DOI QR코드

DOI QR Code

Evaluation of a new proposed seismic isolator for low rise masonry structures

  • Kakolvand, Habibollah (Department of Civil Engineering, College of Engineering, West Tehran Branch, Islamic Azad University) ;
  • Ghazi, Mohammad (Department of Civil Engineering, College of Engineering, West Tehran Branch, Islamic Azad University) ;
  • Mehrparvar, Behnam (Department of Civil Engineering, College of Engineering, West Tehran Branch, Islamic Azad University) ;
  • Parvizi, Soroush (Department of Materials Engineering, Shahid Rajaee Teacher Training University (SRTTU))
  • 투고 : 2019.08.19
  • 심사 : 2020.11.21
  • 발행 : 2021.02.25

초록

Low rise masonry structures are relatively inexpensive and easier to construct compared to other types of structures such as steel and reinforced concrete buildings. However, masonry structures are relatively heavier and less ductile and more vulnerable to damages in earthquakes. In this research, a new innovative low-cost seismic isolator using steel rings (SISR) is employed to reduce the seismic vulnerability of masonry structures. FEA of a masonry structure, made of concrete blocks is used to evaluate the effect of the proposed SISR on the seismic response of the structure. Two systems, fixed base and isolated from the base with the proposed SISRs, are considered. Micro-element approach and ABAQUS software are used for structural modeling. The nonlinear structural parameters of the SISRs, extracted from a recent experimental study by the authors, are used in numerical modeling. The masonry structure is studied in two separate modes, fixed base and isolated base with the proposed SISRs, under Erzincan and Imperial Valley-06 earthquakes. The accelerated response at the roof level, as well as the deformation in the masonry walls, are the parameters to assess the effect of the proposed SISRs. The results show a highly improved performance of the masonry structure with the SISRs.

키워드

참고문헌

  1. Abdel-Hafez, L.M., Abouelezz, A.E.Y. and Elzefeary, F.F. (2015), "Behavior of masonry strengthened infilled reinforced concrete frames under in-plane load", HBRC J., 11(2), 213-223. https://doi.org/10.1016/j.hbrcj.2014.06.005.
  2. Ahmad, S., Ghani, F. and Raghib Adil, M. (2009), "Seismic friction base isolation performance using demolished waste in masonry housing", Constr. Build. Mater., 23(1), 146-152. https://doi.org/10.1016/j.conbuildmat.2008.01.012.
  3. Artar, M., Coban, K., Yurdakul, M., Canb, O., Yilmaz, F. and Yildiz, M. (2019), "Investigation on seismic isolation retrofit of a historical masonry structure", Earthq. Struct., 16(4), 501-512. https://doi.org/10.12989/eas.2019.16.4.501.
  4. ASCE 7-16 (2016), Building Code Minimum Design Loads and Associated Criteria for Buildings and Other Structures, American Society of Civil Engineers, ASCE, Reston, Virginia, USA.
  5. Aykac, B., Kalkan, I. and Bocek, M. (2016), "The out-of-plane bending behavior of brick infill walls strengthened with perforated steel plates", Ingenieria, Investigacion y Tecnologia, 17(4), 429-435. http://dx.doi.org/10.1016/j.riit.2016.11.002.
  6. Cardoso, R., Lopes, M. and Bento, R. (2005), "Seismic evaluation of old masonry buildings. Part I: Method description and application to a case-study", Eng. Struct., 27(14), 2024-2035. https://doi.org/10.1016/j.engstruct.2005.06.012.
  7. Dumova-Jovanoska, E. and Churilov, S. (2009), "Calibration of a numerical model for masonry with application to experimental results", Proceedings of the First International Conference PROHITECH 09, Rome, Italy, June.
  8. Galano, L. and Gusella, V. (1998), "Reinforcement of masonry walls subjected to seismic loading using steel x-bracing", J. Struct. Eng/, 124(8), 886-895. https://doi:10.1061/(ASCE)0733-9445(1998)124:8(886).
  9. Gambarotta, L. and Lagomarsino, S. (1997), "Damage models for the seismic response of brick masonry shear walls. Part I: The mortar joint model and its applications", Earthq. Eng. Struct. Dyn., 26(4), 423-439. https://doi.org/10.1002/(SICI)1096-9845(199704)26:4<423::AID-EQE650>3.0.CO;2-%23.
  10. Habieb, A.B., Milani, G., Tavio, T. and Milani, F. (2017), "Numerical model of low cost rubber isolators for masonry housing in high seismic regions", Int. J. Civil Environ. Eng., 11(5), 664-670. https://doi.org/10.5281/zenodo.1130579.
  11. Kakolvand, H., Ghazi, M., Mehrparvar, B. and Parvizi, S. (2020), "Experimental and numerical study of a new proposed seismic isolator using steel rings (SISR)", J. Earthq. Eng., 1-30. https://doi.org/10.1080/13632469.2020.1822227.
  12. Lourenco P.B. (1994), "Analysis of masonry structures with interface elements", Research Report No. 03-21-22-0-01; TNO Building and Construction Research, Computational Mechanics, Delft University of Technology, Faculty of Civil Engineering.
  13. Mozaheb, S.A. and Behnamfar, F. (2017), "A new elastomericsliding seismic isolation system", J. Vibroeng., 20(2), 1063-1074. https://doi.org/10.21595/jve.2017.18455.
  14. Pauletta, M., Di Luca, D., Russo, E. and Fumo, C. (2018), "Seismic rehabilitation of cultural heritage masonry buildings with unbonded fiber reinforced elastomeric isolators (U-FREIs) -A case of study", J. Cultural Heritage, 32, 84-97. https://doi.org/10.1016/j.culher.2017.09.015.
  15. Pela, L., Aprile, A. and Benedetti, A. (2009), "Seismic assessment of masonry arch bridges", Eng. Struct., 31(8), 1777-1788. https://doi.org/10.1016/j.engstruct.2009.02.012.
  16. Ramos, L.F. and Lourenco, P.B. (2004), "Modeling and vulnerability of historical city centers in seismic areas: A case study in Lisbon", Eng. Struct., 26(9), 1295-1310. https://doi.org/10.1016/j.engstruct.2004.04.008.
  17. Schneider, S. and Favieri, S. (1996), "Lateral strength of brick cladded steel frames", Proceedings of the 11th World Conference on Earthquake Engineering, Acapulco, Mexico, June.
  18. Thuyet, V.N., Deb, S.K. and Dutta, A. (2017), "Mitigation of seismic vulnerability of prototype low-rise masonry building using U-FREIs", J. Perform. Constr. Facil., 32(2), 04017136. https://doi.org/10.1061/(ASCE)CF.1943-5509.0001136.
  19. Tiberti, S., Acito, M. and Milani, G. (2016), "Comprehensive FE numerical insight into Finale Emilia Castle behavior under 2012 Emilia Romagna seismic sequence: Damage causes and seismic vulnerability mitigation hypothesis", Eng. Struct., 117, 397-421. https://doi.org/10.1016/j.engstruct.2016.02.048.