SKELETON STRUCTURE LARGE IN MEMBER THICKNESS REQUIRING SHIELDING PERFORMANCE, AND CONSTRUCTION METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To obtain a skeleton structure large in thick of member capable of drastically reducing the amount of concrete and iron of slab or wall, drastically reducing the cost of tentative construction in the case of non-support construction method and obtaining a required shielding performance. SOLUTION: In the structure, a shield body 14 is filled in between reversed beams 12 of lower structure of concrete form consisting of the beams 12 and lower slabs 11, the shield body 14 is closed with an upper slab 13 attached to the beams 12 and the total load is supported with the beams 12 and the upper and the lower slabs 11 and 13. By making the side shape of the reversed beams 12 arc shape, radiation can not proceed between the reversed beams 12 and the shield body 14. A concrete formwork is used for the arc shape beam 12 which a lath formwork 15Ab with high deformation performance such as welded metal net 15Aa is attached and the reversed beams 12 in arc shape on the side is formed on a lower slab 11.