2022/09/20

What are the design points of highway noise barriers

Let's talk about the design points of highway noise barriers. Although highway noise barriers are very important equipment in daily life, they are not necessarily available everywhere. Let's let the editor tell you about the design points of highway noise barriers. 1. The basic ground waterproofing should be constructed according to the design points, such as the gaps between the cable trough, the contact net support, and the earth shoulder. 2. After the basic compaction of all concrete grouting, the surface is smoothly connected with the surface of the subgrade project. 3. The basic laying of anchor cables, anchor hole grouting construction commonly used raw materials, and construction processes must comply with the design points and must not endanger the safety and stability of the subgrade project. 4. The highway noise barrier should basically be constructed according to the design points, appearance specifications, and deep construction. The foundation excavation must not damage the subgrade surface. 5. The highway noise barrier should basically pre-embed drainage pipes according to the design points. The inlet and outlet of the drainage pipes must not flush the subgrade; the concrete pouring at the intersection of the drainage pipes and the water collection pits between the ballastless track wires must not damage the drainage pipes. Basically, a 100mm L-shaped PVC pipe is pre-embedded every 2m at the top to drain the seepage from the road body and the cable trough drainage; the water collection pit connecting drainage pipes between the ballastless track lines can be cast in the foundation, and the highway noise barrier needs

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.

2022/07/08

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.

2022/07/05

Below, we will discuss the structural characteristics of road noise barriers and key points for their construction.

A mobile road sound barrier includes a soundproof wall, a support, and a base set at the bottom of the soundproof wall. The soundproof wall includes sound-absorbing panels and soundproof panels arranged side by side, with a noise reduction wall between the sound-absorbing panels and the soundproof panels. The outer side of the sound-absorbing panels is coated with a flexible crack-resistant mortar layer, and the outer side of the soundproof panels is coated with a second flexible crack-resistant mortar layer. A noise reduction device is provided at the top of the soundproof wall to filter out the noise removed by the soundproof wall. The support is movably connected to the base via bolts. The bottom of the base has two legs, and the bottom of each leg is connected to a roller. The rollers are placed in the tracks on the base, and the rollers can move the soundproof wall.

2022/06/27

The role and application of highway noise barriers

Highway noise barriers consist mainly of two parts: steel columns and metal sound insulation panels. The columns are the main load-bearing components of the noise barrier, fixed to the pre-embedded steel plates on the side of the road crash wall or track by bolts or welding; the sound insulation panels are the main sound insulation and sound absorption components, fixed in the H-shaped column slots by high-strength safety clips, forming a complete highway noise barrier.

2022/06/21

Requirements for the Construction of Highway Noise Barrier Foundations

Many factors affect the poor performance of highway noise barriers, such as the relative position, height, and shape of the noise barrier. The horizontal position of the noise barrier should be as close as possible to the sound source, which helps to increase the shadow area of the noise barrier and thus improve the noise reduction. Other conditions remaining unchanged, the shadow area closer to the sound source is larger than that farther away from the sound source.