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Explosion-proof reinforced concrete with negative Poisson's ratio effect and preparation method thereof

A technology of reinforced concrete and negative Poisson's ratio, applied in buildings, building reinforcements, building components, etc., to achieve the effect of improving interface adhesion and deformation synergy

Active Publication Date: 2018-12-11
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of construction, there is no relevant report about negative Poisson's ratio concrete, and its application in explosion-proof engineering is unheard of

Method used

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  • Explosion-proof reinforced concrete with negative Poisson's ratio effect and preparation method thereof
  • Explosion-proof reinforced concrete with negative Poisson's ratio effect and preparation method thereof
  • Explosion-proof reinforced concrete with negative Poisson's ratio effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A steel structure unit with a negative Poisson’s ratio effect, the steel structure unit is composed of two layers of steel hinges arranged in parallel, the layer spacing is 100mm, the steel hinge is a hexagonal concave structure, and the diameter of the circumscribed circle is 100mm; The concave angle is β 1 =90°, the steel bar is No. 10 hot-rolled smooth round steel bar.

[0046] Explosion-proof reinforced concrete with negative Poisson's ratio effect, said explosion-proof reinforced concrete is composed of a plurality of above-mentioned reinforced structural units poured with concrete. Each steel bar structure unit also includes vertically fixed steel bars, and the plane of the steel bar hinges in each layer is perpendicular to the fixed steel bars; the direction of the concave angle is consistent with the propagation direction of the explosion load. The plurality of reinforced structural units that make up the explosion-proof reinforced concrete are directional and ...

Embodiment 2

[0065] The difference from Example 1 is the steel structure unit with negative Poisson’s ratio effect, the steel structure unit is composed of three layers of steel hinges arranged in parallel, the layer spacing is 50mm, and the diameter of the circumscribed circle of the concave structure is 120mm , the concave angle is β 1 = 120°, the steel bar is No. 12 waste heat treated steel bar.

[0066] Explosion-proof reinforced concrete with negative Poisson's ratio effect, the plurality of steel structure units that make up the explosion-proof reinforced concrete are directional and ordered interlayer arrays (reinforced concrete with special concave / ordinary structural layers alternately arranged in order), such as Figure 6 as shown in b.

[0067] In the preparation method of explosion-proof reinforced concrete with negative Poisson's ratio effect, the primer used in the step (3) is a polyphenolic oxygen primer.

Embodiment 3

[0069] The difference from Example 1 is the steel structure unit with negative Poisson’s ratio effect, the steel structure unit is composed of 4 layers of steel hinges arranged in parallel, the layer spacing is 30mm, and the diameter of the circumscribed circle of the concave structure is 130mm , the concave angle is β 1 =150°, the steel bar is No. 14 cold-rolled ribbed steel bar.

[0070] Explosion-proof reinforced concrete with negative Poisson's ratio effect, the plurality of steel structure units that make up the explosion-proof reinforced concrete are directional and ordered interlayer cross mosaic arrays (special concave / ordinary structure ABA bar mosaic arrangement type reinforced concrete) ,Such as Figure 6 as shown in c.

[0071] In the preparation method of explosion-proof reinforced concrete with negative Poisson's ratio effect, the primer used in the step (3) is an amino alkyd surfacer.

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Abstract

The invention discloses a steel bar structure unit with a negative poisson's ratio effect. The steel bar construction unit with the negative poisson's ratio effect is composed of parallelly arranged n layers of steel bar hinges, the steel bar hinges are of axisymmetric polygon structures with inward concave angles. The layer interval is 30mm-150mm; the symmetrical polygon structures are six-rowed inward concave structures, eight-rowed inward concave structures, ten-rowed inward structures or twelve-rowed inward concave structures. The inward concave angles are beta<1>=90 degrees-150 degrees, beta<2>=100 degrees-160degrees, beta<3>=110 degrees-160degrees and beta<4>=110 degrees-170degrees; the diameters of circumcircles of the axisymmetric polygon structures are 90 mm-160 mm. The invention further discloses an anti-explosion steel bar concrete with a negative poisson's ratio effect composed of the steel bar structure unit poured with concrete. Compared with normal steel bar concrete, the storage modulus of the anti-explosion steel bar concrete can be maximized to 483%, and thus the ability to resist and absorb explosion load energy is sharply improved.

Description

technical field [0001] The invention belongs to the field of construction, and relates to a reinforced concrete and a preparation method thereof, in particular to an explosion-proof reinforced concrete with a negative Poisson's ratio effect and a preparation method thereof. Background technique [0002] In recent years, domestic and international explosions have emerged one after another. The most direct measure against personal and property damage caused by explosive loads is to design effective explosion-proof materials for infrastructure. However, the design concept of traditional concrete is mainly to improve its own strength, which cannot play a positive role in the dredging of the explosion process and the elimination of energy transfer. From the perspective of mechanics, the basic problem of explosion is energy rather than force. Therefore, when the load strength exceeds the strength critical value, traditional concrete realizes energy release by directly releasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/06E04C1/39
CPCE04C1/39E04C5/0609
Inventor 马衍轩张颖锐雷欣王金华陈厚坤王凯王强
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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