CN203834354U - Anti-collision guardrail for bridges - Google Patents

Abstract

The utility model discloses an anti-collision guardrail for bridges. The anti-collision guardrail comprises a plurality of stand columns, a pedestal, a plurality of inserted-L-shaped rear supports, a bracket and a crossbeam, wherein the pedestal is a reinforced concrete platelike structure formed on the outer side surface of the flange plate of a bridge by pouring, the lower end parts of the plurality of stand columns are anchored at the part on the inner side of the pedestal at intervals along the length direction of the bridge, the lower end parts of the plurality of inserted-L-shaped rear supports are anchored at the part on the outer side of the pedestal at intervals along the length direction of the bridge, the upper end of each inserted-L-shaped rear support is connected with the middle part of the corresponding stand column, the bracket is composed of two steel belts arranged in parallel on the inner surfaces of the upper parts of the plurality of stand columns, and the crossbeam is arranged on the plurality of stand columns and between the two steel belts of the bracket. The anti-collision guardrail for bridges provided by the utility model is good in both integral rigidity and mechanical performance, and also has the advantages of simple structure, low cost, easiness in production and mounting and the like.

Description

A kind of Collison fence for bridge

Technical field

The utility model belongs to bridge protector technical field, particularly relates to a kind of Collison fence for bridge.

Background technology

Anticollision barrier, as one of important safety driving measure of bridge, can stop vehicle to go out bridge floor effectively, reduces or alleviate the casualties and the property loss that cause because of traffic accident personnel, is therefore widely used already.Conventional anticollision barrier mostly is semi-rigidity rail at present; this is because semi-rigidity rail is not only convenient to produce and on-the-spot installation; and can in collision process, produce larger elastic-plastic deformation; the impact force applying with buffering vehicle; can guide again vehicle and change travel direction simultaneously; be conducive to protect vehicle and passenger's personal safety, so application is very extensive.

But, because existing anticollision barrier is to cushion by the distortion of fence upright and crossbeam the impact force that vehicle applies, but be often subject to after Vehicular impact, column on it easily presents heeling condition, thereby its effective height is constantly reduced, and result causes its security performance also in continuous decline.

Summary of the invention

In order to address the above problem, the purpose of this utility model is to provide a kind of can farthest reduce the Collison fence for bridge of collision to occupant injury on vehicle and car.

In order to achieve the above object, Collison fence for bridge provided by the utility model comprises many root posts, base, multiple inverted L-shaped back brace, bracket and crossbeam; Wherein base is to build and the tabular structure of steel concrete that forms at bridge flange plate outer surface; The bottom of many root posts is anchored at base inside line along bridge length direction standoff distance; The bottom of multiple inverted L-shaped back braces is anchored at chassis outer side position along bridge length direction standoff distance, and the upper end of each inverted L-shaped back brace is connected with the middle part of a root post; Bracket is made up of two steel bands that are set in parallel in many root posts inside upper part surface; Crossbeam is arranged on many root posts the position between two steel bands on bracket.

Described column is encased structures, and interior outside is also provided with the stiffening rib for strengthening its opposing jolt capacity.

Described crossbeam is to be arranged alternately and to utilize steel plate and the rubber tile that bonding agent bonds together to form by some layers.

Described inverted L-shaped back brace is that steel supports.

The column using in the Collison fence for bridge that the utility model provides is encased structures, because its rigidity is larger, and pass through spacer bars and bolt anchoring in reinforced concrete footing, therefore in the time that it is subject to Vehicular impact, can transfer the load on mixed earth base by inverted L-shaped back brace, and inverted L-shaped back brace itself also has certain rigidity, therefore its integral rigidity and stress performance are all relatively good; Inverted L-shaped back brace can also strengthen the bending rigidity of column, reduces its inclination and distortion, strengthens the lateral stiffness of guardrail simultaneously.In addition, be anchored at crossbeam on concrete filled steel tube column and can prevent that vehicle from crossing guardrail, and because it is the composite material that is arranged alternately and utilizes steel plate that bonding agent bonds together and rubber tile to form by some layers, therefore there is certain rigidity and elastic deformability, in the time that vehicle bumps against on crossbeam, crossbeam can produce certain plastic strain, absorbs and dissolves part energy simultaneously.In addition, this guardrail also have simple in structure, cost is low, be easy to make and the advantage such as installation.

