지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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본 연구는 고강도 확대머리 철근으로 정착된 춤이 깊은 보를 대상으로 전단실험을 실시하고 확대머리 철근의 정착 및 전단보강근 유무에 따른 전단성능을 평가하고자 실험을 진행 하였다. 주철근인 고강도 확대머리 철근을 기계적 정착방법과 섬유를 혼입에 따른 춤이 깊은 보의 성능 평가를 위하여 스트럽 보강 유무와 단부 정착길이, 섬유 혼입율 변수로 실험적 연구를 진행하였으면 그 결과 다음과 같다.
모든 실험체가 최대내력 이후 취성적 파괴 거동을 나타내었지만 초기에는 휨 균열부터 일어났다. 스트럽 보강을 한 실험체 일수록 실험체의 최대내력이 증가 하였으면 보강상세는 내력에 독립적이지 않고 상호 연관성이 있는것으로 평가되었다. 단부 정착 길이가 클수록 최대내력이 증가됨을 평가 되었다. 확대머리 철근의 단부 정착길이는 깊은 보의 전단강도 큰 영행을미침을 알 수 있었으며, 깊은 보의 전단강도 향상을 위하여 실제 하부철근에 작용하는 인장력이 크지 않을 지라고 충분한 단부 정착길이를 확보할 필요가 있는 것으로 사료된다.
모든 실험체가 최대내력 이후 취성적 파괴 거동을 나타내었지만 초기에는 휨 균열부터 일어났다. 스트럽 보강을 한 실험체 일수록 실험체의 최대내력이 증가 하였으면 보강상세는 내력에 독립적이지 않고 상호 연관성이 있는것으로 평가되었다. 단부 정착 길이가 클수록 최대내력이 증가됨을 평가 되었다. 확대머리 철근의 단부 정착길이는 깊은 보의 전단강도 큰 영행을미침을 알 수 있었으며, 깊은 보의 전단강도 향상을 위하여 실제 하부철근에 작용하는 인장력이 크지 않을 지라고 충분한 단부 정착길이를 확보할 필요가 있는 것으로 사료된다.
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표 목 차 ··············································································································ⅲ그 림 목 차 ··············································································································ⅳ국 문 요 약 ··············································································································ⅴⅠ. 서 론 ·················································································································11. 연구 배경········································································································12. 연구 목적 및 내용 ························································································4Ⅱ. 기존 연구 ···········································································································61. 기계적 정착에 관한 기존 연구 ··································································62. 설계 기준식 ····································································································8Ⅲ. 전단 실험 ···········································································································161. 실험체 계획 ····································································································162. 실험 방법········································································································19Ⅳ. 실험결과 및 분석 ····························································································241. 균열 및 파괴상황 ··························································································242. 하중-변위곡선 및 실험내력 ········································································24Ⅴ. 결론 ·····················································································································34Ⅵ. 참고문헌 ·············································································································36ABSTRACT ············································································································38감사의 글 ··················································································································39
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