CN215561915U - Highway overpass and anti-collision wall for preventing container from being thrown out - Google Patents

Abstract

The utility model relates to a highway-span iron overpass and an anti-collision wall for preventing a container from being thrown out of the highway-span iron overpass, which comprise a plurality of guardrail groups arranged along the bridge direction, wherein each guardrail group comprises two guardrails arranged at intervals along the transverse bridge direction; each guardrail is vertically provided with an upright post, and the height of the upright post close to the center of the bridge is greater than that of the other upright post; and an anti-collision buffer platform is arranged between the two guardrails of each guardrail group. The highway-crossing iron overpass comprises a bridge deck, wherein the bridge deck is provided with a traffic lane and an anti-collision wall for preventing the container from being thrown out, and the anti-collision wall is positioned on one side, far away from the center of the bridge, of the traffic lane. According to the utility model, through the arranged spacing guardrails and the upright columns arranged on the guardrails, and after the height of the upright columns is designed, when the vehicle running on the bridge is about to rush out of the bridge floor, the vehicle to rush out of the bridge floor is subjected to energy dissipation and the rush-out direction of the vehicle is corrected through the first guardrail, and the vehicle is blocked in the bridge floor through the second guardrail, so that the vehicle is prevented from rushing out of the bridge floor.

Description

Highway overpass and anti-collision wall for preventing container from being thrown out

Technical Field

The utility model relates to the technical field of highway-span iron overpass safety protection, in particular to a highway-span iron overpass and an anti-collision wall for preventing a container from being thrown out.

Background

Each highway-crossing iron overpass for passing container transport vehicles, especially when crossing higher-grade railways (such as high-speed railways, passenger-dedicated line railways, 200km passenger-cargo collinear railways and the like) or crossing important railway ordinary speed trunks on highways, urban highways and the like with higher running speeds, in order to prevent accidents that containers on the vehicles are unhooked outside bridges and fall into the range of railways under the bridges after the container transport vehicles collide with the guardrails (collision walls) on the bridges, and avoid causing secondary serious damage to railway safety, special designs are needed to be carried out on the guardrails on the bridges and safety protection systems.

At present, 3 types of metal guardrails (such as cable guardrails and corrugated beam guardrails), concrete guardrails (various anti-collision walls with different sections and different heights) and combined guardrails (the concrete guardrails are adopted for motor lanes, the railings are adopted for sidewalks, or the concrete guardrails are adopted for the lower parts, and the railings are combined for the upper parts) are generally adopted. However, all guard rails at home and abroad can not meet the requirement of ensuring that vehicles do not rush out of roads and bridge floors, only the influence of accidents outside the roads and bridges is reduced to the minimum, most factors which can cause fatal consequences are eliminated, and the consequences of accidents outside the roads and bridges are reduced by a method or means, so that accidents with large proportion probability can be prevented, and the requirement of preventing all vehicles from rush out of roads and bridge floors is not met by 100%. Particularly, on a bridge passing through container transport vehicles, because the height of guardrails of various protection levels is smaller than the height of a vehicle flat plate of the transport container, once the container transport vehicles collide with an anti-collision wall, the containers on the vehicles can be unhooked, rolled on the side surface and thrown out of a bridge floor.

The railway is a national transportation passenger transport and freight transport development aorta and can not have any loss of flash; the safety protection of the overpass on the highway iron overpass is critical, and in any case, it must be ensured that the vehicles passing on the bridge, the large cargos such as containers loaded on the vehicles and the like and other cargos and the like cannot rush out or be thrown out of the bridge floor and fall into the railway range; however, all guardrails of the existing domestic and foreign relevant specifications cannot meet the basic requirements, and have limitations and unsatisfications in the aspects of applicability and safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a highway-span iron overpass and an anti-collision wall for preventing a container from being thrown out, which can at least solve part of defects in the prior art.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions: an anti-collision wall for preventing a container from being thrown out comprises a plurality of guardrail groups arranged along the bridge direction, wherein each guardrail group comprises two guardrails arranged at intervals along the transverse bridge direction; each guardrail is vertically provided with an upright post, and the height of the upright post close to the center of the bridge is greater than that of the other upright post; and an anti-collision buffer platform is arranged between the two guardrails of each guardrail group.

Further, a cross beam is arranged between two adjacent upright columns along the bridge direction.

Furthermore, the crossbeam is provided with a telescopic sleeve or an expansion joint.

Furthermore, two cross beams are arranged between two adjacent high upright columns and are arranged at intervals along the height direction; and a cross beam is arranged between two shorter adjacent upright columns.

