Ductile Connections in Precast Concrete Moment Resisting Frames

Abstract

This paper presents the test results of four types of ductile, moment-resisting precast concrete frame connections and one monolithic concrete connection, all designed for use in high seismic zones. The performance of the precast concrete connections subject to displacement control reversed cyclic loading is compared with that of the monolithic connection. The precast concrete connections tested may be subdivided into three groups, namely cast-in-place, composite with welding, and bolted. The cast-in-place connections were located in either the beam or the column of the precast concrete subassemblies. The composite connection is a common detail used in the Turkish precast concrete industry. Two bolted specimens without corbels were also tested. Through these tests, the responses of different connection types under the same loading pattern and test configuration were compared. Comparisons of performance parameters, such as energy dissipation and ease of fabrication, revealed that the modified bolted connection may be suitable for use in high seismic zones.