CN115538341A - Falling rock impact prevention device for bridge - Google Patents
Falling rock impact prevention device for bridge Download PDFInfo
- Publication number
- CN115538341A CN115538341A CN202211153566.9A CN202211153566A CN115538341A CN 115538341 A CN115538341 A CN 115538341A CN 202211153566 A CN202211153566 A CN 202211153566A CN 115538341 A CN115538341 A CN 115538341A
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- Prior art keywords
- pier
- steel sheet
- elastic
- cover
- buffer layer
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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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
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- 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)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a rockfall impact prevention device for a bridge, and belongs to the technical field of bridge protection. The anti-collision device comprises an elastic protective sleeve sleeved on the outer side of a pier, wherein an anti-collision sleeve is sleeved on the outer side of the elastic protective sleeve, and an anti-collision guide structure used for enabling falling rocks to move towards two sides of the pier is arranged on one side, facing a mountain, of the anti-collision sleeve. Anticollision guide structure includes that cross sectional shape is the steel sheet of V font, the outside of steel sheet is provided with elastic buffer layer, the inboard of steel sheet is provided with several supporting beam that are the V font from last to down, the tip of elastic buffer layer, steel sheet and supporting beam all with crashproof cover fixed connection. Falling the stone under crashproof guide structure's guide effect, through the downward continuation motion from the side of pier to avoid falling the positive striking pier of stone, prevent that falling the stone from piling up, can reduce the impact force that the pier received moreover, further guarantee pier structure safety. And need not clear up falling rocks, practice thrift manpower and materials, the security is higher.
Description
Technical Field
The invention belongs to the technical field of bridge protection devices, and particularly relates to a falling rock impact prevention device for a bridge.
Background
With the aggravation of the engineering activities of human beings in mountainous areas, the global warming, the enhancement of earthquake activities and other factors, the geological disasters in the mountainous areas are frequent. The phenomenon that rocks or soil bodies on hillsides suddenly collapse under the action of self weight or other external force is called collapse and rock fall, is a typical mountain area geological disaster type, accounts for more than 17% of all geological disasters (second to landslide disasters), has the characteristics of strong burst property, poor predictability, large randomness, high speed, high energy, wide influence range and the like, and has great threat to structures and human activities in the damage range. As a large country in mountainous areas, about two thirds of the area of China is a heavy hill or a mountain, and even more in western areas, a bridge is used as one of indispensable structures in the traffic construction of mountainous areas, and accidents caused by collapse and falling rocks occur occasionally. For some falling rocks with small volume and low speed, only local damage of the bridge is generally caused, and when the falling rocks encounter large impact, the integrity of the bridge structure can be damaged.
In the prior art, the protection of the collapse rockfall is generally to arrange a blocking device on the side of a pier facing a mountain, for example, the invention patent with the application number of CN201410028539.8 and the name of 'a flexible rockfall collision prevention device for a pier', the scheme comprises a plurality of steel strips, a plurality of blocking blocks, a front upright post, a rear upright post, an upright post anchoring device and a base, and the energy of the rockfall is absorbed by the deformation of the corrugated steel strips, but the scheme also has some defects. 1. The corrugated steel plate strips cannot recover after being deformed, the energy absorption effect after being deformed is greatly reduced, and the corrugated steel plate strips need to be replaced frequently by manpower. 2. The whole plane shape that is of device, the whole place ahead that can pile up at the device of falling rocks, when accumulational falling rocks quantity is more, the device will lose the barrier effect, and subsequent falling rocks can overturn the device and directly strike on the pier.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a falling rock impact prevention device for a bridge, which aims to: the structural safety of pier is improved, and the falling rocks are prevented from piling up in front of the bridge anti-collision device, so that the cleaning workload is reduced.
The technical scheme adopted by the invention is as follows:
the utility model provides a prevent falling rocks percussion device for bridge, establishes the elastic protection cover in the pier outside including the cover, elastic protection cover outside cover is equipped with the anticollision cover, the anticollision cover is provided with the anticollision guide structure who is used for making falling rocks to the motion of pier both sides to massif one side.
After adopting this technical scheme, when the condition of falling the stone takes place, the falling stone is along massif downstream, with the contact of anticollision guide structure, under anticollision guide structure's guide effect, falls the stone and follows the side of pier and through downward continuation motion to avoid falling the stone and openly striking the pier, prevent that the falling stone from piling up in buffer stop's the place ahead, guide structure can reduce the impact force that the pier received in addition, further guarantees pier structure safety. And the falling rocks do not need to be cleaned, so that manpower and material resources are saved, and the safety is higher.
