2014•Earthquake Engineering and Engineering DynamicsRequires access

Beam plastic rotation demand-based seismic analysis of steel-frame

LV Mengzho

Abstract

In the present study,a simple method of estimating the plastic rotation of beams was studied to realize performance-based design of buildings. Firstly,the composition of steel-frame story drift was introduced. Secondly,the expressions to estimate the plastic rotation of beams,addressing moment redistribution,plastic mechanism and strain-hardening effect of steel,were developed on the basis of strong column-weak beam and strong connectionweak connected member. Finally,a case study of 6-story plane steel-frame was carried out,which shows good agreement between nonlinear static analytic results by SAP2000 and the results obtained by the proposed method.

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Key concepts: Structural engineering, Steel frame, Beam (structure), Rotation (mathematics), Nonlinear system, Moment (physics), Frame (networking), Redistribution (election)