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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
²Deparment of Civil Engineering, Tsinghua University, Beijing, China
³School of Civil Engineering, Beijing Jaotong University, Beijing, China

doi:10.4203/ccp.108.236

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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.

Summary

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.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 236 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 ²Deparment of Civil Engineering, Tsinghua University, Beijing, China ³School of Civil Engineering, Beijing Jaotong University, Beijing, China doi:10.4203/ccp.108.236 purchase the full-text of this paper Full Bibliographic Reference for this paper 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. Summary 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) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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