Wind and Structures

  • 제7권2호
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  • Pages.89-106
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  • 2004
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Effects of viscoelastic memory on the buffeting response of tall buildings

  • Palmeri, A. (Dipartimento di Costruzioni e Tecnologie Avanzate, University of Messina) ;
  • Ricciardelli, F. (Dipartimento di Meccanica e dei Materiali, University of Reggio Calabria) ;
  • Muscolino, G. (Dipartimento di Costruzioni e Tecnologie Avanzate, University of Messina) ;
  • De Luca, A. (Dipartimento di Analisi e Progettazione Strutturale, University of Naples "Federico II")
  • 투고 : 2003.03.05
  • 심사 : 2003.11.28
  • 발행 : 2004.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

The response of tall buildings to gust buffeting is usually evaluated assuming that the structural damping is of a viscous nature. In addition, when dampers are incorporated in the design to mitigate the response, their effect is allowed for increasing the building modal damping ratios by a quantity corresponding to the additional energy dissipation arising from the presence of the devices. Even though straightforward, this procedure has some degree of inaccuracy due to the existence of a memory effect, associated with the damping mechanism, which is neglected by a viscous model. In this paper a more realistic viscoelastic model is used to evaluate the response to gust buffeting of tall buildings provided with energy dissipation devices. Both cases of viscous and hysteretic inherent damping are considered, while for the dampers a generic viscoelastic behaviour is assumed. The Laguerre Polynomial Approximation is used to write the equations of motion and find the frequency response functions. The procedure is applied to a 25-story building to quantify the memory effects, and the inaccuracy arising when the latter is neglected.

키워드

참고문헌

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  3. Random Vibration of Systems with Viscoelastic Memory vol.130, pp.9, 2004, https://doi.org/10.1061/(ASCE)0733-9399(2004)130:9(1052)
  4. Correlation coefficients for structures with viscoelastic dampers vol.28, pp.8, 2006, https://doi.org/10.1016/j.engstruct.2005.12.015
  5. A Galerkin-type state-space approach for transverse vibrations of slender double-beam systems with viscoelastic inner layer vol.330, pp.26, 2011, https://doi.org/10.1016/j.jsv.2011.07.037
  6. Eliminating the modal truncation problem encountered in frequency responses of viscoelastic systems vol.333, pp.4, 2014, https://doi.org/10.1016/j.jsv.2013.10.018
  7. A numerical method for the time-domain dynamic analysis of buildings equipped with viscoelastic dampers vol.18, pp.5, 2011, https://doi.org/10.1002/stc.388
  8. Response of beams resting on viscoelastically damped foundation to moving oscillators vol.44, pp.5, 2007, https://doi.org/10.1016/j.ijsolstr.2006.06.013
  9. Generalized mode acceleration and modal truncation augmentation methods for the harmonic response analysis of nonviscously damped systems vol.52-53, 2015, https://doi.org/10.1016/j.ymssp.2014.07.003
  10. Time-domain response of linear hysteretic systems to deterministic and random excitations vol.34, pp.9, 2005, https://doi.org/10.1002/eqe.471
  11. Transverse Vibrations of Viscoelastic Sandwich Beams via Galerkin-Based State-Space Approach vol.142, pp.7, 2016, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001069
  12. Life-cycle-cost optimization for the wind load design of tall buildings equipped with TMDs vol.30, pp.4, 2004, https://doi.org/10.12989/was.2020.30.4.379