Aseismic smart building isolation systems under multi-level earthquake excitations: Part II, energy-dissipation and damage reduction
Min-Ho CHEY(),J. Geoffrey CHASE2,John B. MANDER3,Athol J. CARR4
1. School of Architecture & Civil Engineering, Keimyung University, Daegu 42601, Korea 2. Department of Mechanical Engineering, University of Canterbury, Christchurch 8140, New Zealand 3. Zachry Department of Civil Engineering, Texas A&M University, Texas 77843, USA 4. Department of Civil & Natural Resources Engineering, University of Canterbury, Christchurch 8140, New Zealand
Based on the performance results of the previously suggested smart building isolation systems (1st companion paper), this following study verifies the control effects of the systems from the view point of energy dissipation and damage level metrics. Several different model cases of the strategically isolated multi-story building structures utilizing passive dampers and semi-active resettable devices are analyzed and the energy-based target indices are compared. Performance comparisons are conducted on statistically calculated story/structural hysteretic energy and story/structural damage demands over realistic suites of earthquake ground motion records, representing seismic excitations of specific return period probability. Again, the semi-active solutions show significant promise for applications of resettable device, offering advantages over passive systems in the consistent damage reductions. The specific results of this study include the identification of differences in the mechanisms by which smart building isolation systems remove energy, based on the differences in the devices used. Less variability is also seen for the semi-active isolation systems, indicating an increased robustness.
. [J]. Frontiers of Structural and Civil Engineering, 2015, 9(3): 297-306.
Min-Ho CHEY,J. Geoffrey CHASE,John B. MANDER,Athol J. CARR. Aseismic smart building isolation systems under multi-level earthquake excitations: Part II, energy-dissipation and damage reduction. Front. Struct. Civ. Eng., 2015, 9(3): 297-306.
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