Title

RY-Μ-TN Relations For Seismically Isolated Structures

Keywords

Extreme hazards; Inelastic isolated structures; Resilience; Seismic isolation

Abstract

The relations between the strength reduction factor Ry, the displacement ductility μ and the vibration period of the structure Tn have been extensively studied for fixed-base structures by numerous researchers in the past. This project aims at identifying similar relations for base-isolated structures. The investigation is conducted using a two-degree-offreedom model of a base-isolated structure. The hysteretic behavior of the base isolation devices and the isolated superstructure is simulated in Matlab and OpenSees using a Bouc-Wen model. The results of the observed response are verified through the excitation of the isolated structure by a large number of recorded ground motions. These motions cover a wide range of ground motion types, magnitudes and distances. The effects of base isolation and superstructure design parameters, such as stiffness and strength, are quantified through parametric studies. The resulting Ry-μ-Tn relationship for inelastic seismically isolated structures is based on the statistical processing of the inelastic response data of the isolated superstructure.

Publication Date

1-1-2013

Publication Title

ECCOMAS Thematic Conference - COMPDYN 2013: 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Proceedings - An IACM Special Interest Conference

Number of Pages

1771-1781

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84898978741 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84898978741

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