Negative shear lag effect of simply supported curved box girder

DOI

10.2991/icimm-16.2016.11How to use a DOI?

Keywords

Curved box girder, negative shear lag effect, finite element, parametric analysis.

Abstract

In order to study the negative shear lag effect of simply supported curved box girder, spatial shell finite element models under different web width, box girder height and curvature radius are founded based on finite element principle, and parametric sensitivity analysis is carried out so as to reveal the distribution law of shear lag coefficients along full span direction. The results show that: (1) Along span direction, it presents negative shear lag effect at the top nodes of inside web and positive shear lag effect at the top nodes of outside web, there are critical points of positive and negative shear lag effect at cross section center.(2) Compared with straight girder, curved girder consider the influence of curvature, whose stress distribution of positive and negative shear lag are more non-uniform.(3) Positive and negative shear lag effect are greatly influenced by web width, box girder height and curvature radius; when the web width and box girder height increase, negative shear lag coefficients inside are smaller and smaller, while positive shear lag coefficients outside are growing, positive and negative shear lag effect both become more prominent, when the curvature radius is smaller, positive and negative shear lag effect inside and outside are more and more obvious.

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  - Hai Lin Lu
AU  - Zheng Tang
AU  - Heng Cai
AU  - Xiao Long Zhou
PY  - 2016/11
DA  - 2016/11
TI  - Negative shear lag effect of simply supported curved box girder
BT  - Proceedings of the 6th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 52
EP  - 56
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-16.2016.11
DO  - 10.2991/icimm-16.2016.11
ID  - Lu2016/11
ER  -