2022/12/27

Elevated bridge noise barriers are a current method for controlling bridge noise

Elevated bridge noise barriers are a current method for controlling bridge noise. Noise barriers are mainly used for sound insulation and noise reduction of noise sources such as expressways, highways, and elevated composite roads. They can be divided into purely sound-insulating reflective noise barriers and sound-absorbing and sound-insulating composite noise barriers. The latter has a better sound insulation effect and can be divided into elevated bridge noise barriers, equipment noise barriers, industrial boundary noise barriers, and highway noise barriers. The planning of elevated bridge noise barriers needs to consider the surrounding environment and the noise level of the existing bridge. For bridges that have not yet been completed or registered, the noise of the scene can be directly measured, and then the height and required structure of the retaining wall can be calculated according to the theoretical formula. Before constructing the noise barrier, the background noise level of the existing bridge should be confirmed, and the height and required structure of the noise barrier should be calculated according to the theoretical formula. All components of the elevated bridge noise barrier are manufactured according to the architectural planning drawings during production and installed on site. They are aesthetically pleasing, cleverly planned, low cost, and have a long service life. They are particularly suitable for noise reduction of bridges, elevated roads, highways, urban light rail, and subways, and are an important measure for modern urban sound insulation and noise reduction. What material are bridge noise barriers made of? Bridge noise barriers are also known as high-speed rail noise barriers.

2022/12/19

How to prevent the detachment of elevated bridge sound barriers?

How to prevent the detachment of elevated bridge noise barriers? City elevated roads and overpasses are primarily designed to provide prices to alleviate road traffic congestion, avoid line plane intersections with other manufacturers, provide noise barriers for elevated roads, and save land, allowing the quoted traffic at the original plane intersection to intersect at different altitudes, and separated from empty factories. The noise barriers of elevated roads and various elevated roads do not interfere with each other to improve vehicle speed and the passing capacity of factory intersections. How to prevent the quoted detachment from becoming a bridge noise barrier? The quoted bridge noise barrier was born to mitigate traffic noise. Elevated roads are interspersed with roads of various factories in the city, elevated road noise barriers, and residential factories. Installing noise barriers is an inevitable trend for noise reduction of elevated road noise barriers. Anti-fall equipment manufacturers set it as a mandatory standard. For elevated road noise barriers, to avoid accidents on the bridge, broken noise barriers will cause secondary harm to vehicles and pedestrians below the bridge. Each panel of the quoted body should be connected to the steel column through an anti-fall device to prevent the panel from falling off from the manufacturer after being impacted by external force. The elevated road noise barrier should be connected in series with the steel wire rope above the M6. The quoted series connection method is not limited, but the manufacturer should meet the functional requirements. The quoted number of steel wire ropes, elevated road noise barriers

2022/12/07

What causes sound leakage after the installation of a bridge sound barrier?

What causes sound leakage after the installation of bridge sound barriers? Bridge sound barriers are widely used in traffic safety engineering and can effectively reduce the impact of traffic noise on surrounding residential areas. However, improper installation during installation may cause sound leakage. So how to avoid this situation? When highway sound barriers are built on elevated bridges, their foundations are mostly cement crash walls. Bridge sections have more cement crash walls than roadbed sections, but this crash wall increases the difficulty of installing sound barriers and, to some extent, causes sound leakage. After installation, the sound barrier acts like a huge wall, concentrating the noise and diffusing it outward from the gaps. This is a factor that causes the noise to increase after the installation of the bridge sound barrier. There are several reasons for bottom leakage: 1. Bridge guardrail Guardrails have already been installed on the cement crash walls on both sides of the bridge. Removing the bridge guardrails will not only increase costs but also take up excessive man-hours. Some customers, in order to save costs, directly use the H-shaped steel columns of the sound barrier to bypass the metal guardrail and combine it with the existing chassis and metal guardrail. However, this may create gaps. 2. Is the bridge deck slotted? Old bridges were not designed with sound barriers in mind, so the crash walls did not have pre-embedded holes for the columns. When

