Steel and Composite Structures

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Equivalent SDOF analysis considering initial clearance for steel-concrete composite blast-resistant doors

  • Hyeon-Sik Choi (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Seong-Ryong Ahn (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Young K. Ju (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Hun-Hee Cho (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Joon-Hak Lee (Department of Civil Engineering and Environmental Sciences, Korea Military Academy) ;
  • Sang-Ho Baek (Department of Civil Engineering and Environmental Sciences, Korea Military Academy) ;
  • Thomas H.-K. Kang (Department of Architecture and Architectural Engineering, Seoul National University)
  • Received : 2024.07.13
  • Accepted : 2024.10.13
  • Published : 2024.12.10
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Abstract

This study proposed a method for predicting the behavior of sliding blast-resistant doors by considering the initial clearance of the doors to address the challenge of predicting performance of the doors. The behavior of steel-concrete composite blast doors was divided into two stages based on the initial clearance, and an equivalent single-degree-of-freedom analysis was performed using the central difference method. Comparison with experimental results confirmed that considering the initial clearance is effective for accurately predicting the behavior of sliding doors. Based on these findings, a simplified equation was proposed and validated to facilitate the prediction of the maximum displacement of sliding blast doors. Finally, an optimization case study was conducted using the simplified equation to design steel-concrete composite sliding blast-resistant doors.

Keywords

Acknowledgement

The research described in this paper was financially supported by the National Research Foundation of Korea (2021R1A5A1032433) and the Institute of Engineering Research at Seoul National University.

References

  1. Anderson, M. and Dover, D. (2003), "Lightweight, blast resistant doors for retrofit protection against the terrorist threat", 2nd International Conference on Innovation in Architecture Engineering and Construction, Loughborough, UK, June.
  2. ASCE/SEI 59-11 (2011), Blast Protection of Buildings, American Society of Civil Engineers, Reston, VA.
  3. Baek, S. (2021), "A study on the improvement of explosion test on blast-proof door", Int. J. Military Affairs, 6(2), 11-20.
  4. Chopra, A.K. (2012), Dynamics of Structures: Theory and Applications to Earthquake Engineering, (4th edition), Prentice Hall, Upper Saddle River, NJ.
  5. FEMA 427 (2003), Primer for Design of Commercial Buildings to Mitigate Terrorist Attacks, Federal Emergency Management Agency; Washington DC.
  6. Fischer, K. and Häring, I. (2009), "SDOF response model parameters from dynamic blast loading experiments", Eng. Struct., 31(8), 1677-1686. https://doi.org/10.1016/j.engstruct.2009.02.040.
  7. Lee, K. and Shin, J. (2016), "Equivalent single-degree-of-freedom analysis for blast-resistant-design", Int. J. Steel Struct., 16(4), 1263-1271. http://dx.doi.org/10.1007/s13296-016-0073-0.
  8. Liu, Y., Yan, J., Li, Z. and Huang, F. (2019), "Improved SDOF and numerical approach to study the dynamic response of reinforced concrete columns subjected to close-in blast loading", Structures, 22, 341-365. https://doi.org/10.1016/j.istruc.2019.08.014.
  9. LSTC (2013), LS-DYNA Keyword User's Manual Ver. R7.0, Livermore Software Technology Corporation, Livermore, CA.
  10. Mendonca, F.B., Urgessa, G., Iha, K., Rocha, R.J. and Rocco, J.A.F.F. (2018), "Comparison of predicted and experimental behaviour of RC slabs subjected to blast using SDOF analysis", Defence Sci. J., 68(2), 138-143. https://doi.org/10.14429/dsj.68.11682.
  11. NEMA (2008), "A study on the standards and utilization plan of CBR facilities", National Emergency Management Agency, Seoul, South Korea.
  12. PDC-TR-06-08 (2008), Single Degree of Freedom Structural Response Limits for Antiterrorism Design, Protective Design Center; Omaha, NE.
  13. Shin, H.-S., Kim, S.-W., Moon, J.-H. and Kim, W.-W. (2020), "FE analysis on the structural behavior of a double-leaf blast-resistant door according to the support conditions", J. Comput. Struct. Eng. Institute Korea, 33(5), 339-349. (in Korean). http://doi.org/10.7734/COSEIK.2020.33.5.339.
  14. UFC 3-340-02 (2008), Structures to Resist the Effects of Accidental Explosions, Departments of Defense; Washington DC.