Population concentration and the resulting traffic jams are a common phenomenon in modern society. Such problems are getting worse as time goes on. Although the highway area increases every year, traffic jams still can't be solved effectively. So the popularity of land transportation is decreasing in favour of track transportation. Track transportation has many advantages, but the noise and vibration induced from the wheel/rail contact are sensitive to the neighboring residents along the track route.There are many complaints about noise and vibration from the residents along the Taipei MRT (TRTS) line where the TRTS tunnel is underneath the building, so TRTS decided to use one of best solutions to vibration prevention available to the track engineer -Floating Slab Track (FST).In this paper, the overall issues of the FST based on consideration of the local area in the design stage were studied, including the mode of structure analysis, the vibration isolating component, material, localized geotechnical parameters, rail fastener, elastic coefficient, etc. We hope this paper can share our practical experience and the results of the study for the vibration prevention in track at the urban transportation for environmental pollution prevention, to other railway systems or to academia in the environment field and railway field.
Population density and traffic jams are common phenomena in modern society. Although roadway areas increase every year, traffic congestion still cannot be solved effectively. So land transportation is turning to track transportation. Track transportation has many advantages, but the noise and vibration induced from the wheel/rail contact are sensitive issues to the neighbouring residents along the line in the urban areas. Much complaint about noise and vibration arose from the residents along the Taipei MRT lines where the MRT tunnels were underneath the buildings, so Floating Slab Track (FST), one of the best solutions of noise and vibration prevention in the track engineering, was applied to the Taipei MRT. This paper studies the overall issues of the FST based on the localized consideration in the planning, design, construction, final noise and vibration performance measurement stages, including the mode of structure analyses, vibration isolating component, material, localize geotechnical parameters, type of structure, rail fastener, elastic coefficient, vibration isolating component, the actually performance of noise and vibration deduction, etc. We hope we can share our practical experience of the noise and vibration prevention/environmental pollution prevention in urban transportation to other railway systems or with academics in the environment and railway fields in other part of the world.
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