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Exterior beam-column joint study with non-conventional reinforcement detailing using mechanical anchorage under reversal loading

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Abstract

Reinforced concrete structures beam-column joints are the most critical regions in seismic prone areas. Proper reinforcement anchorage is essential to enhance the performance of the joints. An attempt has been made to appraise the performance of the anchorages and joints. The anchorages are detailed as per ACI-352 (mechanical anchorages), ACI-318 (conventional bent hooks) and IS-456 (conventional full anchorage). The joints are detailed without confinement in group-I and with additional X-cross bar in group-II. To assess the seismic performance, the specimens are assembled into two groups of three specimens each and were tested under reversal loading, The specimen with T-type mechanical anchorage (Headed bar) and T-type mechanical anchorage combination with X-cross bar exhibited significant improvement in seismic performance: load-displacement capacity, displacement ductility, stiffness degradation, controlled crack capacity in the joint shear panel and also reduced congestion of reinforcement in joint core.

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Acknowledgements

The authors would like to thank the Department of Civil Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India for extending the facilities.

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  1. Department of Civil Engineering, Mepco Schlenk Engineering College, Sivakasi, 626 005, India

    S RAJAGOPAL & S PRABAVATHY

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  1. S RAJAGOPAL
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  2. S PRABAVATHY
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Correspondence to S RAJAGOPAL.

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RAJAGOPAL, S., PRABAVATHY, S. Exterior beam-column joint study with non-conventional reinforcement detailing using mechanical anchorage under reversal loading. Sadhana 39, 1185–1200 (2014). https://doi.org/10.1007/s12046-014-0229-6

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  • DOI: https://doi.org/10.1007/s12046-014-0229-6

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