Experimental Evaluation of Replaceable Energy Dissipation Connection for Moment-Resisting Composite Steel Frames

A replaceable fuse steel-concrete composite connection: Force transfer mechanism and design considerations

“…In light of the above, a research gap concerning the load-carrying behaviour of the composite fuse connection exists, and further studies are needed aiming for the full validation of the connection. As a continuation of the previous study [30], this research attempts to study the detailed force transfer mechanism of the fuse connections. Critical quantities including strain distributions, internal forces and moments of the three test connection specimens [30] under cyclic loading scenarios were presented and discussed.…”

“…After an expected earthquake, the connections may recover to operation easily by replacing the damaged steel angles. To confirm the effectiveness of the proposed connection, a test programme was conducted by He et al [30]. The test results demonstrated that the proposed connection can effectively realise the damage-control behaviour by limiting damages in the replaceable steel angles arranged at the bottom flange of the beam for a reasonable deformation spectrum.…”

“…Hence the applicability of existing notions of bare steel fuse connections may need to be revisited, and novel steel-concrete composite fuse connections may be needed. Therefore, the first author and colleagues developed an asymmetric fuse connection recently [30], as schematically shown in Fig. 1.…”

“…Test results also showed that the specimens equipped with replaced steel angles exhibited satisfactory hysteretic performance, and both the initial stiffness and the resistance of the specimens with replaced angles were in good agreement with that of the specimen in the virgin state. More detailed information about the test programme was documented in reference [30]. Nevertheless, the previous study focused on the general hysteretic response of the connection (e.g.…”

“…Nevertheless, the previous study focused on the general hysteretic response of the connection (e.g. hysteretic moment versus drift responses) [30]. The practical design guide of the connection and load transfer mechanism has not been thoroughly examined.…”