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Aseismic smart building isolation systems under multi-level earthquake excitations： Part II, energy-dissipation and damage reduction

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Frontiers of Structural and Civil Engineering 2015年第3期9卷 297-306页

作者： Min-Ho CHEY J. Geoffrey CHASE John B. MANDER Athol J. CARR School of Architecture & Civil Engineering Keimyung University Daegu 42601 Korea Department of Mechanical Engineering University of Canterbury Christchurch 8140 New Zealand Zachry Department of Civil Engineering Texas A&M University Texas 77843 USA 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 （lst 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 ofresettable 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.

关键词： smart building isolation story and structural energy-dissipation damage assessment

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