Preferably, anticollision guide structure includes that cross sectional shape is the steel sheet of V font, the outside of steel sheet is provided with elastic buffer layer, the inboard of steel sheet is provided with several supporting beams that are the V font from last to down, elastic buffer layer, steel sheet (and supporting beam's tip all with crashproof cover fixed connection.
After adopting this preferred scheme, the elastic buffer layer can protect the steel sheet, and the supporting beam of V font can support the steel sheet, and steel sheet and supporting beam set to the V font, can decompose the power that the falling rocks transmitted, reduce the impact force that the pier received, and supporting beam can transmit the impact force that receives for the anticollision sheathe simultaneously, and the anticollision is overlapped even transmission again and is put forward the pier to prevent that the pier from receiving concentrated power, thereby reduce the impaired probability of pier.
Preferably, the front end of the elastic buffer layer facing the mountain is thicker than the rest part.
After adopting this preferred scheme, can improve the positive buffer capacity of elastic buffer layer, the steel sheet damages when preventing falling rocks front impact steel sheet.
Preferably, the outside of elastic buffer layer is provided with the protection outer wall that adopts the ECC material to make, the both ends and the crashproof cover fixed connection of protection outer wall.
Because the elastic buffer layer is made of rubber materials, the service life of the exposed rubber materials is directly determined by aging of the exposed rubber materials, and the aging and the service life of the rubber are accelerated under severe natural environments, particularly hot winter cold in summer, rainwater erosion and the like. After the optimized scheme is adopted, the protective outer wall is arranged on the outer side of the elastic buffering material, so that the rubber material can be prevented from being exposed outside, the rubber aging rate is delayed, and the durability of the whole device is improved by depending on the toughness, the shock resistance and the like of the ECC material.
Preferably, a first supporting rod is arranged between the supporting beam and the anti-collision sleeve, one end of the first supporting rod is fixedly connected with the middle of the supporting beam, the other end of the first supporting rod is connected with a hydraulic damper, and the hydraulic damper is connected with the anti-collision sleeve.
After adopting this preferred scheme, first bracing piece can support the steel sheet, sets up hydraulic damper simultaneously, can provide certain buffer capacity when falling rock striking, and the existence of attenuator can make first bracing piece have certain removal space moreover, makes the steel sheet can take place certain deformation after receiving the striking to further absorb the kinetic energy of falling rock, reduce the impact force that the pier received.
Preferably, a plurality of second supporting rods are symmetrically arranged on two sides of the first supporting rod, and the other ends of the second supporting rods are connected with the supporting beam.
After adopting this preferred scheme, the second bracing piece can support the side of steel sheet, prevents that the side of steel sheet and a supporting beam from taking place great deformation, and the power that the second bracing piece received simultaneously can transmit on first bracing piece, then transmits the attenuator to consume the energy that the side impact produced.
Preferably, the steel plate and the anti-collision sleeve enclose a cavity, and the cavity is filled with energy-absorbing materials.
After the optimal scheme is adopted, the energy absorption material can further consume energy generated by falling rock impact, and reduce the impact force on the bridge pier.
Preferably, the energy absorbing material is gravel.
After the preferable scheme is adopted, the gravel can greatly consume the energy transmitted by the falling rock impact, is easy to obtain and can save the cost.
Preferably, the bottom of the cavity is provided with a bottom plate, and the periphery of the bottom plate is hermetically connected with the steel plate and the bottom of the anti-collision sleeve.
With this preferred solution, the bottom plate prevents the problem of a reduced energy consumption due to leakage of gravel from the bottom of the cavity.
Preferably, a plurality of hemispherical bulges are uniformly distributed on the inner side of the elastic protection sleeve, and the hemispherical bulges are in contact with the outer surface of the pier.
After adopting this preferred scheme, there is the space between the hemispherical arch, when the anticollision cover received the impact of falling rocks, extrudees the elastic protection cover, makes the elastic protection cover take place extrusion deformation, and the space between the hemispherical arch provides the space for the deformation of elastic protection cover to the buffering effect of elastic protection cover has been improved.
