Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Experimental Studies on Bond and Splice Performance of Splice Sleeve for Connecting Rebar

철근연결용 스플라이스 슬리브의 이음 및 부착성능에 대한 실험적 연구

  • Kang, Duk Man (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Park, Yong Gul (Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Lee, Hyeon Gi (Dept. of Civil Engineering, Gyeongnam National University of Science & Technology) ;
  • Moon, Do Young (Dept. of Civil Engineering, Kyungsung University)
  • Received : 2017.04.06
  • Accepted : 2017.04.19
  • Published : 2017.04.30
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Abstract

The PC (Precast Concrete) construction method is a technique where concrete members that have been produced in a plant are constructed on site. Thus, continuity and secure integration of a structure that can be obtained by connecting rebars at splicing joint for PC members are the main areas of concern for this method. To evaluate the splicing and bonding performance according to application of a splice sleeve for connecting rebar in this research study, the diameter of rebar, development length, grouting strength etc. were set as variables. The performance and stiffness of splicing according to the development length of grout strength were measured and evaluated. In addition, by conducting comparative analysis on each of the variables, the factors that affected the splice sleeve for connecting rebar were discussed. The results confirmed that the strength and stiffness of the splice sleeve for connecting rebar were significantly affected by the development length while the increase in performance according to grout strength was not as significant.

콘크리트 구조물의 고품질화와 시공 효율성에 대한 중요성이 강조됨에 따라 프리캐스트 콘크리트 공법 적용이 지속적으로 증가하고 있다. PC공법은 공장에서 제작된 콘크리트 부재를 현장에서 조립하는 방식으로 부재접합부에 철근이음을 통한 구조체의 연속성 및 일체성 확보가 공법의 주요 현안이다. 따라서 본 연구에서는 철근연결용 스플라이스 슬리브 적용에 대한 이음 및 부착성능을 평가하기 위해 철근의 직경, 철근 정착길이 및 그라우트 강도 등에 대한 변수를 설정하고 철근의 정착길이 및 그라우트 강도에 따른 이음부의 성능 및 강성을 평가하며, 각 변수들의 비교 분석을 통해 스플라이스 슬리브가 철근연결부에 영향을 미치는 인자들에 대해 고찰하였다. 그 결과, 철근연결용 스플라이스 슬리브의 성능 및 강성은 철근의 정착길이에 따른 영향이 가장 크게 나타났으며, 그라우트 강도에 따른 부착 및 성능 증진은 크지 않은 것으로 확인되었다.

Keywords

References

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