| 摘要 |
PROBLEM TO BE SOLVED: To simplify installation steps and reduce cost by using the fewest parts of a base isolation expansion joint floor which is carried into a construction site. SOLUTION: An expansion floor member installed between the gaps formed by recessing the upper surfaces of the skeletons of a base-isolation structure and a non-base-isolation structure includes a metal fixed frame, an end frame, and side frames provided to the outer peripheral parts. The expansion floor member is formed of a precast concrete board manufactured in a plant. COPYRIGHT: (C)2010,JPO&INPIT
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