Research of Mechanical Anchoring by Use of Nut with Plate
BY Toshihiro Yoshizu and Koishiro Kodera

Concrete Research and Technology
Vol.21, No.3, Sep 2010 (Issue 54)


Synopsis:
Steel bars mechanically anchored with plate heads are being applied in place of 180-deg hooks. The method uses the bearing plates attached to the ends of the reinforcement to secure anchorages, and it is hoped that it will provide a solution to the problem of greater difficulty of execution and associated increased costs due to the requirement for higher-density reinforcement to improve seismic design, in resent years. Therefore I developed a plate nut fixed in the reinforcing steel bar. About the plate nut which we developed, we made the performance examination of each case. As a result of examination, the nuts with plate confirmed a thing having performance at the same level as conventional 180-deg hooks.
Keywords:
Reinforced Concrete, Transverse Reinforcing Steel Bar, Anchored Performance, Shear Reinforcement, Semicircle Hooks

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