JPS6452935A - Reinforcing bar structure of concrete structure - Google Patents

Abstract

PURPOSE: To easily fill and execute concrete without deteriorating a reinforcement effect by combining a pair of spiral iron wires, which are placed at the same pitch and in which the direction of rotation is reversed, so that each strand is crossed alternately. CONSTITUTION: In the reinforcing-bar structure 1, each strand 2a, 3a at every pitch of a pair of spiral iron wires 2, 3, which are placed at equal pitches and in which the direction of rotation is reversed, is crossed alternately, and combined under an approximately concentric state. The quantity of steel materials used in equalized to conventional reinforcing-bar structure because the pitches P of each iron wire 2, 3 increase approximately twice of the pitches P of conventional iron wires 11. A maximum space L between the adjacent strands 2a, 3a is equalized to the pitches P of each iron wire 2, 3. Accordingly, concrete is filled and executed easily by the same reinforcement effect as conventional devices and at the same time the peeling-down of cover concrete can be prevented.