CN214089637U - Protection device for preventing rolling stone and debris flow impact of bridge pier - Google Patents
Protection device for preventing rolling stone and debris flow impact of bridge pier Download PDFInfo
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- CN214089637U CN214089637U CN202023002040.XU CN202023002040U CN214089637U CN 214089637 U CN214089637 U CN 214089637U CN 202023002040 U CN202023002040 U CN 202023002040U CN 214089637 U CN214089637 U CN 214089637U
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Abstract
The utility model discloses a protective device for preventing rolling stones and debris flow impact of a pier, which comprises an anti-collision wall body arranged outside the pier and facing to the mountain side, the anti-collision wall body is formed by sequentially splicing a plurality of anti-collision boxes, each anti-collision box comprises a top plate, a bottom plate and side plates, two adjacent side plates are connected through a first L-shaped connecting plate, the side plates are connected with the top plate through second L-shaped connecting plates, the side plates are connected with the bottom plate through third L-shaped connecting plates, the two wing plates of the first L-shaped connecting plate are arranged on the two side plates by adopting first fastening bolts, two wing plates of the second L-shaped connecting plate are respectively arranged on the side plate and the top plate by adopting second fastening bolts, and two wing plates of the third L-shaped connecting plate are respectively installed on the side plate and the bottom plate by adopting third fastening bolts. The protection device can protect the bridge pier, and is stable in energy dissipation mode, convenient to install and construct and strong in durability.
Description
Technical Field
The utility model belongs to the technical field of the pier protection, especially, relate to a protection device that stone and mud-rock flow impact are prevented to pier.
Background
The debris flow is a complex multiphase fluid consisting of water, silt and huge stones, flows along a slope or a groove, belongs to a bad physical geological phenomenon in mountainous areas, and has the characteristics of sudden outbreak, short duration, large energy and the like. China belongs to the country with the most widely distributed debris flow, the mixture debris flow with the debris flow or the debris flow with the debris flow frequently occurs in steep mountainous areas, the destructive power of the debris flow is very large, the direct damage to the bridge can be caused by scouring, impacting and scouring of bridge structures, wherein the impact of the debris can form a huge threat to the safety of piers, and the caused economic loss and the consumption of human resources are not negligible. Due to the limitation of landforms in western regions of China, roads or railway routes mostly adopt bridges to directly cross valleys. With the development of western construction and development, research on rock rolling prevention and debris flow impact of bridge piers becomes an important subject. In order to solve the problem, at present, pier protection measures such as patents CN103741610B and CN208668251U mostly adopt measures of installing fixed anti-collision devices around piers, buffer and protect the piers through buffer springs, the devices mostly use materials such as steel or common concrete, need to be periodically repaired and replaced, and the energy dissipation effect is not obvious.
The existing protective device for the bridge pier in the debris flow area mainly has the following defects: 1) the energy dissipation level of the material of the device is general, and the buffering effect is not obvious; (2) the device is easy to deform and damage after multiple impacts of stones, and the anti-collision capacity is weakened; (3) due to the limitation of the size and materials of the device, the impact of the rolling stone with the ultra-large particle size is difficult to effectively stop; (4) the non-assembled device is inconvenient to install and transport, and the construction cost is increased; (5) the durability of the device is general, regular maintenance and overhaul are needed during operation, once the device is damaged, replacement construction is complex, and the overall replacement economic cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a protection device that stone and mud-rock flow impact are prevented to pier, this protection device not only can protect the pier to the pier, and it is very convenient to be under construction the installation moreover.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a protection device for preventing rolling stones and debris flow impact of a pier comprises an anti-collision wall body arranged outside the pier and facing to a mountain side, wherein the anti-collision wall body is formed by sequentially splicing a plurality of anti-collision boxes, each anti-collision box comprises a top plate, a bottom plate and side plates, two adjacent side plates are connected through a first L-shaped connecting plate, the side plates are connected with the top plate through second L-shaped connecting plates, and the side plates are connected with the bottom plate through third L-shaped connecting plates;
the two wing plates of the first L-shaped connecting plate are arranged on the two side plates through first fastening bolts, the two wing plates of the second L-shaped connecting plate are arranged on the side plates and the top plate through second fastening bolts respectively, and the two wing plates of the third L-shaped connecting plate are arranged on the side plates and the bottom plate through third fastening bolts respectively.
Specifically, the top plate, the bottom plate and the side plates are all made of ultra-high performance concrete plates, and transverse reinforcing steel bars and vertical reinforcing steel bars are uniformly distributed in the ultra-high performance concrete plates.
