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A kind of preparation method of railway non-metallic sound-absorbing board

A sound-absorbing panel and non-metallic technology, which is applied in the field of preparation of non-metallic sound-absorbing panels for railways, can solve the problem of unsatisfactory compressive strength and appearance quality of sound-absorbing coefficient products, the steel skeleton is not a whole, and honeycomb is easy to appear Surface and other problems, to achieve the effect of improving appearance quality, good sound absorption effect, and improving strength

Active Publication Date: 2019-08-23
CHINA TIESIJU CIVIL ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its low cost and good noise reduction effect, non-metallic sound barriers gradually increase their share in the market; the existing non-metallic sound barriers on the market mainly include GRC concrete sound barriers, cement wood particle board sound barriers, and perlite sound barriers. etc., the sound absorption coefficient, product compressive strength and appearance quality are not satisfactory, and the surface of the existing sound barrier is prone to honeycomb pockmarks after forming, the internal steel skeleton is not a whole during the forming process, and the product strength is affected after layered pouring

Method used

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  • A kind of preparation method of railway non-metallic sound-absorbing board
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  • A kind of preparation method of railway non-metallic sound-absorbing board

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Effect test

Embodiment 1

[0037] Embodiment 1: a kind of preparation method of railway non-metallic sound-absorbing board, comprises the following steps:

[0038] Step 1: Install the mold, the bottom support is welded with channel steel and steel plate, the bottom mold is made of EPDM rubber mold, and the side mold is made of aluminum alloy forming mold. Install and adjust the base to be in a horizontal state;

[0039] Step 2: Assembling the reinforcement mesh 2, using φ4 reinforcement to assemble the reinforcement mesh 2 with a cuboid integral connection structure, with 4 transverse reinforcements on the front side, with a spacing of 1000 mm, and 9 horizontal reinforcements on the rear side, with a spacing of 500mm, 2 transverse steel bars are provided on the upper and lower sides with a spacing of 500mm, and 9 longitudinal steel bars perpendicular to the horizontal steel bars are provided on the front, rear, upper and lower sides with a spacing of 500mm. The front side of the steel mesh sheet 2 is i...

Embodiment 2

[0052] Embodiment 2: a kind of preparation method of railway non-metallic sound-absorbing board, comprises the following steps:

[0053] Step 1: Install the mold, the bottom support is welded with channel steel and steel plate, the bottom mold is made of EPDM rubber mold, and the side mold is made of aluminum alloy forming mold. Install and adjust the base to be in a horizontal state;

[0054] Step 2: Assembling the reinforcement mesh sheet 2, using φ4 reinforcement to assemble the reinforcement mesh sheet 2 with a cuboid integral connection structure, with 4-6 transverse reinforcement bars on the front side, with a spacing of 1000 mm, and 11 transverse reinforcement bars on the rear side, The spacing is 500mm, and the upper and lower sides are equipped with 4 transverse reinforcements with a spacing of 500mm. The front, rear, upper and lower sides are equipped with 11 longitudinal reinforcements perpendicular to the horizontal reinforcements, with a spacing of 500mm. , insta...

Embodiment 3

[0067] Embodiment 3: a kind of preparation method of railway non-metallic sound-absorbing board, comprises the following steps:

[0068] Step 1: Install the mold, the bottom support is welded with channel steel and steel plate, the bottom mold is made of EPDM rubber mold, and the side mold is made of aluminum alloy forming mold. Install and adjust the base to be in a horizontal state;

[0069] Step 2: Assembling the steel mesh 2, using φ4 steel bars to assemble the steel mesh 2 with a cuboid integral connection structure, with 5 horizontal steel bars on the front side with a spacing of 1000mm, and 10 horizontal steel bars on the rear side with a spacing of 500mm, 3 horizontal reinforcements are provided on the upper and lower sides with a spacing of 500mm, and 10 longitudinal reinforcements perpendicular to the horizontal reinforcements are provided on the front, rear, upper and lower sides with a spacing of 500mm. The front side of the steel mesh sheet 2 is installed downwar...

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Abstract

The invention discloses a nonmetal sound absorption plate for railway. The nonmetal sound absorption plate comprises a concrete plate, steel bar mesh pieces, sound absorption cotton and foam plates, wherein the concrete plate is formed by mixed pouring of concrete, coal ash and an early strength agent; each steel bar mesh piece adopts a cuboid integral type connection structure and is arranged in the concrete plate; the sound absorption cotton and the foam plates are arranged in a hollow part of the concrete plate; and the sound absorption cotton is connected to the inner wall of a panel layer through a hydrophobic black felt layer. The nonmetal sound absorption plate has the following advantages: the coal ash and the early strength agent are added into the concrete, so that the concrete strength is enhanced, the honey-comb and blasted surfaces are reduced, and the appearance quality is improved; the hydrophobic black felt layer is added between the sound absorption cotton and the panel layer of the concrete plate to achieve a waterproof effect, so that the sound absorption cotton is not damped on a rainy day; each steel bar adopts the cuboid integral type connection structure, so that the compressive strength of the sound absorption plate is improved; the foam plates are added, so that the requirement of surface density can be met under the condition of meeting the strength; and a trapezoidal bulge and a trapezoidal groove are arranged, so that the superposition of sound absorption plates is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a railway non-metallic sound-absorbing board. Background technique [0002] With the rapid development of my country's railway, highway construction and urban traffic, it has brought people convenient travel and at the same time brought a lot of traffic noise pollution to people. People have been using various measures to reduce traffic noise. Sound barrier technology is a A very simple and effective noise reduction method. Due to its low cost and good noise reduction effect, non-metallic sound barriers gradually increase their market share; the existing non-metallic sound barriers on the market mainly include GRC concrete sound barriers, cement wood particle board sound barriers, and perlite sound barriers. etc., the sound absorption coefficient, product compressive strength and appearance quality are not satisfactory, and the surface of the existing sound barrier is prone to honeycomb pitting after for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F8/00
CPCE01F8/0017E01F8/0082
Inventor 简敏
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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