Abstract
An analytical procedure is proposed to establish the nonlinear moment-rotation ( M -Φ) characteristics for the bolted end-plate connections in flexibly jointed steel frames. The connection characteristics are assumed to depend on the component behavior of the tension zone, the compression zone, and the shear zone. The column flange and end plate with each bolt row in the tension zone are considered as a series of T-stub assembly with the effective length recommended by the Eurocode 3. Based on the beam and yield-line theory, the elastoplastic force-deformation relationship for each T-stub assembly is derived. With the consideration of the deformation of column web in compression and shear zone, the connection rotation Φ under bending moment M is evaluated accordingly. The proposed analytical model is compared with some experimental results of extended and flush end-plate connections, and the feasibility and validation of the proposed model are demonstrated.
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