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Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation

Camara, A. and Astiz, M. A. (2012). Pushover analysis for the seismic response prediction of cable-stayed bridges under multi-directional excitation. Engineering Structures, 41, pp. 444-455. doi: 10.1016/j.engstruct.2012.03.059


Cable-stayed bridges represent nowadays key points in transport networks and their seismic behavior needs to be fully understood, even beyond the elastic range of materials. Both nonlinear dynamic (NL-RHA) and static (pushover) procedures are currently available to face this challenge, each with intrinsic advantages and disadvantages, and their applicability in the study of the nonlinear seismic behavior of cable-stayed bridges is discussed here. The seismic response of a large number of finite element models with different span lengths, tower shapes and class of foundation soil is obtained with different procedures and compared. Several features of the original Modal Pushover Analysis (MPA) are modified in light of cable-stayed bridge characteristics, furthermore, an extension of MPA and a new coupled pushover analysis (CNSP) are suggested to estimate the complex inelastic response of such outstanding structures subjected to multi-axial strong ground motions.

Publication Type: Article
Additional Information: © 2012, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Publisher Keywords: Pushover analysis; Seismic excitation; Nonlinear dynamics; Cable-stayed bridges; Computational cost
Subjects: T Technology > TG Bridge engineering
Departments: School of Mathematics, Computer Science & Engineering > Engineering
Date Deposited: 05 Oct 2015 14:24
Text - Accepted Version
Available under License : See the attached licence file.

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