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A Study on Stress Properties for Cable Anchorage zone of Cable Stayed Prestressed Concrete Box Girder

케이블로 지지된 프리스트레스트 콘크리트 박스거더 정착부의 응력특성에 관한 연구

  • Tae, Ghi-Ho (Department of Civil-Engineering, Seoul National University of Science and Technology) ;
  • Kim, Doo-Hwan (Department of Civil-Engineering, Seoul National University of Science and Technology) ;
  • Byun, Yun-Joo (Dong Ho Engineering Co.) ;
  • Song, Kwan Kwon (College of Resources and Civil Engineering, Northeastern University)
  • 태기호 (서울과학기술대학교 건설시스템디자인공학과) ;
  • 김두환 (서울과학기술대학교 건설시스템디자인공학과) ;
  • 변윤주 ((주) 동호) ;
  • 송관권 (중국 동북대학 자원여토목공정학원)
  • Received : 2012.03.13
  • Accepted : 2012.11.05
  • Published : 2012.12.31

Abstract

Anchorage zone in prestressed concrete cable stayed bridges is very important area due to the more accurate analysis is needed to estimate the behavior. In the study, since the cable anchorage zone in the prestressed concrete cable-stayed bridge is subject to a large amount of concentrated tendon forces, it shows very complicated stress distributions and causes a serious local cracks. Accordingly, It is necessary to investigate the parameters of affecting the stress properties, such as the cable inclination, the position of anchor plate, the modeling method and the three dimensional effect. The tensile stress distribution of anchorage zone is compared to the actual design condition by varing the stiffness of spring element in the local modeling and an appropriate position of anchor plate is determined. These results would be elementary data to the stress state of anchorage zone and more efficient design.

Acknowledgement

Supported by : 서울과학기술대학교

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