Bond Check for Concrete-Filled Steel Tubular Columns

by Masahide Tomii, Kyushu Univ, Fukuoka, Japan,



Document Type: Proceeding Paper

Part of: Composite and Mixed Construction

Abstract: In order that a concrete-filled steel tubular column may display a maximum bearing capacity for sustaining the long-term vertical loads transferred from the steel beams to the steel tube of the column, the encased concrete core should share the axial force of the column as much as possible. In order that a concrete-filled steel tubular column may display a maximum flexural strength to correspond to the axial force at the critical sections of the top and bottom of the column, the concrete of the sections should carry the optimum axial compression force. To satisfy these two requirements the axial forces must be transferred between the steel tube and the encased concrete. This paper describes the design procedures to transfer the axial force by bond stress between the steel tube and encased concrete.

Subject Headings: Steel columns | Concrete columns | Concrete | Axial forces | Flexural strength | Steel beams | Compressive strength | Beam columns

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