Steel and Composite Structures

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Eccentric compressive behavior of novel composite walls with T-section

  • Qin, Ying (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University) ;
  • Chen, Xin (School of Civil Engineering, Southeast University) ;
  • Xi, Wang (School of Civil Engineering, Southeast University) ;
  • Zhu, Xingyu (School of Civil Engineering, Southeast University) ;
  • Chen, Yuanze (School of Civil Engineering, Southeast University)
  • Received : 2020.01.15
  • Accepted : 2020.05.11
  • Published : 2020.05.25
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Abstract

Double skin composite walls are alternatives to concrete walls to resist gravity load in structures. The composite action between steel faceplates and concrete core largely depends on the internal mechanical connectors. This paper investigates the structural behavior of novel composite wall system with T section and under combined compressive force and bending moment. The truss connectors are used to bond the steel faceplates to concrete core. Four short specimens were designed and tested under eccentric compression. The influences of the thickness of steel faceplates, the truss spacing, and the thickness of web wall were discussed based on the test results. The N-M interaction curves by AISC 360, Eurocode 4, and CECS 159 were compared with the test data. It was found that AISC 360 provided the most reasonable predictions.

Keywords

Acknowledgement

This work is sponsored by the Natural Science Foundation of Jiangsu Province (Grant No. BK20170685), and the National Key Research and Development Program of China (Grant No. 2017YFC0703802). The authors would like to thank the Zhejiang Southeast Space Frame Group Company Limited for the supply of test specimens, Jianhong Han in the steel research group for the help with test preparation, and Xiongliang Zhou, Weigang Chen, Yunfei He and Jianwei Ni for their assistance with the specimen fabrication.

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