Geometrical nonlinear analysis for multi-parameters of four tower cable-stayed bridge based on the bar element model

DOI

10.2991/icsmme-15.2015.32How to use a DOI?

Keywords

Cable-Stayed Bridge, Nonlinear, Cable, Girder, CR Formulation

Abstract

Based on the nonlinear theory of cable-stayed bridge, nonlinear effects- cable sag, beam column effect, large displacement are calculated accurately using element geometric stiffness matrix, CR formulation, bar unit, Ernst formula and the catenary equation. Nonlinear analysis is applied on the study of cable force, the stress in main girder, pylon stress and tower deviation of the four towers cable-stayed bridge. The calculation results considering nonlinear effect is compared with which nonlinear effect is not considered under completion state. Results show that the geometric nonlinearity effect on the cable force is 0.09 ~ 1.04%; the effect on cumulative vertical displacement is -5 ~ 5mm; the effect on the lower edge stress of main girder is 0.5 ~ 1.5%; the effects on the higher edge stress of main girder is 0 ~ 0.5%. The effect on the lower edge stress of girder is significantly higher than the upper edge. The effect on the stress of tower is -0.1 ~ 0.1MPa; the effect on horizontal deviation difference at the top of tower is 1.4%~3.1%. Results show that the geometric nonlinearity has a certain effect on the state of bridge, the effects of geometric nonlinearity should be considered in design and construction control calculation.

Copyright

© 2015, 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/).

Download article (PDF)

TY  - CONF
AU  - ZionHui Heng
AU  - ZiQiang Zhu
AU  - XianQi He
PY  - 2015/11
DA  - 2015/11
TI  - Geometrical nonlinear analysis for multi-parameters of four tower cable-stayed bridge based on the bar element model
BT  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 137
EP  - 141
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.32
DO  - 10.2991/icsmme-15.2015.32
ID  - Heng2015/11
ER  -