Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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A Study on the Design of Special Circular Plate Anchorage for Post-tension

원형 정착판을 사용한 포스트텐션 특수정착구의 설계에 관한 연구

  • 최규형 (상지대학교 건설시스템공학과) ;
  • 노병철 (상지대학교 건설시스템공학과) ;
  • 임정훈 (상지대학교 건설시스템공학과)
  • Received : 2016.08.24
  • Accepted : 2016.09.20
  • Published : 2016.11.01
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Abstract

Bearing stress near anchor plates is usually very high due to prestressing force in anchorage zone of concrete structure used post-tensioned prestressed method. In order to effective utilization of cross section and crack control, appropriate size of anchorage plates should be used to prevent crack initiation and failure of concrete structures eventually. This study aims to suggest equation for effective area of bearing plate of rectangle type and circular type by Highway Bridge Design Specification and PTI etc. A shape factor according to bearing plate shape is suggested based on numerical analysis, and it can be used suitability for design of special anchorage plate dimension.

포스트텐션 공법을 적용한 콘크리트 부재의 정착구역에서 정착판 근처의 지압응력은 일반적으로 높은 프리스트레스 하중에 의해 발생한다. 따라서 단면의 효율적인 활용과 콘크리트 부재의 파괴로 이어질 수 있는 균열제어를 위해 적절한 정착판의 크기가 제시되어야 한다. 본 연구에서는 도로교설계기준 및 PTI 등에 의해 사각형 정착판과 원형 정착판의 유효면적에 대한 관계식을 제안하였다. 또한 정착판의 형상에 따라 형상계수를 제안하였으며, 유한요소해석을 통해 적절성을 분석하였다.

Keywords

References

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Cited by

  1. Development and Analysis of Unbonded Post-tensioned Anchorage for Single Tendon vol.31, pp.1, 2018, https://doi.org/10.7734/COSEIK.2018.31.1.39
  2. 2,400 MPa 강연선용 포스트텐션 정착구의 하중전달성능 vol.22, pp.6, 2016, https://doi.org/10.11112/jksmi.2018.22.6.063