Behaviour of a Beam to Column “Dry” Joint for Precast Concrete Elements

Abstract eng:
In Italy, precast concrete structures are traditionally designed as moment resisting frames with plastic hinges occurring at the column base and beams hinged to the columns. A ductile moment resisting connection between the column and the beam can provide the advantage of designing a seismic resisting frame which can develop plastic hinges at the beam-column joints, besides those at the column base. This paper aims at presenting the results of experimental tests concerning the cyclic behaviour of a particular beam-column “dry” connection for precast concrete elements. The joint is characterized by the use of high strength steel bars and of a fibre reinforced grout pad in the “Z” shaped beam-column interface, increasing the shear resistance of the connection. The experimental results show a good performance of the joint, in term of resistance, ductility and energy dissipation, with little damage observed in the connected members.

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