What are the applications of ordinary noise reducing comb plate expansion device in the bridge indus
The ordinary noise reducing comb plate expansion device is the core component of bridge structures. With the advantages of low noise, impact resistance, and flexible expansion, it is widely used in the bridge industry to alleviate vehicle traffic vibration and noise. The specific applications are as follows:
The ordinary noise reducing comb plate expansion device is the core component of bridge structures. With the advantages of low noise, impact resistance, and flexible expansion, it is widely used in the bridge industry to alleviate vehicle traffic vibration and noise. The specific applications are as follows:
1. Urban main roads and elevated bridges
The traffic flow on urban main roads and elevated bridges is high and the speed is moderate. Frequent rolling of ordinary expansion devices by vehicles can easily produce sharp noise, affecting the lives of surrounding residents. The noise reducing comb plate expansion device significantly reduces the impact noise and vibration during vehicle passage by optimizing the comb tooth meshing structure and using an elastic wear-resistant rubber cushion layer. At the same time, it has strong bearing capacity and can withstand repeated crushing by heavy vehicles, which is suitable for the high-frequency use needs of urban bridges. It is a commonly used selection for noise reduction renovation of municipal bridges.
2. Bridges around residential areas, schools, and hospitals
This type of area has strict control over noise pollution, and the noise reducing comb plate expansion device can effectively reduce vehicle traffic noise (compared to traditional expansion devices, the noise reduction can reach 10-15 dB), avoiding noise interference with residents' rest, students' studies, and patients' rest. Whether it is a river crossing bridge, pedestrian overpass, or road overpass, the installation of this device can balance the expansion function of the bridge with the noise reduction requirements of the surrounding environment.
3. Small and medium span highway bridges
For medium and small span highway bridges with a span of 10-50m, the expansion capacity of ordinary noise reducing comb plate expansion devices (generally covering 0-320mm) can meet the displacement requirements of bridges caused by temperature changes and load deformation. Its structure is simple, installation and maintenance are convenient, and the cost is lower than that of modular expansion devices. It is suitable for the construction and maintenance of rural roads and county-level highway bridges, while reducing the bumpy feeling of vehicle driving and improving driving comfort.
4. Upgrading and renovating the expansion device of the old bridge
The traditional expansion devices of many old bridges have problems such as loud noise, looseness, and water leakage due to long-term use. The noise reducing comb plate expansion device can directly replace the original device without the need for large-scale renovation of the bridge beam ends. After the renovation, it can not only solve the problem of noise disturbance to the public, but also enhance the waterproof performance of the expansion device, prevent rainwater from infiltrating into the interior of the beam and causing steel corrosion, and extend the overall service life of the bridge.
5. Pedestrian and non motorized vehicle mixed bridge
Pedestrian overpasses and bridges specifically designed for non motorized vehicles have high requirements for traffic comfort. The teeth gap of the noise reducing comb plate expansion device is small, which can avoid the risk of pedestrians stepping on empty spaces and non motorized vehicle tires getting stuck. At the same time, the elastic cushion layer can cushion the vibration of pedestrian footsteps and non motorized vehicle rolling, reduce traffic noise, and improve the safety and experience of pedestrian and non motorized vehicle traffic.
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