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Behaviour of Triple Friction Pendulum isolator under forward directivity and fling step effect

  • Structural Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

The Triple Friction Pendulum (TFP) bearing consists of two facing concave steel surfaces separated by an internal nested assembly of two facing concave surfaces separated by an articulated slider. In spite of being fully passive device, TFP bearing exhibits adaptive behavior under different hazard level of earthquakes owing to multiple sliding surfaces. The paper describes response of TFP bearing under near-fault earthquake ground motions with directivity focusing and fling step and compared with far-field ground motions. A set of 18 records comprising of six far-field and twelve near-fault ground motion, six with directivity effect and six with fling step, are used for the study. Behavior of TFP bearing is studied by changing the radius of curvature and coefficient of friction of outer surfaces contributing significantly under near-fault event. Further, a parametric study of TFP isolated building is also carried out using simple sinusoidal pulse motions to achieve clear insight of the effects of forward directivity and fling step. It is observed that near-fault ground motion with forward directivity pulses result in higher demands than the fling step pulses due to the backward and forward momentum gained during the initial and final phase of the directivity pulse. Moreover, TFP bearing is found effective in reducing base shear, absolute acceleration and isolator displacement compared to friction base-isolation system with single sliding surface.

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References

  • Ahmadi, G. (2013). “Stochastic earthquake response of structure on sliding foundation.” International Journal of Engineering and Science, Vols. 21, No. 2, pp. 93–102, DOI: 10.1016/0020–7225(83) 90001–0.

    Article  MATH  Google Scholar 

  • Alavi, B. and Krawinkler, H. (2004). “Behaviour of moment resisting frame structures subjected to near-fault ground motions.” Earthquake Engineering Structure Dynamics, Vol. 33, pp. 687–706.

    Article  Google Scholar 

  • Becker, T. C. and Mahin, S. A. (2011). Advanced modelling of the performance of structures supported on triple friction pendulum bearings, PhD Thesis, University of California, Berkeley.

    Google Scholar 

  • Buckle, I. G. and Mayes, R. L. (1990). “Seismic isolation: History, application and performance-A world view.” Earthquake Spectra 1990, Vol. 6, No. 2, pp. 161–201, DOI: 10.1193/1.1585564.

    Article  Google Scholar 

  • Constantinou, M. C., Mokha, A. S., and Reinhorn, A. M. (1990), “Teflon bearings in base isolation II: Modeling.” Journal of Structural Engineering (ASCE) 1990, Vol. 116, No. 2, pp. 455–474, DOI: 10.1061/(asce)0733–9445(1990)116:2(455).

    Article  Google Scholar 

  • Fadi, F. and Constantinou, M. C. (2010). “Evaluation of simplified methods of analysis for structures with triple friction pendulum isolators.” Earthquake Engineering Structural Dynamics, Vol. 24, No. 1, pp. 5–22. DOI: 10.1002/eqe.930.

    Google Scholar 

  • Fenz, D. M. and Constantinou, M. C. (2008b). “Modelling triple friction pendulum bearings for response history analysis.” Earthquake Spectra, Vol. 24, No. 4, pp. 1011–1028, DOI: 10.1193/1.2982531.

    Article  Google Scholar 

  • Fenz, D. M. and Constantinou, M. C. (2006). “Behaviour of the double concave friction pendulum bearing.” Earthquake Engineering and Structural Dynamics, Vol. 35, No. 11, pp. 1403–1424, DOI: 10.1002/eqe.589.

    Article  Google Scholar 

  • Fenz, D. M. and Constantinou, M. C. (2008). “Spherical sliding isolation bearings with adaptive behavior: Theory.” Earthquake Engineering and Structural Dynamics, Vol. 37, No. 2, pp. 163–183, DOI: 10.1002/eqe.751.

    Article  Google Scholar 

  • Fenz, D. M. and Constantinou, M. C. (2008a). “Spherical sliding isolation bearings with adaptive behavior: Experimental verfication.” Earthquake Engineering and Structural Dynamics, Vol. 37, No.2, pp. 185–205, DOI: 10.1002/eqe.750.

