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A new type of composite material for improving underwater anti-knock performance of wading buildings

A composite material and high-performance technology, which is used in new underwater anti-explosion protection materials and its application in wading buildings, which can solve the problem of difficult to resist short-range underwater explosive loads, loss of clipping protection performance, foam concrete Low strength and other problems, to achieve the effect of improving underwater anti-knock performance, controllable cost, and simple layout

Active Publication Date: 2020-10-13
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the foam concrete is placed in water, due to the penetration of water, the gap will be filled with water, and the clipping protection performance will be lost; and the strength of the foam concrete is low, it is difficult to resist the close-range underwater explosion load

Method used

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  • A new type of composite material for improving underwater anti-knock performance of wading buildings
  • A new type of composite material for improving underwater anti-knock performance of wading buildings
  • A new type of composite material for improving underwater anti-knock performance of wading buildings

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 2 , 3 As shown, the design characteristic parameters of a certain bridge pier are: the elevation of the top of the pier is 1286 m, the elevation of the bottom of the pier is 1266 m, the section of the pier is circular, and the radius is 1.0 m. Follow the steps below to implement:

[0035] The new composite material of the present invention is used within the thickness range of 0.3 m outside the pier as the protective layer of the pier; the main body of the pier is made of ordinary concrete material.

[0036] During the construction of the bridge pier, zoned pouring was adopted, and a new type of high-strength composite material containing high-performance hollow glass microspheres was used within 0.3 m outside the bridge pier; conventional pouring materials were used in the main area.

[0037] When the bridge pier is subjected to underwater explosion loads, high-strength composite materials can resist larger explosion loads. At the same time, a large ...

Embodiment 2

[0039] Such as Figure 4 As shown, the design characteristic parameters of an underwater tunnel are: span 13.85 m, side wall thickness 0.85 m, roof thickness 1.1 m, floor thickness 1.2 m, crest width 15 m. Follow the steps below to implement:

[0040] The top surface of the tunnel and the outer wall of the side wall adopt the new composite material of the present invention as the protective layer of the tunnel, and the thickness of the protective layer is 0.3 m; the main body of the tunnel is made of ordinary concrete material.

[0041] During the construction of the underwater tunnel, layered pouring is adopted, and the outer protective layer of the tunnel is made of new high-strength composite materials containing high-performance hollow glass beads; the main area of ​​the tunnel is made of conventional pouring materials.

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Abstract

The invention provides a novel composite material for improving underwater antiknock performance of wading buildings. Based on high-strength reactive concrete, the novel composite material is characterized by being prepared through isometrically replacing a certain proportion of fine sand in the concrete by high-performance hollow glass microbeads in an equal volume and then carrying out mixing. According to the novel composite material, an appropriate quantity of high-performance hollow glass microbeads are mixed on the basis of high-strength reactive powder concrete, so that the obtained novel composite material has high compressive strength and strong anti-corrosion ability, and is resistant to direct impaction effects of blast loads caused by near-field underground contact and non-contact; and the high-performance hollow glass microbeads in the composite material can be used to clip and reflect shock waves, so that the novel composite material is capable of significantly improvingthe antiknock performance of the buildings, and is especially suitable for the underwater antiknock performance of the wading buildings.

Description

technical field [0001] The invention belongs to the field of anti-explosion protection of underwater engineering, and in particular relates to a novel material for anti-explosion protection under water and its application on wading structures. Background technique [0002] Due to the nearly incompressible characteristics of the water medium, it becomes a good conductor of explosion energy transmission. The peak pressure and impulse of the shock wave of the underwater explosion are much larger than those of the air explosion, and there is a secondary loading of the underwater bubble pulse, which is more destructive to the structure. powerful. In the field of structural protection, the anti-knock protection performance of wading buildings (structures) has increasingly attracted people's attention. [0003] In order to improve the anti-blast performance of important structures, scholars at home and abroad have proposed a variety of protective measures against air explosion con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/24C04B111/74
CPCC04B14/24C04B28/04C04B2111/74C04B14/06C04B18/146C04B2103/302
Inventor 王高辉杨广栋卢文波严鹏陈明
Owner WUHAN UNIV