2022/11/28

Let's talk about the installation steps of bridge sound barriers

Let's talk about the installation steps of bridge sound barriers. 1. Contact the bridge sound barrier manufacturer and negotiate with the manufacturer to formulate a suitable sound barrier installation plan, determining the materials, specifications, style, and color. 2. Sign a purchase contract and customize the sound barrier. 3. Based on the design drawings provided by different manufacturers, prepare the necessary basic data in advance. 4. When unloading the bridge sound barrier, use lifting straps of different strengths and sufficient strength as loading and unloading slings. Do not use hard slings such as steel wire ropes to prevent scratching and tearing of the sound-absorbing panels. 5. Install the thin nuts and spring washers under the bridge sound barrier columns; adjust the position of the columns, and the spacing should be vertical. 6. After installing the screen panels, adjust the bottom edge of the top cover so that it overlaps with the soft wire at the top of the column cable installation cover, and then fasten it with self-tapping screws. During the installation of the bridge sound barrier, it is necessary to check the straightness of the gaps in the screen panels with overall sound barrier functions, adjust the baseline to a straight line, and the bridge sound barrier columns block the installation of the screen. The bottom cushion of the sound barrier needs to be high; if the bottom gap is too large, it will cause leakage at the bottom, greatly reducing the sound insulation effect of the sound barrier. The current solution is to install a cover plate, which needs to be fixed with rivets. Bridge sound barriers for high-rise users

2022/11/17

Precautions and Requirements for the Installation of Bridge Noise Barriers

Precautions and Requirements for the Installation of Bridge Noise Barriers Many cities in China are currently improving their infrastructure, and road traffic construction is also underway. The construction of highways and railways inevitably generates noise pollution. With China's increasing environmental protection efforts, noise pollution has also been included in the scope of governance. One solution for road noise is installing noise barriers. These are divided into roadside noise barriers and bridge noise barriers, depending on the road type. Bridge noise barriers are generally installed on the concrete crash walls on both sides of the road. Depending on the thickness and shape of the road's crash barriers, bridge noise barriers are installed in various ways. In newly built bridges, the steel columns of noise barriers use the grouting method to embed anchors into the concrete crash walls. Before grouting, the bridge's anchoring structure should be checked for defects. If any defects are found, they should be reinforced or strengthened before grouting. The adhesive used for grouting should be Class A adhesive. Because older bridges did not initially consider the installation of noise barriers, there are no pre-embedded holes in the cement walls. When installing noise barriers later, the base plate of the column can be made into an R-shape or U-shape to sit atop the cement wall, depending on the thickness of the concrete crash wall. However, directly fixing the flat plate to the cement wall with expansion bolts is not recommended due to poor safety and stability. The installation of the bottom cover plate of the bridge noise barrier should not be omitted; omitting this accessory will...

2022/11/07

What is the primary mechanism by which highway noise barriers absorb sound?

What is the main mechanism by which highway noise barriers absorb sound? The key challenges in noise control for transportation systems can be categorized into highway noise barriers, urban expressway noise barriers, bridge composite noise barriers, metal aluminum plate noise barriers. A fast noise barrier is a type of noise barrier whose main function is to isolate the noise source from the highway traffic and the natural reserve on both sides of the road. Because the noise generated by highway traffic companies in China has brought inconvenience and harm to our lives and work, setting up road insulation screens is the main way to control noise. Fast highway noise barriers are easy to assemble. The control panels are inserted into the H-column one after another. These panels are embedded and seamlessly spliced. The appearance is beautiful and generous, with a variety of surface finishes, flexible shapes, and coordination with the surrounding environment. They are durable, unique, and have weathering corrosion, surface treatment, and processing capabilities. They are easy to clean; each module can be disassembled and replaced separately, and daily maintenance and replacement are relatively simple. The upper end of the flat-arm composite noise barrier uses perforated metal sound-absorbing panels, and the top is a micro-arc, which helps to improve the noise reduction range and enhance the noise reduction effect. The bottom uses a transparent noise barrier. The visual effect is good for drivers, and the scenery along the way can also be seen.

2022/10/28

Highway noise barrier noise reduction platform analysis and sound insulation design scheme

Highway noise barrier noise reduction platform analysis and sound insulation design scheme 1. There are two ways to control noise: one is to reduce noise at the source; the other is to block the propagation of noise in the propagation path. The top of the fiberglass reinforced plastic anti-corrosion sound-absorbing board uses paper-faced gypsum board, the surrounding uses mature gypsum molding modules, and the periphery uses light wooden geometric structural base plates. Then, according to the installation method of the track and the net size of the movable partition wall. Top arc-shaped noise barrier internal structure: using sound-absorbing material as the core board, using rock wool color steel plate sound prefabricated components assembly. Top arc-shaped noise barrier product advantages: *High sound insulation: average sound insulation 10. The railway noise barrier connects a device at the sound source and the receiver, so that the ultrasonic wave propagation has a significant additional loss, thus weakening the noise hazard in a certain area where the receiver belongs, and this device is called a noise barrier. The noise barrier cannot completely block the propagation of sound, and the sound wave frequency will encounter diffraction and projection conditions when encountering the noise barrier. Noise barrier target design analysis: When designing the highway noise barrier target, A should fully consider the background noise value of the maintenance space environment. When the background noise value of the receiving point is lower than the noise standard of the space environment, the design can use the road traffic noise value minus

