Title

Dynamics Of Inelastic Isolated Bridges Subjected To Analytical Pulse Ground Motions

Abstract

This paper aims at identifying the inelastic behavior of isolated bridges subjected to pulse ground excitation. The possibility of allowing yielding of the substructure will be investigated as an additional energy dissipation mechanism. This is important because: 1) identifying the inelastic behavior of isolated bridges will facilitate a more economical design; 2) it will be possible to correctly identify those existing isolated bridges whose strength is not sufficient to keep their response in the elastic range. The whole system of a base isolated bridge consists of three parts: 1) The superstructure with stiffness Ksup, 2) The isolation with stiffness Kb and 3) The substructure below the isolation level with stiffness Ks. However, as the superstructure usually consists of the bridge deck, which is very stiff, it is possible to investigate the behavior of the system with a simplified 2-DOF model. The deformation of the two elements, representing the response of the pier and the isolators will be determined using the software Opensees [1]. Parametric studies will be conducted for the determination of the essential parameters that define the behavior of the system.

Publication Date

1-1-2014

Publication Title

NCEE 2014 - 10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.4231/D39C6S18T

Socpus ID

84929011697 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84929011697

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