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Composite column

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dishant pansuriya
dishant pansuriya

A steel-concrete composite column consists of either a concrete encased steel section or a concrete filled steel tubular section used as a load-bearing member. There are three main types of concrete filled steel tube columns: circular, rectangular, and square. The advantages of composite columns include increased floor space for the same strength, good fire and corrosion resistance, and consistent dimensions between floors. Performance is measured using ductility index, strength index, and concrete contribution ratio.

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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
Concrete Filled Steel Tube Column (CFST) 1. Circular Concrete Filled Steel Tube Column (CCFST) 2. Rectangular Concrete Filled Steel Tube Column (RCFST) 3. Square Concrete Filled Steel Tube Column (SCFST) 2 Introduction
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 encased 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
Performance Indices Ductility Index (DI) = % where, is the deformation at ultimate load. 85% 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 Ratio (CCR) = , , , is Ultimate load (filled) and , is Ultimate load (hollow) 4 Result and Discussion
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Composite column

  • 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 Steel Tube Column (CFST) 1. Circular Concrete Filled Steel Tube Column (CCFST) 2. Rectangular Concrete Filled Steel Tube Column (RCFST) 3. 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 encased 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. 85% 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 Ratio (CCR) = , , , is Ultimate load (filled) and , is Ultimate load (hollow) 4 Result and Discussion
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