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Seismic performance assessment based on damage of structures, Part 1: Theory

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Author(s): Lađinović Đorđe | Radujković Aleksandra | Rašeta Andrija

Journal: Facta Universitatis Series : Architecture and Civil Engineering
ISSN 0354-4605

Volume: 9;
Issue: 1;
Start page: 77;
Date: 2011;
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Keywords: non-linear analysis | damage index | ductility | hysteretic energy dissipation | cumulative damage effects

ABSTRACT
The paper presents methodology for safety assessment and design of earthquake resistant structures based on application of damage spectra. The damage spectrum can be used for seismic evaluation of vulnerability of structures with given properties and can provide information of damage potential of the recorded ground motions. Damage spectrum represents a variation of a damage index versus structural period for a single-degree-of-freedom system subjected to an earthquake ground motion. The improved damage index, based on plastic deformation and hysteretic energy dissipation, is applied. It depends on maximal plastic deformation, ductility capacity and function including cumulative damage effects. This function, besides the parameter including influence of deterioration, depends on the history of cyclic deformations and on both cyclic and accumulative ductility.
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