CN218233155U - A kind of steel connection assembled concrete anti-collision guardrail - Google Patents

Abstract

The application discloses a steel-connected assembled concrete anti-collision barrier, comprising: an anti-collision barrier body, a bridge deck main body, a first connection assembly and a second connection assembly; the bridge deck main body is provided with a bridge block and a concrete shear force Groove; the first connection assembly includes anchor one, anchor two and prestressed tendons; the second connection assembly includes embedded angle steel, bolts and backing plates; the built-in energy dissipation components of the crash barrier body; the The bottom of the anti-collision guardrail body is provided with a concrete shear key, which is engaged with the concrete shear force groove on the main body of the bridge deck; the bolts connect the main body of the anti-collision guardrail and the main body of the bridge deck through anchor holes. The steel-connected assembled concrete anti-collision guardrail can effectively buffer the impact of vehicles by setting energy-dissipating components, reduce the risk of guardrail damage and the degree of car damage, and the prestressed connection components ensure the effectiveness of the connection and have a self-resetting function. The guardrail has a high degree of assembly , to facilitate construction and maintenance.

Description

A kind of steel connection assembled concrete anti-collision guardrail

technical field

The present application generally relates to the technical field of bridge structures, and in particular to a steel-connected assembled concrete anti-collision guardrail.

Background technique

The anti-collision barrier is an important facility of a highway bridge. Its main function is to prevent vehicles from breaking through the anti-collision barrier and falling below the bridge deck in the event of an accident, causing greater casualties. Therefore, the stability of the anti-collision barrier is very important. The traditional concrete anti-collision barrier has the following Disadvantages: The traditional concrete anti-collision barrier has high hardness, and lacks cushioning when the vehicle hits quickly, which may easily cause damage to the guardrail and the vehicle; the traditional construction technology of the anti-collision barrier requires on-site pouring, the construction period is long, and it has a great impact on the site environment. Green bridge construction concept.

Contents of the invention

In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a steel-connected assembled concrete anti-collision barrier with good stability and safety and convenient construction and installation.

A steel-connected assembled concrete anti-collision guardrail, comprising: an anti-collision guardrail body, a bridge deck main body, a first connection assembly and a second connection assembly; the bridge deck main body is provided with a bridge stopper and a concrete shear groove; the The first connecting assembly includes anchor one, anchor two and prestressed tendons, and anchor one and anchor two are respectively located at the top of the anti-collision barrier body and the bottom of the bridge block; the second connecting assembly includes embedded angle steel, Bolts and backing plates.

According to the technical solution provided by the embodiment of the present application, the energy-dissipating component is built into the crash barrier body; the built-in energy-dissipating component includes a front steel plate, a spring, and a rear steel plate.

According to the technical solution provided by the embodiment of the present application, the outer side of the rear steel plate is welded with vertical ribs, and the vertical ribs are provided with holes at equal intervals, and the positioning steel bars pass through the holes of the vertical ribs.

According to the technical solution provided in the embodiment of the present application, the bottom of the anti-collision barrier body is placed on the bridge block; the bottom of the anti-collision barrier body is provided with a concrete shear key, which is connected with the concrete shear groove on the main body of the bridge deck. snap-fit connection; the joint between the concrete shear key and the concrete shear groove is provided with a self-locking connector.

According to the technical solution provided by the embodiment of the present application, anchor bolt holes are respectively provided on the embedded angle steel and the main body of the bridge deck, and the bolts connect the body of the anti-collision guardrail and the main body of the bridge deck through the anchor bolt holes; Isometric set.

According to the technical solution provided by the embodiment of the present application, an anchoring space is left at the second anchorage at the lower part of the bridge stopper.

The beneficial effect of this application is:

The stability of the connection can be ensured by setting the first connecting component and the second connecting component; by setting the energy dissipation component, the impact energy of the vehicle can be buffered, and the damage to the guardrail and the vehicle can be reduced; the prestressed component can make the guardrail swing after a strong impact and weaken Impact force, improve safety. Prefabricated components are used during construction, which can be conveniently positioned through stoppers, concrete shear keys and self-locking devices. Bolts and prestressed connections are used in connection methods, and at the same time, on-site welding and on-site concrete pouring connections are avoided, which can ensure connection quality , Easy installation and maintenance.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

What Fig. 1 shows is a kind of schematic diagram of steel connection assembled concrete anti-collision guardrail;

Figure 2 shows a schematic diagram of energy-consuming components;

Reference numerals in the figure: 1, anti-collision guardrail body; 11, energy dissipation components; 111, front steel plate; 112, spring; 113, rear steel plate; 1131, vertical rib; 1132, hole; 1133, positioning steel bar 2, bridge deck Main body; 21, bridge block; 22, concrete shear groove; 3, first connecting component; 31, anchor one; 32, anchor two; 33, prestressed tendon; 4, second connecting component; 41, prestressed Buried angle steel; 42, bolt; 43, backing plate; 5, bolt hole.

detailed description

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Please refer to Figure 1 and Figure 2, the structure of a steel-connected assembled concrete crash barrier provided in this embodiment includes:

Anti-collision barrier body 1, bridge deck main body 2, first connecting assembly 3 and second connecting assembly 4; said bridge deck main body 2 is provided with bridge stopper 21 and concrete shear groove 22; said first connecting assembly 3 includes Anchor 1 31, anchor 2 32 and prestressed tendon 33, anchor 1 31 and anchor 2 32 are respectively located at the top of the anti-collision barrier body 1 and the bottom of the bridge block 21;

Among them, in the preferred embodiment of further improving the stability and safety of the anti-collision barrier structure, the first connecting component 3 ensures the effectiveness of the connection by setting prestress, and the impact time can be extended by the guardrail swing after the impact occurs. It has a self-resetting function, which further improves the stability and safety of the crash barrier structure.

