Advertisement

Asian Journal of Civil Engineering

, Volume 19, Issue 5, pp 571–581 | Cite as

Inelastic seismic response of torsionally unbalanced structures with soft first story

  • Mansour Ouazir
  • Amar Kassoul
  • Abderrahmane Ouazir
  • Belkacem Achour
Original Paper
  • 24 Downloads

Abstract

The objective of this paper is to investigate the influence of the coupling of torsional and soft-first-story effects to the seismic behavior of reinforced concrete frame buildings. For this purpose, several structural models, considering the variation of structural stiffness in the plane of each story and over the height of the structure, were generated. The effect of masonry infills non-uniformly distributed in plan was also examined. Each model was subjected to six strong ground motions acting, simultaneously, in two orthogonal directions. Inelastic dynamic analysis was performed. Results from 708 cases were exanimated, and useful conclusions concerning the inelastic response are derived.

Keywords

Soft story Weak story Irregular building Torsional coupling Nonlinear dynamic analysis 

References

  1. Brodsky, A., & Yankelevsky, D. Z. (2017). Resistance of reinforced concrete frames with masonry infill walls to in-plane gravity loading due to loss of a supporting column. Engineering Structures, 140, 134–150.  https://doi.org/10.1016/j.engstruct.2017.02.061.CrossRefGoogle Scholar
  2. De Stefano, M., & Pintucchi, B. (2008). A review of research on seismic behavior of irregular building structures since 2002. Bulletin of Earthquake Engineering, 6(2), 285–308.CrossRefGoogle Scholar
  3. Dyaa, A. F. C., & Oretaa, A. W. C. (2015). Seismic vulnerability assessment of soft story irregular buildings using pushover analysis. Procedia Engineering, 125, 925–932.CrossRefGoogle Scholar
  4. Erdem, T. R. (2016). Performance evaluation of reinforced concrete buildings with softer ground floors. Građevinar, 68(1), 39–49.Google Scholar
  5. Eurocode 8. (1998). Design of structures for earthquake resistance part 1: General rules, seismic actions and rules for buildings (ENV 1998-I-I). Berlin: CEN.Google Scholar
  6. Goh, K. S., & Pan, T. C. (2015). Torsional response of nonductile structures with soft-first-story. Earthquake Engineering Structural Dynamics, 44(1), 1–21.CrossRefGoogle Scholar
  7. Kirac, N., Dogan, M., & Ozbasaran, H. (2011). Failure of weak-story during earthquakes. Engineering Failure Analysis, 18, 572–581.CrossRefGoogle Scholar
  8. Lavan, O., & De Stefano, M. (2016). Seismic behavior and design of irregular and complex structures. Geotechnical, geological and earthquake engineering. Dordrecht: Springer.Google Scholar
  9. Lee, H. S., & Hwang, K. R. (2015). Torsion design implications from shake-table responses of an RC low-rise building model having irregularities at the ground story. Earthquake Engineering Structural Dynamics, 44(6), 907–927.CrossRefGoogle Scholar
  10. Mander, J. B., Priestley, M. J. N., & Park, R. (1988). Theoretical stress–strain model for confined concrete. Journal of Structural Engineering (ASCE), 114, 1804–1826.CrossRefGoogle Scholar
  11. Sahoo, D. R., & Rai, D. C. (2013). Design and evaluation of seismic strengthening techniques for reinforced concrete frames with soft ground story. Engineering Structures, 56, 1933–1944.CrossRefGoogle Scholar
  12. Seismosoft. (2014). SeismoStruct v7.0a computer program for static and dynamic nonlinear analysis of framed structures. Available from http://www.seismosoft.com. Accessed 30 Aug 2014.
  13. Sinkovič, K., Peruš, I., & Fajfar, P. (2016). Seismic assessment of RC frame buildings. In Z. Zembaty & M. De Stefano (Eds.), Seismic behaviour and design of irregular and complex civil structures II. Geotechnical, geological and earthquake engineering (Vol. 40). Cham: Springer.  https://doi.org/10.1007/978-3-319-14246-3_8.Google Scholar
  14. Teresa Guevara-Perez, L. (2012). Soft story and weak story in earthquake resistant design: a multidisciplinary approach. In Proceedings of the 15th world conference on earthquake engineering, Lisbon, Portugal.Google Scholar
  15. Tomomi, S., Yoshiaki, N., Polat, G., Ho, C., Yasushi, S., Kazuto, M., et al. (2017). Experimental evaluation of the in-plane behavior of masonry wall infilled RC frames. Bulletin of Earthquake Engineering.  https://doi.org/10.1007/s10518-017-0139-1.Google Scholar
  16. Tsai, K. C., & Weng, Y. (2001). Computing story drift demands for RC building structures during the 1999 Chi-Chi Taiwan earthquake. The third U.S.Japan workshop on performance-based earthquake engineering methodology for reinforced concrete building structures, Seattle, Washington.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Civil Engineering, Faculty of Civil Engineering and ArchitectureHassiba Benbouali UniversityChlefAlgeria
  2. 2.Department of Civil Engineering, College of EngineeringUniversity of HailHailSaudi Arabia

Personalised recommendations