Results and High Growth of Plate Anchored Shear Reinforcement Bars(Head-bar) Technology |
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Tatsuo MIOKE*1, Weijian ZHAO*2 and Koichi KANO*3 |
Head-bar means plate anchored bars for shear
reinforcement. Head-bar has been recognized as retaining high capacity of earthquake
resisting compared with usual shear reinforcement bars. But it has been intended
for a shear reinforcement bar that has semicircular hook,the efficiency is
not evident when compared with another type of shear reinforcement bars. We
carried out cyclic loading test of wall members with four types of shear reinforcement
bars. The results demonstrated that Head-bar improved ductility of the shear
wall better than enclose type of shear reinforcement bars which are usually
used on railroad structures. And the results evaluted by the RAILWAY TECHNICAL
RESEARCH INSTITUTE. A sales of Head-bars will achieve four millions in this
year. |
keywords: |
capacity of earthquake resisting,
shear reinforcement bars, effect on confinement of principal bars, effect on
confinement of concrete, cyclic loading test |