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Premium Seismic performance of steel braced frames with self‐centering buckling‐restrained brace utilizing superelastic shape memory alloys
Author(s)
Nazarimofrad Ebrahim,
Shokrgozar Ali
Publication year2019
Publication title
the structural design of tall and special buildings
Resource typeJournals
PublisherWiley-Blackwell
Summary Buckling‐restrained braced frame (BRB) is one of the newest seismic force‐resisting systems used in buildings. However, one of the requirements for designing a structure is to provide a ductility behavior of structures to dissipate earthquake energy and to avoid residual drifts. These days, self‐centering seismic lateral force‐resisting systems have drawn attention due to their potentials to solve the above mentioned issues. On the other hand, shape memory alloys (SMAs) are characterized by unique superelastic behavior, which enables the material to recover its original shape after experiencing large deformations. The goal of this study is to assess BRBs whose ductility are improved by utilizing SMA. Nonlinear time history and incremental dynamic analysis techniques are applied to investigate the behavior of the two frames with different stories (four and eight stories) under different ground motion records. The results showed that utilizing BRB made of hybrid steel and SMA resulted in increasing ductility of the structure and decreasing residual displacements of the structures.
Subject(s)brace , braced frame , buckling , composite material , engineering , frame (networking) , martensite , materials science , mechanical engineering , microstructure , pseudoelasticity , shape memory alloy , structural engineering
Language(s)English
SCImago Journal Rank0.895
H-Index43
eISSN1541-7808
pISSN1541-7794
DOI10.1002/tal.1666

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