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

콘크리트용 후설치 세트앵커의 전단파괴거동에 관한 실험적 연구

  • 엄찬희 (관동대학교 토목공학과 대학원) ;
  • 유승운 (관동대학교 토목공학과)
  • Received : 2013.08.07
  • Accepted : 2014.01.14
  • Published : 2014.04.01

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 a concrete structures. Depending on the shear strength of steel, the strength of concrete, edge distance and anchor interval, etc, the anchor loaded in shearing exhibits various failure modes such as steel failure, concrete failure, concrete pryout. In this study, the objective is to investigate the effects of the variations like anchor embedment depth, anchor interval, edge distance and concrete strength on the shear failure behavior of post-installed concrete set anchor embedded in concrete. The results of embedment depth experiments show that concrete strength has much effection on the shallow embedment depth. Steel failure occur to all results of the anchor interval experiments, but concrete is failed when edge distance experiments that less than the embedment depth. Through the comparision of the same parameters experiments results show that as strong as concrete strength are the displacement results are small.

최근 콘크리트 구조물의 보수 보강 및 리모델링 시 구조부재를 부착시키거나 고정하는데 있어서 시공의 유연성 및 용이성으로 후설치 앵커의 사용량이 증가하고 있는 실정이다. 전단하중을 받는 앵커는 강재와 콘크리트의 강도, 연단거리, 앵커간격 등에 따라 다양한 파괴모드를 보이며 대표적인 파괴모드는 강재 파괴, 콘크리트 파열 파괴, 콘크리트 프라이 아웃 파괴 등으로 나타난다. 본 연구에서는 매입깊이, 앵커간격, 연단거리 및 콘크리트 강도를 변수로 한 세트앵커의 전단 실험을 통하여 콘크리트에 매입된 후설치 앵커의 전단 파괴거동에 미치는 영향을 규명하는 것을 그 목적으로 한다. 매입깊이 변수의 실험 결과 매입깊이가 얕을수록 콘크리트 강도의 영향이 큰 것으로 나타났다. 앵커간격 변수의 실험 결과 모두 강재 파괴가 발생하였으며, 연단거리 변수의 실험 결과 매입깊이 이하인 경우 모두 콘크리트 파괴가 발생하였다. 동일한 변수의 실험 결과를 비교해 보았을 때 콘크리트 강도가 클수록 변위가 상대적으로 더 작게 나타났다.

Keywords

References

  1. ACI Committee 349. (1990). "Code requirements for nuclear safety related concrete structures (ACI 349-01): Appendix B Anchoring to Concrete." pp. 80-86.
  2. Hwang, Y. S. (2010). A study on the fracture resistance characteristics of post-installed anchor, M.S. Dissertation, Seoul National University of Science and Technology.
  3. Jin, S. H. (2011). Tension and shear strenth valuation of large size concrete anchor bolt, M.S. Dissertation, Pusan National University.
  4. Kim, J. S., Kwon, M. H., Seo, H. S. and Park, J. H. (2013). "Performance evaluation and analysis model for the post-installed anchor." Journal of Korean Society of Hazard Mitigation, Korean Society of Hazard Mitigation, Vol. 13, No. 2, pp. 89-95 (in Korean).
  5. Kim, S. Y., Han, D. J. and Shin, C. H. (2005). "Strength of anchors under load applied angles." Journal of Korean Society of Hazard Mitigation, Korean Society of Hazard Mitigation, Vol. 5, No. 1, pp. 69-76 (in Korean).
  6. Kim, S. Y. and Kim, K. S. (2003). "Shear strength of anchors installed in uncracked and unreinforced concrete." Journal of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 19, No. 9, pp. 69-78 (in Korean).
  7. Ko, J. Y., Kim, S. Y., Kim, Y. H., Seo, S. Y. and Kim, K. S. (2002). "Shear strength of single anchors in uncracked and unreinforced concrete." Proceedings of Annual Conference of the Architectural Institute of Korea, Architectural Institute of Korea, Vol. 22, No. 2, pp. 197-200 (in Korean).
  8. Lee, K. M., Lee, C. Y., Jung, S. H. and Choi, S. W. (2009). "Tensile and shear test method for post-installed mechanical anchors embedded in concrete." Proceedings of Magazine of the Korea Concrete Institute, KCI, Vol. 2009, No. 5, pp. 97-98 (in Korean).
  9. Moon, I. H. and Lee, N. H. (2000). "Break-out strength of anchor bolt based on concrete fracture model." Proceedings of Conference on Korean Society of Civil Engineers, KSCE, pp. 801-804 (in Korean).
  10. Nam, Y. H. (2006). Development of automated design system for concrete anchor systems, M.S. Dissertation, Hanyang National University.
  11. Son, J. W. (2002). Fracture analysis of concrete anchor systems subjected to shear loads, M.S. Dissertation, Yonsei University.
  12. Werner, F. and Rolf, E. (1989). Tragverhalten con befestin-gungsmittein im gerissenen beton bei querzugbeanspruchung, Report 1/41-89/15 Universtat Stuttgart.
  13. Werner, F., Rolf, E. and John E. B. (1995). "Concrete capacity design(CCD) approach for fastening to concrete." ACI Structural Journal, Vol. 92, No. 1, pp. 73-94.
  14. Wiewel, H. (1991). Design guidelines for anchorage to concrete, ACI SP-130, pp. 1-18.
  15. Yoo, S. W., Jung, S. H., Kwak, K. S. and Lee, J. H. (2006). "Experimental study on pull out characteristics of adhesive anchor." Journal of the Korean Society of Civil Engineers, KSCE, Vol. 26, No. 3, pp. 555-563 (in Korean).

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