Fatigue analysis of cracks at the rib-to-deck welded joint of orthotropic steel deck accounting for the influence of compressive stress in cyclic loading

DOI

10.2991/icmmse-17.2017.57How to use a DOI?

Keywords

Orthotropic steel bridge deck, Rib-to-deck welded joint, Fatigue analysis, Cyclic loading with negative stress ratio, Influence of compressive stress, Reverse plastic zone at crack tip

Abstract

This paper presents the fatigue analysis of surface cracks at the rib-to-deck welded joint of orthotropic steel deck, in which the influence of the compressive stress in the cyclic loading on the crack growth is taken into account. The stress intensity factors along the surface crack front at the rib-to-deck welded joint are evaluated efficiently by Schwartz-Neuman alternating method based on a 3D local model of the rib-to-deck welded joint containing the crack. The influence of the compressive stress in cyclic loading on the fatigue crack growth is taken into account by a reverse plastic zone model at the crack tip of a 2D fracture computational mode. The results show that the compressive stress in the cyclic loading significantly influences the growth of the fatigue cracks at the rib-to-deck welded joints. The present study also indicates that the rib-to-deck welded joint of the orthotropic steel deck meets the fatigue design requirement when the thickness of the deck plate is 14 mm.

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  - Ming Deng
AU  - Qing Du
AU  - Ningfei Huo
PY  - 2017/04
DA  - 2017/04
TI  - Fatigue analysis of cracks at the rib-to-deck welded joint of orthotropic steel deck accounting for the influence of compressive stress in cyclic loading
BT  - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
PB  - Atlantis Press
SP  - 347
EP  - 352
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-17.2017.57
DO  - 10.2991/icmmse-17.2017.57
ID  - Deng2017/04
ER  -