Abstract
This paper presents a simplified dynamic analysis of a suspension bridge subjected to a ground motion representing a seismic event. A Finite Element (FE) model developed here is found on the conditions that meet the design requirements for initial equilibrium state of a suspension bridge. Geometry and materials are assumed to be linear and elastic, respectively. Therefore, time consuming nonlinear iterations are not necessary to obtain key structural responses. First, a fundamental vibration behavior of a suspension cable was verified with an exact solution, and a stiffening girder-pylon structure modeled with three dimensional frame elements was validated with both free and forced vibration analyses. To simulate a seismic motion, a horizontal ground force was applied in longitudinal and transverse directions of a cable-stiffening girder-pylon system and the response spectrum analysis was conducted with two mode combination methods: Square Root of Sum of Square (SRSS) and Complete Quadratic Combination (CQC). Finally, a FE model of in-situ Nam-hae grand bridge was developed and its dynamic responses after complete erection were simulated under virtual ground motions, and diagrams of member forces were visualized by a DACS-POST, a web-based post-processing program.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
