Earthquakes and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Seismic force reduction factor for steel moment resisting frames with supplemental viscous dampers

  • Serror, M. Hassanien (Department of Structural Engineering, Cairo University) ;
  • Diab, R. Adel (Department of Structural Engineering, Cairo University) ;
  • Mourad, S. Ahmed (Department of Structural Engineering, Cairo University)
  • Received : 2014.04.21
  • Accepted : 2014.08.27
  • Published : 2014.12.25
⟨ Previous Next ⟩

Abstract

Damping is one of the parameters that control the performance of structures when they are subjected to seismic, wind, blast or other transient shock and vibration disturbances. By adding supplemental viscous dampers, the energy input from a transient deformation is absorbed, not only by the structure itself, but also by the supplemental dampers. The aim of this study is to evaluate the values of both damping and ductility reduction factors for steel moment resisting frames with supplemental linear viscous dampers. Two-dimensional finite element models have been established for a range of low to mid rise buildings with different parameters: number of floors; number of bays; and number of dampers with different supplemental damping ratios (from 5% to 30%). A parametric study has been performed using time history analyses and a well-documented research method (N2-method). In addition, an equation has been proposed for each reduction factor based on regression analysis for the obtained results. The results of the Time history analyses are compared with those of a modified N2-method. Moreover, a comparison with values specified in the European code EC8 and the Egyptian code ECP-201 has been performed.

Keywords

References

  1. Ashour, S.A. (1987), "Elastic seismic response of buildings with supplemental damping", PhD Dissertation, Dept. of Civil Eng., University of Michigan
  2. Basu, B., Bursi, O.S., Casciati, F., Casciati, S., Del Grosso, A.E., Domaneschi, M., Faravelli, L., Holnicki-Szulc, J., Irschik, H., Krommer, M., Lepidi, M., Martelli, A., Ozturk, B., Pozo, F., Pujol, G., Rakicevic, Z. and Rodellar, J. (2014), "A European Association for the Control of Structures joint perspective. Recent studies in civil structural control across Europe", Struct. Control Health Monit., doi: 10.1002/stc.1652.
  3. Borzi, B. and Elnashai, A.S. (2000), "Refined force reduction factors for seismic design", Eng. Struct., 22, 1244-1260 https://doi.org/10.1016/S0141-0296(99)00075-9
  4. Cimellaro, G.P. and Retamales, R. (2007), "Optimal softening and damping design for buildings", Struct. Health Monit., 14, 831-857 https://doi.org/10.1002/stc.181
  5. Fajfar, P. and Fischinger, M. (1989), "N2 - A nonlinear seismic analysis of regular buildings", Proceeding of the 9th World Conference on Earthq. Eng., Tokyo, 111-116.
  6. FEMA-273 (1997), "NEHRP guidelines for the seismic rehabilitation of buildings", Federal Emergency Management Agency: Washington, DC.
  7. FEMA-356 (1997), "NEHRP prestandard and commentary for the seismic rehabilitation of buildings", Federal Emergency Management Agency: Washington, DC.
  8. Gluck, N., Reinhorn, A.M., Gluck, J. and Levy, R. (1996), "Design of supplemental dampers for control of structures", J. Struct. Eng. (ASCE), 122, 1394-1399. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:12(1394)
  9. Hatzigeorgiou, G.D. (2010), "Damping modification factors for SDOF systems subjected to near-fault, farfault and artificial earthquakes", Earthq. Eng. Struct. Dyn., 39, 1239-1258. https://doi.org/10.1002/eqe.991
  10. Hwang, J.S., Huang, Y.N., Yi, S.L. and Ho, S.Y. (2008), "Design formulations for supplemental viscous dampers to building structures", J. Struct. Eng. (ASCE), 134, 22-31. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:1(22)
  11. Landi, L., Fabbri, O. and Diotallevi, P.P. (2014a), "A two-step direct method for estimating the seismic response of nonlinear structures equipped with nonlinear viscous dampers", Earthq. Eng. Struct. Dyn., doi: 10.1002/eqe.2415.
  12. Landi, L., Lucchi, S. and Diotallevi, P.P. (2014b), "A procedure for the direct determination of the required supplemental damping for the seismic retrofit with viscous dampers", Eng. Struct., 71, 137-149 https://doi.org/10.1016/j.engstruct.2014.04.025
  13. Lin, Y.Y., Miranda, E. and Chang, K.C. (2005), "Evaluation of damping reduction factors for estimating elastic response of structures with high damping", Earthq. Eng. Struct. Dyn., 34, 1427-1443. https://doi.org/10.1002/eqe.499
  14. McNamara, R.J., Taylor, D.P. and Duflot, P. (2000), "Fluid viscous dampers to reduce wind-induced vibrations in tall buildings," North Tonawanda, New York.
  15. Newmark, N.M. and Hall, W.J. (1982), "Earthquake spectra and design", Earthquake Eng. Instit. Monograph Series, 3, 103.
  16. Occhiuzzi, A. (2009), "Additional viscous dampers for civil structures: Analysis of design methods based on effective evaluation of modal damping ratios", J. Struct. Eng. (ASCE), 31, 1093-1101. https://doi.org/10.1016/j.engstruct.2009.01.006
  17. Palermo, M., Silvestri, S., Trombetti, T., Landi, L. (2013), "Force reduction factor for building structures equipped with added viscous dampers", Bull. Earthq. Eng., 11, 1661-1681. https://doi.org/10.1007/s10518-013-9458-z
  18. Park, Y.J., Ang, A.H.S. (1985) "Mechanistic seismic damage model for reinforced concrete", J. Struct. Eng. (ASCE), 111, 722-739. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(722)
  19. Parulekar, Y.M., Reddy, G.R., Vaze, K.K., Guha, S., Gupta, C., Muthumani, K. and Sreekala, R. (2012), "Seismic response attenuation of structures using shape memory alloy dampers", Struct. Control Health Monit., 19, 102-119. https://doi.org/10.1002/stc.428
  20. Rama, R.K., Ansu, M. and Iyer, N.R. (2014), "A methodology of design for seismic performance enhancement of buildings using viscous fluid dampers", Struct. Control Health Monit., 21, 342-355. https://doi.org/10.1002/stc.1568
  21. Ramirez, O.M., Constantinou M.C., Kircher C.A., Whittaker A.S., Johnson M.W., Gomez J.D. and Chrysostomou C.Z. (2000), Development and Evaluation of Simplified Procedures for Analysis and Design of Buildings with Passive Energy Dissipation Systems, Report No. MCEER-00-0010, Multidisciplinary Center for Earthquake Engineering Research (MCEER), University of New York at Buffalo.
  22. Ramirez, O.M., Constantinou, M.C., Whittaker, A.S., Kircher, C.A. and Chrysostomou, C.Z. (2002), "Elastic and inelastic seismic response of buildings with damping systems", Earthq. Spectra, 18, 531-547. https://doi.org/10.1193/1.1509762
  23. Ramy A.D. (2013), "Assessment of base shear reduction factor for steel moment resisting frames with fluid viscous dampers," M.Sc. Thesis, Str. Eng. Dept., Cairo University
  24. Iervolino, I., Galasso, C. and Cosenza, E. (2010), "REXEL: Computer aided record selection for code-based seismic structural analysis", Bull. Earthq. Eng., 8, 339-362. https://doi.org/10.1007/s10518-009-9146-1
  25. Sadek, F., Mohraz, B. and Riley, M. (2000), "Linear procedures for structures with velocity-dependent dampers", J. Struct. Eng. (ASCE), 126, 887-895. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:8(887)
  26. SAP2000, (2014), "Integrated software for structural analysis and design", CSI, Computers and Structures, Inc., http://www.csiamerica.com/sap2000, Berkeley, CA, U.S.A.
  27. Seleemah, A.A. and Constantinou, M.C. (1997), "Investigation of seismic response of buildings with linear and nonlinear fluid viscous dampers", Technical Report NCEER-97-0004, National Center for Earthquake Engineering Research, Buffalo, New York.
  28. Sophocleous, A.A. (2001), "Seismic control of regular and irregular buildings using viscoelastic passive dampers", J. Struct. Control, 8, 309-325. https://doi.org/10.1002/stc.4300080211
  29. Takewaki I. (1997), "Optimal damper placement for minimum transfer functions", Earthq. Eng. Struct. Dyn., 26, 1113-1124. https://doi.org/10.1002/(SICI)1096-9845(199711)26:11<1113::AID-EQE696>3.0.CO;2-X
  30. Takewaki I. (2000), "Optimal damper placement for critical excitation", Probab. Eng. Mech., 15, 317-325. https://doi.org/10.1016/S0266-8920(99)00033-8
  31. Takewaki, I. (2009), "Building control with passive dampers: Optimal performance-based design for earthquakes", Wiley.
  32. Taylor, D.P. and Constantinou, M.C. (2007), "Fluid dampers for applications of seismic energy dissipation and seismic isolation", North Tonawanda, NY 14120-0748.
  33. Uang, C.M. (1991), "Establishing R (or Rw) and Cd factors for building seismic provisions", J. Struct. Eng. (ASCE), 117, 19-28 https://doi.org/10.1061/(ASCE)0733-9445(1991)117:1(19)
  34. Uriz P. and Whittaker A.S. (2001), "Retrofit of pre-Northridge steel moment-resisting frames using fluid viscous dampers", Struct. Des. Tall Build., 10, 371-390. https://doi.org/10.1002/tal.199