Preferably, the elastic protection sleeve is made of one or more materials selected from rubber, polyurethane foam, polystyrene foam, polyethylene foam, polyvinyl chloride foam and polypropylene foam.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. when the condition of falling rocks takes place, falling rocks along massif downstream, with the contact of anticollision guide structure, under anticollision guide structure's guiding action, falling rocks is followed the side process downstream of pier to avoid falling rocks and openly striking the pier, prevent that falling rocks from piling up in buffer stop's the place ahead, guide structure can reduce the impact force that the pier received in addition, further guarantees pier structure safety. And need not clear up falling rocks, practice thrift manpower and materials, the security is higher.
2. Elastic buffer layer can protect the steel sheet, and a supporting beam of V font can support the steel sheet, and the steel sheet sets to the V font with a supporting beam, can decompose the power that the falling rocks transmitted, reduces the impact force that the pier received, and a supporting beam can transmit the impact force that receives for the anticollision sheathe in simultaneously, and the anticollision is overlapped even transmission again and is put in the pier to prevent that the pier from receiving concentrated power, thereby reduce the impaired probability of pier.
3. The front end thickness of the elastic buffer layer facing to the mountain body side is larger than the thickness of the rest parts, the front buffer capacity of the elastic buffer layer can be improved, and the steel plate is prevented from being damaged when falling rocks impact the steel plate from the front side.
4. The outer side of the elastic buffer material is provided with a layer of protective outer wall, so that the rubber material can be prevented from being exposed outside, the rubber aging rate is delayed, and the durability of the whole device is improved by depending on the toughness, the shock resistance and the like of the ECC material.
5. Set up first bracing piece and hydraulic damper, can provide certain buffer capacity when falling rock striking, the existence of attenuator can make first bracing piece have certain removal space moreover, makes the steel sheet can take place certain deformation after receiving the striking to further absorb the kinetic energy of falling rock, reduce the impact force that the pier received.
6. Set up the second bracing piece, can support the side of steel sheet, improve the transverse rigidity of steel sheet, prevent that the side of steel sheet and a supporting beam from taking place great deformation, on the power that the second bracing piece received can transmit first bracing piece simultaneously, then transmit for the attenuator to consume the energy that the side impact produced.
7. The cavity surrounded by the steel plate and the anti-collision sleeve is filled with energy-absorbing materials, and the energy-absorbing materials can further consume energy generated by rockfall impact and reduce impact force applied to the pier.
8. The energy absorption material adopts gravel, so that the energy consumption effect is good, the energy absorption material is easy to obtain, and the cost can be saved.
9. Elastic protection sleeve's inboard evenly distributed has the hemispherical arch of several, has the space between the hemispherical arch, and when the anticollision cover received the impact of falling rocks, extrusion elastic protection sleeve made elastic protection sleeve take place the extrusion deformation, and the space between the hemispherical arch provides the space for elastic protection sleeve's deformation to elastic protection sleeve's buffering effect has been improved.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.
Reference numerals are as follows: the method comprises the following steps of 1-pier, 2-elastic protective sleeve, 3-anti-collision sleeve, 4-elastic buffer layer, 5-steel plate, 6-supporting beam, 7-first supporting rod, 8-second supporting rod, 9-hydraulic damper, 10-energy-absorbing material, 11-bottom plate, 12-bearing platform, 13-pile foundation and 14-protective outer sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The present invention is described in detail below with reference to FIGS. 1-2.
The utility model provides an anti-falling rock collision device for bridge, as shown in figure 1, establishes the elastic protection cover 2 in the pier 1 outside including the cover, the cover is equipped with anticollision cover 3 in the elastic protection cover 2 outside, anticollision cover 3 is provided with towards massif one side and is used for making the falling rock to the crashproof guide structure of the 1 both sides motion of pier. In this embodiment, the anti-collision cover 3 is made of a steel plate. A bearing platform 12 is arranged below the pier 1, a pile foundation is arranged below the bearing platform 12, and the bottom of the rockfall prevention impact device is fixedly connected with the bearing platform 12 through bolts. In another embodiment, if no bearing platform 12 is arranged below the pier 1, a concrete foundation is poured around the pier to support the rock fall prevention device.
