Numerical investigation of reinforced-concrete beam-column joints retrofitted using external superelastic shape memory alloy bars

AIMS Materials Science

卷:8

Yamen Ibrahim Elbahy¹  Maged A. Youssef¹  M. Meshaly² 

[1] 1. Civil and Environmental Engineering, Western University, London, Ontario, Canada, N6A 5B9;

[2] 2. Structural Engineering, Alexandria University, Alexandria, Egypt 3. Construction & Building Engineering, Arab Academy for Science, Technology & Maritime Transport (AASTMT), Alexandria, Egypt;

关键词: reinforced concrete;    shape memory alloys;    beam-column joints;    flexural behaviour;    retrofit;    finite element;    abaqus;    nonlinear behaviour;   

DOI  :  10.3934/matersci.2021043

来源: DOAJ

【 摘 要 】

The unique properties of Shape Memory Alloys (SMAs) have motivated researchers to use them as primary reinforcement in reinforced concrete (RC) structures. In this study, the applicability of using external unbonded SMA bars to retrofit RC beam-column joints (BCJs) is investigated. A three-dimensional finite element model, which simulates the suggested retrofitting technique, is first developed, and validated using ABAQUS software. The model is then further simplified and utilized to conduct a parametric study to investigate the behaviour of SMA retrofitted RC BCJs. Results of the parametric study are used to perform multiple linear regression analysis. Simple equations, which can be used to calculate the length and amount of SMA bars required to retrofit a RC BCJ, are then developed.

【 授权许可】

Unknown