Journal of Korean Association for Spatial Structures (한국공간구조학회논문집)

Korean Association for Spatial Structures (한국공간구조학회)
권호 표지
DOI QR코드

DOI QR Code

Shear Performance Evaluation of Cast-in Specialty Inserts in Cracked Concrete according to Cyclic Loading Patterns

반복하중 패턴에 따른 균열 콘크리트에 매입된 선설치 인서트 앵커의 전단성능 평가

  • Jeong, Sang-Deock (Division of Architecture and Fire Protection Engineering, Pukyong National University) ;
  • Oh, Chang-Soo (Yang Soo Metals Co., Ltd.) ;
  • Lee, Chang-Hwan (Department of Architectural Engineering, Pukyong National University)
  • Received : 2023.04.24
  • Accepted : 2023.05.25
  • Published : 2023.06.15
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, a novel cast-in specialty insert was developed in Korea as an anchor for lightweight pipe supports, including fire-protection pipes. As these pipe supports and anchors play a critical role in transferring loads of fire-protection pipes to structural members, it is crucial to evaluate their seismic performance before applying the newly developed insert. In this study, the seismic shear performance of the insert anchors was evaluated through cyclic loading tests based on the loading protocols of ACI 355.2 and FEMA 461. Initially, five monotonic loading tests were conducted on the insert anchors in cracked concrete, followed by cyclic loading tests based on the monotonic test results. The findings revealed that the insert anchors exhibited negligible decrease in shear strength even after cyclic loading. Furthermore, a comparison of the maximum load and displacement of the insert anchors obtained under the loading protocols of ACI 355.2 and FEMA 461 was performed to investigate the applicability of the FEMA 461 loading protocol for anchor performance evaluation.

Keywords

Acknowledgement

본 성과물은 중소벤처기업부에서 지원하는 2021년도 산학연 Collabo R&D사업(No. S3103759)의 연구수행으로 인한 결과물임을 밝힙니다.

References

  1. Jeon, J. S., Kim, J. H., Oh, C. S., & Lee, C. H., "Tensile and Shear Strengths of New Type of Cast-in-Place Concrete Insert Anchors Under Monotonic Loading", Journal of Korean Association for Spatial Structures, Vol.21, No.2, pp.49~56, 2021, doi: 10.9712/KASS.2021.21.2.49 
  2. Jeong, S. D., Oh, C. S., & Lee, C. H., "Experimental evaluation of tension and shear capacities of new headed cast-in specialty inserts in cracked concrete", International Journal of Concrete Structures and Materials (Accepted). 
  3. Tan, J., Zhang, P., Feng, Q., & Song, G., "Passive Seismic Protection of Building Piping Systems - A Review", International Journal of Structural Stability and Dynamics, Vol.20, No.3, 2030001, 2020, doi: 10.1142/S0219455420300013 
  4. ACI Committee 355, "Qualification of Post-Installed Mechanical Anchors in Concrete (ACI 355.2-19) and Commentary", Farmington Hills, MI (USA): ACI, 2019. 
  5. Mahrenholtz, P., Eligehausen, R., Hutchinson, T. C., & Hoehler, M. S., "Behavior of Post-Installed Anchors Tested by Stepwise Increasing Cyclic Load Protocols", ACI Structural Journal, Vol.113, No.5, pp.997~1008, 2016, doi: 10.14359/51689023 
  6. Hoehler, M. S., & Eligehausen, R., "Behavior of Anchors in Cracked Concrete under Tension Cycling at Near-Ultimate Loads", ACI Structural Journal, Vol.105, No.5, pp.601~608, 2008.  https://doi.org/10.14359/19943
  7. Parks, J. E., Pantelides, C. P., Ibarra, L., & Sanders, D. H., "Stretch Length Anchor Bolts under Combined Tension and Shear", ACI Structural Journal, Vol.115, No.5, pp.1317~1328, 2018, doi: 10.14359/51702236 
  8. Stehle, E. J., & Sharma, A., "A new displacement-based approach for pulsating tension load tests of post-installed anchors for the use in structural applications under seismic actions", Engineering Structures, Vol.211, 110431, 2020, doi: 10.1016/j.engstruct.2020.110431 
  9. Stehle, E. J., & Sharma, A., "Review of Testing and Qualification of Post-Installed Anchors under Seismic Actions for Structural Applications", CivilEng, Vol.2, No.2, pp.406~420, 2021, doi: 10.3390/civileng2020023 
  10. FEMA, "Interim Testing Protocols for Determining the Seismic Performance Characteristics of Structural and Nonstructural Components (FEMA-461)", Washington, DC (USA): Federal Emergency Management Agency, 2007. 
  11. Korea Agency for Technology and Standards (KATS), "KS F 2403: standard test method for making and curing concrete specimens", Seoul (Korea), Korean Standards Association, 2019. 
  12. Korea Agency for Technology and Standards (KATS), "KS F 2405: standard test method for compressive strength of concrete", Seoul (Korea), Korean Standards Association, 2017. 
  13. ACI Committee 374, "Guide for Testing Reinforced Concrete Structural Elements under Slowly Applied Simulated Seismic Loads (ACI 374.2R-13)", Farmington Hills, MI (USA): ACI, 2013. 
  14. Ministry of Land, Infrastructure and Transport (MOLIT), "Anchor Design Code for Concrete (KDS 14 20 54)", MOLIT, 2021.