Experimental Tests for the Evaluation of the Energy Dissipation Capacity of a Double Split Tee Connection with SMA Bolts

다국어 초록 (Multilingual Abstract)

The double split tee connection is a form of connection suitable for ordinary or special moment frames. This double splittee connection represents different behavioral characteristics and failure modes depending on the stiffness ratio of the beamsand columns, the geometric shape of the T-stub and the panel zone effect. In general, the geometric shape of the T-stub andits effects can be classified by the parameter α representing the value of the ratio between the moment at the centerline of thebolt line and the flange moment at the face of the T-stub stem. Energy dissipation capacity, however, can be improved byapplying materials that facilitate the expression of seismic performance, as with the double split tee connection, which has arelatively small α value. In this regard, this study attempted to investigate the changes in energy dissipation capacity byapplying the shape memory alloy (SMA), which provides excellent shape memory capability and ability to restoresuperelasticity to the double split tee connection having relatively small α value. Specimens of the double split tee connectionfastened using SMA bolts were fabricated, and an experiment on the connections was performed.

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