Specializing in the production of wire mesh fence and sound barriers
Do you know what factors affect the sound insulation effect of highway noise barriers?
2022-07-08
Do you know what factors affect the sound insulation effect of highway sound barriers?
What factors affect the sound insulation effect of highway sound barriers?
1. Sound barrier material
All objects have a sound insulation effect, so any material can be called a sound insulation material, but the sound insulation effect of different materials is very different. The sound barrier we usually talk about is a wooden board with sound insulation exceeding 30dB. Therefore, the choice of material for the noise reduction sound barrier is also very important.
2. Distance between the noise source and the sound barrier
Actually, this is common knowledge. As we all know, the farther away from the noise source, the quieter it will be. Therefore, the direct distance between the noise source and the road sound barrier is a condition that affects the effect.
3. Height of the sound barrier
The height of the sound barrier must be higher than the noise source to produce a sound insulation effect.
4. Rigidity of sound barrier installation
When installing road sound barriers, there should be no gaps at the joints, which will affect the noise reduction effect of the sound barrier.
5. Post-maintenance
Sound barriers are used outdoors. For example, some bad weather such as acid rain, car accidents, and dust will affect the effect. Therefore, ensuring the shape, rust, and deformation of the sound barrier on the highway is also a very important step.
What are the structural designs for producing sound barriers?
1. The structural design of the sound barrier should comply with the provisions of the current relevant standards.
2. The structural form should be determined according to the requirements of the project and the environment. The sound-absorbing composite structure should use integral components.
3. The structural design should consider the self-weight, wind load, train pulsation, and other loads. The design load of the guardrail should be comprehensively considered based on the loads that may act simultaneously during use, and the design should be carried out under unfavorable conditions.
4. The connection between the bridge guardrail and the bridge, and the connection between the roadbed sound barrier and the foundation should use cast-in-place concrete connectors or bolted connectors.
What are the components of highway sound barriers?
Highway sound barriers are mainly composed of three parts: the foundation, the column, and the sound barrier board. The foundation is the main load-bearing structure of the elevated sound barrier. It can be designed separately or designed at the same time as the road design. It is the force-bearing component of the column-type sound barrier, and it is firmly connected to the foundation through welding to meet the force requirements of the sound barrier.
The design of the highway sound barrier board is mainly composed of height, style, and material. Increasing the height will affect the sound insulation and noise reduction effect. Adding an arc shape to the top can effectively block the diffraction sound of traffic noise.
Highway sound barriers have many installation accessories. Different installation requirements and different regions have different requirements for installation accessories. For example, cover plates and rubber pads are installed as required, safety frames and column caps are necessary accessories, and there are also screws and chemical bolts. These are determined according to different heights and installation requirements. Since these are all accessories, the Price will not account for a large proportion, so the sound barrier will include these in the quotation.
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