Steel and Composite Structures

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Developments of double skin composite walls using novel enhanced C-channel connectors

  • Yan, Jia-Bao (Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University) ;
  • Chen, An-Zhen (School of Civil Engineering, Tianjin University) ;
  • Wang, Tao (Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, CEA)
  • Received : 2019.08.14
  • Accepted : 2019.09.30
  • Published : 2019.12.25
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Abstract

The developments of double skin composite (DSC) walls with novel enhanced C-channel connectors (DSCW-EC) were reported. Followed axial compression tests on prototype walls were carried to evaluate structural performances of this novel DSC composite structures. The testing program consists of five specimens and focused on the layout of the novel enhanced C-channel (EC) connectors, which include the web direction of C-channels, steel-faceplate thickness, vertical and horizontal spacing of C-channels. Crushing in concrete core and buckling of steel faceplate were two main observed failed modes from the compression tests. However, elastic or plastic buckling of the steel faceplate varies with designed parameters in different specimens. The influences of those investigated parameters on axial compressive behaviors of DSCW-ECs were analyzed and discussed. Recommendations on the layout of novel EC connectors were then given based on these test results and discussions. This paper also developed analytical models for predictions on ultimate compressive resistance of DSCW-ECs. Validation against the reported test results show that the developed theoretical models predict well the ultimate compressive resistance of DSCW-ECs.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Peiyang Scholar Foundation

The authors would like to acknowledge the research grant 51608358 received from National Natural Science Foundation of China and Peiyang Scholar Foundation (grant no. 2019XRX-0026) under Reserved Academic Program from Tianjin University for the works reported herein. The authors gratefully express their gratitude for the financial supports.

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