International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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Seismic Behavior Investigation on Blind Bolted CFST Frames with Precast SCWPs

  • Wang, Jingfeng (School of Civil Engineering, Hefei University of Technology) ;
  • Shen, Qihan (School of Civil Engineering, Hefei University of Technology) ;
  • Li, Beibei (School of Civil Engineering, Hefei University of Technology)
  • Received : 2017.08.02
  • Accepted : 2018.04.17
  • Published : 2018.12.31
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Abstract

To explore seismic behavior of blind bolted concrete-filled steel tube (CFST) frames infilled with precast sandwich composite wall panels (SCWPs), a series tests of blind bolted square CFST frames with precast SCWPs under lateral low-cyclic loading were conducted. The influence of the type of wall concrete, wall-to-frame connection and steel brace setting, etc. on the hysteretic curves and failure modes of the type of composite structure was investigated. The seismic behavior of the blind bolted CFST frames with precast SCWPs was evaluated in terms of lateral load-displacement relation curves, strength and stiffness degradation, crack patterns of SCWPs, energy dissipation capacity and ductility. Then, a finite element (FE) analysis modeling using ABAQUS software was developed in considering the nonlinear material properties and complex components interaction. Comparison indicated that the FE analytical results coincided well with the test results. Both the experimental and numerical results indicated that setting the external precast SCWPs could heighten the load carrying capacities and rigidities of the blind bolted CFST frames by using reasonable connectors between frame and SCWPs. These experimental studies and FE analysis would enable improvement in the practical design of the SCWPs in fabricated CFST structure buildings.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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