- 프리텐션 프리스트레스트 콘크리트 부재의 정착길이 평가
- ㆍ 저자명
- 김의성,Kim. Ui-Seong
- ㆍ 간행물명
- 건설안전기술
- ㆍ 권/호정보
- 2009년|49권 2호|pp.84-91 (8 pages)
- ㆍ 발행정보
- 사)한국건설안전기술협회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
By bond mechanism between the prestressing strand and the concrete surrounding it, the effective force of prestressing must be transferred to the concrete entirely. The distance required to transfer the effective force of prestressing is called the transfer length, and the development length is the bond length required to anchor the strand as it resists external loads on the member. Transfer length was determined from the concrete strain profile at the level of the strands at transfer and development length was determined from various external loading lengths and compared with current code equation. Through the test results, bond failure is predicted based on the distress caused by cracks when they propagate within the transfer zone of prestressing strand. The current code equation was found to be conservative in comparison with the measured value.