Furthermore, an inclined strut is arranged between two guardrails of each guardrail group, one end of the inclined strut is connected to the top of the upright column close to the center of the bridge, and the other end of the inclined strut is connected to the guardrail of the other upright column.

Further, the inclined angle of the inclined strut is 57 degrees.

Furthermore, an inverted T stiffening rib is arranged below the bridge deck below the anti-collision wall.

Further, the upright post and the guardrail are connected through the embedded bolts and the steel plate in an anchoring mode.

Further, the clear width of the anti-collision buffer platform is not less than 2 m; the height of the higher upright post and the guardrail is not less than 2.1 m; the distance between two upright posts of each guardrail group is not more than 1.5 m.

The embodiment of the utility model provides another technical scheme: a highway-crossing iron overpass comprises a bridge deck, wherein a traffic lane and an anti-collision wall for preventing a container from being thrown out are arranged on the bridge deck, and the anti-collision wall is positioned on one side, far away from the center of the bridge, of the traffic lane.

Compared with the prior art, the utility model has the beneficial effects that:

1. through the interval guardrail that sets up and locate the stand on the guardrail to after the height of design stand, when the vehicle that traveles on the shelves bridge appears will rushing out the bridge floor accident, carry out the energy dissipation and entangle the vehicle and rush out the direction to the bridge floor vehicle of drawing out through first guardrail, keep off the vehicle in the bridge floor through the second guardrail, avoid it to rush out the bridge floor and fall the railway scope under the bridge.

2. The cross beam can improve the overall anti-collision performance of the anti-collision wall, so that the side lattice type steel wall layout is formed; the telescopic sleeve or the expansion joint arranged on the cross beam can be adjusted in a telescopic way according to the temperature change so as to improve the overall anti-collision performance of the lattice type steel wall.

3. Through setting up the bracing, form the strong support system of back to the curb surface lattice type shaped steel wall, play firm effective and very strong container and collide the effect, avoid lattice type shaped steel wall and root anchoring system to be destroyed even take place transversely to topple under the container collides the effect, can improve lattice type shaped steel wall crashproof ability conscientiously.

4. The inverted T stiffening ribs can prevent the bridge deck steel plate from generating larger forced buckling deformation in a plane after a vehicle impacts an anti-collision wall, reduce the buckling deformation range as much as possible, improve the deformation resistance and the plane rigidity of local over-large point load or short line load on the opposite surface of the steel bridge deck, and reduce the local deformation of the bridge deck after the vehicle impacts the anti-collision wall.

Drawings

Fig. 1 is a schematic view of an anti-collision wall for preventing a container from being thrown out according to an embodiment of the present invention;

fig. 2 is a schematic view of a highway overpass according to an embodiment of the present invention;

