CONSTRUCTING DEVICE OF CONTRACTION PART FOR CONCRETE CONSTRUCTION

摘要

In the present invention, when constructing a long concrete structure such as a waterway or a retaining wall, the construction of the contraction portion installed at regular intervals of the structure is not only to make it easy to construct the structure at a low construction cost.;In order to achieve the above object, the present invention, in the construction of concrete structures such as waterways or retaining walls, while installing the formwork for the construction of the structure on both sides around the index plate, cracks consisting of fixing pieces and protrusions on the inner side of the formwork on both sides The plate is fixed and installed, and the protruding piece is installed to face the center of the hollow body formed in the center of the index plate, and the concrete mortar is cast inside the formwork in the above state, and the formwork is cured to remove the formwork after curing. When the contraction occurs in the structure itself according to the temperature change after construction, the crack is generated toward the hollow body of the index plate centering on the protruding piece of the crack plate, so that the smooth contraction of the structure can be achieved.