclined connecting rod (16) are fixedly connected with the top ring (12) and the ground ring (14) respectively; the enclosure net (13) is enclosed and leaned against the inclined connecting rod (16) to form the side wall of the protective net box; the protective net cage is filled with buffer filler (17).
10. The bridge protection device according to claim 9, wherein: the buffer filler (17) sequentially comprises a rubble layer, a large stone layer and a sand layer from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776154.XA CN113389174B (en) | 2021-07-09 | 2021-07-09 | Protection device for building bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776154.XA CN113389174B (en) | 2021-07-09 | 2021-07-09 | Protection device for building bridge |
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| CN113389174A true CN113389174A (en) | 2021-09-14 |
| CN113389174B CN113389174B (en) | 2022-12-09 |
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| CN202110776154.XA Active CN113389174B (en) | 2021-07-09 | 2021-07-09 | Protection device for building bridge |
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Cited By (3)
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| CN114214975A (en) * | 2022-01-12 | 2022-03-22 | 广州市鲁班建筑科技集团股份有限公司 | Pier repairing method and pier protection structure |
| CN114635391A (en) * | 2022-03-29 | 2022-06-17 | 长沙理工大学 | Pier protector and pier protection system |
| CN114635346A (en) * | 2022-03-10 | 2022-06-17 | 应急管理部国家自然灾害防治研究院 | Anti-beam-falling device used in ice water area when earthquake landslide surge impacts bridge and installation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114214975A (en) * | 2022-01-12 | 2022-03-22 | 广州市鲁班建筑科技集团股份有限公司 | Pier repairing method and pier protection structure |
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| CN114635346A (en) * | 2022-03-10 | 2022-06-17 | 应急管理部国家自然灾害防治研究院 | Anti-beam-falling device used in ice water area when earthquake landslide surge impacts bridge and installation method |
| CN114635346B (en) * | 2022-03-10 | 2023-08-22 | 应急管理部国家自然灾害防治研究院 | Beam falling prevention device used for bridge impact caused by earthquake landslide surge in ice water area and installation method |
| CN114635391A (en) * | 2022-03-29 | 2022-06-17 | 长沙理工大学 | Pier protector and pier protection system |
| CN114635391B (en) * | 2022-03-29 | 2024-02-20 | 长沙理工大学 | Pier protector and pier protection system |
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| CN113389174B (en) | 2022-12-09 |
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