Novel UHPC light composite beam

An ultra-high-strength concrete beam technology, applied in the field of composite beams, can solve problems such as weak compressive capacity and reduced service life of composite beams, achieve good flexural strength and compressive strength, improve compressive strength, and improve system crossover joint effect

Active Publication Date: 2021-06-11
JIANGXI LONGZHENG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composite beams are mainly responsible for compressive resistance during use, and the connection between the two beam bodies of composite beams is often weak in compression, which greatly reduces the overall service life of composite beams

Method used

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  • Novel UHPC light composite beam
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  • Novel UHPC light composite beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0036] like Figure 1-Figure 5 As shown, the novel ultra-high-strength concrete UHPC light composite beam provided by the present invention includes a first beam body and a second beam body, and the first beam body includes a first vertical plate 11 and two square first support plates 12, The first vertical plate 11 is welded and fixed between the two first support plates 12, and the first concrete beam 3 is placed horizontally on the upper side of the first support plate 12; the second beam body includes two parallel arranged second vertical plates 21 and two A square second support plate 22, two second vertical plates 21 are welded and fixed between the two second support plates 22, and the second concrete beam 4 is placed horizontally on the upper side of the second support plate 22. Both sides of the two second vertical plates 21 protrude from the outside of the two second supporting plates 22 , a connecting channel 211 is formed between the two second vertical plates 21 ,...

Embodiment 2-1

[0056] The preparation method of the first concrete beam or the second concrete beam, the steps are as follows:

[0057] (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, a mixture is obtained;

[0058] (2) 3 parts of water reducing agents are added to 30 parts of water, and after fully mixing, mixture two is obtained;

[0059] (3) 1 part of amino-containing polybenzimidazole is added to 5 parts of dimethyl sulfoxide, and after fully dissolving, mixture three is obtained;

[0060] (4) 1 part of sulfonated polyphenylene and 1 part of KH-560 are added to 10 parts of ethanol, and after fully mixing, mixture four is obtained;

[0061] (5) After fully mixing the above-mentioned mixtures one, two, three and four at 200 r / min at 50 ° C for 150 seconds, the ultra-high performance conc...

Embodiment 2-2

[0064] The preparation method of the first concrete beam or the second concrete beam, the steps are as follows:

[0065] (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, a mixture is obtained;

[0066] (2) 6 parts of water reducing agents are added to 65 parts of water, and after fully mixing, mixture two is obtained;

[0067] (3) 3 parts of amino-containing polybenzimidazoles are added to 8 parts of dimethyl sulfoxide, and after fully dissolving, mixture three is obtained;

[0068] (4) 3 parts of sulfonated polyphenylene and 4 parts of KH-560 are added to 12 parts of ethanol, and after fully mixing, mixture four is obtained;

[0069] (5) After fully mixing the above-mentioned mixtures one, two, three and four at 200 r / min at 50 ° C for 150 seconds, the ultra-high performance...

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Abstract

The invention provides a novel UHPC light composite beam which comprises a first beam body and a second beam body; the first beam body comprises a first vertical plate and two first supporting plates; the first vertical plate is fixedly connected between the two first supporting plates; a first concrete beam is arranged on the upper sides of the first supporting plates; the second beam body comprises two second vertical plates and two second supporting plates; the two second vertical plates are fixedly connected between the two second supporting plates; second concrete beams are arranged on the upper sides of the second supporting plates; the first beam body and the second beam body can be connected in an inserted and matched mode; and the first concrete beam and the second concrete beam are connected through connecting parts. According to the novel UHPC light composite beam provided, when the first beam body and the second beam body are connected, the connecting parts are partially overlapped, so that the compressive strength of the connecting parts of the light composite beam is improved, and the overall service life of the composite beam is prolonged.

Description

technical field [0001] The invention relates to the technical field of composite beams, in particular to a novel ultra-high-strength concrete UHPC light composite beam. Background technique [0002] Composite beam, also known as joint beam. It is a beam composed of two different materials or a combination of different processes. It is a beam that is composed of steel and concrete and is subjected to common forces, including steel-reinforced concrete beams and steel-concrete composite beams. Steel-concrete composite beams are made of concrete slabs. Beams that are combined and work together with steel beams. The composite beam mainly bears the compressive effect during use, and the connection parts between the two beam bodies of the composite beam are often weak in compressive capacity, which greatly reduces the overall service life of the composite beam. SUMMARY OF THE INVENTION [0003] In order to solve the technical problems existing in the background technology, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/20E04C3/22C04B28/04C04B24/26C04B24/22C04B24/12
CPCE04C3/20E04C3/22C04B28/04C04B24/2623C04B24/22C04B24/128C04B2201/50C04B18/08C04B2103/0068C04B18/146C04B14/06C04B14/48C04B14/303C04B2103/302C04B24/16C04B24/026
Inventor 容七英容晓芳蔡志丁容志文蔡春燕
Owner JIANGXI LONGZHENG SCI & TECH DEV
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