H. Hosseinnejad - Department of Civil Engineering, Maragheh Branch, Islamic Azad University, Maragheh, Iran
M. A. Lotfollahi -Yaghin - Civil Engineering Faculty, University of Tabriz, Tabriz, Iran
Y. Hosseinzadeh - Civil Engineering Faculty, University of Tabriz, Tabriz, Iran
A. Maleki - Department of Civil Engineering, Maragheh Branch, Islamic Azad University, Maragheh, Iran

Shape memory alloys (SMAs) are functional materials that feature shape memory effects and super-elasticity. These features have made SMAs more efficient materials for reinforcement and improvement of the stability of a structure. The present study aims to investigate the effect of the local post-tensioning with SMAs to improve the load-carrying capacity of tapered steel industrial sheds. For this purpose, ABAQUS software was used to predict the flexural strength and load-bearing capacity of the alloys. The effects of the diameter and the post-tension force applied to the SMA tendons were investigated. The results showed that the external post-tensioning using SMA tendons is an effective way to increase the load-carrying capacity of industrial sheds. The steel and SMA tendons caused a ۳۶% and ۶۰% increase, respectively in the maximum load capacity of the frame. The performance of the sheds was improved by local post-tensioning, which can reduce the weight of the structures.

Industrial shed, Tapered, External post-tensioning, Shape memory alloys, Load-carrying capacity