Investigation of Critical Damage Parameters of RC Isolated Bridge by Taguchi Method

Abstract

Taguchi orthogonal array depends on a statistical factorial design (FD) model. The present work investigated
the effects of critical factors of bridge design material properties (DMP) on isolated bridge collapse state
(CS). Using a three dimensional non-linear finite element(FEM) RC isolated bridge model, this work investigates
the effects of bridge damage parameters(DMP) including concrete strength (fck), steel yield strength (fy),
damping ratio (Dr), Pier elastic stiffness (Kp), and Abutment elastic stiffness (Ka) were considered. The aim
of this research paper is to establish which parameters have the most significant impact on probability of
isolated bridge damage or vulnerability. The experiment was carried out using L27, the orthogonal array
(OA), for which the five factors are modified at three different stages. The ANOM is used to determine the
characteristics of the optimal composition. An ANOVA is used to identify which independent factors
contributed to the overall outcome. According to the current research, it is to investigate factors that
significantly influence the probability of RC bridges collapsing by creating a bridge failure record of bridges
situated in India.