Cited by

  1. Effect of Span Length on Behavior of MRF Accompanied with CBF and MBF Systems vol.171, 2017, https://doi.org/10.1016/j.proeng.2017.01.431
  2. Seismic retrofit of special truss moment frames using viscous dampers vol.123, 2016, https://doi.org/10.1016/j.jcsr.2016.04.027
  3. Strength or force reduction factors for steel buildings: MDOF vs SDOF systems vol.19, pp.4, 2017, https://doi.org/10.21595/jve.2016.17124
  4. Experimental study on seismic performances of steel framebent structures vol.10, pp.5, 2016, https://doi.org/10.12989/eas.2016.10.5.1111
  5. Energy Dissipation and Local, Story, and Global Ductility Reduction Factors in Steel Frames under Vibrations Produced by Earthquakes vol.2018, pp.1875-9203, 2018, https://doi.org/10.1155/2018/9713685
  6. Local, Story, and Global Ductility Evaluation for Complex 2D Steel Buildings: Pushover and Dynamic Analysis vol.9, pp.1, 2019, https://doi.org/10.3390/app9010200
  7. Controlling the lateral displacement of building with external lever by using of MR damper vol.13, pp.1, 2014, https://doi.org/10.12989/eas.2017.13.1.001
  8. Ductility demands and reduction factors for 3D steel structures with pinned and semi-rigid connections vol.16, pp.4, 2014, https://doi.org/10.12989/eas.2019.16.4.469
  9. DEM Simulations of Energy Dissipation in Sand under Static and Cyclic Loading vol.49, pp.1, 2021, https://doi.org/10.1520/jte20190829
  10. State-of-the-art review: Reduction factor of traditional steel moment resisting, braced or eccentrically braced systems vol.35, pp.None, 2014, https://doi.org/10.1016/j.istruc.2021.11.028