2010•Journal of Beijing University of TechnologyRequires access

Seismic Behavior Analysis of Steel-concrete Composite Frame Structure System

Bing Guo

Open publisher page 4 citations

Abstract

To investigate the seismic behavior of the steel-concrete composite frame structure system,a 4 polyline plastic hinge model of the composite beam is suggested for the elastic-plastic analysis of the composite frame.And the analytic models of CB-CFST,SB-CFST,CB-ETRC,SB-ETRC and RC frame structures are separately created.Then the mode analysis,spectrum and the elastic time history analysis under frequent earthquake,elastic-plastic analysis under server earthquake of these structures are carried out.Results illustrate that compared with SB-CFST,the integral stiffness of CB-CFST is enhanced;natural periods are shortened;displacement responses are decreased overall.Compared with the CB-RC frame,under rare earthquakes,RC columns can not satisfy the demand ofno collapsing with strong earthquake.And after increasing dimensions and reinforcement ratios of columns,the plastic hinge is also found at the end of columns.

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What this paper is about

To investigate the seismic behavior of the steel-concrete composite frame structure system,a 4 polyline plastic hinge model of the composite beam is suggested for the elastic-plastic analysis of the composite frame.And the analytic models of CB-CFST,SB-CFST,CB-ETRC,SB-ETRC and RC frame structures are separately created.Then the mode analysis,spectrum and the elastic time history analysis under frequent earthquake,elastic-plastic analysis under server earthquake of these structures are carried out.Results illustrate that compared with SB-CFST,the integral stiffness of CB-CFST is enhanced;natural periods are shortened;displacement responses are decreased overall.Compared with the CB-RC frame,under rare earthquakes,RC columns can not satisfy the demand ofno collapsing with strong earthquake.And after increasing dimensions and reinforcement ratios of columns,the plastic hinge is also found at the end of columns.

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Available abstract

To investigate the seismic behavior of the steel-concrete composite frame structure system,a 4 polyline plastic hinge model of the composite beam is suggested for the elastic-plastic analysis of the composite frame.And the analytic models of CB-CFST,SB-CFST,CB-ETRC,SB-ETRC and RC frame structures are separately created.Then the mode analysis,spectrum and the elastic time history analysis under frequent earthquake,elastic-plastic analysis under server earthquake of these structures are carried out.Results illustrate that compared with SB-CFST,the integral stiffness of CB-CFST is enhanced;natural periods are shortened;displacement responses are decreased overall.Compared with the CB-RC frame,under rare earthquakes,RC columns can not satisfy the demand ofno collapsing with strong earthquake.And after increasing dimensions and reinforcement ratios of columns,the plastic hinge is also found at the end of columns.

Key concepts: Structural engineering, Hinge, Composite number, Plastic hinge, Frame (networking), Displacement (psychology), Stiffness, Reinforcement

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