Browse > Article
http://dx.doi.org/10.12652/Ksce.2010.30.3A.329

Evaluation of Bursting Behavior in Anchorage Zone of PSC I Girders  

Choi, Kyu Chon (한국도로공사 도로교통연구원)
Park, Young Ha (한국도로공사 도로교통연구원)
Paik, In Yeol (경원대학교 토목환경공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.3A, 2010 , pp. 329-336 More about this Journal
Abstract
An experimental study to evaluate bursting behavior in anchorage zone of the standard PSC I girders (span length : 30 m) has been carried out. The arrangement of bursting reinforcement in anchorage zone of the standard PSC I girders is considered to be designed without accurately reflecting the stress flows in the end zone of the PSC I girders caused by presstressing forces of the tendons. Also, due to excessive arrangement of the bursting bars, the workability of the girder is decreased greatly. In this study, three specimens with the same dimensions as the end zone of the standard PSC I girder are prepared and the experiment is carried out by applying PS forces. The bursting reinforcement of each specimen consists of 100 mm, 200 mm, and 300mm spacings, respectively. The experimental results show that the range of the PS forces to cause crack in the anchorage zone of the specimen are more than 1.6 times of the design PS forces. The bursting cracks occur in the vertical direction on the inside of all specimens. After applying 2.7 times of the design PS force, some of the transverse bursting reinforcements only in the specimen reinforced by 300 mm spacing yielded. The experimental results show that the anchorage zone of the standard PSC I girders arranged by 300 mm spacing of the bursting reinforcements which is the maximum spacing allowed in the road bridge design specifications, can be considered safe enough.
Keywords
anchorage zone; bursting force; bursting reinforcement; bursting crack; spalling force; spalling reinforcement; spalling crack; PSC I girder;
Citations & Related Records
연도 인용수 순위
  • Reference
1 건설교통부(2007) 도로교설계기준, 사단법인 한국도로교통협회.
2 오병환, 임동환, 유승운(1994) 단일텐던 및 복수텐던이 설치된 프리스트레스 콘크리트 부재의 정착부 거동 연구, 대한토목학회논문집, 대한토목학회, 제14권 제6호, pp. 1329-1339.
3 한국콘크리트학회(2006) 콘크리트 구조부재의 스트럿-타이 모델 예제집, 사단법인 한국콘크리트학회, pp. 91-99.
4 Bain, S., Mugurama, H., and Ogaki, Z. (1957) Anchorage zone stress distribution in post-tensioned concrete members, Proceeding of world Conference on Prestressed Concrete, Univ. of California, San Francisco, CA, pp. 1-14.
5 Zielinski, J.L. and Rowe, R.E. (1960) An Investigation of the Stress Distribution in the Anchorage Zones of Post-Tensioned Concrete Members, Research Report No. 9, Cement and Concrete Association, London, September.
6 Breen, J.E., Cooper, R.L., and Gallaway, T.M. (1975) Minimizing construction Problems in Segmentally Precast Box Girder Bridges, Research Report No. 121-6F, Center for Highway Research, The University of Texas at Austin, August.