Concrete-Filled Double Skin Steel Tubular Column with Hybrid Fibre Reinforced Polymer Post Fire Repair

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.

1.       Introduction

2.       What are Concrete-Filled Double Skin Steel Tubular (CFDST) Columns.

3.       Background on fire test of structural elements

4.       Post-Fire behaviour of CFDST columns

5.       Temperature distribution and post-fire behaviour of concrete-filled double skin steel tubular columns

·         Effect of different diameter and fire exposure time towards concrete and inner steel tube

·         Effect of thickness and fire exposure time on Residual Strength Index, Secant Stiffness and Ductility Index.

6.       Failure pattern of repaired fire-damaged concrete-filled double skin steel tubular (CFDST) columns

7.       Repair of fire-damaged concrete-filled double skin steel tubular (CFDST) columns with single layer of fibre reinforced polymer (FRP)

·         Effect on ultimate load

·         Effect on secant stiffness

·         Effect on Ductility Index (DI)