Investigating the performance of high-strength steel shear wall with opening and pre-crack Community Verified icon

Abstract

The use of steel shear wall in engineering construction, including high-rise building projects that bear several sides, is very interesting and practical. Since the steel shear wall with opening may be damaged by pre-cracks and cause damage to the shear wall, in this study, the effect of pre-crack and opening in the three-span and one-span frame with steel shear wall has been evaluated. In this study, 48 samples have been studied using finite element method and Abaqus software. Separate and lateral loading has been applied to the samples and pre-crack positions, pre-crack length and shear steel sheet material have been investigated The results of this study showed that the numerical model made for the shear wall provides reliable answers compared to the laboratory model. In the studied shear walls, the parameter of crack length and crack position has a great effect on the ductility capacity, while it has little effect on the hardness and strength index. The most critical pre-crack modes in the horizontal position, located at the top or bottom corner of the frame, have had a great impact on the lateral behavior and reduced ductility by 60% and wall strength by 32%. On the other hand, by changing the materials of the shear wall steel sheet from LYP steel to St37 and St52, the ultimate strength and hardness have increased by 3.63 and 1.45 times, respectively, and the ductility has decreased by 30% .