The anti-collision wall comprises a conical retaining wall and two wing retaining walls, wherein the conical retaining wall is located at the foremost end of the whole device, the wing retaining walls are symmetrically fixed, and the bridge pier is located in a space surrounded by the conical retaining wall and the two wing retaining walls.
Specifically, a buffer element is further arranged between the anti-collision wall body and the pier.
Specifically, the buffer element comprises a connecting rope sleeved outside the pier and a plurality of rubber cushion blocks arranged on the connecting rope.
Specifically, two adjacent anti-collision boxes are connected through connecting bolts.
Compared with the prior art, the utility model discloses the beneficial effect who has lies in: the utility model discloses when mud-rock flow or roll the stone and fall from the hillside, the anticollision wall body can change and roll stone and mud-rock flow movement track, avoids the stone current and rolls the stone and produce direct impact to the pier, plays the purpose of protection pier.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a protection device provided in an embodiment of the present invention;
fig. 2 is a schematic side view of a protection device according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a crash box according to an embodiment of the present invention;
wherein: 1-an anti-collision wall body; 101-a tapered retaining wall; 102-wing retaining wall, 2-pier; 3-mountain body; 4-anti-collision box; 401-a top plate; 402-a backplane; 403-side plate; 404-a first L-shaped connecting plate; 405-a second L-shaped connecting plate; 406-a third L-shaped connecting plate; 407-a first fastening bolt; 408-a second fastening bolt; 409-a third fastening bolt; 5-connecting ropes; 6-rubber cushion block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, a protection device for preventing rolling stones and debris flow impact on a pier comprises an anti-collision wall body 1, wherein the anti-collision wall body 1 is arranged on one side of the pier 2, which faces a mountain 3, the anti-collision wall body 1 is formed by sequentially splicing a plurality of anti-collision boxes 4, each anti-collision box 4 comprises a top plate 401, a bottom plate 402 and side plates 403, two adjacent side plates 403 are connected through a first L-shaped connecting plate 404, each side plate 403 is connected with the top plate 401 through a second L-shaped connecting plate 405, and each side plate 403 is connected with the bottom plate 402 through a third L-shaped connecting plate 406.
Specifically, two wing plates of the first L-shaped connecting plate 404 are fixedly mounted on the two side plates 403 by using first fastening bolts 407, two wing plates of the second L-shaped connecting plate 405 are fixedly mounted on the side plates 403 and the top plate 401 by using second fastening bolts 408, and two wing plates of the third L-shaped connecting plate 406 are fixedly mounted on the side plates 403 and the bottom plate 402 by using third fastening bolts 409.
In this embodiment, when mud-rock flow or rock fall from the hillside, the anticollision wall body 1 can change rock-rock flow and mud-rock flow movement track, avoids rock flow and rock-rock to produce direct impact to pier 2, plays the purpose of protection pier 2. The assembled anti-collision box 4 is adopted, so that the construction and installation are very convenient; the anti-collision box 4 is formed by splicing a top plate 401, a bottom plate 402 and a plurality of side plates 403, the whole anti-collision wall body 1 can be assembled in a factory or on site according to on-site transportation and assembly conditions without on-site welding, so that the construction period can be shortened, the labor intensity can be reduced, and the construction cost can be saved.
Referring to fig. 1, in some possible embodiments, a buffer element may be further disposed between the impact wall 1 and the pier 2, and the buffer element is used to prevent the impact wall 1 from impacting the pier 2 and causing damage.
Specifically, the buffer element comprises a connecting rope 5 sleeved outside the pier 2 and a rubber cushion block 6 arranged on the connecting rope 5, the rubber cushion block 6 is used for preventing the collision wall body 1 from impacting and damaging the pier 2, and meanwhile, the economic cost of the rubber cushion block 6 is low. Of course, the buffer element can also adopt energy absorption components such as buffer springs and the like.
In practical applications, the top plate 401, the bottom plate 402 and the side plates 403 may be made of a dense reinforced Ultra High Performance Concrete (UHPC) material. In this embodiment, the top plate 401, the bottom plate 402, and the side plates 403 are all made of ultra-high performance concrete plates, and transverse steel bars and vertical steel bars are uniformly distributed in the ultra-high performance concrete plates, so that the anti-collision box 4 can maintain good working performance under repeated impact of rolling stones due to the characteristics of ultra-high performance concrete (UHPC) material, such as ultra-high mechanical property, high energy consumption, high impermeability, and ultra-high durability, and thus the pier 2 can be effectively protected from the impact of the rolling stones due to zero maintenance.
In the embodiment, the anti-collision box is formed by assembling and combining the assembled high-performance concrete box wall through the UHPC bolt, and the high elasticity, the high toughness, the high energy consumption and the high durability of the high-performance concrete (UHPC) with the closely-matched ribs are fully utilized.
