Falling-weight impact tests of flexurally reinforced T-shaped PC beams with AFRP sheet

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  • AFRPシートで曲げ補強したT型PC梁の重錘落下衝撃実験
  • AFRPシートで曲げ補強したT型PC梁の重錘落下衝撃実
  • AFRP シート デ マゲ ホキョウ シタ Tガタ PCリョウ ノ ジュウ スイ ラッカ ショウゲキ ミノル

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Abstract

In this study, in order to investigate the impact resistant behavior of PC beams and to develop an effective flexurally reinforcing method for those, falling-weight impact tests of the flexurally reinforced T-shaped PC beams with AFRP sheet were conducted taking with/without bonding FRP sheet, loading method (static and impact loading), and impact velocity as experimental variables. From this study, the following results were obtained: 1) the PC beams suffered by tendon yielding tend to be collapsed easily with slightly increasing impact energy; 2) the deflection of the PC beams can be restrained due to flexurally reinforcing with AFRP sheet; and 3) the AFRP sheet was debonded due to the peeling action of the critical diagonal crack developed in the lower concrete cover near the loading points, irrespective of the loading method.

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