トンネル枝坑坑口から放射される圧力波の低減対策
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概要
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When a high-speed train enters a tunnel equipped with branches, pressure waves are radiated from the portals of the branches as well as from those of the main tunnel. They can cause wayside environmental problems for high-speed railways, especially in urban areas. In this study, we investigated a countermeasure against the pressure waves radiated from the portals of the branches. It has been shown that a branch with an inside partition which divides the inside of the branch into two parts in the vicinity of its portal with the end of one part closed, can be effective in reducing the magnitude of the micro-pressure wave.
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