Referring to fig. 1, it should be noted that the anti-collision wall 1 includes a tapered retaining wall 101 and two wing retaining walls 102, the tapered retaining wall 101 is located at the foremost end of the whole device, the wing retaining walls 102 are symmetrically fixed at two sides, and the pier 2 is located in a space enclosed by the tapered retaining wall 101 and the two wing retaining walls 102. Due to the design mode, the rolling stones cannot pass through the anti-collision wall body 1, when the rolling stones and the debris flow move to the tapered retaining wall 101 at the front end, the tapered retaining wall 101 forces the rolling stones and the debris flow to change the motion track and keep away from the pier 2, so that the protective device cannot be impacted by too large energy, and the pier 2 is effectively protected.
In practical application, the protective device can be directly placed on a bearing platform or a surrounding riverbed, extra fixing measures are not applied, the limit of the anti-collision device is realized only by self weight, and the additional acting force of the anti-collision device on the bearing platform under the impact action of debris flow and rolling stones is reduced.
The embodiment has the following advantages: the anti-collision box fully utilizes the high elasticity, high toughness, high energy consumption and high durability of the dense reinforcement high-performance concrete (UHPC), and has obvious energy dissipation and buffering effects; (2) the device can bear repeated impact of rock rolling and debris flow, and the anti-collision capability is not obviously degraded under multiple impacts; (3) the effective size of the anti-collision box is large, so that the direct impact of the rolling stones with ultra-large particle sizes on the bridge pier can be prevented; (4) the whole anti-collision wall body can be assembled in a factory or on site according to on-site transportation and assembly conditions without on-site welding, so that the construction period can be shortened, the labor intensity can be reduced, and the construction cost can be saved; (5) the device has good durability, can partially replace components in the operation process, and has lower economic cost. The whole device can consume the impact energy of the debris flow and the rolling stones and block the direct impact action of the debris flow and the rolling stones on the bridge piers through the mode that the high-deformation box walls buffer the direct impact force and the ultrahigh-performance concrete deformation energy absorption, and the normal use of the bridge piers facing the slope surface near the steep slope in the mountainous area is effectively guaranteed.
The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (6)
1. The utility model provides a protection device that stone and mud-rock flow impact are prevented to pier, is in including setting up the anticollision wall body in pier outside to mountain side, its characterized in that: the anti-collision wall body is formed by sequentially splicing a plurality of anti-collision boxes, each anti-collision box comprises a top plate, a bottom plate and side plates, two adjacent side plates are connected through a first L-shaped connecting plate, the side plates are connected with the top plate through a second L-shaped connecting plate, and the side plates are connected with the bottom plate through a third L-shaped connecting plate;
the two wing plates of the first L-shaped connecting plate are arranged on the two side plates through first fastening bolts, the two wing plates of the second L-shaped connecting plate are arranged on the side plates and the top plate through second fastening bolts respectively, and the two wing plates of the third L-shaped connecting plate are arranged on the side plates and the bottom plate through third fastening bolts respectively.
2. The protection device of claim 1, wherein: the top plate, the bottom plate and the side plates are all made of ultra-high performance concrete plates, and transverse reinforcing steel bars and vertical reinforcing steel bars are uniformly distributed in the ultra-high performance concrete plates.
3. The protection device according to claim 1 or 2, characterized in that: anticollision wall body includes toper barricade and two wing barricades, the toper barricade is located the foremost of whole device, and bilateral symmetry is fixed the wing barricade, the pier is located in the space that toper barricade and two wing barricades enclose.
4. The protection device according to claim 1 or 2, characterized in that: and a buffer element is also arranged between the anti-collision wall body and the pier.
5. The protection device of claim 4, wherein: the buffer element comprises a connecting rope sleeved outside the pier and a plurality of rubber cushion blocks arranged on the connecting rope.
6. The protection device according to claim 1 or 2, characterized in that: and two adjacent anti-collision boxes are connected through a connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023002040.XU CN214089637U (en) | 2020-12-14 | 2020-12-14 | Protection device for preventing rolling stone and debris flow impact of bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023002040.XU CN214089637U (en) | 2020-12-14 | 2020-12-14 | Protection device for preventing rolling stone and debris flow impact of bridge pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214089637U true CN214089637U (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023002040.XU Expired - Fee Related CN214089637U (en) | 2020-12-14 | 2020-12-14 | Protection device for preventing rolling stone and debris flow impact of bridge pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214089637U (en) |
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2020
- 2020-12-14 CN CN202023002040.XU patent/CN214089637U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |