장방형 단면을 갖는 프리텐션부재의 프리스트레스 도입시 허용압축응력 (Allowable Compressive Stress of Pre-Tensioned Members with Rectangular Section at Transfer)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 구조계 / 27권 / 5호 / 57 ~ 67페이지
· 저자명 : 이정연, 이득행, 김강수, 황진하, 임주혁, 이진섭

초록

Prestressed concrete structural system is the one of the best alternatives to satisfy deflection requirements for the long and slender span members. Especially, pre-tension member can be precasted at factory that reduces construction waste by minimizing the onsite work and construction duration, which is considered as an eco-friendly and economical structural method. However,the economic efficiency of the pre-tension system heavily depends on the transfer time as the pre-tensioned member need to acquire an proper compressive strength at transfer. Unfortunately, the allowable compressive stresses in many codes of practice are based on only experience without theoretical consideration, which also are often very conservative. To solve out such problems, this research proposed the allowable compressive stress based on ultimate strength design method, considering main variables such as shapes of cross section, intensity of prestress, and eccentricity of tendons.

영어초록

Prestressed concrete structural system is the one of the best alternatives to satisfy deflection requirements for the long and slender span members. Especially, pre-tension member can be precasted at factory that reduces construction waste by minimizing the onsite work and construction duration, which is considered as an eco-friendly and economical structural method. However,the economic efficiency of the pre-tension system heavily depends on the transfer time as the pre-tensioned member need to acquire an proper compressive strength at transfer. Unfortunately, the allowable compressive stresses in many codes of practice are based on only experience without theoretical consideration, which also are often very conservative. To solve out such problems, this research proposed the allowable compressive stress based on ultimate strength design method, considering main variables such as shapes of cross section, intensity of prestress, and eccentricity of tendons.

참고자료

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