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Vibration Reduction of Eccentric Steel 3D Framed Building Considering Soil Flexibility

  • Karabi BharadwajEmail author
  • Bapi Mondal
  • Nirmalendu Debnath
Original Contribution
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Abstract

Seismic demand can be reduced by modifying the structural response of the system. Viscous dampers are an effective passive control device for reducing vibrations in building structures. The present study investigates the performance of linear viscous dampers in vibration control of multi-storey building structures under seismic excitation considering the effect of soil flexibility. Six-storey steel 3D framed buildings with three different building plans, namely symmetric, T and L shapes, are modeled using SAP 2000. Soil type I (hard) and type II (medium) are considered as per IS 1893:2002 to incorporate the effect of soil flexibility by using springs at supports for medium type soil and fixed supports for hard soil. The spring constants are obtained from Gazetas’ equations. To measure the control performance, inter-storey drift and maximum top displacement are considered as objective functions. Linear time history simulation is performed using white noise (ensuring wider frequency content) to quantify the objective functions. After performing the analysis and comparing with the uncontrolled case for both hard and medium soil, it is observed that maximum reduction in inter-storey drift and average top displacement can be obtained. Eccentric plans have larger uncontrolled values than the symmetric plans, thus additional design criteria to be followed when opting for eccentric plans. The study reveals that application of supplemental viscous dampers results in greater control of vibrations in such plans. Vibration control of viscous damper is comparatively better in hard soil than in medium type soil.

Keywords

Energy dissipating devices Supplemental viscous dampers Soil flexibility Plan eccentricity Mean inter-storey drift White noise 

Notes

Acknowledgement

The results presented here are based on the work performed at National Institute of Technology, Silchar. The authors are grateful for this support.

References

  1. 1.
    P. Agarwal, M. Shrikhande, Earthquake Resistant Design of Structures (Prentice Hall, Englewood Cliffs, 2006)Google Scholar
  2. 2.
    N. Ahir, G.I. Prajapati, Effect of Foundation Soil on Structural Economics of Earthquake Resistant Design of RC Building. Indian Society of Earthquake Technology, Department of Earthquake Engineering Building, IIT Roorkee, 2012Paper C007Google Scholar
  3. 3.
    ATC-40, Seismic Evaluation and Retrofit of Concrete Buildings, Vol. 1. (Redwood City, California, 1996)Google Scholar
  4. 4.
    Computers and Structures Inc., SAP2000—Integrated Software for Structural Analysis and Design. Berkeley, CaliforniaGoogle Scholar
  5. 5.
    A.K. Chopra, Dynamics of structures: theory and application to earthquake engineering (Prentice Hall, Englewood Cliffs, 2012)Google Scholar
  6. 6.
    M.C. Constantinou, M.D. Symans, D.P. Taylor. Fluid viscous damper for improving the earthquake resistance of buildings. in Proceedings of Symposium Structural Engineering Natural Hazards Mitigation, April 19, 1993–April 21, 1993, pp. 718–723 (1993)Google Scholar
  7. 7.
    M.C. Constantinou, M.D. Symans, Seismic response of structures with supplemental damping. Struct. Des. TALL Build. 2(January), 77–92 (1993)CrossRefGoogle Scholar
  8. 8.
    M. Dicleli, A. Mehta, Seismic performance of chevron braced steel frames with and without viscous fluid dampers as a function of ground motion and damper characteristics. J. Constr. Steel Res. 63, 1102–1115 (2007)CrossRefGoogle Scholar
  9. 9.
    FEMA 356, Prestandard and Commentary for the Seismic Rehabilitation of Buildings. (Washington, D.C., 2000)Google Scholar
  10. 10.
    FEMA 440, Improvement of Nonlinear Static Seismic Analysis Procedures. (Washington, D.C., 2005)Google Scholar
  11. 11.
    K.R. Goel, Passive control of earthquake-induced vibrations in asymmetric buildings. in 12th World Conference on Earthquake Engineering, pp. 0122Google Scholar
  12. 12.
    A. Hameed, A. Quazi, A.M. Rasool, Seismic performance of low to medium rise reinforced concrete buildings using Passive energy dissipation devices. Pak. J. Eng. Appl. Sci. 14, 1–16 (2014)Google Scholar
  13. 13.
    IS 1893 (part 1):2002, Criteria for Earthquake Resistant Design of Structures. (New Delhi)Google Scholar
  14. 14.
    IS 800:2007, General Construction in Steel—Code of Practice, Third Revision. (New Delhi)Google Scholar
  15. 15.
    International Building Code 2006 by International Code Council, IncGoogle Scholar
  16. 16.
    A.S. Kokil, M. Shrikhande, Optimal Placement of Supplemental Dampers in Seismic Design of Structures. JSEE: Fall. 9(3) (2007)Google Scholar
  17. 17.
    S.L. Kramer, Geotechnical Earthquake Engineering (Pearson, London, 2007)Google Scholar
  18. 18.
    R. Lewandowski, Optimization of the location and damping constants of viscous dampers. in Proceedings of the Ninth International Conference on Computational Structures Technology, Scotland 2008Google Scholar
  19. 19.
    C.A. Martínez, O. Curadelli, M.E. Compagnoni, Optimal design of passive viscous damping systems for buildings under seismic excitation. J. Constr. Steel Res. 90, 253–264 (2013)CrossRefGoogle Scholar
  20. 20.
    S.V. Mevada, R.S. Jangid, Seismic response of asymmetric systems with linear and non-linear viscous dampers. Int. J. Adv. Struct. Eng. 4, 5 (2012).  https://doi.org/10.1186/2008-6695-4-5 CrossRefGoogle Scholar
  21. 21.
    N. Subramanian (2008) Design of steel structures. Oxford University Press India, OxfordGoogle Scholar
  22. 22.
    D. Taylor, P. Duflot, Fluid viscous dampers used for seismic energy dissipation in structures. in Proceedings of the 12th European Conference on Earthquake Engineering (2002)Google Scholar
  23. 23.
    UFC 3-310-01 (2005, Including Change, 2007). ‘Structural Load Data', United Facilities Criteria, Department of Defense, USAGoogle Scholar

Copyright information

© The Institution of Engineers (India) 2019

Authors and Affiliations

  • Karabi Bharadwaj
    • 1
    Email author
  • Bapi Mondal
    • 2
  • Nirmalendu Debnath
    • 3
  1. 1.Department of Civil EngineeringTezpur UniversityNapaam, TezpurIndia
  2. 2.Department of Civil EngineeringIndian Institute of Technology, KharagpurKharagpurIndia
  3. 3.Department of Civil EngineeringNational Institute of Technology, SilcharSilcharIndia

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