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Current Status & Existing Problems

With the rapid, convenient and large-capacity development of railway and urban rail transit, the environmental pollution problems such as vibration, noise and electromagnetic radiation , which have had a serious impact on the normal lives, study and work of residents, institutions of education, science, and technology along the line. In recent years, complaints from the public about rail vibration (especially along the subway and superstructure property) and noise have become increasingly common and serious. Therefore, professional analysis and calculation must be carried out in combination with the frequency spectrum characteristics of track vibration and noise on specific route segments, scientifically select high-quality materials/systems, and carry out targeted governance of sensitive vibration and noise in order to achieve ideal acoustic effects.

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Clocell Solutions

Clocell provides customers with track vibration solutions based on "polyurethane elastomers". It is not only suitable for traditional ballasted track and new ballastless tracks, but also suitable for various rail transit forms such as high-speed railways, intercity railways, subways, light rails, tramcar and so on. Materials and solutions can be provided for the application of different locations such as rail, fastener base plate, sleeper, ballast and ballast bed, in order to achieve consistent damping effect.
Based on factors such as rail type, material application form, and installation location, the track vibration isolation materials and solutions provided by Clocell Acoustic for customers mainly include

Acoustic environment of underground space

Track vibration isolation

Track sound insulation

Acoustic environment of underground space

Road sound insulation

TOD Integrated Acoustics Project

Track vibration isolation

The structure of the affected buildings and structures can amplify the vibration excitation generated by the locomotive, causing damage to the building structure, which will lead to cracking or settlement, resulting in a significant depreciation of the property.

Track sound insulation

Rail transit noise is mainly caused by contact noise between the rail and the track during train operation, the friction sound between the vehicle wheel flange and the rail in the small radius curve section, the non-dynamic system noise of the vehicle (vehicle air compressor, air conditioner, electric motor, etc.), and the wind resistance sound generated by the friction between the body of the train and the air friction during operation, as well as the radiation noise caused by the secondary vibration of the bridge structure.

Acoustic environment of underground space

As urban underground space development increases, the vibration and noise problems caused by the equipment room, equipment floor, refuge floor or outdoor mechanical and electrical equipment inside the building are very common. The radiation of vibration and noise not only reduces the comfort of the environment, but also affects the physical and mental health of users.

Road sound insulation

In recent years, sound barriers have been widely used in transportation facilities around the country, with a wide variety of types, diverse shapes, different heights and widths, and chaos For example, the lack of unified specification and size standards for sound barrier components; uneven selection of materials; Lack of strict acceptance after the completion of the project; Overemphasizing the initial cost and neglecting the whole life cycle cost; Excessive installation of "reflection and sound insulation" functional components weakens the noise reduction effect of sound barriers.

TOD Integrated Acoustics Project

TOD is a "transit-oriented" new development model. It centers on public transportation such as subway, light rail, bus, etc., establishes a community that integrates work, business, culture, education, and residence within a radius of 5-10 minutes' walk. However, while urban residents enjoy the convenience of transportation and living brought by TOD, noise and vibration pollution also come along, brought by various factors such as subway, light rail, surrounding roads, supporting businesses, large-scale flow of people and so on, , which poses a huge challenge to the quality of acoustic environment.

Reference Projects