Earthquakes and Structures

  • 제28권2호
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  • Pages.173-185
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  • 2025
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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Seismic evaluation of set-back RC frames with and without masonry infill walls

  • Meisam Vahed (Department of Civil Engineering, University of Kurdistan) ;
  • Alireza Habibi (Department of Civil Engineering, Shahed University)
  • 투고 : 2024.08.25
  • 심사 : 2024.12.24
  • 발행 : 2025.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper examines the impact of masonry infill walls on the seismic performance of reinforced concrete frames with setbacks in elevation. Several setback Reinforced Concrete Moment Resisting Frames (RCMRFs), both with and without Masonry Infill Walls (MIWs), are designed and subjected to nonlinear dynamic analysis. The nonlinear responses of the structures are assessed using acceptance criteria. Including masonry walls in the frame modeling for this research reduced the maximum drift by 40%, the maximum plastic rotation of columns by 55%, and the maximum plastic rotation of beams by 37%. These results indicate that masonry walls can significantly enhance the seismic performance of the setback concrete frames, as well as concrete beams and columns. In some of the studied irregular frames, the maximum drift values at the Life Safety (LS) level exceed the limit of 2% when the effects of infill walls are not considered. However, these values fall within the allowable range when the effects of the infill walls are included. Additionally, the plastic rotations of certain columns in irregular frames without masonry infill walls surpass the LS allowable limit of 0.016 radians. By accounting for the effects of the infill walls, these rotations are reduced to acceptable levels in nearly all columns. Furthermore, the results show that in the upper-story beams of most irregular frames, the plastic rotation values exceed the allowable limits, even when the effects of infill walls are considered. Consequently, the local life safety performance criteria for these beams are not met.

키워드

참고문헌

  1. Favvata, M.J., Naoum, M.C. and Karayannis, C.G. (2013), "Limit states of RC structures with first floor irregularities", Struct. Eng. Mech., 47(6), 791-818. http://doi.org/10.12989/sem.2013.47.6.791.
  2. FEMA 356 (2000), Prestandard and Commentary for the Seismic Rehabilitation of Buildings, Federal Emergency Management Agency, Washington, D.C., USA
  3. Furtado, A., Ramos, T., Rodrigues, H., Arêde, A., Varum, H. and Tavares, P. (2015), "In-plane response of masonry infill walls: experimental study using digital image correlation", Procedia Eng., 114, 870-876. http://doi.org/10.1016/j.proeng.2015.08.042.
  4. Furtado, A., Rodrigues, H., Arêde, A. and Varum, H. (2015), "Experimental characterization of the in-plane and out-of-plane behaviour of infill masonry walls", Procedia Eng., 114, 862-869. http://doi.org/10.1016/j.proeng.2015.08.041.
  5. Furtado, A., Rodrigues, H., Arêde, A. and Varum, H. (2015), "Influence of the in plane and out-of-plane masonry infill walls' interaction in the structural response of RC buildings", Procedia Eng., 114, 722-729. http://doi.org/10.1016/j.proeng.2015.08.016.
  6. Furtado, A., Rodrigues, H., Arêde, A. and Varum, H. (2016), "Experimental evaluation of out-of-plane capacity of masonry infill walls", Eng. Struct., 111, 48-63. http://doi.org/10.1016/j.engstruct.2015.12.013.
  7. Furtado, A., Rodrigues, H., Arêde, A. and Varum, H. (2017), "Modal identification of infill masonry walls with different characteristics", Eng. Struct., 145, 118-134. http://doi.org/10.1016/j.engstruct.2017.05.003.
  8. Georgoussis, G.K. (2011), "Simplified dynamic analysis of eccentric buildings with a setback. 1: The effect of mass irregularity", Struct. Des. Tall Spec. Build., 20(8), 911-927. http://doi.org/10.1002/tal.567.
  9. Habibi, A., Vahed, M. and Asadi, K. (2018), "Evaluation of seismic performance of RC setback frames", Struct. Eng. Mech., 66(5), 609-619. https://doi.org/10.12989/sem.2018.66.5.609.
  10. Habibi, A.R. and Asadi, K. (2014), "Seismic performance of reinforced concrete moment resisting frames with setback based on Iranian seismic code", Int. J. Civil Eng., 12(1), 41-54. http://doi.org/10.22075/JRCE.2013.13.
  11. Humar, J.L. and Wright, W. (1977), "Earthquake response of steel-framed multistory buildings with setbacks", Earthq. Eng. Struct. Dyn., 5(1), 15-39. https://doi.org/10.1002/eqe.4290050103.
  12. Karayannis, C.G., Favvata, M.J. and Kakaletsis, D.J. (2011), "Seismic behaviour of infilled and pilotis RC frame structures with beam-column joint degradation effect", Eng. Struct., 33(10), 2821-2831. https://doi.org/10.1016/j.engstruct.2011.06.006.
  13. Kose, M.M. (2009), "Parameters affecting the fundamental period of RC buildings with infill walls", Eng. Struct., 31(1), 93-102. https://doi.org/10.1016/j.engstruct.2008.07.017.
  14. Kostinakis, K. and Athanatopoulou, A. (2020), "Effects of in-plan irregularities caused by masonry infills on the seismic behavior of R/C buildings", Soil Dyn. Earthq. Eng., 129, 105598. https://doi.org/10.1016/j.soildyn.2019.03.012.
  15. Pacific Earthquake Engineering Research Center (PEER), Strong Ground Motion Database; Pacific Earthquake Engineering Research Centre (PEER), University of California, Berkeley, CA, USA. http://peer.berkeley.edu
  16. Pujol, S. and Fick, D. (2010), "The test of a full-scale three-story RC structure with masonry infill walls", Eng. Struct., 32(10), 3112-3121. https://doi.org/10.1016/j.engstruct.2010.05.030.
  17. Vahed, M. (2017), "Evaluation of seismic performance of reinforced concrete moment resisting frames irregular in elevation designed based on Iranian seismic code (Fourth Edition)", M.Sc. Dissertation, University of Kurdistan, Kurdistan, Iran.
  18. Yacin, I.M., Muthu Kumar, S. and Satyanarayanan, K.S. (2024), "A review of performance evaluation of RC-infilled frames under earthquake scenarios", Multiscale Multidiscip. Model. Exp. Des., 7(2), 583-606. https://doi.org/10.1007/s41939-023-00288-0.