Dynamic performance of a superelastic column–base connection

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Abstract

The present paper provides an innovative insight into the design of column–base connections, for steel moment resisting frames, with superelastic shape-memory alloy cables. The proposed strategy is to prevent damage in these connections due to the rotation demands associated with seismic events, by using lateral restraining cables working in phase opposition. A simplified experimental prototype of the proposed connection is tested, under several loading scenarios, proving to be a versatile solution in terms of rotational stiffness, with significant energy dissipating features and re-centering capabilities. A series of numerical simulations are also performed, providing a clear evidence of the good seismic performance of the proposed superelastic connection in real-scale civil engineering structures.

Original languageEnglish
Article numbere2186
JournalSTRUCTURAL CONTROL AND HEALTH MONITORING
Volume25
Issue number7
DOIs
Publication statusPublished - 1 Jul 2018

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Keywords

  • column–base connection
  • free-damage
  • passive-control
  • shape-memory alloy
  • superelasticity

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