PURPOSE: To dispense with cleaning of a formwork at every drawing out of a concrete formwork, and enable to quickly set the formwork for succeeding process.
CONSTITUTION: A formwork device for a jumping formwork construction method for building a caisson is provided with a pedestal 9 arranged in a partitioned chamber and contacted its four faces with the partion walls 4, an elevatable frame 11 connected onto the pedestal 9 elevatably and detachably, and a formwork device main body 5 constituted of frameworks 14 vertically supported with the side four faces of the elevatable frame 11 capably of being advanced and retreated. A concrete sticking prevention film 20 is stuck on the side of placing concrete of the formwork 14 so as to enable to exchange it at every placing concrete.
KATO MINORU
SONE TAKAYUKI
NOZAKI TOKIHISA
