Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Static Shear Strength of Cast-in Anchors with Stirrup Reinforcement

스터럽 보강 선설치 앵커의 정적 전단하중에 대한 저항 강도

  • Received : 2015.10.15
  • Accepted : 2015.12.28
  • Published : 2016.02.27
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Abstract

An experimental study was conducted to evaluate the static shear strength of stirrup-reinforced cast-in anchors. The test parameters considered herein are an existence of front bearing bar and concrete crack. M36 anchor was used with an edge distance of 180mm. HD-10 bars were used for all reinforcing bars and the stirrups were placed with 100mm spacing. The shear resistance increased by 16% when the front bearing bar was installed. Meanwhile, the resistance reduced only 5% in the cracked concrete compared with the uncracked concrete. The test results showed that ACI 318 and ETAG 001 specifications could estimate the shear strength of stirrup-reinforced anchors conservatively and a rational method was proposed. A consideration on the fracture strength of stirrup-reinforced anchor is also given.

본 연구에서는 스터럽 보강 선설치 앵커의 정적 전단하중에 대한 저항강도 평가를 위한 실험 연구를 수행하였다. 실험변수로는 전면지압철근 유무와 콘크리트 균열 유무로 설정하였다. 앵커는 M36, 연단거리는 180mm로 하였다. 모든 철근은 HD-10 철근을 사용하고 스터럽의 간격은 100mm로 하였다. 실험으로부터 전면지압철근을 설치한 경우 스터럽 저항강도는 16% 증가하였다. 한편 균열 콘크리트에서의 저항강도는 비균열 콘크리트에 비해 5% 감소에 불과하였다. 실험 결과로부터 ACI 318 및 ETAG 001 기준은 스터럽의 저항강도를 안전측으로 평가하였으며, 적절한 강도 평가 방안을 제안하였다. 마지막으로 스터럽 보강 시 앵커 본체의 파괴강도에 대한 고찰을 제시하였다.

Keywords

References

  1. Fuchs, W., Eligehausen, R., and Breen, J.E. (1995) Concrete Capacity Design(CCD) Approach for Fastenings to Concrete, ACI Structural Journal, Vol.92, No.6, pp.794-802.
  2. Shirvani, M., Klingner, R.E., and Graves III, H.L. (2004) Berakout Capacity of Anchors in Concrete-Part 1: Tension, ACI Structural Journal, Vol.101, No.6, pp.812-820.
  3. Muratli, H., Klingner, R.E., and Graves III, H.L. (2004) Breakout Capacity of Anchors in Concrete-Part 2: Shear, ACI Structural Journal, Vol.101, No.6, pp.821-829.
  4. ETAG 001 (1997, Rev. 2008) Guideline for European Technical Approval of Metal Anchors for Use in Concrete, Annex C : Design Methods for Anchorages, European Organization for Technical Approvals(EOTA).
  5. ACI Committee 349 (2001) Code Requirements for Nuclear Safety Related Concrete Structures, ACI 349-01, Appendix B Anchoring to Concrete, American Concrete Institute.
  6. ACI Committee 318 (2002) Building Code Requirements for Structural Concrete and Commentary, ACI 318-02, Appendix D Anchoring to Concrete, American Concrete Institute.
  7. ACI Committee 318 (2008) Building Code Requirements for Structural Concrete and Commentary, ACI 318-08, Appendix D Anchoring to Concrete, American Concrete Institute.
  8. Eligehausen, R., Mallee, R., and Silva, J.F. (2006) Anchorage in Concrete Construction, Ernst & Sohn, Germany.
  9. Petersen, D. and Zhao, J. (2013) Design of Anchor Reinforcement for Seismic Shear Loads, ACI Structural Journal, Vol.110, No.1, pp.53-62.
  10. ACI Committee 318 (2011) Building code requirements for structural concrete and commentary, ACI 318-11, Appendix D: Anchoring to concrete, American Concrete Institute.
  11. 한국콘크리트학회(2012) 콘크리트구조기준해설-부록 II 콘크리트용 앵커, 한국콘크리트학회, 기문당. Korea Concrete Institute (2012) Concrete Structure Design Code and Commentary-Appendix II Anchoring to concrete, Korea Concrete Institute, Kimoondang (in Korean).
  12. KOCED (2009) Website about Seismic Simulation Test Center, available in , retrieved December 16, 2015.
  13. FIB (2008) Fastenings to Concrete and Masonry Structures, Special Activity Groups (SAG) 4 draft report, Federation Internationale du Beton.

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  2. 스터럽 보강 선설치 앵커의 지진모의실험에 의한 동적 전단 저항강도 평가 vol.30, pp.2, 2018, https://doi.org/10.7781/kjoss.2018.30.2.067