A new definition of strong motion duration and related parameters affecting the response of medium–long period structures |
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| Authors: | Ioannis M Taflampas Constantine C SpyrakosIoannis A Koutromanos |
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| Institution: | Laboratory for Earthquake Engineering, Department of Civil Engineering, National Technical University of Athens, Zografos, Athens 15700, Greece |
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| Abstract: | This study presents a new definition of the strong motion duration combining the alternative bracketed and significant duration definitions. Based on the time integral of the absolute ground velocity, a new index is defined, as cumulative absolute displacement (CAD), and used to estimate the strong motion duration. The proposed bracketed-significant duration tbs is found to be well correlated with the strong motion part of the records, especially in the case of near-source events. The duration tbs and the CAD index are used to assess the anticipated structural behavior of medium–long period structures. |
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| Keywords: | Seismic damage criteria Strong motion duration Earthquake engineering |
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