The second connection assembly 4 includes embedded angle steel 41, bolts 42 and backing plate 43;

The steel-connected assembled concrete anti-collision guardrail can effectively buffer the impact of vehicles by setting energy-dissipating components, reduce the risk of guardrail damage and the degree of car damage, and the prestressed connection components ensure the effectiveness of the connection and have a self-resetting function. The guardrail has a high degree of assembly , to facilitate construction and maintenance.

The crash barrier body 1 has a built-in energy dissipation component 11; the built-in energy dissipation component 11 includes a front steel plate 111, a spring 112, and a rear steel plate 113.

The outer side of the rear steel plate 113 is welded with vertical ribs 1131, and the vertical ribs 1131 are provided with equally spaced holes 1132, and the positioning steel bars 1133 pass through the holes of the vertical ribs 1131; Erecting steel bars to form a steel bar skeleton can accurately locate the position of the energy-dissipating component 11 during prefabrication to facilitate construction; the distance between the energy-dissipating component 11 and the inner surface of the anti-collision guardrail body 1 should not be too large; the front steel plate of the energy-dissipating component 11 111. The selection of the thickness of the rear steel plate 113 and the specification of the spring 112 should take into account the consumption capacity of the energy-dissipating component 11 on impact energy. By installing the energy-dissipating component, it can effectively buffer the impact of the vehicle and reduce the risk of damage to the guardrail and the degree of damage to the car.

The bottom of the anti-collision guardrail body 1 is placed on the bridge block 21; the bottom of the anti-collision guardrail body 1 is provided with a concrete shear key 12, which is engaged with the concrete shear force groove 22 on the bridge deck main body 2; A self-locking connector 13 is provided at the joint between the concrete shear key 12 and the concrete shear groove 22 . By setting the concrete shear key 12 and the concrete shear groove 22, the anti-collision barrier body 1 can be placed on the bridge deck main body 2 quickly and accurately, and the self-locking connector 13 can be set to temporarily fix the anti-collision barrier body 1, which is convenient Personnel operation, thus further improving the convenience of installation.

The embedded angle steel 41 and the bridge deck main body 2 are respectively provided with anchor bolt holes 5, and the bolts 42 connect the anti-collision guardrail body 1 and the bridge deck main body 2 through the anchor bolt holes 5; the bolts 42 are equidistant along the longitudinal direction of the bridge. Setting; the top surface of the bolt 42 is set at the same height as the surface of the bridge deck main body 2; a water-stop strip is provided at the intersection of the inner side of the crash barrier body 1 and the top surface of the bridge deck main body 2.

An anchorage space is left at the anchorage two 32 at the bottom of the bridge block 21 .

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solution formed by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (6)

1. The utility model provides a steel is connected assembled concrete crash barrier which characterized in that includes: the anti-collision guardrail comprises an anti-collision guardrail body (1), a bridge deck main body (2), a first connecting assembly (3) and a second connecting assembly (4);

the bridge deck main body (2) is provided with a bridge stop block (21) and a concrete shear groove (22);

the first connecting assembly (3) comprises a first anchorage device (31), a second anchorage device (32) and a prestressed tendon (33), wherein the first anchorage device (31) and the second anchorage device (32) are respectively positioned at the top of the anti-collision guardrail body (1) and at the bottom of the bridge stop block (21);

the second connecting assembly (4) comprises embedded angle steel (41), a bolt (42) and a base plate (43).

2. The steel connection fabricated concrete crash barrier as recited in claim 1, characterized in that the crash barrier body (1) is built-in with energy dissipation components (11);

the built-in energy dissipation assembly (11) comprises a front steel plate (111), a spring (112) and a rear steel plate (113).

3. The steel connection assembly type concrete crash barrier as recited in claim 2, wherein vertical ribs (1131) are welded on the outer side of the rear steel plate (113), the vertical ribs (1131) are provided with holes (1132) with equal intervals, and the positioning steel bars (1133) pass through the holes of the vertical ribs (1131).

4. The steel connection fabricated concrete crash barrier as recited in claim 1, characterized in that the bottom of said crash barrier body (1) is placed on a bridge block (21);

the concrete shear key (12) is arranged at the bottom of the anti-collision guardrail body (1) and is connected with the concrete shear groove (22) on the bridge deck main body (2) in a clamping manner;

and a self-locking connecting piece (13) is arranged at the joint of the concrete shear key (12) and the concrete shear groove (22).

5. The steel connection assembly type concrete crash barrier as recited in claim 1, wherein the embedded angle steel (41) and the bridge deck main body (2) are respectively provided with an anchor bolt hole (5), and the bolt (42) is connected with the crash barrier main body (1) and the bridge deck main body (2) through the anchor bolt hole (5); the bolts (42) are arranged at equal intervals along the longitudinal direction of the bridge.

6. The steel connection fabricated concrete crash barrier as recited in claim 1, wherein an anchoring space is left at the second anchorage device (32) at the lower part of the bridge chock (21).

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