Composite column

types of composite column their performance indices

1. INTRODUCTION What is steel-concrete composite column ? A steel-concrete composite column is a compression member, comprising either a concrete encased steel section or a concrete filled tubular section of hot-rolled steel and is generally use as a load-bearing member in a composite framed structure. Types of steel-concrete composite column Fully or partially concrete encased steel section. Concrete filled steel tube section . 1

2. Concrete Filled S teel T ube C olumn (CFST) Circular Concrete F illed S teel T ube C olumn ( CCFST) Rectangular Concrete Filled Steel Tube Column ( RCFST) Square Concrete Filled Steel Tube Column ( SCFST) 2 Introduction…

3. Advantages of Steel-Concrete Composite Column It increases the usable floor space area for given strength. It has great fire and corrosion resistance when the concrete e ncased steel columns are used. It provide good enough strength, stability and stiffness to the structure. By using composite column, there is no need to provide a formwork to column It provides constant outer dimensions of the column over a number of floors so, architecture detailing and construction becomes easy 3 Introduction…

4. Performance Indices Ductility Index (DI) = where, is the deformation at ultimate load. is deformation when load falls 85% of ultimate load. Strength Index (SI) = is ultimate load of concrete filled specimen = area of steel , = area of concrete is yield strength of steel and is characteristic strength of concrete. Concrete Contribution R atio (CCR) = is Ultimate load (filled) and is Ultimate load (hollow)   4 Result and Discussion…

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