Fatigue cracks and stress amplitude analysis of orthotropic steel deck in a suspension bridge

DOI

10.2991/icseee-16.2016.64How to use a DOI?

Keywords

Steel box girder; orthotropic steel deck; fatigue crack; transverse crossbeam; cope hole.

Abstract

Four kinds of fatigue cracks are found in a suspension bridge with orthotropic steel deck. Finite element analysis was conducted to investigate the reason of fatigue cracks originated from the cope hole in the transverse crossbeams. The stresses surround the cope holes in the crossbeam are calculated under vehicle loads which are imposed on scheduled positions on the bridge deck. Then the relationship between the peak stresses surround cope hole and the loading position is acquired. There are 2 areas have the effects of stress concentration surround a cope hole, which are named area-A and area-B. The calculation results indicate that the peak stress in area-A is greater than the allowed fatigue stress-range under 2 million cyclic loads, and the actual position of fatigue crack detected in the bridge is coincide with the position of area-A.

Copyright

© 2016, 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  - Zhuoyi Chen
AU  - Chuanxi Li
AU  - Lu Ke
PY  - 2016/12
DA  - 2016/12
TI  - Fatigue cracks and stress amplitude analysis of orthotropic steel deck in a suspension bridge
BT  - Proceedings of the 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016)
PB  - Atlantis Press
SP  - 343
EP  - 347
SN  - 2352-5401
UR  - https://doi.org/10.2991/icseee-16.2016.64
DO  - 10.2991/icseee-16.2016.64
ID  - Chen2016/12
ER  -