| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
In this research upgrading method of existing anchor-bolt in the exposed-type column bases is proposed and following conclusions are obtained according to experimental studies. (1)Reinforced anchor-bolts show much upgraded performance in strength and deformation. (2)Evaluating method of strength and elongation of upgraded anchor-bolts are proposed, and these methods can estimate the experimental strength and elongation in the safe side. (3)Those anchor-bolts reinforced at the construction site have the strength and elongation as much as those reinforced in the factory, if the eccentricity of the hole is less than 2.5mm. (4)Reinforced anchor bolts have deformation capacity satisfying the rotation capacity 0.03rad demanded to exposed-type column bases, which is mostly equivalent to 0.03 strain of anchor-bolt.
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