SOUNDPROOF DOOR FOR TUNNEL CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To provide a soundproof door for tunnel construction capable of exhibiting a high sound insulation performance using alight material at a low cost.SOLUTION: A soundproof door 1 is formed with an opening 7 that reduces the pressure acting on the soundproof door 1, reduces the vibration of the soundproof door 1 itself, and as a result, reduces acoustic radiation from the soundproof door 1. The opening 7 is provided with a silencer. The performance of the silencer is determined based on the ratio of the opening 7 included in the soundproof door 1. The ratio of the opening 7 allowed to the soundproof door 1 is determined based on the performance of the silencer provided to the opening 7.