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Seismic resistance behavior of CFST frame structure

DU Guo-feng

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Abstract

In order to analyze the seismic behavior of tubular frame of concrete filled steel and popularize this type of structure in seismic areas,shaking table test and finite element analysis were carried out on an eightstory concrete filled steel tube(CFST) column frame model structure.The model responses of the largest earthquake force,story shear force,deformation and strain under different earthquake waves(El-Centro wave,Tianjin wave and Wuhan artificial wave) were measured.The experimental data agree well with those of ANSYS.The deformation of this structure presents a shear-flexural type,and the low mode has a great influence on the displacement of structure,while the high mode plays a leading role with the increasing acceleration of the peak value of earthquake wave.It is indicated that the CFST column frame has a good seismic behavior,and ANSYS8.1 can simulate the seismic responses of this structure well.

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What this paper is about

In order to analyze the seismic behavior of tubular frame of concrete filled steel and popularize this type of structure in seismic areas,shaking table test and finite element analysis were carried out on an eightstory concrete filled steel tube(CFST) column frame model structure.The model responses of the largest earthquake force,story shear force,deformation and strain under different earthquake waves(El-Centro wave,Tianjin wave and Wuhan artificial wave) were measured.The experimental data agree well with those of ANSYS.The deformation of this structure presents a shear-flexural type,and the low mode has a great influence on the displacement of structure,while the high mode plays a leading role with the increasing acceleration of the peak value of earthquake wave.It is indicated that the CFST column frame has a good seismic behavior,and ANSYS8.1 can simulate the seismic responses of this structure well.

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Available abstract

In order to analyze the seismic behavior of tubular frame of concrete filled steel and popularize this type of structure in seismic areas,shaking table test and finite element analysis were carried out on an eightstory concrete filled steel tube(CFST) column frame model structure.The model responses of the largest earthquake force,story shear force,deformation and strain under different earthquake waves(El-Centro wave,Tianjin wave and Wuhan artificial wave) were measured.The experimental data agree well with those of ANSYS.The deformation of this structure presents a shear-flexural type,and the low mode has a great influence on the displacement of structure,while the high mode plays a leading role with the increasing acceleration of the peak value of earthquake wave.It is indicated that the CFST column frame has a good seismic behavior,and ANSYS8.1 can simulate the seismic responses of this structure well.

Key concepts: Earthquake shaking table, Structural engineering, Seismic wave, Displacement (psychology), Deformation (meteorology), Shear (geology), Finite element method, Geology

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