Ultra-high strength concrete (UHPC) anti-collision wall

An ultra-high-strength, concrete technology, used in roads, traffic signals, road safety devices, etc., to solve problems such as road water accumulation, poor impact buffer capacity, and lack of drainage structures.

Active Publication Date: 2021-06-08
JIANGXI LONGZHENG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the separation zone on both sides of the road, anti-collision walls are generally set up to separate them. The existing anti-collision walls are designed more traditionally, just in the shape of low walls poured with cement. It is easy to break after a vehicle collides. At the same time, the anti-collision wall cannot realize the function of purifying the air, and does not have a drainage structure

Method used

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  • Ultra-high strength concrete (UHPC) anti-collision wall
  • Ultra-high strength concrete (UHPC) anti-collision wall
  • Ultra-high strength concrete (UHPC) anti-collision wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0033] Such as Figure 1-3 As shown, the ultra-high-strength concrete UHPC anti-collision wall provided by the present invention includes a composite wall 1, and a support seat 2 is fixedly connected to the lower side of the composite wall 1. 2 has better stability, so that the support seat 2 is not easy to fall over when the composite wall 1 is impacted. The composite wall 1 includes two parallel UHPC boards 11 and a rubber board 12. The UHPC board 11 has strong Abrasiveness and light weight make it convenient for the staff to move the UHPC board 11, and also make the UHPC board 11 less prone to wear after a long-term trial. The rubber board 12 is fixedly connected between two UHPC boards 11, and the rubber board 12 has Excellent cushioning and stability, when the UHPC board 11 is impacted. The UHPC plate 11 transmits the impact to the rubber plate 12, and the rubber plate 12 buffers the impact without causing damage. One of the UHPC plates 11 is provided with a plurality of...

Embodiment 2-1

[0053] The preparation method of UHPC plate, the steps are as follows:

[0054] (1) Add 100 parts of Portland cement, 50 parts of fly ash, 3 parts of expansion agent, 10 parts of silica fume, 60 parts of quartz sand, 30 parts of steel fiber, and 60 parts of aggregate into the mixer at 200r / min After fully mixing for 100 seconds, Mixture 1 was obtained;

[0055] (2) Add 3 parts of water reducer to 30 parts of water, and mix well to obtain Mixture 2;

[0056] (3) Add 1 part of amino-containing polybenzimidazole into 5 parts of dimethyl sulfoxide, and after fully dissolving, mixture 3 is obtained;

[0057] (4) Add 1 part of sulfonated polyphenylene and 1 part of KH-560 into 10 parts of ethanol, and mix thoroughly to obtain Mixture 4;

[0058] (5) After fully mixing the above-mentioned mixtures 1, 2, 3 and 4 at 200r / min at 50°C for 150 seconds, the ultra-high performance concrete is obtained;

[0059] (6) After the ultra-high performance concrete is molded, shaped and demolded,...

Embodiment 2-2

[0061] The preparation method of UHPC plate, the steps are as follows:

[0062] (1) Add 100 parts of Portland cement, 54 parts of fly ash, 7 parts of expansion agent, 13 parts of silica fume, 77 parts of quartz sand, 35 parts of steel fiber, and 78 parts of aggregate into the mixer at 200r / min After fully mixing for 100 seconds, Mixture 1 was obtained;

[0063] (2) Add 6 parts of water reducer to 65 parts of water, and mix well to obtain Mixture 2;

[0064] (3) Add 3 parts of amino-containing polybenzimidazole into 8 parts of dimethyl sulfoxide, and after fully dissolving, mixture 3 is obtained;

[0065] (4) Add 3 parts of sulfonated polyphenylene and 4 parts of KH-560 into 12 parts of ethanol, and mix thoroughly to obtain Mixture 4;

[0066] (5) After fully mixing the above-mentioned mixtures 1, 2, 3 and 4 at 200r / min at 50°C for 150 seconds, the ultra-high performance concrete is obtained;

[0067] (6) After the ultra-high performance concrete is molded, shaped and demold...

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Abstract

The invention discloses an ultra-high strength concrete (UHPC) anti-collision wall which comprises a composite wall body; a supporting seat is fixedly connected to the lower side of the composite wall body; the composite wall body comprises two UHPC plates arranged in parallel and a rubber plate, and the rubber plate is fixedly connected between the two UHPC plates. The UHPC anti-collision wall has the advantages that in the working process of the UHPC anti-collision wall, buffer devices arranged in through holes can effectively buffer the borne impact force, so that the anti-collision wall is not prone to being broken after being collided by a vehicle; meanwhile, a flow guide device arranged on one side of the supporting seat has the air purification performance, and the anti-collision wall is provided with a drainage structure, so that on one hand, the anti-collision wall absorbs harmful gas generated by an automobile and prevents tail gas discharged by the automobile from polluting the road environment, and on the other hand, the anti-collision wall can drain rainwater accumulated nearby the anti-collision wall and prevents the situation that serious water accumulation on the road is not beneficial to running of the automobile.

Description

technical field [0001] The invention relates to the technical field of anti-collision walls, in particular to an ultra-high-strength concrete UHPC anti-collision wall. Background technique [0002] In the separation zone on both sides of the road, anti-collision walls are generally set up to separate them. The existing anti-collision walls are designed more traditionally, just in the shape of low walls poured with cement. It is easy to break after a vehicle collides. At the same time, the anti-collision wall cannot realize the function of purifying the air, and does not have a drainage structure. It cannot absorb harmful gases generated by the car, and cannot discharge the rainwater accumulated near the wall. On the one hand, it leads to vehicle emissions. The exhaust gas pollutes the road environment. On the other hand, the rainwater will rise higher and higher due to the resistance of the wall, resulting in serious water accumulation on the road, which is not conducive to ...

Claims

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Application Information

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IPC IPC(8): E01F15/08E01F15/14E01F9/619C04B28/04C04B24/28C04B24/16C04B24/26
CPCE01F15/083E01F15/08E01F15/088E01F15/14E01F15/146E01F9/619C04B28/04C04B2201/50C04B2201/52C04B18/08C04B2103/0068C04B18/146C04B14/06C04B14/48C04B14/303C04B2103/302C04B24/28C04B24/166C04B24/42C04B24/16C04B24/02Y02A20/108
Inventor 容七英罗春平彭向阳陈勇章慧芹
Owner JIANGXI LONGZHENG SCI & TECH DEV
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