This book highlights the residual strength of the CFDST column, that can be used to determine the most suitable repair method in order to retrofit the column. The book elaborates on the behavior of CFDST column after being exposed to fire. This book also discusses the effectiveness of repair method using single and Hybrid Fibre Reinforced Polymer (FRP) of fire-damaged CFDST columns. It concludes by taking a look at different parameters such as thickness of outer steel tube and fire exposure time as factors affecting thermal properties/stability.
Author(s): Kok Keong Choong, Jayaprakash Jaganathan, Sharifah Salwa Mohd Zuki, Shahiron Shahidan, Nurul Izzati Raihan Ramzi Hannan
Publisher: Springer
Year: 2021
Language: English
Pages: 96
City: Singapore
Foreword
Preface
Acknowledgements
Contents
Abbreviations
Symbols
1 Introduction
References
2 Literature Review
2.1 Concrete-Filled Double Skin Steel Tubular (CFDST) Columns
2.2 Background on Fire Test of Structural Elements
2.2.1 Fire Test
2.2.2 Fire Test in Standards and Codes
2.2.3 Fire Test in Previous Research Studies
2.2.4 Fire Provision of Concrete-Filled Double Skin Steel Tubular (CFDST) Columns in Standards/Codes
2.2.5 Fire Provision in Malaysia
2.3 Behavior of Concrete-Filled Double Skin Steel Tubular Columns Exposed to Fire
References
3 Post-fire Behavior of Concrete-Filled Double Skin Steel Tubular Columns
3.1 Concrete
3.2 Steel
3.3 Concrete-Filled Steel Tubular (CFST) Columns and Concrete-Filled Double Skin Steel Tubular (CFDST) Columns
3.3.1 Residual Strength, Stiffness and Ductility of Fire-Damaged CFST Columns
3.3.2 Cross-Sectional Dimension
3.3.3 Exposure Time
3.3.4 Temperature Distribution of Concrete-Filled Double Skin Steel Tubular (CFDST) Columns
3.4 Repair of Fire-Damaged Concrete-Filled Steel Tubular (CFST) Columns Using Fiber Reinforced Polymer (FRP)
References
4 Temperature Distribution and Post-fire Behavior of Concrete-Filled Double Skin Steel Tubular Columns
4.1 Physical Appearance After Fire Exposure
4.2 Effect of Different Diameter and Fire Exposure Time Towards Concrete and Inner Steel Tube Temperature
4.2.1 Time-Temperature Curve of Concrete-Filled Double Skin Steel Tubular (CFDST) Columns
4.3 Effect of Thickness on Residual Strength Index, Secant Stiffness and Ductility Index
4.4 Effect of Fire Exposure Time on Residual Strength Index, Secant Stiffness and Ductility Index
References
5 Repair of Fire-Damaged Concrete-Filled Double Skin Steel Tubular Columns with Fiber Reinforced Polymer (FRP)
5.1 Failure Pattern of Repaired Fire-Damaged Concrete-Filled Double Skin Steel Tubular (CFDST) Column
5.2 Repaired of Fire-Damaged Concrete-Filled Double Skin Steel Tubular (CFDST) Columns with Single Layer of Fiber Reinforced Polymer (FRP)
5.2.1 Effect of Fiber Reinforced Polymer (FRP) Wrap on Ultimate Load
5.2.2 Effect of Fiber Reinforced Polymer (FRP) Wrap on Secant Stiffness
5.2.3 Effect of Fiber Reinforced Polymer (FRP) Wrap on Ductility Index (DI)
5.3 Repair of Fire-Damaged Concrete-Filled Double Skin Steel Tubular (CFDST) Column with Hybrid Fiber Reinforced Polymer (FRP)
References
6 Conclusion and Recommendation
6.1 Relationship Between Thickness of Outer Steel Tube and Maximum Temperature of Concrete
6.2 Residual Strength of Concrete-Filled Double Skin Steel Tubular (CFDST) Columns After Fire Exposure
6.3 Effectiveness of Repair Method Using Single and Hybrid Fiber Reinforced Polymer (FRP) on Fire-Damaged Concrete-Filled Double Skin Steel Tubular (CFDST) Columns
6.4 Recommendation for Future Work
Reference
