| 摘要 |
PURPOSE:To suppress the occurrence of cracks as much as possible by preventing displacement caused by earth pressure by a method in which arched parts and shelves surrounded by bottom wall and reinforced parts are formed, and a number of reinforcing bars are set on the reinforced parts in a string form for the arched parts. CONSTITUTION:Angular column bearing parts 2 are formed on both ends of an arched part 1, and a horizontal bottom slab 3 is formed inside of the arched part 1, with a reinforced part 4 spanning in a string form. Anchors 10 are set on banking and sheathing panels A are fixed with nuts 14. When earth pressure acts on the panels A, reinforcing bars 6 share tensile forces to prevent the horizontal deformation of the arched part 1. Sheathing panels of great bearing force can thus be obtained and the weight can also be greatly reduced by using less amount of concrete.
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