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2024 | OriginalPaper | Chapter

7. SMA Concrete Confinement: Material Behavior and Modeling

Author : Bassem Andrawes

Published in: Shape Memory Alloys in Civil Engineering

Publisher: Springer Nature Switzerland

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Abstract

According to recent studies, concrete confinement with shape memory alloy (SMA) spirals is a potentially effective method for seismic retrofitting of reinforced concrete columns that are not flexural ductile. This method involves encircling concrete columns with prestrained SMA wires and heating the wires to activate the confining pressure. This chapter explains the SMA confined concrete’s experimental cyclic behavior and how a 3-D plasticity-based model for the material was created using the test findings. Based on experimental findings, a novel damage parameter, dilation rate function, and hardening/softening function are derived and verified. When compared to experimental findings, the suggested model can accurately replicate the axial and lateral stress-strain behaviors of NiTiNb-SMA confined concrete.

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previous chapter SMA Types for Non-mechanical Stressing Structural Applications

next chapter SMA Concrete Confinement: Column Applications

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Title: SMA Concrete Confinement: Material Behavior and Modeling
Author: Bassem Andrawes
Publisher: Springer Nature Switzerland
Book: Shape Memory Alloys in Civil Engineering
Print ISBN: 978-3-031-68000-7

Electronic ISBN: 978-3-031-68001-4

Copyright Year: 2024
DOI: https://doi.org/10.1007/978-3-031-68001-4_7

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