in the reference symbols: 1-a guardrail; 2-upright post; 3-an anti-collision buffer platform; 4-a cross beam; 5-diagonal bracing; 6-inverted T stiffener; 7-a bridge deck; 8-lane of traffic; 9-anti-collision wall.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an anti-collision wall 9 for preventing a container from being thrown out includes a plurality of guardrail sets arranged along a bridge direction, each of the guardrail sets includes two guardrails 1 arranged at intervals along a transverse bridge direction; an upright post 2 is vertically arranged on each guardrail 1, and the height of the upright post 2 close to the center of the bridge is greater than that of the other upright post 2; and an anti-collision buffer platform 3 is arranged between the two guardrails 1 of each guardrail group. In this embodiment, through the interval guardrail 1 that sets up and locate the stand 2 on the guardrail 1 to after the height of design stand 2, when the vehicle that runs on the shelves bridge appears will rushing out the bridge floor accident, carry out the energy dissipation and entangle the vehicle and rush out the direction to simulating to rushing out the bridge floor vehicle through first guardrail 1, keep off the vehicle in the bridge floor through second guardrail 1, avoid it to rush out the bridge floor and fall the railway scope under the bridge. Specifically, along following the bridge to or being the longitudinal direction, lay multiunit guardrail group, every group guardrail 1 all includes along the horizontal bridge to the interval twice guardrail 1 of laying, these twice guardrail 1 also can be called crashproof wall 9, then all set up post 2 on every guardrail 1 again, stand 2 can be shaped steel stand 2, in every group stand 2 (all set up stand 2 on two guardrails 1 of every group guardrail group, also called a set of stand 2 here), the interval is not less than 2 m's crashproof buffering platform 3 between them, can avoid the vehicle that traveles on the bridge to dash out the bridge floor and fall to the underbridge scope, and the interval between the two stands 2 of every guardrail group is not more than 1.5 m. The two columns 2 have a height, the height of the column 2 close to the center of the bridge or the traffic lane 8 plus the height of the guardrail 1 is not less than 2.1m, preferably 2.1m, while the height of the lower column 2 plus the height of the guardrail 1 is not less than 1.24m, because the total height of the container cargos is controlled below 4.2m from the ground, and is qualified as an over-limit transport vehicle if the height exceeds 4.2m, and illegal road passing is not allowed. Under special circumstances, when an overrun transportation vehicle is required to pass on the road, related permission procedures of the overrun transportation (large transportation) vehicle are required to be handled in advance according to law, after effective measures are taken (such as safety prevention and control measures such as along-the-road monitoring and whole-course escort, slow passing and the like), the vehicle is driven according to specified time, route and speed, and is not permitted to drive without permission, so that for a conventional container transportation vehicle passing through a highway overpass, a safety protection body for preventing a container on a bridge from throwing out is arranged according to the height which is higher than the gravity center of the container transportation vehicle and is not less than 2.1m, and because the height of the safety protection body on the bridge is not less than 2.1m, the bearing capacity of the bridge structure must be economic and reasonable, and the negative influence of the safety protection body on the wind resistance of the bridge structure must be considered, particularly on the bridge structures of a floating and semi-floating system such as a large-span or large-span suspension bridge and a cable-stayed bridge, the wind resistance design is the most key factor for controlling the design of the bridge structure and directly determines the safety, reliability and use comfort of the bridge structure; the method comprises the steps that on a large-span arch bridge and a beam type bridge, too large wind force borne by the side face of the bridge can also become a main factor of the bridge for resisting transverse overturning and ensuring the transverse stability of the bridge, the rationality of the design and the structural stress of the bridge is seriously influenced or even restricted, and the safety, the reliability and the use comfort of the bridge structure are directly influenced. Therefore, on the basis of meeting the safety protection of preventing the container from being thrown out, the negative influence degree on the wind-resistant design of the bridge must be reduced as much as possible, the weight must be reduced as much as possible, and the unreasonable influence on the structural design and the structural stress of the bridge must be reduced as much as possible.

The following are specific examples:

as an optimized scheme of the embodiment of the present invention, please refer to fig. 1, a cross beam 4 is disposed between two adjacent columns 2 along the bridge direction. Preferably, the cross beam 4 is provided with a telescopic sleeve or an expansion joint. Two cross beams 4 are arranged between two adjacent higher upright columns 2, and the two cross beams 4 are arranged at intervals along the height direction; a cross beam 4 is arranged between two shorter adjacent upright columns 2. In the embodiment, the overall anti-collision performance of the anti-collision wall 9 can be improved through the arranged cross beam 4, so that the side lattice type steel wall layout is formed; and the telescopic sleeve or the expansion joint arranged on the cross beam 4 can be adjusted in a telescopic way according to the temperature change so as to improve the overall anti-collision performance of the lattice type steel wall. In addition, the cross beams 4 are made of steel, such as rectangular hollow section steel, the number of the cross beams 4 can be selected according to actual conditions, for example, two cross beams 4 can be arranged on the higher upright post 2, and one cross beam can be arranged on the lower upright post 2.

As an optimized scheme of the embodiment of the present invention, please refer to fig. 1, an inclined strut 5 is arranged between two guardrails 1 of each guardrail group, one end of the inclined strut 5 is connected to the top of the upright post 2 near the center of the bridge, and the other end is connected to the guardrail 1 of the other upright post 2. Preferably, the angle of inclination of the diagonal brace 5 is 57 °. In this embodiment, through setting up bracing 5, form the strong support system of back to the side lattice type steel wall, play firm effective and very strong container of preventing and collide the effect, avoid lattice type steel wall and root anchoring system to be destroyed even take place horizontal toppling under the container collides the effect, can improve lattice type steel wall crashproof ability conscientiously. Specifically, the inclined strut 5 is an i-steel inclined strut 5, one end of which is arranged at the top of the higher upright post 2, and the anchoring position of the other end is indefinite, which can be selected according to the actual situation, for example, the inclined strut can be arranged on the guardrail 1 or the upright post 2.

Referring to fig. 1, as an optimized solution of the embodiment of the present invention, an inverted T stiffener 6 is disposed below the bridge deck 7 below the impact wall 9. In this embodiment, the inverted T stiffening ribs 6 can prevent the bridge deck steel plate from generating large forced buckling deformation in a plane after the vehicle impacts the anti-collision wall 9, reduce the buckling deformation range as much as possible, improve the deformation resistance and the plane rigidity of local over-large point load or short line load on the opposite surface of the steel bridge deck 7, and reduce the local deformation of the bridge deck 7 after the vehicle impacts the anti-collision wall 9. Specifically, the inverted-T stiffener 6 may be provided generally along the main beam just below the deck 7 in the area of the impact wall 9.