Brief description of the drawings

The cross section sectional drawing of the Collison fence for bridge that Fig. 1 provides for the utility model.

Detailed description of the invention

Collison fence for bridge the utility model being provided below in conjunction with the drawings and specific embodiments is elaborated.

As shown in Figure 1, Collison fence for bridge provided by the utility model comprises many root posts 1, base 2, multiple inverted L-shaped back brace 3, bracket 4 and crossbeam 5; Wherein base 2 is to build and the tabular structure of steel concrete that forms at bridge flange plate 6 outer surfaces; The bottom of many root posts 1 is anchored at base 2 inside lines along bridge length direction standoff distance; The bottom of multiple inverted L-shaped back braces 3 is anchored at base 2 outside lefts along bridge length direction standoff distance, and the upper end of each inverted L-shaped back brace 3 is connected with the middle part of a root post 1; Bracket 4 is made up of two steel bands that are set in parallel in many root posts 1 inside upper part surface; 5, crossbeam is arranged on many root posts 1 position between two steel bands on bracket 4.

Described column 1 is encased structures, and interior outside is also provided with the stiffening rib for strengthening its opposing jolt capacity, with the inclination and distortion that reduces to be subject to produce after Vehicular impact.

Described crossbeam 5 is to be arranged alternately and to utilize steel plate and the rubber tile that bonding agent bonds together to form by some layers, so not only can have the intensity of resisting Vehicular impact, and due to the existence of rubber tile, also has certain elasticity.

Described inverted L-shaped back brace 3 is steel support.

The preparation method of the Collison fence for bridge now the utility model being provided is described below: first, column 1, inverted L-shaped back brace 3, steel bracket 4 and crossbeam 5 have been prefabricated in the factory, when prefabricated stand column 1 and inverted L-shaped back brace 3, the upper end of inverted L-shaped back brace 3 is welded in advance to column 1 middle part and becomes one, so that install; Secondly, before cast in situs base 2, first assembling reinforcement, and the Ribbed Bar that the lower edge reinforcing bar of base 2 and bridge flange plate 6 surfaces are reserved welds together, and reinforces short dowel and stirrup, to ensure construction stressed one afterwards at linkage section simultaneously; In addition, in the time of assembling reinforcement, reserve the anchorage point of column 1 and inverted L-shaped back brace 3, comprise spacer bars etc.; Next, column 1 good prefabrication and inverted L-shaped back brace 3 are placed on to anchorage point, settle spacer bars, anchor bolts etc. connect closely it, then two side templates are installed, concreting, reaches some strength and forms after base 2 until concrete, and bracket 4 and crossbeam 5 are anchored to many root posts 1 inside upper part surface successively.

Claims (4)

1. a Collison fence for bridge, is characterized in that: it comprises many root posts (1), base (2), multiple inverted L-shaped back brace (3), bracket (4) and crossbeam (5); Wherein base (2) is to build and the tabular structure of steel concrete that forms at bridge flange plate (6) outer surface; The bottom of many root posts (1) is anchored at base (2) inside line along bridge length direction standoff distance; The bottom of multiple inverted L-shaped back braces (3) is anchored at base (2) outside left along bridge length direction standoff distance, and the upper end of each inverted L-shaped back brace (3) is connected with the middle part of a root post (1); Bracket (4) is made up of two steel bands that are set in parallel in many root posts (1) inside upper part surface; Crossbeam (5) is arranged on and on many root posts (1), is positioned at the position between upper two steel bands of bracket (4).

2. Collison fence for bridge according to claim 1, is characterized in that: described column (1) is encased structures, and interior outside is also provided with the stiffening rib for strengthening its opposing jolt capacity.

3. Collison fence for bridge according to claim 1, is characterized in that: described crossbeam (5) is to be arranged alternately and to utilize steel plate and the rubber tile that bonding agent bonds together to form by some layers.

4. Collison fence for bridge according to claim 1, is characterized in that: described inverted L-shaped back brace (3) is steel support.