WIT Press

Analytical Formulation Of Fragilities

Price

Free (open access)

Paper DOI

10.2495/SD950431

Volume

15

Pages

8

Published

1995

Size

775 kb

Author(s)

A. Singhal & A.S. Kiremidjian

Abstract

In this paper, formulations for developing fragility curves for reinforced concrete frame structures are presented. Fragility curves describe the conditional probabilities of a structure being in different damage states at given levels of earthquake ground motion. The ground motion, in this paper, is characterized by spectral acceleration. Gaussian stationary models with modulating functions are used for the generation of earthquake time histories. Identification of the different damage states is based on the modified Park and Ang damage index?. The modified Takeda model is used to describe the hysteretic behavior of the components of a structure in nonlinear time domain analysis. Example fragility curves are developed for low rise reinforced concrete frames. 1 Introduction Reliable damage es

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