FINITE ELEMENT ANALYSIS OF JACKETED REINFORCED CONCRETE COLUMN SUBJECTED TO UNI-AXIAL LOAD

Anushree, Vijay kumar Y M

Abstract: One strategy for the jacketing of reinforced concrete column is to target the improvement of local vulnerabilities in columns related to inadequate strength (compressive & Flexural) or poor ductility. Theoretical analysis have been carried out in the present study for different column sections of jacket thickness of 50mm,75mm and 100mm for jacketed RC columns subjected to uni-axial compressive loading. The uni-axial load carrying capacity along the major axes have been carried out under balanced section condition. Linear static finite element analysis has been carried out for the jacketed RC columns to compare the confined concrete strength (fcc) of finite element analysis with that of theoretical analysis, to plot the variation of stresses at the central core concrete and at the interface of old and new concrete. The displacements at core with respect to both major and minor axis are also plotted. Considerations have been given for variations in the properties of different types concretes used in the jacket and the original column. In order to find out the increase in the confined capacity of jacketed columns due to strengthening with respect to original column, theoretical analysis has been carried out

Keywords: Uni-axial load, NISA Display IV, Jacketing, confined compressive strength.

DOI: https://doi.org/10.15623/ijret.2014.0315163