Connections between RC beam and square tubed-RC column under axial compression: Experiments

Xu Hong Zhou, Bin Yang Li, Dan Gan, Jie Peng Liu, Y. Frank Chen

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The square tubed-reinforced concrete (TRC) column is a kind of special concrete-filled steel tube (CFST) columns, in which the outer thin-walled steel tube does not pass through the beam-column joint, so that the longitudinal steel reinforcing bars in the RC beam are continuous through the connection zone. However, there is a possible decrease of the axial bearing capacity at the TRC column to RC beam connection due to the discontinuity of the column tube, which is a concern to engineers. 24 connections and 7 square TRC columns were tested under axial compression. The primary parameters considered in the tests are: (1) connection location (corner, exterior and interior); (2) dimensions of RC beam cross section; (3) RC beam type (with or without horizontal haunches); (4) tube type (with or without stiffening ribs). The test results show that all specimens have relatively high load-carrying capacity and satisfactory ductility. With a proper design, the connections exhibit higher axial resistance and better ductility performance than the TRC column. The feasibility of this type of connections is verified.

Original languageEnglish (US)
Pages (from-to)453-464
Number of pages12
JournalSteel and Composite Structures
Volume23
Issue number4
DOIs
StatePublished - Mar 20 2017

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Metals and Alloys

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