2022/09/08

What are the characteristics of high-speed sound barriers? What should be paid attention to during installation?

What are the characteristics of high-speed sound barriers? What should be paid attention to during installation? High-speed sound barriers have the characteristics of reducing road traffic noise and improving the aesthetics of road construction. However, some issues need to be paid attention to during the installation process, such as the foundation should be built synchronously with the roadbed. Next, we will introduce the relevant content in detail. Characteristics of high-speed sound barriers. 1. Reduce driving noise on roads Ensure that drivers can accurately judge various driving behaviors, thereby improving driving safety. Therefore, after the introduction of high-speed sound barriers for installation and processing, its technical characteristics will be more diversified, and its application on different roads will be more extensive. It can be seen that the design technology is more advanced and scientific. 2. Improve the aesthetics of road construction Since high-speed sound barriers are mainly installed on both sides of the road, it can be said that there will be a great improvement in safety and aesthetics. Therefore, in the processing and design process, the manufacturer can match the appropriate color tone according to the customer's requirements to show a more beautiful and fashionable effect, which conforms to the effect of modern road decoration, and the characteristics shown will be better and better. 3. During the processing of high-speed sound barriers, classic spray lines are used, bringing a sense of flatness and

2022/08/30

What are the advantages of high-speed sound barriers, and what is their environmental impact?

What are the advantages of high-speed sound barriers, and what is their environmental impact? High-speed sound barrier combination design is flexible and free, can effectively control sound diffraction, and has a long service life. Its environmental impact includes humidity, wind volume, and temperature. The advantages and environmental impacts of high-speed sound barriers are described below. High-speed sound barriers adopt a combination design, which is flexible and convenient for installation and disassembly. The overall shape of the high-speed sound barrier is straight, and the upper plate is arc-shaped, which can effectively control sound diffraction. It not only has good sound insulation and sound absorption effects, but also is very durable and has a long service life. It is also necessary to combine according to the principles of color and shape to form a harmonious effect with the surrounding environment. Energy-saving and environmentally friendly, because the raw materials used in production are green and pollution-free, and the production process has high-temperature heat generation, which can effectively kill toxic gases. Short installation cycle, can effectively save labor costs. The underground part and the ground beam of the foundation are constructed by the method of digging holes and trenches. In order to minimize the disturbance to the roadbed soil, it is recommended to use manual shoveling for pile foundation. In the construction of foundation and floor beams, the advanced part should be poured with concrete of the same grade. When pouring pile foundation concrete, iron sleeves can be used to protect the earth wall to prevent soil particles from mixing into the concrete. Highway

2022/08/19

What are the characteristics of a high-speed sound barrier?

What are the characteristics of a high-speed sound barrier? High-speed sound barriers are characterized by their high sound insulation, high sound absorption coefficient, vibration isolation, fire resistance, water resistance, dust resistance, corrosion resistance, aesthetics, durability, and good sealing performance. The construction of high-speed sound barriers should pay attention to the underground part of the foundation and the foundation beam. We will introduce the relevant content in detail below. The function of a high-speed sound barrier is to block the propagation of direct sound, isolate the propagation of sound, and allow sufficient attenuation of diffracted sound. When sound waves strike the wall of a high-speed sound barrier, diffraction occurs at the edge of the barrier, forming a "sound shadow zone" behind the barrier. The expected noise reduction effect of the highway sound barrier is within the "sound shadow zone". The wavelength of sound waves is much longer than that of light waves, so the boundary of this "sound shadow zone" is not clear. Sound waves emitted from the sound source can directly reach this range by crossing the edge of the barrier, which is called the "bright zone". There is also a small "transition zone" between the light and sound shadows. The noise level in the "sound shadow zone" is lower than the noise level without a sound barrier, which is the basic principle of noise reduction of a high-speed sound barrier. As a form of construction, high-speed sound barriers will inevitably have an impact on the surrounding environment. A well-designed high-speed sound barrier, in addition to having a significant noise reduction effect, also

2022/08/10

What are the installation requirements for high-speed sound barriers?

What are the installation requirements for high-speed sound barriers? The construction process of high-speed sound barriers is strict. In order to ensure the durability and structural safety of the high-speed sound barrier installation, different channels need to be selected to reduce the surrounding noise and meet people's living needs. The following will detail the relevant content. The sound barrier foundation built on the high-speed roadbed should be constructed simultaneously with the high-speed roadbed. It should not be damaged by its structure. Before laying the foundation vehicle body, laying the track, and laying the cable trough, the foundation construction of the roadbed should be stabilized to form a safe sound barrier. Before construction, the positions of various pipelines on the roadbed should be determined; according to the basic size of the sound barrier and its position on the shoulder, it is strictly forbidden to damage various pipelines when cutting and slotting. The high-speed sound barrier foundation should be constructed according to the design requirements, shape, and depth, and the foundation excavation should not damage the subgrade surface. The high-speed sound barrier foundation embeds anchor rods, and the anchor rod holes use grouting construction materials. The construction method should meet the design requirements and should not affect the safety and stability of the roadbed. The high-speed sound barrier foundation should be constructed according to the design requirements of expansion joints. The soundproof foundation has an expansion joint every 20~30 meters. During construction, the specific location of the expansion joint should be determined in combination with the site topography. The high-speed sound barrier foundation should be pre-embedded according to the design requirements

