Steel and Composite Structures

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Uni-axial behavior of energy dissipative steel cushions

  • Ozkaynak, Hasan (Beykent University, Department of Civil Engineering) ;
  • Khajehdehi, Arastoo (Istanbul Technical University, Institute for Science and Technology) ;
  • Gullu, Ahmet (Istanbul Technical University, Institute for Science and Technology) ;
  • Azizisales, Faraz (Istanbul Technical University, Institute for Science and Technology) ;
  • Yuksel, Ercan (Istanbul Technical University, Faculty of Civil Engineering) ;
  • Karadogan, Faruk (Isik University, Department of Civil Engineering)
  • Received : 2016.07.11
  • Accepted : 2018.05.10
  • Published : 2018.06.25
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Abstract

Seismic excitations may impart a significant amount of energy into structures. Modern structural design attitudes tend to absorb some part of this energy through special dissipaters instead of heavy plastic deformations on the structural members. Different types of dissipater have been generated and utilized in various types of structures in last few decades. The expected earthquake damage is mainly concentrated on these devices and they may be replaced after earthquakes. In this study, a low-cost device called energy dissipative steel cushion (EDSC) made of flat mild steel was developed and tested in the Structural and Earthquake Engineering Laboratory (STEELab) of Istanbul Technical University (ITU). The monotonic and cyclic tests of EDSC were performed in transversal and longitudinal directions discretely. Very large deformation capability and stable hysteretic behavior are some response properties observed from the tests. Load vs. displacement relations, hysteretic energy dissipation properties as well as the closed form equations to predict the behavior parameters are presented in this paper.

Keywords

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