Construction method of pre-concrete construction of reinforced concrete structure, construction method of reinforced concrete structure, and formwork for reinforced concrete placement

摘要

PROBLEM TO BE SOLVED: To provide a preform construction method having features such as reduction / efficiency of on-site construction period, support for narrow land, and detailed examination at actual size. SOLUTION: On one side of a steel plate having a certain thickness, a vertical / horizontal frame material is attached to the ends of the four circumferences, and vertical crosspieces are attached within the four circumferences to include a plurality of strip-shaped sections in which the four circumferences are formed. Forming and attaching a single or multiple cross rails to each of the plurality of strip-shaped sections so that the strip-shaped sections are composed of a single or a plurality of strip-shaped divided sections, and a formwork incorporating a support material. The first step of forming the structure and the second step of forming a specific strip-shaped section or a part of the support material-embedded formwork structure as a detachable support material-embedded formwork structure. , Assemble the reinforcing bars with the formwork on the other side facing the one side of the first support material built-in formwork structure or the second support material built-in formwork structure, and make the separator holes into the formwork body. It is provided with a third step of forming a formwork structure with a reinforcing material incorporated with reinforcing bars by drilling. [Selection diagram] Fig. 1