Estimating a Seismic Wave Velocity for Exciting the Greatest Anticipated Vertical Deck Displacement of a Cable-Stayed Bridge Subjected to Asynchronous Excitation
Open Access
- 4 February 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in International Journal of Concrete Structures and Materials
- Vol. 15 (1), 1-17
- https://doi.org/10.1186/s40069-020-00450-9
Abstract
The purpose of this study is to examine the effects of the seismic wave velocity on vertical displacement of a cable-stayed bridge’s deck under asynchronous excitation. The Quincy Bayview Bridge located in Illinois, USA, and four other generic bridges are selected for the study. Ten records obtained from earthquakes in US, Japan, and Taiwan are used as input for the seismic excitation in the time-history analysis. Two equations are proposed in this study to determine a critical seismic wave velocity that would produce the greatest vertical deck displacement. The critical wave velocity depends on the total length of the bridge, the fundamental period of the bridge, and the C-factor. The C-factor in this study is 0.72, which is based on analyzed results from the five selected bridges. The two equations and the C-factor are verified through application on two 3-span cable-stayed bridges studied previously by Nazmy and Abdel-Ghaffar. The proposed C-factor of 0.72 is recommended for use for typical 3-span cable-stayed bridges with a side-to-main span ratio of about 0.48. The methodology developed in the study, however, can be applied to any specific bridge to examine the excitation of the deck vertical displacement under the longitudinal seismic ground motion.Keywords
Funding Information
- Natural Sciences and Engineering Research Council of Canada
- Concordia University
This publication has 28 references indexed in Scilit:
- Seismic behavior of cable‒stayed bridges: a reviewMOJ Civil Engineering, 2018
- Multi-support excitation shaking table test of a base-isolated steel cable-stayed bridgeJournal of the Earthquake Engineering Society of Korea, 2015
- Shake-Table Studies of a Four-Span Bridge Model with Advanced MaterialsJournal of Structural Engineering, 2012
- Vibration and Shock HandbookPublished by Taylor & Francis Ltd ,2005
- Lessons Learned from the Damaged Chi-Lu Cable-Stayed BridgeJournal of Bridge Engineering, 2004
- Seismic response of a cable‐stayed bridge deck under multi‐component non‐stationary random ground motionEarthquake Engineering & Structural Dynamics, 2003
- Damage to Cable‐Stayed Bridge during 1988 Saguenay Earthquake. I: Pseudostatic AnalysisJournal of Structural Engineering, 1993
- Damping and response measurement on A small‐scale model of A cable‐stayed bridgeEarthquake Engineering & Structural Dynamics, 1993
- Dynamic behaviour of a cable‐stayed bridgeEarthquake Engineering & Structural Dynamics, 1980
- Nonlinear static analysis of cable-stayed bridge structuresComputers & Structures, 1979