G1800201 スラブ軌道トンネル内バラスト敷設による微気圧波対策の現地測定

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タイトル別名
  • G1800201 Field measurement on the countermeasure against micro-pressure waves by installing ballast layers in a slab-track tunnel

抄録

An impulsive pressure wave (micro-pressure wave) emitted from a tunnel portal is one of the environmental problems in high-speed railways. The magnitude of the micro-pressure wave is approximately proportional to the maximum pressure gradient of the compression wavefront at the tunnel exit portal. Consequently, it is necessary to mitigate the pressure gradient of the compression wavefront for reducing the micro-pressure wave. In this study, field measurement in an actual slab-track tunnel was conducted for investigating the effect of ballast layers installed in the slab-track tunnel on the reduction of the micro-pressure wave. The results indicate that the ballast layers installed in the slab track tunnel mitigate the steepening of the compression wavefront and reduce the micro-pressure wave.

収録刊行物

  • 年次大会

    年次大会 2015 (0), _G1800201--_G1800201-, 2015

    一般社団法人 日本機械学会

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