Nonlinear Analysis of Double Square Steel Tubular Short Columns Filled with Concrete Under Axial Compression
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Literature Review 7 2.1 Introduction 7 2.2 Experimental work on square CFDST short columns 8 2.3 Numerical studies of Square CFDST short columns 10 2.3.1 Strength Bearing capacity of the composite 10 2.3.2 Modelling using Finite Element Method 10 2.4 Buckling of CFDST short columns 11 2.4 Conclusion 13 Chapter 3. Nonlinear Analysis of square CFDST short columns 14 3.1 Introduction 14 3.2 Methodology 16 3.3 Steel stress-strain relationship 16 3.4 Stress-strain Relationship for concrete 17 3.5 Analysis procedure 18 3.6 Conclusion