초록 열기/닫기 버튼
이 연구에서는 인장재의 직경과 강재비를 변수로 인장재로 보강된 UHPC의 직접인장 실험을 수행하였으며, 상세분석을 통하여 UHPC의 인장거동 및 균열거동 특성을 규명하고자 하였다. 또한, 현행기준과 기존 연구자들의 제안식을 상세히 비교 분석함으로써 UHPC 부재의 인장거동 및 균열거동 분석에 적용 가능한지를 파악하고자 하였다.
Ultra-high performance concrete (UHPC) has high compressive and tensile strengths due to the particle packing, and its ductile behavior canbe ensured by utilizing steel fibers. However, since the UHPC members exhibit different characteristics of crack behavior and tensilebehavior from normal concrete, the tension stiffening and cracking characteristics of the UHPC should be accurately modeled for the designand analysis of the UHPC members. In this study, uniaxial tension tests was conducted on the UHPC members with strands, where the testvariables were diameter and reinforcing ratio of strands. Detailed analyses were also conducted to identify the tensile characteristics andcrack behavior of the UHPC members. By comparing the test results with current code provisions and other models proposed by existingresearchers, their applicability for estimation of crack behavior of the UHPC members was examined.
키워드열기/닫기 버튼
ultra-high performance concrete, tensile behavior, strain hardening, cracking behavior, crack spacing
