| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for occasionally and artificially changing a shape (an inside air space per person and an external shape of a building) of an air dome being a few frame form undecided by earthquake external force, that is, an pneumatic roof structure for keeping a stable shape by setting internal pressure higher than external atmospheric pressure. SOLUTION: A membrane 1 and a cable 2 of an end part of the pneumatic roof structure B are integrally sent out or pulled in, and an pneumatic roof is expanded by the internal pressure acting on a membrane roof or is contracted by force stronger than the internal pressure.
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