Stress transfer capacity from steel tubes to filled concrete in a CFT column at the connection by beams and diagonal braces

A. Kawano, K. Sakino, Y. Okamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With regard to moment-resistant frames composed of CFT (concrete-filled tube) columns, H-shaped beams and diagonal braces, the strong axial force of a diagonal brace firstly transfer to the steel tubular portion of a column at beam-to-column connection and then to the filled concrete. Two types of stress transfer mechanisms from steel portion to the filled concrete may be available in CFT columns. The one is the concrete bond in a steel tube, and the other is a mechanical shear key effect functioned by the cut-through diaphragms which are often used for a beam-to-column connection in Japan. However, either of the mechanisms have not been demonstrated by realistic frame assembly specimens so far. Such a lack of the information is now causing the over-safety design for the stress transfer in a connection especially installed by diagonal braces. From this point of view, we performed a horizontal loading test of CFT frame assemblies, and discussed the stress transfer effects for both mechanisms.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006
Pages619-624
Number of pages6
Publication statusPublished - Dec 1 2006
Event5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006 - Yokohama, Japan
Duration: Aug 14 2006Aug 17 2006

Publication series

NameProceedings of the 5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006

Other

Other5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006
CountryJapan
CityYokohama
Period8/14/068/17/06

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

Cite this

Kawano, A., Sakino, K., & Okamoto, Y. (2006). Stress transfer capacity from steel tubes to filled concrete in a CFT column at the connection by beams and diagonal braces. In Proceedings of the 5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006 (pp. 619-624). (Proceedings of the 5th International Conference on Behaviour of Steel Structures in Seismic Areas - Stessa 2006).