Research on chloride transport of prestressed box girders under coupling action of salt fog and fatigue loading

DOI

10.2991/iceep-18.2018.36How to use a DOI?

Keywords

fatigue loading; salt fog area; prestressed box girders; coupling action.

Abstract

In order to research on the transport of chloride ions in prestressed box girders under coupling action of salt fog and fatigue loading, the volumetric strain and porosity as the intermediate variables, coupled processes was established based on the fatigue damage criterion. And compared with the related test data, the chloride ion distribution characteristics in the prestressed concrete of box girders under different prestress level and coupling times was investigated. The results showed that the coupling action significantly increases the chloride ion distribution in the surface of the prestressed rebar; Prestressed levels have little impact on the chloride ion permeability on the inside of the box girder, appropriately raise prestressed level can improve the permeability resistance of box girder; Coupling calculation results is less than a single coupling, and with the increase of penetration depth, multiple coupled with the computational result of single coupling gap is reduced, and which results is linear decreasing; Coupling times get basic guarantee for 10 times can calculation accuracy.

Copyright

© 2018, 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  - Guofang Chen
AU  - Yingzi Zhang
AU  - Chengxin Wang
AU  - Lizhe Jia
AU  - Yiming Duan
PY  - 2018/09
DA  - 2018/09
TI  - Research on chloride transport of prestressed box girders under coupling action of salt fog and fatigue loading
BT  - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018)
PB  - Atlantis Press
SP  - 207
EP  - 213
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-18.2018.36
DO  - 10.2991/iceep-18.2018.36
ID  - Chen2018/09
ER  -