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Steel and Composite Structures Volume 27, Number 6, June25 2018 , pages 661-674 DOI: https://doi.org/10.12989/scs.2018.27.6.661 |
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Uni-axial behavior of energy dissipative steel cushions |
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Hasan Ozkaynak, Arastoo Khajehdehi, Ahmet Gullu, Faraz Azizisales, Ercan Yuksel and Faruk Karadogan
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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. | ||
| Key Words | ||
| steel cushion; dissipation; energy dissipater; fuse element; hysteretic energy | ||
| Address | ||
| (1) Hasan Ozkaynak: Beykent University, Department of Civil Engineering, Maslak, Istanbul, Turkey; (2) Arastoo Khajehdehi, Ahmet Gullu, Faraz Azizisales: Istanbul Technical University, Institute for Science and Technology, Maslak, Istanbul, Turkey; (3) Ercan Yuksel: Istanbul Technical University, Faculty of Civil Engineering, 34469, Maslak, Istanbul, Turkey; (4) Faruk Karadogan: Isik University, Department of Civil Engineering, Sile, Istanbul, Turkey. | ||