Flexural Behavior of Dual Prestress Concrete Beams Using High Performance Steel Fiber Reinforced Concrete Subjected to Cyclic Loading

고성능 강섬유보강 콘크리트가 적용된 반복하중을 받는 이중 프리스트레스 콘크리트 보의 휨 거동

This study presents results from an experimental work for two normal prestressed concrete beams and three dual prestressed concrete beams. The dual prestressed concrete beams made with normal concrete in compression zone and high performance steel fiber reinforced concrete in partial depth of tension zone. Through cyclic loading test under low frequency, structural behavior and resistance to dynamic loading for dual prestressed concrete beams are investigated. Considerable increase of crack and yield load capacity of Dual prestressed concrete beam is shown compared with normal prestressed concrete beam. In addition, re-loading and un-loading rigidity of dual prestressed concrete beam under cyclic loading are increased comparing with normal prestressed concrete beam.