COMPDYN 2013 4 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, V. Papadopoulos, V. Plevris (eds.) Kos Island, Greece, 12–14 June 2013 RESTRAINED CONCRETE SHRINKAGE IN CASE OF STRENGTHENED BRIDGE PIERS BY CONCRETE JACKETING Andreas P. Lampropoulos 1 , Ourania T. Tsioulou 2 , and Stephanos E. Dritsos 2 1 School of Environment and Technology, University of Brighton Lewes Road, Brighton, BN2 4GJ, UK [email protected] 2 Department of Civil Engineering, University of Patras Patras 26500, Greece [email protected], [email protected] Keywords: bridge piers, concrete jackets, finite elements, restrained shrinkage. Abstract. Reinforced concrete (RC) jacketing of weak bridge pier columns is an effective ret- rofitting technique, particularly in seismic regions. The effect of restrained concrete shrink- age on the strength of concrete jackets is investigated in this study. A series of compressive tests are performed on square prism concrete specimens where steel plates are placed to rep- resent the restrained shrinkage effect on the concrete of the jacket. Then, a numerical proce- dure to simulate the concrete shrinkage effect using the finite element method is proposed and results are justified and validated using the experimental data. The results indicate that re- strained concrete shrinkage considerably reduces the stiffness and the maximum load of the strengthened elements.
RESTRAINED CONCRETE SHRINKAGE IN CASE OF STRENGTHENED BRIDGE PIERS BY CONCRETE JACKETING
May 10, 2023
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