[CS2-27] CONSTANT LOW-ENERGY CONSECUTIVE DROP-WEIGHT IMPACT LOADING FOR RC BEAMS STRENGTHENED IN FLEXURE WITH LARGE-VOLUME OF AFRP SHEETS
キーワード:FRP sheet, strengthening in flexure, consecutive impact loading, RC beams, sheet debonding
To establish an adequate upgrading method for RC beams under impact loading, consecutive drop-weight impact loading tests for the RC beams strengthened in flexure with AFRP sheets were conducted.The results obtained as follows: 1) in the cases of energy-increasing consecutive and single impact loading, the beams reached the ultimate state with the sheet debonding; 2) in the case of constant low-energy consecutive impact loading, the sheet did not debond and the concrete around the loading point crushed due to accumulated damages; and 3) the sheet tends to debond when the absolute residual displacement of the beam was less than the calculated deflection at the ultimate state under static loading.
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