Abstract
Presented herein is a finite element formulation for free vibration analysis of horizontally curved steel I-girder bridges. Stiffness as well as mass matrices of the curved and the straight beam elements is formulated. Each node of both of them possesses seven degrees of freedom including the warping degree of freedom. The curved beam element is derived based on the Kang and Yoo's thin-walled curved beam theory in 1994. A computer program is developed to carry out free vibration analyses of the various bridges. Comparing with the frequencies using the general purpose program ABAQUS, the validity of the presented numerical formulation is shown. The numerical formulation is extensively applied to investigate free vibration characteristics of the bridges considering effects of the initial curvature, boundary condition, modeling method, and degrees of freedom of cross frame. Invaluable information which help practicing engineers better understand the vibration characteristics is provided.
| Original language | English |
|---|---|
| Pages (from-to) | 679-699 |
| Number of pages | 21 |
| Journal | Thin-Walled Structures |
| Volume | 43 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2005 Apr |
Bibliographical note
Funding Information:Financial support to the project provided by the Ministry of Construction & Transportation of Korea (grant no. C102B1000015-03B0000-01310) is gratefully acknowledged.
Keywords
- Finite element method
- Free vibration
- Horizontally curved girder
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Mechanical Engineering