Skip to main content
SpringerLink
Log in

An Equivalent Single-Degree-of-Freedom System to Estimate Nonlinear Response of Semi-fixed Flexural Members Under Impact Load

  • Research paper
  • Published:
Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

A quick and reliable method to estimate the nonlinear dynamic response of a structure is replacing it with an equivalent single-degree-of-freedom system. To analyze the equivalent system, determination of the load and mass transformation factors is essential. So far, these factors have been calculated just for elements with completely fixed or hinged supports. However, so many supports and connections behave as semi-fixed or semirigid and the assumption of being fully fixed or hinged does not comply with current practical conditions. The purpose of this study is to determine load and mass factors, ultimate resistance and nonlinear dynamic response for one-way flexural members with semi-fixed supports or a member of a frame with semirigid connections under impact (blast) load. The results of the proposed model are verified with available codes and references. Also, the importance of considering the members with semi-fixed supports in obtaining accurate responses is demonstrated.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

  • Al-Thairy H (2016) A modified single degree of freedom method for the analysis of building steel columns subjected to explosion induced blast load. Int J Impact Eng 94:120–133

    Article  Google Scholar 

  • Biggs JM (1964) Introduction to structural dynamics. McGraw-Hill, New York

    Google Scholar 

  • Chen WF, Lui EM (1987) Structural stability. Elsevier, Amsterdam

    Google Scholar 

  • Clough RW, Penzien J (2003) Dynamics of structures, 3rd edn. Computers and Structures Inc, Berkeley

    MATH  Google Scholar 

  • Dharaneepathy MV, Anandavalli N (2004) Nonlinear analysis of shock-loaded reinforced concrete structures. Int J Struct Stabil Dyn 4(2):223–236

    Article  Google Scholar 

  • Dragos J, Wu C (2014) Single-degree-of-freedom approach to incorporate axial load effects on pressure impulse curves for steel columns. J Eng Mech 141:04014098

    Article  Google Scholar 

  • Dutta SC, Roy R (2012) Performance of seismically designed buildings under blast loading. Iran J Sci Technol Trans Civ Eng 36(C2):149–166

    Google Scholar 

  • Eurocode 3 (2003) Design of steel structures. Part 1-8: design of joints, prEN1993-1-8 (CEN)

  • Gantes CJ, Pnevmatikos NG (2004) Elastic–plastic response spectra for exponential blast loading. Int J Impact Eng 30:323–343

    Article  Google Scholar 

  • Hadianfard MA, Razani R (2003) Effects of semi-rigid behavior of connections in the reliability of steel frames. J Struct Saf 25:123–138

    Article  Google Scholar 

  • Hadianfard MA, Farahani A, B-Jahromi A (2012) On the effect of steel columns cross sectional properties on the behaviours when subjected to blast loading. J Struct Eng Mech 44(4):449–463

    Article  Google Scholar 

  • Izadifard RA, Maheri MR (2011) Ductility effects on the behavior of steel structures under blast loading. Iran J Sci Technol Trans B Eng 34(B1):49–62

    Google Scholar 

  • Kartal ME, Basaga HB, Muvafik M (2010) Effects of semi-rigid connection on structural responses. Electron J Struct Eng 10:22–35

    Google Scholar 

  • Lee L, Kim T, Kim J (2009) Local response of W-shaped steel columns under blast loading. J Struct Eng Mech 31(1):25–38

    Article  Google Scholar 

  • Mageirou GE, Gantes CJ (2006) Buckling strength of multi-story sway, non-sway and partially-sway frames with semi-rigid connections. J Constr Steel Res 62:893–905

    Article  Google Scholar 

  • Nassr AA, Razaqpur AG, Tait MJ, Campidelli M, Foo S (2012) Single and multi-degree of freedom analysis of steel beams under blast loading. J Nucl Eng Des 242:63–77

    Article  Google Scholar 

  • Nassr AA, Razaqpur AG, Tait MJ, Campidelli M, Foo S (2013) Strength and stability of steel beam columns under blast load. Int J Impact Eng 55:34–48

    Article  Google Scholar 

  • Nassr AA, Razaqpur AG, Tait MJ, Campidelli M, Foo S (2014) Dynamic response of steel columns subjected to blast loading. J Struct Eng ASCE 140(7):04014036

    Article  Google Scholar 

  • Nemati A, Hadianfard MA, Johari A (2016) Investigation of steel column behavior with different cross sections under blast loading. Modares Civ Eng J 16:265–278

    Google Scholar 

  • Nourzadeh D, Humar J, Braimah A (2017) Response of roof beams in buildings subject to blast loading: analytical treatment. Eng Struct 138:50–62

    Article  Google Scholar 

  • Shi Y, Stewart MG (2015) Spatial reliability analysis of explosive blast load damage to reinforced concrete columns. Struct Saf 53:13–25

    Article  Google Scholar 

  • Shi Y, Hao H, Li Z-X (2008) Numerical derivation of pressure–impulse diagrams for prediction of RC column damage to blast loads. Int J Impact Eng 35:1213–1227

    Article  Google Scholar 

  • Shop RL (2006) Response of wide flange steel columns subjected to constant axial load and lateral blast load. Ph.D. dissertation, Virginia Polytechnic Institute

  • Stoddart EP, Byfield MP, Tyas A (2013) Blast modeling of steel frames with simple connections. J Struct Eng ASCE 140(1):04013027

    Article  Google Scholar 

  • UFC (US Department of Defense) (2008) Structures to resist the effects of accidental explosions. UFC 3-340-02, Washington, DC (USDOD)

  • Yokoyama T (2011) Verification and expansion of single-degree-of freedom transformation factors for beams using a multi-degree-of freedom nonlinear numerical analysis method. California Polytechnic State University, California

    Google Scholar 

Download references

Acknowledgements

The authors wish to thank Mr. Behtash Javid Sharifi from Shiraz University of Technology for reviewing the manuscript and his valuable comments.

Author information

Authors and Affiliations

  1. Department of Civil and Environmental Engineering, Shiraz University of Technology, P.O. Box 71555-313, Shiraz, Iran

    Mohammad Ali Hadianfard & Mahsa Shekari

Authors
  1. Mohammad Ali Hadianfard
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mahsa Shekari
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Mohammad Ali Hadianfard.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hadianfard, M.A., Shekari, M. An Equivalent Single-Degree-of-Freedom System to Estimate Nonlinear Response of Semi-fixed Flexural Members Under Impact Load. Iran J Sci Technol Trans Civ Eng 43 (Suppl 1), 343–355 (2019). https://doi.org/10.1007/s40996-018-0169-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s40996-018-0169-1

Keywords

Search

Navigation