| 摘要 |
PROBLEM TO BE SOLVED: To ensure a wide effective space by attaining lightening by simplifying a roof structure by dispersing bearing load, reducing ever power required for the open-close movement of a roof with the lightening and tightly reinforcing only a fixing section in the leg section of an arched beam bearing roof load. SOLUTION: The arched open-close roof structure is constituted of a pair of parallel fixed arched beams 11, 12 constructed between separately installed building-frame walls 5, 6, three girders 15, 16, 17 mounted in parallel in the cross-sectional direction orthogonal to these arched beams, two open-close roofs 21, 22 oppositely faced on parallel rails R set up on the outsides of the arch leg sections at the upper end sections of these girders and building-frame walls 5, 6 and opened and closed and moved, and an open-close driving device opening and closing and shifting these open-close roofs. The girders 15, 17 on the outsides in the three girders are fixed onto the arched beams, and a section 16A between the arched beams of the girder 16 at a center is moved near either outside girder.
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