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Nonlinear Analysis for the Aseismic Strength of Highrise Steel Frame With Semi-Rigid Joints by Pseudo-Elastic Approach

by Ching-Churn Chern, Natl Taiwan Univ, Taiwan,
Yuan-Fu Liao, Natl Taiwan Univ, Taiwan,



Document Type: Proceeding Paper

Part of: Seismic Engineering: Research and Practice

Abstract:

This paper suggests that the direct stiffness method is still useful in dealing with the nonlinear analysis for the aseismic capacity of highrise steel frame while the Pseudo-elastic approach is introduced. After the first plastic hinge appears, the steel frame will perform inelastically since steel members and connections shall behave in according with elasto-plastic model; however, the elasto-plastic equivalent strain energy relationship is emphasized so that the pseudo-elastic response could be transfered to the real inelastic response with seismic loads which can be amplified linearly from a given earthquake, the frame can be analyzed nonlinearly for its aseismic capacity and ductility rapidly.

Subject Headings: Steel frames | Steel columns | Steel structures | Structural analysis | Rigid frames | High-strength steel | Nonlinear analysis

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