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http://dx.doi.org/10.12989/scs.2017.23.4.453

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

Zhou, Xu-Hong (Key Laboratory of New Technology for Construction of Cities in Mountain Area (Ministry of Education), Chongqing University)
Li, Bin-Yang (Key Laboratory of New Technology for Construction of Cities in Mountain Area (Ministry of Education), Chongqing University)
Gan, Dan (Key Laboratory of New Technology for Construction of Cities in Mountain Area (Ministry of Education), Chongqing University)
Liu, Jie-Peng (Key Laboratory of New Technology for Construction of Cities in Mountain Area (Ministry of Education), Chongqing University)
Chen, Y. Frank (Department of Civil Engineering, The Pennsylvania State University)
Publication Information
Steel and Composite Structures / v.23, no.4, 2017 , pp. 453-464 More about this Journal
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.
Keywords
square tubed-reinforced-concrete (TRC); concrete filled tube connections; horizontal haunched RC beam; failure pattern; axial compression behavior;
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Times Cited By KSCI : 1  (Citation Analysis)
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