Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems
Karavasilis, Theodore L. and Seo, Choung-Yeol. (2011) Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems. Engineering Structures, Vol.33 (No.8). pp. 2248-2258. ISSN 0141-0296
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Official URL: http://dx.doi.org/10.1016/j.engstruct.2011.04.001
This paper evaluates the seismic structural and non-structural performance of self-centering and conventional structural systems combined with supplemental viscous dampers. For this purpose, a parametric study on the seismic response of highly damped single-degree-of-freedom systems with self-centering flag-shaped or bilinear elastoplastic hysteresis is conducted. Statistical response results are used to evaluate and quantify the effects of supplemental viscous damping, strength ratio and period of vibration on seismic peak displacements, residual displacements and peak total accelerations. Among other findings, it is shown that decreasing the strength of nonlinear systems effectively decreases total accelerations, while added damping increases total accelerations and generally decreases residual displacements. Interestingly, this work shows that in some instances added damping may result in increased residual displacements of bilinear elastoplastic systems. Simple design cases demonstrate how these findings can be considered when designing highly damped structures to reduce structural and non-structural damage.
|Item Type:||Journal Article|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Divisions:||Faculty of Science > Engineering|
|Library of Congress Subject Headings (LCSH):||Earthquake resistant design, Seismic waves -- Damping, Buildings -- Earthquake effects|
|Journal or Publication Title:||Engineering Structures|
|Official Date:||August 2011|
|Number of Pages:||11|
|Page Range:||pp. 2248-2258|
|Access rights to Published version:||Restricted or Subscription Access|
 FEMA 445. Next-Generation Performance-based Seismic Design Guidelines. Federal Emergency Management Agency, Washington DC. 2006.
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