Computational & Technology Resources
an online resource for computational,
engineering & technology publications
PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Effects of Modified Slenderness on Nonlinear In-Plane Responses of Pin-Ended Circular Arch under a Central Concentrated Load
Y.-L. Pi1, M.A. Bradford1, Y.-L. Guo2 and C. Dou3
1Centre of Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, Australia
Y.-L. Pi, M.A. Bradford, Y.-L. Guo, C. Dou, "Effects of Modified Slenderness on Nonlinear In-Plane Responses of Pin-Ended Circular Arch under a Central Concentrated Load", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 236, 2015. doi:10.4203/ccp.108.236
Keywords: arch, concrete-filled steel tubular section, creep of core concrete, crown-pin, time-dependent.
It has been shown that the non-linear behaviour of a pin-ended circular arch with unequal rotational end restraints is complicated. The arch with unequal rotational end restraints under a central concentrated load may have a nonlinear equilibrium path that consists of one, two, or four unstable equilibrium paths and two or four limit points, and it may even have a nonlinear looped equilibrium path in some cases. However, it is conventionally thought that the nonlinear equilibrium path of a pin-ended circular arch under the central concentrated load has only one unstable equilibrium path with two limit points. This paper revisits the non-linear in-plane responses of pin-ended circular arches to the central concentrated load. It is shown that the equilibrium path of the non-linear in-plane responses may also has three, five, or nine equilibrium paths with two, four, and eight limit points. It is found the modified slenderness of an arch plays an important role for the number of the unstable paths and limit points.
purchase the full-text of this paper (price £20)