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Simplified closed-form solution for the determination of the moment-curvature response of a circular RC section

Raffaele, D; Gentile, R; Mezzina, M; (2015) Simplified closed-form solution for the determination of the moment-curvature response of a circular RC section. In: Proceedings of the 2015 COMPDYN Conference. (pp. pp. 4160-4170). COMPDYN: Crete Island, Greece. Green open access

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Abstract

A seismic vulnerability analysis of a multi-span simply supported bridge is often based on the seismic response of the most critical pier. This response is influenced by different collapse modes (flexural, shear, second order effects, lap-splice of longitudinal bars or their buckling). Among these the flexural behaviour is important and it's known if the equivalent plastic hinge length and the Moment-Curvature law of the fixed end are given. This paper provides a closed-form dimensionless solution to obtain a 5 point Moment-Curvature diagram for circular RC section. The solution is based only on three parameters: dimensionless axial force, mechanical percentage of longitudinal reinforcement, geometrical percentage of transversal reinforcement. A numerical example is presented to test the solution comparing it with a FEM analysis.

Type: Proceedings paper
Title: Simplified closed-form solution for the determination of the moment-curvature response of a circular RC section
Event: 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Open access status: An open access version is available from UCL Discovery
Publisher version: http://2015.compdyn.org/
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: simply supported bridges; reinforced concrete; seismic vulnerability; moment-curvature.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction
URI: https://discovery.ucl.ac.uk/id/eprint/10065778
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