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An Experimental Study on the Pullout Failure Behavior of Post-installed Concrete Set Anchor

후설치 콘크리트 세트앵커의 인발파괴거동에 관한 실험적 연구

  • Received : 2013.06.21
  • Accepted : 2013.11.14
  • Published : 2014.01.30

Abstract

Recently the use of concrete post-installed set anchors has been increasing because this constructing method is flexible and easy to attach or fix structural members when we repair, reinforce, or remodel structures. Accordingly, designers and builders of Korea depend on foreign design codes since there are no exact domestic anchor design codes that they could credit. The anchor in plain concrete loaded in tensile exhibits various failure modes such as concrete breakout, splitting, steel failure, pull-out and side-face blowout, that depending on the tensile strength of the steel, the strength of concrete, embedment depth, interval, the edge distance and the presence of adjacent anchor. The objective is to investigate the effects of the variations like anchor embedment depth, interval and edge distance on pull-out fracture behavior of post-installed concrete set anchor embedded in plain concrete.

최근 토목구조물의 보수 보강 및 리모델링시 구조부재를 부착시키거나 고정하는데 있어서 시공의 유연성 및 용이성으로 후설치 앵커의 사용량이 증가하고 있는 실정이지만 현재 우리나라에서는 설계자와 시공자가 신뢰할 수 있는 명확한 설계기준이 없는 상태로서 외국의 설계기준에 의존하고 있는 실정이다. 무근콘크리트에 매입된 앵커에 인발하중이 작용할 때 앵커의 다양한 파괴모드는 콘크리트 파괴, 쪼갬파괴, 강재파괴, 뽑힘파괴 및 측면파괴가 발생한다. 이것은 강재의 인장 강도, 콘크리트 강도, 매입 깊이, 앵커 간격, 연단거리와 인접 앵커의 존재에 따라 달라진다. 본 연구에서는 매입깊이, 앵커간격 및 연단거리를 변수로 한 후설치 콘크리트 세트앵커의 인발파괴실험을 통하여 무근콘크리트에 매입된 후설치 세트앵커의 인발거동에 미치는 영향을 규명하는 것을 그 목적으로 한다.

Keywords

References

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