Abstract
When SN490 beam is connected to BCR295 column, especially when the joint efficiency at beam web is low, there is a high possibility that the connection does not meet the joint coefficient criteria of connection strength. A comprehensive evaluation of the plastic deformation capacity of these connections is necessary. Nineteen beam-to-column specimens with joint coefficients ranged from 0.97 to 1.39 were tested under incremental cyclic loadings. The plastic deformation capacity, maximum strength, yield strength and full plastic strength of the specimens with different failure modes were evaluated quantitatively. The test results show that for the specimens with low joint coefficients, although the plastic deformation capacities are not particularly good, these specimens reached the minimum requirements of seismic design. The test results also indicate that the "Recommendation for Design of Connections in Steel Structures" provides accurate evaluation of both the maximum strength of beam-to-column connections and joint efficiency on the safe side.