As an optimized scheme of the embodiment of the utility model, the upright post 2 is connected with the guardrail 1 through an embedded bolt and a steel plate anchor. In the present embodiment, the guard rail 1 is a concrete guard rail 1, which is reliably anchored by embedded bolts and steel plates, and the above-mentioned connections between the steel members are reliably welded or bolted.

Therefore, the anti-collision wall 9 can improve the existing protection level of domestic and foreign highways and bridge guardrails 1, can prevent vehicles on the bridge from rushing out of the highways and bridge floors, particularly for bridges of container transport vehicles, provides a safety protection system which can prevent the container transport vehicles from rolling laterally and being thrown out of the bridge floors after the container transport vehicles collide with the anti-collision wall 9 and the containers on the vehicles are unhooked, can ensure the railway safety under the highway-crossing iron overpass, furthest reduces the degree of safety accidents of the vehicles on the bridge, avoids secondary disasters and major secondary safety accidents, and furthest reduces casualties and property loss in the traffic accidents. The overpass can be widely applied to the overpasses of the public crossing railways of all container transportation vehicles, can cover various beam types such as steel beams and concrete beams and various bridge types such as simply supported beams, continuous rigid frames, cable-stayed bridges and suspension bridges, and can reduce the negative influence on the safety and wind resistance of the bridge structure to the maximum extent when the safety protection measures for preventing the containers from being thrown out are arranged on the bridge. With the high-speed development of national economy and transportation industry in China, the container transportation demand is more and more vigorous, and more roads, bridges and highway iron overpasses for passing container transportation vehicles are provided.

The embodiment of the utility model provides a highway-crossing iron overpass, which comprises a bridge deck 7, wherein the bridge deck 7 is provided with a traffic lane 8 and an anti-collision wall 9 for preventing a container from being thrown out, and the anti-collision wall 9 is positioned on one side of the traffic lane 8, which is far away from the center of a bridge. In this embodiment, the anti-collision wall 9 is used on a highway iron overpass, so as to achieve a good protection effect, and for concrete effects and characteristics, reference is made to the above embodiments, which will not be described herein again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a prevent crashproof wall that container thrown away which characterized in that: the guardrail comprises a plurality of guardrail groups arranged along the bridge direction, wherein each guardrail group comprises two guardrails arranged at intervals along the transverse bridge direction; each guardrail is vertically provided with an upright post, and the height of the upright post close to the center of the bridge is greater than that of the other upright post; and an anti-collision buffer platform is arranged between the two guardrails of each guardrail group.

2. An impact wall for preventing a container from being thrown out as claimed in claim 1, wherein: and a cross beam is arranged between two adjacent upright posts along the bridge direction.

3. An impact wall for preventing a container from being thrown out as claimed in claim 2, wherein: the crossbeam is provided with a telescopic sleeve or an expansion joint.

4. An impact wall for preventing a container from being thrown out as claimed in claim 2, wherein: two cross beams are arranged between two adjacent higher upright columns and are arranged at intervals along the height direction; and a cross beam is arranged between two shorter adjacent upright columns.

5. An impact wall for preventing a container from being thrown out as claimed in claim 1, wherein: an inclined strut is arranged between two guardrails of each guardrail group, one end of the inclined strut is connected to the top of the upright column close to the center of the bridge, and the other end of the inclined strut is connected to the guardrail of the other upright column.

6. An impact wall for preventing a container from being thrown out as claimed in claim 5, wherein: the inclined angle of the inclined strut is 57 degrees.

7. An impact wall for preventing a container from being thrown out as claimed in claim 1, wherein: and an inverted T stiffening rib is arranged below the bridge deck below the anti-collision wall.

8. An impact wall for preventing a container from being thrown out as claimed in claim 1, wherein: the upright post is connected with the guardrail through the embedded bolt and the steel plate anchor.

9. An impact wall for preventing a container from being thrown out as claimed in claim 1, wherein: the clear width of the anti-collision buffer platform is not less than 2 m; the height of the higher upright post and the guardrail is not less than 2.1 m; the distance between two upright posts of each guardrail group is not more than 1.5 m.

10. The utility model provides a highway iron overpass, includes decking, its characterized in that: the bridge deck is provided with a traffic lane and an anti-collision wall for preventing the container from being thrown out according to any one of claims 1 to 9, wherein the anti-collision wall is positioned on one side of the traffic lane far away from the center of the bridge.

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