Influence of Span Ratio on Modals and Mode Direction Factors of Curved Box-girder Bridges

DOI

10.2991/ammsa-17.2017.29How to use a DOI?

Keywords

span ratio; curved box-girder bridges; modal; mode direction factor

Abstract

The vibration mode of curved box-girder bridge was decomposed into 4 mode direction factors by energy ratios. 4 two-span curved box-girder bridge models were built taking span ratio as parameter. The modal characteristics and the mode direction factors were analyzed along with varying span ratio. It is advised that the stiffness increases more slowly than mass for curved box-girder bridge, the vertical bending mode must be taken account, the torsion mode factor decreases with the decreasing of span ratio, the summit of longitudinal movement direction mode factor appears on higher modal orders, and high order modals must be considered when designing.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Guohua Song
AU  - Dongwei Wang
AU  - Xiaofang Liu
PY  - 2017/05
DA  - 2017/05
TI  - Influence of Span Ratio on Modals and Mode Direction Factors of Curved Box-girder Bridges
BT  - Proceedings of the 2017 International Conference on Applied Mathematics, Modelling and Statistics Application (AMMSA 2017)
PB  - Atlantis Press
SP  - 133
EP  - 138
SN  - 1951-6851
UR  - https://doi.org/10.2991/ammsa-17.2017.29
DO  - 10.2991/ammsa-17.2017.29
ID  - Song2017/05
ER  -