Behavior and strength of square steel tube columns filled with steel-reinforced self-compacting high-strength concrete

Title: Behavior and strength of square steel tube columns filled with steel-reinforced self-compacting high-strength concrete
Author(s): M. Zhu
Paper category : conference
Book title: SCC'2005-China: 1st International Symposium on Design, Performance and Use of Self-Consolidating Concrete
Editor(s): Zhiwu Yu, Caijun Shi, Kamal Henri Khayat and Youjun Xie
Print-ISBN: 2-912143-61-6
e-ISBN: 2912143624
Publisher: RILEM Publications SARL
Publication year: 2005
Pages: 675 - 681
Total Pages: 7
Nb references: 8
Language: English

Abstract: The square steel tube columns filled with steel-reinforced self-compacting high-strength concrete is a new combination of steel-concrete composite columns. In this type of composite columns, section steel is inserted into square steel tube and self-compacting high-strength concrete is filled into the tube. To investigate the behavior of the composite columns, fourteen short composite column specimens were tested under axial compression. The main parameters were the concrete strength, the width-to-thickness ratio and the section steel ratio. The experimental results indicate that the composite columns have very high strength and good ductility because of the interaction between the square steel tube, self-compacting high-strength concrete and section steel; the behavior of self-compacting columns and vibrated columns is almost the same; the concrete strength, the width-to-thickness ratio and the section steel ratio have significant effects on behavior and strength of the composite columns. A formula is proposed to calculate the ultimate strength of the composite columns under axial load. The calculated values agree well with the experimental results.

Online publication: 2005-04-11
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143624.073