2022/08/02

How to maintain a high-speed sound barrier

How to maintain high-speed sound barriers High-speed highway sound barriers should keep the base surface clean and promptly remove debris and accumulated water from the base surface. The shape of the highway sound barrier is determined by calculating the "equivalent height" of each sound barrier and the vertical sound barrier. We will detail the relevant content below. High-speed sound barrier maintenance keeps the base surface clean, promptly removing debris and accumulated water from the base surface. Check the ground drainage near the foundation to ensure smooth drainage and no water accumulation near the foundation. At the same time, repair and seal any cracks in the foundation and nearby pavement to prevent a large amount of surface water from seeping into the foundation, causing foundation settlement. Measures should be taken to maintain the stability of the foundation or the slope near the foundation. It is forbidden for any individual or unit to dig pits, remove soil, dump waste, or conduct blasting operations and other activities that endanger the sound barrier around the foundation. Any behavior that may damage the sound barrier should be stopped immediately. For diseases such as erosion and peeling, honeycomb pockmarks, cracks, and exposed tendons on the base surface, they should be repaired with cement mortar. If it is difficult to repair with cement mortar due to vehicle vibration, epoxy resin or other polymer concrete should be considered for repair. Concrete voids, honeycombs, potholes, surface weathering, and peeling on the foundation should first have loose parts removed.

2022/07/28

Solar photovoltaic carport

2022/07/25

A brief introduction to the installation requirements of highway sound barriers

A brief introduction to the installation requirements of highway sound barriers and their noise reduction effects. When sound waves encounter a sound barrier during propagation, three phenomena occur: reflection, transmission, and diffraction. Generally, sound barriers can prevent the propagation of direct sound, allowing the transmitted sound to be sufficiently attenuated. The influence of transmitted sound can be ignored, so the sound insulation effect of the sound barrier can generally be expressed by noise reduction. Noise reduction reflects the above two sound transmission capabilities of the sound barrier. Inserting a sound barrier between the sound source and the receiving point, and setting the sound barrier to be infinitely long, sound waves can only diffract from above the sound barrier, then forming a sound shadow zone. Just like light is blocked by an object to form a shadow, in this sound shadow zone, people can feel a significant reduction in noise. This is the noise reduction effect of the sound barrier. Installation requirements of highway sound barriers: (1) The foundation depth and material meet the design requirements. (2) The specifications and materials of the metal columns should not be lower than the design requirements. (3) The welding materials and fasteners used meet the design requirements and the provisions of current standards. There should be no cracks, unfused areas, slag inclusions, or unpenetrated arc pits during welding. (4) Measures should be taken to prevent corrosion during the transportation of metal columns, connecting pieces, and sound barriers when they are loaded onto trucks.

2022/07/20

Sound insulation characteristics, components, and installation precautions of road noise barriers

Road noise barriers: sound insulation characteristics, components, and installation precautions. Sound insulation characteristics of road noise barriers. The function of road noise barriers is to block the propagation of direct sound, isolate the propagation of sound, and allow reflected sound to be sufficiently attenuated. Therefore, the sound insulation attenuation of the noise barrier is designed using the principle of sound wave reflection. When sound waves encounter obstacles during propagation, they are reflected, forming a "sound shadow zone" at a certain distance behind the obstacle. The size of this zone depends on the sound. From this point of view, the sound insulation attenuation of the noise barrier is closely related to various central frequency values. Doubling the frequency of the sound increases the noise reduction of the barrier by 3dB. Doubling the height of the barrier increases its noise reduction by 6dB. If the receiving point is moved closer from the far field to the same distance from the source to the obstacle, the noise reduction at each frequency will increase by 3dB. If the distance between the source and the receiving point and the height of the sound barrier are fixed, when the sound barrier is located in the middle position between the source and the receiving point, its noise reduction is small. Therefore, the location of the road sound barrier should be close to the sound source or receiving point. Components of highway noise barriers. The columns are mainly composed of steel structure columns and sound-absorbing screens, and are the main load-bearing structures of highway noise barriers.

2022/07/14

The structure and noise reduction principle of road noise barriers

Road noise barrier structure and noise reduction principle What regulations should the structural design of road noise barriers meet? 1. The structural design of road noise barriers should comply with the provisions of relevant standards. 2. The structural form of road noise barriers should be determined according to the requirements of the project and the environment, and the sound-absorbing composite structure should adopt integral components. 3. The structural design of road noise barriers should consider loads such as self-weight, wind load, and train pulsation. The design load of the noise barrier should be comprehensively considered according to the loads that may act simultaneously during use, and the design should be carried out under unfavorable conditions. 4. The connection between the bridge railing and the bridge, and the connection between the roadbed noise barrier and the foundation should use cast-in-place concrete connectors or bolted connectors. 5. Expansion joints should be set up in the noise barrier and should be sealed; the sealing methods of swing wedges and trapezoidal connections should be considered, and expansion joints should be set up at the connection of the beams. Highway noise barrier structure Highway noise barriers are used to control traffic noise pollution on one or both sides of highways, which can reduce the harm of noise to residents around highways. The materials of highway noise barriers are mainly composed of metal sound-absorbing screens, transparent sound insulation screens, columns, and connecting pieces. The H-shaped column is the main load-bearing structure of the highway noise barrier, which is fixed to the road crash wall or pre-embedded plate by bolts. The sound insulation board is the main

2022/07/08

Do you know what factors affect the sound insulation effect of highway noise barriers?

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 insulation screens we usually refer to are wooden boards with sound insulation exceeding 30dB. Therefore, the choice of material for noise reduction and sound insulation screens is also important.