To provide a slipping form device for expanding spaces between yokes and enabling suspension of a large-scale prefabricated reinforcement assembly between the yokes.
A slipping form device 10 comprises a plurality of yokes 15 spaced from one another in the peripheral direction of forms for supporting annular inner and outer forms 13, 14, wherein a concrete is placed between the forms 13, 14 while moving the yokes 15 up to form an annular concrete wall 12. Medium stage working floors 21, 22 are arranged inside the inner form 13 and outside the outer form 14 along the peripheral direction of the forms so that the yokes 15 are connected together in the peripheral direction of the forms for improving horizontal and vertical rigidity between the connected yokes 15 and widening spaces between the yokes 15. The arranged medium stage working floors 21, 22 are tied in sequence in the peripheral direction of the forms. Therefore, spaces between the yokes neighboring each other are in a long-span form.
HARADA TSUNENORI
KATO YUICHI
