| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceiling structure for underground facilities like a subway having an excellent ventilation property preventing damages caused by the smoke upon a fire. <P>SOLUTION: A first underlayer material hung from a concrete ceiling wall by a hanging body is arranged under the concrete ceiling wall. A waterproof receiving panel body is arranged under the first underlayer material. A clamping part of a mounting metal piece is joined to the first underlayer material, and the waterproof receiving panel body is joined to a joint part of the mounting metal piece. An upper part of a hanging metal piece is engaged with the waterproof receiving panel body, and a second underlayer material is fixed to the lower part of the hanging metal piece. A porous plate for ceiling interior decoration is fitted to the second underlayer material. A lower part of the concrete ceiling wall of the underground facilities is covered with a double-structured panel body. The lower part of the concrete ceiling wall is covered by the double-structure of the waterproof receiving panel and the porous plate for ceiling interior decoration, and a ventilating space is formed between the waterproof receiving panel and the porous plate for ceiling interior decoration. <P>COPYRIGHT: (C)2008,JPO&INPIT |
