Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Reversed Cyclic Loading Test of Post-Tensioned Precast Concrete Beam-Column Connections with 2400MPa Prestressing Strands

2400MPa 긴장재가 적용된 포스트텐션 프리캐스트 콘크리트 보-기둥 접합부의 반복가력실험

  • 황진하 (토론토대학교 토목공학과) ;
  • 최승호 (서울시립대학교 건축공학과) ;
  • 이득행 (나자르바예프대학교 토목공학과) ;
  • 김강수 (서울시립대학교 건축학부) ;
  • 우운택 ((주)동양구조안전기술 구조공학시스템연구소)
  • Received : 2017.09.08
  • Accepted : 2017.10.19
  • Published : 2017.12.26
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Abstract

The precast concrete (PC) method has many advantages in fast construction, quality control, etc. In domestic construction market, however, its application has been quite limited because of the concerns about structural integrity and seismic performances due to the discrete connections between precast concrete members. By applying the post-tensioning method, the precast beam-column connection can be well tightened, allowing improved structural integrity, and proper seismic performances can be also achieved. In this study, reversed cyclic tests have been conducted on the beam-column connection specimens, where the test variables included the compressive strength of grouting mortar and the tensile strengths of prestressing strands, based on which their seismic performances have been examined in detail. The post-tensioned PC beam-column connections showed good seismic performances comparable to that of the monolithic reinforced concrete connection specimen. When 2400 MPa prestressing strands are applied to the beam-column connection, it is preferable to adjust the prestress level similar to that applied for the 1860 MPa prestressing strands to avoid premature local crushing failures at the beam-column connections.

Keywords

Acknowledgement

Supported by : 국토교통과학기술진흥원

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