In this embodiment, anticollision guide structure includes that cross sectional shape is the steel sheet 5 of V font, the outside of steel sheet 5 is provided with elastic buffer layer 4, the inboard of steel sheet 5 has a plurality of supporting beam 6 that are the V font from last to welding down, supporting beam 6 adopts I-steel or channel-section steel. In this embodiment, the elastic buffer layer 4 is made of rubber material and is adhered to the outer surface of the steel plate 5, and in another embodiment, the elastic buffer layer 4 may also be made of waste tires and is fixed on the outer surface of the steel plate 5 at intervals by bolts. In this embodiment, the tip of steel sheet 5 and a supporting beam 6 all passes through bolted connection with anticollision cover 3, anticollision cover 3 adopts two semi-cylindrical formula designs of buckleing formula, is convenient for install and dismantle, is convenient for change when taking place to damage in the later stage.
As shown in fig. 1, since the front end receives the largest impact force, in this embodiment, the thickness of the front end of the elastic buffer layer 4 facing the mountain is set to be greater than that of the rest.
As shown in fig. 1, the outer side of the elastic buffer layer 4 is coated with a protective outer wall 14 made of an ECC material, and two ends of the protective outer wall 14 are fixedly connected with the anti-collision sleeve 3 through bolts, so that the installation and the disassembly are convenient.
As shown in fig. 1, a first supporting rod 7 is arranged between the supporting beam 6 and the anti-collision sleeve 3, one end of the first supporting rod 7 is connected with the middle of the supporting beam 6 in a welding manner, the other end of the first supporting rod 7 is connected with a hydraulic damper 9 in a welding manner, and the hydraulic damper 9 is connected with the anti-collision sleeve 3 in a welding manner. In another embodiment, the two ends of the hydraulic damper 9 are hinged with the first support rod 7 and the impact sleeve 3 respectively. The hydraulic damper 9 is prior art and will not be described in detail herein.
In this embodiment, two second support rods 8 parallel to each other are symmetrically disposed on two sides of the first support rod 7, and the other ends of the second support rods 8 are fixedly connected to the support beam 6. In another embodiment, the number of the second support rods 8 can be set according to actual needs, and the two ends of the second support rods 8 are respectively hinged with the first support rods 7 and the support beam 6 through hinge seats, so that the installation and the disassembly are convenient.
The steel plate 5 and the anti-collision sleeve 3 enclose a cavity, and the cavity is filled with energy-absorbing materials 10. In this embodiment, the energy absorbing material 10 is gravel. In another embodiment, the energy absorbing material may be other bulk materials that can absorb energy.
As shown in fig. 2, the bottom of cavity is provided with bottom plate 11, bottom plate 11 all around with steel sheet 5 and crashproof cover 3's bottom sealing connection for prevent that the gravel in the cavity from leaking and influencing the energy-absorbing effect.
As shown in fig. 1, a plurality of hemispherical protrusions are uniformly distributed on the inner side of the elastic protection sleeve 2, the hemispherical protrusions are integrally formed with the elastic protection sleeve 2, and the hemispherical protrusions are in contact with the outer surface of the pier 1. In this embodiment, the distance between the adjacent hemispheric protrusions is 10cm.
In this embodiment, the elastic protection sleeve 2 is made of rubber. In another embodiment, the elastic protection sleeve 2 may be made of one or more of polyurethane foam, polystyrene foam, polyethylene foam, polyvinyl chloride foam, and polypropylene foam.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. The utility model provides a prevent falling rocks percussion device for bridge which characterized in that: establish elastic protection sleeve (2) in pier (1) outside including the cover, elastic protection sleeve (2) outside cover is equipped with anticollision cover (3), anticollision cover (3) are provided with towards massif one side and are used for making the rock fall to the crashproof guide structure of pier (1) both sides motion.
2. A rockfall impact prevention apparatus for bridges according to claim 1, wherein: anticollision guide structure includes steel sheet (5) that cross-sectional shape is the V font, the outside of steel sheet (5) is provided with elastic buffer layer (4), the inboard of steel sheet (5) is provided with a supporting beam (6) that several are the V font from last to down, the tip of elastic buffer layer (4), steel sheet (5) and supporting beam (6) all with crashproof cover (3) fixed connection.
3. A rockfall impact prevention device for bridges according to claim 2, wherein: the front end of the elastic buffer layer (4) facing to the mountain is thicker than the rest part.
4. A rockfall impact prevention apparatus for bridges according to claim 2, wherein: the outer side of the elastic buffer layer (4) is coated with a protective outer wall (14) made of ECC materials, and two ends of the protective outer wall (14) are fixedly connected with the anti-collision sleeve (3).
