RC 및 SFRC 외부 보-기둥 접합부에 대한 고강도 확대머리 철근의 정착강도
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 장덕영 | - |
dc.contributor.author | 정재원 | - |
dc.contributor.author | 이강석 | - |
dc.contributor.author | 김승훈 | - |
dc.date.accessioned | 2024-01-20T09:03:33Z | - |
dc.date.available | 2024-01-20T09:03:33Z | - |
dc.date.issued | 2023-12 | - |
dc.identifier.issn | 2234-6937 | - |
dc.identifier.issn | 2287-6979 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/117878 | - |
dc.description.abstract | 본 연구에서는 철근콘크리트(RC) 및 강섬유보강콘크리트(SFRC) 외부 보-기둥 접합부에서 SD700인 확대머리철근의 정착성능을실험적으로 평가하였다. 실험체는 총 10개로 제작되었으며 강섬유 보강 유무, 정착길이, 보의 유효춤, 스터럽 배근상세 등을 변수로 계획하였다. 실험결과, 실험체는 실험변수에 따라 측면파열파괴, 콘크리트 브레이크아웃파괴, 전단파괴 등이 나타났다. 정착길이를 변수로 한 RC 계열실험체에서 정착길이가 25~80% 증가함에 따라 정착강도는 26.5~42.2% 증가하여 정착길이에 비례하지 않음을 확인하였다. 보의 유효춤이 2 배인 JD 계열 실험체는 콘크리트 브레이크아웃파괴가 나타나 기준 실험체에 비하여 31.5~62% 최대내력이 감소하였다. 확대머리철근 주위의전단보강근 간격이 기준실험체에 비하여 1/2배인 S 계열 실험체는 8.4~ 9.7% 최대내력이 증가하였다. SFRC 실험체 콘크리트 압축강도가 RC 실험체 콘크리트 압축강도에 비하여 29.3% 작게 평가되었지만, 정착강도는 7.3~12.2% 더 크게 증가하였다. 이에 강섬유 보강에 따른 확대머리철근의 정착성능이 크게 향상됨을 확인하였다. KDS 기준의 정착길이 92%, 110%로 배근된 실험체의 실험 최대내력이 이론내력에 비하여92%, 99%인 결과를 고려하면 안전율을 더욱 크게 고려할 필요가 있는 것으로 판단된다. 또한 정착길이 대비 보의 유효춤을 고려한 설계식 제시가 요구된다. | - |
dc.description.abstract | In this study, the development performance of the head bars, which is SD700, was experimentally evaluated at the RC (reinforced concrete) or SFRC (steel fiber reinforced concrete external beam-column joint. A total of 10 specimens were tested, and variables such as steel fibers, length of settlement, effective depth of the beam, and stirrups of the column were planned. As a result of the experiment, the specimens showed side-face blowout, concrete breakout, and shear failure depending on the experimental variables. In the RC series experiments with development length as a variable, it was confirmed that the development strength increased by 26.5~42.2% as the development length increased by 25-80%, which was not proportional to the development length. JD-based experiments with twice the effective depth of beams showed concrete breakout failure, reducing the maximum strength by 31.5% to 62% compared to the reference experiment. The S-series experiment, in which the spacing of the shear reinforcement around the enlarged head reinforcement was 1/2 times that of the reference experiment, increased the maximum strength by 8.4 to 9.7%. The concrete compressive strength of SFRC was evaluated to be 29.3% smaller than the concrete compressive strength of RC, but the development strength of SFRC specimens increased by 7.3% to 12.2%. Accordingly it was confirmed that the development performance of the head bar was greatly improved by reinforcing the steel fiber. Considering the results of 92% and 99% of the experimental maximum strength of the experiment arranged with 92% and 110% of the KDS-based settlement length, it is judged that the safety rate needs to be considered even more. In addition, it is required to present a design formula that considers the effective depth of the beam compared to the development length. | - |
dc.format.extent | 8 | - |
dc.language | 한국어 | - |
dc.language.iso | KOR | - |
dc.publisher | 한국구조물진단유지관리공학회 | - |
dc.title | RC 및 SFRC 외부 보-기둥 접합부에 대한 고강도 확대머리 철근의 정착강도 | - |
dc.title.alternative | Development Strengths of High Strength Headed Bars of RC and SFRC Exterior Beam-Column Joint | - |
dc.type | Article | - |
dc.publisher.location | 대한민국 | - |
dc.identifier.doi | 10.11112/jksmi.2023.27.6.94 | - |
dc.identifier.bibliographicCitation | 한국구조물진단유지관리공학회 논문집, v.27, no.6, pp 94 - 101 | - |
dc.citation.title | 한국구조물진단유지관리공학회 논문집 | - |
dc.citation.volume | 27 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 94 | - |
dc.citation.endPage | 101 | - |
dc.identifier.kciid | ART003025186 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | kci | - |
dc.subject.keywordAuthor | Steel fiber | - |
dc.subject.keywordAuthor | Beam-column joint | - |
dc.subject.keywordAuthor | SD700 | - |
dc.subject.keywordAuthor | Headed bar | - |
dc.subject.keywordAuthor | Development strength | - |
dc.subject.keywordAuthor | 강섬유 | - |
dc.subject.keywordAuthor | 보-기둥 접합부 | - |
dc.subject.keywordAuthor | SD700 | - |
dc.subject.keywordAuthor | 확대머리철근 | - |
dc.subject.keywordAuthor | 정착강도 | - |
dc.identifier.url | https://kiss.kstudy.com/Detail/Ar?key=4063539 | - |
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