| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method for a roof structure, which can construct a comparatively large roof very efficiently, instead of large-scale construction method such as a full scaffold construction method, a lift-up construction method and the like. SOLUTION: Plural truss frame materials 4 are arranged in order like a flat surface net extending from the eaves edge part side to the ridge part side, circumferential joint materials are installed between the respective contact parts of the truss frame materials 4, and plural circumferential continuous compression rings 6 are arranged in order concentrically from the eaves edge side to the ridge part side. Pre-stress is introduced into the compression rings 6 in order from the eaves edge side to the ridge part side. The top chord and the bottom chord of each circumferential joint material are deformed from the bent state into the straight sate to introduce pre-stress into each compression ring 6.
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