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Sound barrier upright post and preparation method of sound barrier upright post

A sound barrier and column technology, applied in the field of sound insulation materials, can solve the problems of increasing the safety maintenance cost of the sound barrier, hidden dangers of driving safety, and instability of the sound barrier, and achieve significant long-term economic benefits, high safety and reliability, and enhanced absorption. The effect of sound performance

Active Publication Date: 2015-07-15
JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Corrosion and loosening of embedded bolts will destabilize the sound barrier and constitute a driving safety hazard
This increases the cost of safety maintenance during the operation of the sound barrier

Method used

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  • Sound barrier upright post and preparation method of sound barrier upright post
  • Sound barrier upright post and preparation method of sound barrier upright post
  • Sound barrier upright post and preparation method of sound barrier upright post

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1 to Figure 2 as shown,

[0027] A sound barrier column, including a column body 1 and a sound-absorbing material 2 compounded on the side flange of the column facing the sound source, the cross section of the column body is H-shaped and made of active powder active concrete, and the active powder Active concrete includes cement, mineral powder, rice husk ash, natural sand, quartz powder, polycarboxylate superplasticizer, steel fiber and water. The weight ratio of each component is cement: mineral powder: rice husk ash: natural sand: Quartz powder: polycarboxylate superplasticizer: steel fiber: water=1: 0.15:0.23:1.15: 0.35:0.02:2.5:0.22.

[0028] The cement is ordinary portland cement of grade 52.5.

[0029] The rice husk ash is obtained by incinerating acid-treated rice husk at a constant temperature of 500°C for 2 hours and grinding for 20 minutes.

[0030] The natural sand is fine sand, and its gradation is in Zone III.

[0031] The column body 1...

Embodiment 2

[0039] Basically the same as Example 1, the difference is that the weight ratio of each component is cement: mineral powder: rice husk ash: natural sand: quartz powder: polycarboxylate superplasticizer: steel fiber: water=1:0.25: 0.28: 1.25: 0.40: 0.025: 3.0: 0.25; the cement is Portland cement of grade 52.5; the rice husk ash is obtained by incinerating acid-treated rice husk at 600°C for 2 hours and grinding for 20 minutes ; The reinforcing rib is a carbon fiber rib; the sound-absorbing material is a ceramsite sound-absorbing material; image 3 As shown, the planar flange on the side of the column body facing away from the sound source is provided with an embedded component insert and is cast and connected together with the bridge to form a whole. The preparation method is basically the same as that of Example 1, except that the non-metallic sound-absorbing material and the gelling material are mixed and then poured into a mold and pressurized at a pressure of 1.5KN. The ce...

Embodiment 3

[0041] It is basically the same as Example 1, except that the weight ratio of each component is cement: mineral powder: rice husk ash: natural sand: quartz powder: polycarboxylate superplasticizer: steel fiber: water=1:0.2: 0.25:1.2:0.38:0.022:2.75:0.23; the cement is ordinary portland cement of 52.5R grade; the rice husk ash is acid-treated rice husk incinerated at 700°C for 2 hours and ground for 20 minutes Obtained afterwards; Described reinforcing bar is basalt fiber bar; Described sound-absorbing material is sawdust sound-absorbing material; As Figure 4 As shown, the planar flange on the side of the column body facing away from the sound source is provided with an embedded part socket and connected with the bridge as a whole. The preparation method is basically the same as that of Example 1, except that the non-metallic sound-absorbing material and the gelling material are mixed well, then poured into a mold and pressurized at a pressure of 1.2KN. The cementitious mater...

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Abstract

The invention discloses a sound barrier upright post, comprising an upright post body and sound absorption materials; the upright post body is made of reactive powder concrete; the sound absorption materials are composited on wing edges, facing one side of a sound source, of the upright post; the cross section of the upright post body is of an H shape; the reactive powder concrete comprises the components of cement, mineral powder, rice hull ash, natural sand, quartz powder, polycarboxylate superplasticizer, steel fiber and water at the mass ratio of 1: (0.15-0.25): (0.23-0.28): (1.15-1.25): (0.35-0.40): (0.02-0.025): (2.5-3.0): (0.22-0.25). The sound barrier upright post is made of the non-metal materials, so the phenomena such as corrosion, aging and bolt looseness are avoided; the service life of the upright post is equal to or even longer than a main body structure, no maintenance is needed when the upright post is used and the long-term economic benefit is obvious; the upright post has extremely high safety and reliability.

Description

technical field [0001] The invention belongs to the field of sound insulation materials, and in particular relates to a sound barrier column and a preparation method thereof. Background technique [0002] At present, my country's high-speed rail sound barriers are mainly plug-in type noise barriers, and the plug-in type noise barriers need to use H-shaped steel columns as the barrier support, while the traditional pre-embedded bolts connecting the H-shaped steel columns and bridges are pre-embedded by the bridge construction unit during bridge production. The dimensional accuracy of the pre-embedded parts and the anti-corrosion treatment quality of the pre-embedded parts are not the same responsibility as the sound barrier production and installation unit, and quality control is difficult. However, the spacing of the steel columns is restricted by the precision of the embedded bolts, which may cause deviations exceeding the design tolerance. Increased, resulting in safety ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F8/00C04B28/00C04B28/04B28B1/087
Inventor 王卫东蒋立新张营
Owner JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG
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