Effect of Geometric Nonlinearity on Deformation of Extra-long-span Cable-Stayed Bridges

DOI

10.2991/i3csee-16.2016.45How to use a DOI?

Keywords

Geometric Nonlinearity, Deformation, Main girder, Extra-long-span Cable-Stayed Bridges, Effect

Abstract

To fully take into account the effect of geometric nonlinearity on the deformation of extra-long-span cable-stayed bridges, a cable-stayed bridge with a main span of 780m was analyzed on the basis of the girder initial erection profile and three calculation modes, i.e., linearity, partially geometric nonlinearity without including cable sag , fully geometric nonlinearity, and the cantilever construction. The result shows that the geometric nonlinearity enhances distinctly with the increasing of cable length and cantilever length and cable sag stands out more prominently due to the three geometric nonlinearity factor. After the main girder closure, the geometric nonlinearity which caused by cable sag becomes slight. The research shows that it ensures the erection profile and final bridge geometry to take geometric nonlinearity into account.

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  - Hengda Chen
AU  - Sisi Yao
AU  - Tao Song
AU  - Fei Guo
PY  - 2016/04
DA  - 2016/04
TI  - Effect of Geometric Nonlinearity on Deformation of Extra-long-span Cable-Stayed Bridges
BT  - Proceedings of the 2016 International Conference on Civil, Structure and Environmental Engineering
PB  - Atlantis Press
SP  - 232
EP  - 235
SN  - 2352-5401
UR  - https://doi.org/10.2991/i3csee-16.2016.45
DO  - 10.2991/i3csee-16.2016.45
ID  - Chen2016/04
ER  -