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Experimental study on seismic performances of steel framebent structures

  • Liang, Jiongfeng (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • Gu, Lian S. (Faculty of Civil & Architecture Engineering, East China Institute of Technology) ;
  • Hu, Ming H. (Faculty of Civil & Architecture Engineering, East China Institute of Technology)
  • Received : 2015.07.23
  • Accepted : 2016.02.29
  • Published : 2016.05.25

Abstract

To study seismic performance of steel frame-bent structure, one specimen with one-tenth scale, three-bay, and five-story was tested under reversed cyclic lateral load. The entire loading process and failure mode were observed, and the seismic performance indexes including hysteretic loops, skeleton curve, ductility, load bearing capacity, drift ratio, energy dissipation capacity and stiffness degradation were analyzed. The results show that the steel frame-bent structure has good seismic performance. And the ductility and the energy dissipation capacity were good, the hysteresis loops were in spindle shape, which shape were full and had larger area. The ultimate elastic-plastic drift ratio is larger than the limit value specified by seismic code, showing the high capacity of collapse resistance. It can be helpful to design this kind of structure in high-risk seismic zone.

Keywords

steel;frame-bent structure;cyclic lateral load;seismic performance;ductility

Acknowledgement

Supported by : Chinese National Natural Science Foundation

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