Numerical and Analytical modelling of reinforced concrete circular columns subjected to torsion

Mondal, T S and S, Suriya Prakash (2016) Numerical and Analytical modelling of reinforced concrete circular columns subjected to torsion. In: International Congress on Computational Mechanics and Simulation (ICCMS), 27th June – 1st July 2016, Indian Institute of Technology Bombay (IITB).

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Abstract

This paper compares the efficiency of tension stiffened softened truss model (TS-STM) and a nonlinear finite element (FE) model to predict the behaviour of reinforced concrete (RC) circular columns under torsional loading. Predictions of the models are calibrated with test data on two circular columns taken from literature. Overall torque – twist behaviour and average strain in the transverse reinforcements were parameters for comparison. It is observed that both the models predicted the overall torsional behaviour of the test specimens reasonably well. However, the peak twist and post peak behaviour were better captured by the TS-STM. Average strain in transverse reinforcements predicted by the TS-STM was also closer to the measured values compared to the FE predictions. On the whole, it can be concluded that, TS-STM performs better than nonlinear FE model in capturing the overall response of circular RC columns subjected to torsional loading.

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