| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
This study involves a rehabilitation method (emergency retrofitting) for restoring the axial compression capacity and shear resistance mechanism of shear-damaged reinforced concrete (RC) columns. In this shear-damaged RC columns emergency retrofitting, aramid fiber belts and couplers are employed. Prestressed aramid fiber belts are applied on the damaged RC column, offering active and passive confinement as well as shear strengthening. The results reveal the following: (1) The emergency-retrofitted RC column with high lateral confining pressure exhibits flexural behavior. (2) In the emergency-retrofitted RC column with unbonded rebars, the lateral force capacity and diagonal concrete stress of the arch mechanism increase with rising lateral confining pressure. (3) The emergency retrofitting with high lateral confining pressure causes significant axial compression capacity and compressive ductility recovery.
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