The Effects of P-Delta and Semi-Rigid Connections on Response Behavior of Inelastic Steel Frames Subjected to Cyclic and Seismic Loadings

by F. Y. Cheng, Univ of Missouri-Rolla, Rolla, MO, USA,
D. S. Juang, Univ of Missouri-Rolla, Rolla, MO, USA,

Document Type: Proceeding Paper

Part of: Stability Under Seismic Loading


A numerical method is presented for analyzing semi-rigid connected steel frames subjected to various time-dependent excitations with consideration of damping, nonlinear material behavior for members and connections, and geometric nonlinearity. The material nonlinearity is modeled as bilinear. The external excitations may be cyclic loads or seismic motions. The structural formulation is based on the displacement method and the lumped mass model. Numerical examples are provided that demonstrate the significant effects of various considerations on the dynamic response.

Subject Headings: Steel frames | Seismic loads | Material properties | Connections (structural) | Structural behavior | Inelasticity | Rigid frames | Seismic tests

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