    Article  Google Scholar 

  • Heaton, T. H., Hall, J. F., Wald, D. J., and Halling, M. W. (1995). “Response of high-rise and base-isolated buildings to a hypothetical Mw 7.0 blind thrust earthquake.” Science, Vol. 267, No. 5195, pp. 206–211, DOI: 10.1126/science.267.5195.206.

    Article  Google Scholar 

  • Kalkan, E. and Kunnath, S. K. (2006). “Effects of fling step and forward directivity on seismic response of buildings.” Earthquake Spectra, Vol. 22, No. 2, pp. 367–390, DOI: 10.1193/1.2192560.

    Article  Google Scholar 

  • Kalkan, E., Adalier, K., and Pamuk, A. (2004). “Near field effects and engineering implications of recent earthquakes in Turkey.” Proceedings, 5th International Conference on Case Histories in Geotechnical Engineering, New York, NY, pp. 3–30.

    Google Scholar 

  • Kim, Y. S. and Yun, C. B. (2005). “Analysis and design of double friction pendulum systems for seismic isolation,” The Second International Conference on Structural Health Monitoring of Intelligent Infrastructure, Korea.

    Google Scholar 

  • Malekzadeh, M. and Taghikhany, T. (2012). “Multi-Stage performance of seismically isolated bridge using triple pendulum bearing.” Advances in Structural Engineering, Vol. 15, No. 7, pp. 1181–1196, DOI: 10.1260/1369–4332.15.7.1181.

    Article  Google Scholar 

  • Naeim, F. and Kelly, J. M. (1999). Design of seismic isolated structures: From theory to practice, Wiley, New York.

    Book  Google Scholar 

  • Sarlis, A. S. and Constantinou, M. C. (2011). Modelling triple friction pendulum isolator in program SAP2000, MCEER Report, University of New York, Buffalo.

    Google Scholar 

  • Sasani, M. and Bertero, V. V. (2000). “Importance of severe pulse-type ground motions in performance-based engineering: Historical and critical review.” Proceedings, 12th World Conference on Earthquake Engineering, Paper No. 1302.

    Google Scholar 

  • Somerville, P. G. (1998). “Development of an improved representation of near-fault ground.” SMIP98 Proceedings, Seminar on Utilization of Strong-Motion Data, Oakland, CA, Sept. 15, California Division of Mines and Geology, Sacramento, CA, pp. 1–20.

    Google Scholar 

  • Soni, D. P., Mistry, B. B., Jangid, R. S., and Panchal, V. R. (2011). “Seismic response of the double variable frequency pendulum isolator.” Structural Control Health Monitoring, Vol. 18, No. 4, pp. 450–470, DOI: 10.1002/stc.384.

    Article  Google Scholar 

  • Tsai, C. S., Chen, W. S., Chiang, T. C., and Chen, B. J. (2006). “Component and shaking table tests for full-scale multiple friction pendulum system.” Earthquake Engineering and Structural Dynamics, Vol. 35, No. 10, pp. 1653–1675, DOI: 10.1002/eqe.598.

    Article  Google Scholar 

  • Warn, G. P. and Ryan, K. L. (2012). “A review of seismic isolation for buildings: Historical development and research needs.” Buildings, Vol. 2, No. 4, pp. 300–325, DOI: 10.3390/buildings2030300.

    Article  Google Scholar 

  • Wen, Y. K. (1976). “Method for random vibration of hysteretic systems.” Journal of Engineering Mechanics (ASCE), Vol. 102, pp. 249–263.

    Google Scholar 

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Authors and Affiliations

  1. School of Engineering, R.K. University, Rajkot, India

    Mazhar A. Dhankot

  2. Civil Engineering Dept., Marwadi Education Foundations Group of Institutions, Rajkot, 360005, India

    Mazhar A. Dhankot

  3. Civil Engineering Dept., Sardar Vallabhbhai Patel Institute of Technology, Vasad, India

    Devesh P. Soni

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  1. Mazhar A. Dhankot
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  2. Devesh P. Soni
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Correspondence to Devesh P. Soni.

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Dhankot, M.A., Soni, D.P. Behaviour of Triple Friction Pendulum isolator under forward directivity and fling step effect. KSCE J Civ Eng 21, 872–881 (2017). https://doi.org/10.1007/s12205-016-0690-3

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  • DOI: https://doi.org/10.1007/s12205-016-0690-3

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