2022/10/18

Let's discuss some small details to keep in mind when applying highway noise barriers in winter

Let's talk about the small details to pay attention to when applying highway sound barriers in winter. Highway sound barriers are widely used in roads, railways, coal mines, metallurgical industries, power projects, factories and mines, schools, hospitals, theaters, stadiums, public libraries, and residential areas. Large arc highway sound barriers have high sound insulation: average sound insulation 37dB. Sound absorption coefficient: A sound absorption coefficient 0.95. Weather resistance and durability: The large arc sound barrier design product has considered the wind load on the road. Fast sound barriers are mainly used for roads, highways, elevated bridges, composite pavements, and other noise sources for sound insulation and noise reduction. It can be divided into pure sound insulation scattering type sound barriers, and composite sound barriers combining sound absorption and sound insulation, the latter being more effective sound insulation. The railway sound barrier inserts a device between the sound source and the receiver, so that the ultrasonic wave scattering has a significant additional loss, thus weakening the noise hazard in a certain area of the receiver, and this device is called a sound barrier. It has the advantages of noise reduction and sound insulation performance, aging resistance, high cost performance, sun protection and isolation, and fire prevention. The establishment of a rapid sound barrier is also important. When the daily average temperature of the highway sound barrier construction site is less than 5℃ or the low temperature is less than 3℃, it should be solved according to the winter concrete pouring solution. According to the national road sound

2022/10/11

Analysis of Highway Noise Barrier Processing Technology

Below, we will discuss the analysis of highway noise barrier processing technology. Everyone knows what the highway noise barrier processing technology is like, right? Highway noise barriers can be used on highways or other sites. As long as there is noise, you can see it. At present, there are the following problems and deficiencies in the application of road noise barriers: aerodynamic noise and the interaction between the aerodynamic (train wind) generated by fast vehicles, especially rail trains, and the waterproof layer noise barrier walls, which endanger the building structure and noise control and can reduce the noise reduction effect. The structure of the noise barrier cannot be adjusted according to the actual situation. The processing technology of highway sound insulation materials is more prominent. They have a certain ultraviolet shielding effect, and even after new technology processing, the entire durability plate surface, and special processes, with product value to stabilize ultraviolet rays. These products have a relatively long aging resistance. After long-term use, it can maintain the optical properties of all new products and is not affected by ultraviolet light or other conditions. Therefore, these materials can be used for a series of other buildings and are more suitable for the application of advertising products. The production process of highway noise barriers is relatively light. Compared with the thickness of ordinary 1/12 glass, the solid board inside is 1/2 the thickness of a glass.

2022/09/28

Detailed introduction to the follow-up maintenance work of highway noise barriers

A detailed introduction to the post-installation maintenance work of highway noise barriers. During the use of highway noise barriers, some minor common malfunctions may occur. Do we know how to repair them? Let me tell you how to repair sound insulation panels. 1. When the metal material screen sound insulation panel is damaged, it needs to be replaced with a new metal screen in time; when replacing the metal material screen, generally remove the screen material from top to bottom, and after upgrading and updating the screen material, assemble it from bottom to top for replacement and maintenance. When replacing the new metal screen, attention should be paid to the airtightness between the replaced screen and the original screen to prevent sound leakage. Non-metallic sound barriers require attention to the following aspects during maintenance: attach great importance to maintenance and prevent screen damage. Non-metallic materials, such as concrete sound barriers, generally have a better blocking effect than metal materials or transparent shielding materials, and are much heavier, so the screen increases the demand for daily maintenance to prevent screen damage and replace it immediately if damaged. Improve maintenance and maintenance, color continuity, the non-metallic materials of sound barriers generally adapt to local conditions, surface spraying, and the color will fade to a certain extent after 2-3 years of spraying, so it needs to be replenished in time.