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Validation of Ultimate load capacity of Hybrid Double Skin Composite Columns (HDSCs) using nastran

Author(s):

YUNUS , GHOUSIA COLLEGE OF ENGINEERING; Narayana B R (Assistant Professor), GHOUSIA COLLEGE OF ENGINEERING; Dr N S Kumar (Professor and Director(R&D)), GHOUSIA COLLEGE OF ENGINEERING

Keywords:

Concrete Filled Steel Tube, NASTRAN, Finite Element Analysis, Composite Column, Contact Element

Abstract

Concrete-filled-steel-tube columns have been adopted commonly for column production of tall buildings due to its exceptional confining outcome. However, the central part of concrete in CFST columns have relatively small involvement towards bending and torsion resistance, which can be efficiently replaced by another empty steel tube with much smaller area without reducing the load carrying capacity due to compound action. In the present work an analysis is made to study the effect of thickness, diameter of steel tube, grade of concrete and volume added to the steel tubes on the performance of CFST under axial compression using software package NASTRAN the result shows that concrete packed steel tubes exhibited significant improvement as the (slenderness ratio) l/d ratio of the columns goes on enhancing then ultimate load of the columns goes on declining in concrete in filled steel tube columns. A systematic investigation of behaviour of concrete filled Steel tubes column and a theoretical design method according to en 1994-1-1 euro-4 are presented. The investigation has been carried out for and circular CFST double skin composite columns beneath axial compression. The analytical model is urbanized to forecast the capacity of CFST accounting for contact between steel and concrete. The results obtained by theoretical computation are validated using NASTRAN Multi physics utility tool. The results are demonstrated by load carrying capacity table.

Other Details

Paper ID: IJSRDV4I90093
Published in: Volume : 4, Issue : 9
Publication Date: 01/12/2016
Page(s): 61-63

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