Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering

Changes in natural torsional frequency of horizontally-curved bridge by reinforcement

Authors
N. Kunla, B. Puangkird
Corresponding Author
N. Kunla
Available Online November 2015.
DOI
https://doi.org/10.2991/icsmme-15.2015.6How to use a DOI?
Keywords
Evolution-Fea, Finite Element, Torsional Vibration, Natural Frequency, Curved Steel I-Girder
Abstract
Horizontally curved steel I-girder bridge (HCSIB) has low torsional resistance hence has a high risk of breakage when it vibrates. This study investigated the changes in the natural torsional frequency of an HCSIB when it is reinforced with different types of bracing members. Three-dimensional finite element numerical analysis with Evolution FEA open-source software was applied to an established model of HCSIB. The simulation results showed that the changes in the bridge’s natural torsional frequency caused by reinforcement with K, Z, and X-type cross frames were significant and almost equal to each other, and reinforcement with extra X-type cross frames caused a bigger change, but reinforcement with bottom bracings caused a much smaller change. Overall, K-type cross frames are the best choice for reinforcement because they are the most economical while providing virtually the same high torsional frequency as those provided by the other two cross frames.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Proceedings
2015 International Conference on Structural, Mechanical and Material Engineering
Part of series
Advances in Engineering Research
Publication Date
November 2015
ISBN
978-94-6252-144-5
ISSN
2352-5401
DOI
https://doi.org/10.2991/icsmme-15.2015.6How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - N. Kunla
AU  - B. Puangkird
PY  - 2015/11
DA  - 2015/11
TI  - Changes in natural torsional frequency of horizontally-curved bridge by reinforcement
BT  - 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.6
DO  - https://doi.org/10.2991/icsmme-15.2015.6
ID  - Kunla2015/11
ER  -