| 摘要 |
PURPOSE: A construction method and an asymmetric reinforcing bar of a concrete structure is provided to cast ready mixed concrete uniformly on the whole by extending the net interval among reinforcing bars. CONSTITUTION: An asymmetric reinforcing bar(4) used a main reinforcing bar(4a) has the same section as a circular reinforcing bar(4') and is arranged in the principal axial direction. Then, the total section is equally kept, and the net interval of the reinforcing bar is increased by a lattice reinforcing rod frame(5). Cement mortar and gravel are filled up in the inside of a mold form united in the outside of the lattice reinforcing rod frame by casting ready mixed concrete through the interval extended latticed-reinforcing-rod frame. The asymmetric reinforcing rod is 7.942cm¬2 in the sectional area like a D32 reinforcing rod of a D32 circular section and 36.5cm in the major axis, and 27.8cm in the minor axis. The net interval is extended as much as 7.5cm between main reinforcing bars. In the double joint part, the net interval is extended as much as 5cm.
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