5. A rockfall impact prevention apparatus for bridges according to claim 2, wherein: be provided with first bracing piece (7) between supporting beam (6) and anticollision cover (3), the one end of first bracing piece (7) and the middle part fixed connection who supports beam (6), the other end of first bracing piece (7) is connected with hydraulic damper (9), hydraulic damper (9) are connected with anticollision cover (3).
6. A rock fall prevention impact device for a bridge of claim 5, wherein: the two sides of the first supporting rod (7) are symmetrically provided with a plurality of second supporting rods (8), and the other ends of the second supporting rods (8) are connected with the supporting beam (6).
7. A rockfall impact prevention apparatus for bridges according to claim 2, wherein: the steel plate (5) and the anti-collision sleeve (3) enclose a cavity, and energy-absorbing materials (10) are filled in the cavity.
8. A rockfall impact prevention apparatus for bridges according to claim 7, wherein: the bottom of cavity is provided with bottom plate (11), bottom plate (11) all around with steel sheet (5) and the bottom sealing connection of anticollision cover (3).
9. A rockfall impact prevention apparatus for bridges according to claim 1, wherein: the inner side of the elastic protection sleeve (2) is uniformly distributed with a plurality of hemispherical bulges, and the hemispherical bulges are in contact with the outer surface of the pier (1).
10. A rockfall impact prevention apparatus for bridges according to claim 1, wherein: the elastic protective sleeve (2) is made of one or more materials of rubber, polyurethane foam plastic, polystyrene foam plastic, polyethylene foam plastic, polyvinyl chloride foam plastic and polypropylene foam plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153566.9A CN115538341B (en) | 2022-09-21 | 2022-09-21 | Anti-falling stone impact device for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153566.9A CN115538341B (en) | 2022-09-21 | 2022-09-21 | Anti-falling stone impact device for bridge |
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| Publication Number | Publication Date |
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| CN115538341A true CN115538341A (en) | 2022-12-30 |
| CN115538341B CN115538341B (en) | 2023-05-30 |
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| CN202211153566.9A Active CN115538341B (en) | 2022-09-21 | 2022-09-21 | Anti-falling stone impact device for bridge |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806041A (en) * | 2010-03-25 | 2010-08-18 | 四川省交通厅公路规划勘察设计研究院 | Rolling stone collision protective structure for bridge pier |
| CN105672119A (en) * | 2016-01-14 | 2016-06-15 | 中铁大桥勘测设计院集团有限公司 | Anti-collision beam and anti-collision device with anti-collision beam |
| CN109056511A (en) * | 2018-09-30 | 2018-12-21 | 河南大学 | A kind of bridge pier and preparation method thereof for resisting mud-rock-flow-impact |
| CN208857674U (en) * | 2018-09-29 | 2019-05-14 | 佛山科学技术学院 | A kind of bridge anti-collision device that can weaken bridge pier vibration acceleration |
| CN109853432A (en) * | 2019-03-01 | 2019-06-07 | 广州大学 | Pile-column anticollision device of pier |
| CN113005888A (en) * | 2021-03-26 | 2021-06-22 | 中交隧道工程局有限公司南京分公司 | Energy-absorbing anti-collision high-performance pier |
-
2022
- 2022-09-21 CN CN202211153566.9A patent/CN115538341B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806041A (en) * | 2010-03-25 | 2010-08-18 | 四川省交通厅公路规划勘察设计研究院 | Rolling stone collision protective structure for bridge pier |
| CN105672119A (en) * | 2016-01-14 | 2016-06-15 | 中铁大桥勘测设计院集团有限公司 | Anti-collision beam and anti-collision device with anti-collision beam |
| CN208857674U (en) * | 2018-09-29 | 2019-05-14 | 佛山科学技术学院 | A kind of bridge anti-collision device that can weaken bridge pier vibration acceleration |
| CN109056511A (en) * | 2018-09-30 | 2018-12-21 | 河南大学 | A kind of bridge pier and preparation method thereof for resisting mud-rock-flow-impact |
| CN109853432A (en) * | 2019-03-01 | 2019-06-07 | 广州大学 | Pile-column anticollision device of pier |
| CN113005888A (en) * | 2021-03-26 | 2021-06-22 | 中交隧道工程局有限公司南京分公司 | Energy-absorbing anti-collision high-performance pier |
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| CN115538341B (en) | 2023-05-30 |
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