| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation shield equipment for an accelerator facility which prevents deformation of concrete body due to sunshine and the air temperature variation and can reduce the construction cost. SOLUTION: Continuous slits 11 are formed from the outer surface toward the inner surface of portions facing outside in a concrete body 10, in the direction suppressing expansion and contraction of the concrete body 10 due to temperature variation, that is, in the vertical direction for the roof part 10A and in an inclined direction to the floor 10C for the outer wall part 10B. In the slits 11, filler 12 made of a material not disturbing absorption of the expansion and contraction in the concrete body 10 is filled.
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