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Effect of supplemental damping on seismic response of base isolated frames under near & far field accelerations

  • Structural Engineering
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Abstract

The seismic isolation, as a passive control method of structures and an innovative approach in resistant seismic design, significantly reduces the response of structural systems induced by strong ground motions. The performance of these systems in Near Fault (NF) ground motions with large pulses is different from that of Far Fault (FF) ground motions. It is indicated that the effects of near field earthquake with large velocity pulses can bring the seismic isolation devices to critical working conditions. To overcome this problem, the application of viscous damper is represented as an approach to improve the performance of these systems in near field earthquakes. In the present paper, through modeling six base isolated structures, the seismic responses were studied under near field and far field earthquakes. Nonlinear time history analyses were performed, applying the finite element software of ABAQUS to study the influence of various values of supplemental damping (5% ∼ 40%) on the responses of base isolated structures. The results demonstrated that, generally, by increasing supplemental damping ratio under near field earthquakes, the base displacement decreases; however, the stories relative displacements and accelerations increase. It is observed that by increasing supplemental damping ratio under far field earthquakes, the base displacement and the stories relative displacements decreases; however, the stories accelerations increase. Based on the analyses, these variations proved to be more prevalent under near field earthquakes and taller structures.

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References

  • Bayraktar, A., Altunisik, A. C., Sevim, B., Kartel, M. E., Turker, T., and Bilici, Y. (2009). “Comparison of near and far fault ground motion effect on the nonlinear response of dam reservoir foundation system.” Nonln. Dyn., Vol. 58, No. 11, pp. 655–673.

    Article  MATH  Google Scholar 

  • Jangid, R. S. (2007). “Optimum lead rubber isolation bearing for nearfault motions.” Eng Struct., Vol. 29, No. 3, pp. 2503–2513.

    Article  Google Scholar 

  • Jangid, R. S. and Kelly, J. M. (2001). “Base isolation for near fault motions.” Earthq. Eng. Struct. Dyn., Vol. 30, No. 5, pp. 691–707.

    Article  Google Scholar 

  • Kalkan, E. and Kunnath Sashi K. (2006). “Effects of fling step and forward directivity on seismic response of buildings.” Earthquake Spectra, Vol. 22, No. 2, pp. 367–390.

    Article  Google Scholar 

  • Komodromos, P. (2008). “Simulation of the earthquake induced pounding of seismically isolated buildings.” Comput. Struct., Vol. 86, No. 8, pp. 618–626.

    Article  Google Scholar 

  • Matsagar, V. A. and Jangid, R. S. (2003). “Seismic response of base isolated structures during impact with adjacent structures.” Eng. Struct., Vol. 25, No. 5, pp. 1311–1323.

    Article  Google Scholar 

  • Naeim, F. and Kelly, J. M. (1999). Design of seismic isolated structures from theory to practice, John Wiley, California.

    Book  Google Scholar 

  • Polycarpou, P. C. and Komodromos, P. (2010). “Earthquake induced Fig. 8. Variation of Base to Peak Ground Accelerations versus Damping Ratio under NF and FF Accelerations: (a) NF Accelerations, (b) FF Accelerations poundings of a seismically isolated building with adjacent structures.” Engrg Struct., Vol. 32, No. 2, pp. 1937–1951.

    Article  Google Scholar 

  • Providakis, C. P. (2008). “Effect of LRB isolator and supplemental viscous damper on seismic isolated building under near-fault excitation.” Eng. Struct., Vol. 30, No. 7, pp. 1187–1198.

    Article  Google Scholar 

  • Providakis, C. P. (2009). “Effect of supplemental damping on LRB and FPS seismic isolator under near-fault ground motions.” Soil. Dyn. Earthq. Eng., Vol. 30, No. 5, pp. 1187–1198.

    Google Scholar 

  • Somerville, P. G. (2005), “Engineering characterization of near fault ground motions.” ZSEE Conference, Pasadena, CA.

    Google Scholar 

  • PEER Strong Motion Database, http://www.peer.berkeley.edu

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Authors and Affiliations

  1. Civil Engineering Dept., Razi University, Kermanshah, 67149-67346, Iran

    Mojtaba Fathi

  2. Structural Engineering, Razi University, Kermanshah, 67149-67346, Iran

    Akbar Makhdoumi & Mehdi Parvizi

Authors
  1. Mojtaba Fathi
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  2. Akbar Makhdoumi
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  3. Mehdi Parvizi
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Correspondence to Mojtaba Fathi.

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Fathi, M., Makhdoumi, A. & Parvizi, M. Effect of supplemental damping on seismic response of base isolated frames under near & far field accelerations. KSCE J Civ Eng 19, 1359–1365 (2015). https://doi.org/10.1007/s12205-014-0101-6

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  • DOI: https://doi.org/10.1007/s12205-014-0101-6

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