To provide an inner form device for constructing a concrete structure and a method for constructing the concrete structure, which can optimally support the inner form device on a concrete wall, as well as can execute the work easily and inexpensively.
The inner form device 12, having an inner form plate 13 and a form plate supporting structure 14 fixed at the back side of the inner form plate 13, is supported via a form support member 34 which is detachably fixed on a concrete wall 10, molded in advance. The device is provided with an upper stopper 17 projecting at the upper edge of the inner form plate 13, toward the front side from the surface of the inner form plate 13 and a lower stopper 25, supporting at a lower end of the form plate support structure 14 movably between the position projecting from the surface of the inner form plate toward the front side and the position drawing back from the surface to the back side. The form support member 34 can be detached with the upper stopper 17 or the lower stopper 25 which is upheld at the upper edge of the concrete wall 10.
CHIKAMA JUN
YAMAGUCHI HIROSHI
OKADA YASUYUKI
IBA KOJI
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