The reports of damage observed after recent earthquakes pointed out the key importance of beam-to-column joints on the global performance of reinforced concrete (RC) structures. Several capacity models are currently available for evaluating the shear strength of beam-to-column joints under seismic actions. Furthermore, plenty of experimental tests have been performed on exterior beam-to-column sub-assemblages with the aim of studying their behaviour under monotonic and cyclic loads. On this subject, the present paper focuses on exterior joints in RC beams. The State-of-the-Art about evaluating shear strength in exterior RC joint is outlined and the main parameters which control the joint behaviour are pointed out. Then, a database with the results of a wide number of experimental tests available in the scientific literature is presented. It is employed for assessing accuracy and reliability of the various models for shear strength of beam-to-column joints in RC structures. Finally, further calibrations are presented for enhancing the accuracy of some of the mentioned models.

Shear Capacity of Exterior Joints in Reinforced Concrete Structures Under Seismic Action

LIMA, CARMINE;MARTINELLI, Enzo;FAELLA, Ciro
2011

Abstract

The reports of damage observed after recent earthquakes pointed out the key importance of beam-to-column joints on the global performance of reinforced concrete (RC) structures. Several capacity models are currently available for evaluating the shear strength of beam-to-column joints under seismic actions. Furthermore, plenty of experimental tests have been performed on exterior beam-to-column sub-assemblages with the aim of studying their behaviour under monotonic and cyclic loads. On this subject, the present paper focuses on exterior joints in RC beams. The State-of-the-Art about evaluating shear strength in exterior RC joint is outlined and the main parameters which control the joint behaviour are pointed out. Then, a database with the results of a wide number of experimental tests available in the scientific literature is presented. It is employed for assessing accuracy and reliability of the various models for shear strength of beam-to-column joints in RC structures. Finally, further calibrations are presented for enhancing the accuracy of some of the mentioned models.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/3039983
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