Hysteresis behavior analysis of the mixed structures with concrete-filled steel tubular frame and RC shear wall

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (15) : 41-47.

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Hysteresis behavior analysis of the mixed structures with concrete-filled steel tubular frame and RC shear wall

WANG Wen-da WEI Guo-qiang LI Hua-wei

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Abstract

In order to study the seismic performance of the reinforced concrete (RC) shear walls with concrete-filled steel tubular (CFST) columns, the Open System for Earthquake Engineering Simulation (OpenSees), a open-source nonlinear analysis platform, was used to simulate the performance of this type of composite shear wall under low cyclic loading with nonlinear beam-column fiber model based on the other researchers’ experiments about the RC shear walls framed with CFST columns and RC shear walls, respectively. The shear force of fiber sections was simulated by defining the nonlinear shear restoring force in section level. The results obtained from the calculation are in good agreement with those from the experiment. The results show that the fiber modeling method of considering the shear effect could predict the maximum shear force, pinch effect and stiffness degradation of the composite shear walls effectively, and it can also save a lot of computing time because of its high arithmetic efficiency.

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concrete filled steel tubes(CFST) / composite shear wall / fiber model / OpenSees / hysteretic behavior

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WANG Wen-da WEI Guo-qiang LI Hua-wei. Hysteresis behavior analysis of the mixed structures with concrete-filled steel tubular frame and RC shear wall[J]. Journal of Vibration and Shock, 2013, 32(15): 41-47