Title:
Shear Strength of Flanged Squat Walls with 690 MPa Reinforcing Bars
Author(s):
Ju-Hyung Kim and Hong-Gun Park
Publication:
Structural Journal
Volume:
119
Issue:
2
Appears on pages(s):
209-220
Keywords:
cyclic loading tests; flanged walls; high-strength reinforcing bar; shear strength; squat walls
DOI:
10.14359/51734142
Date:
3/1/2022
Abstract:
Six squat walls were tested under cyclic loading to investigate the effects of flanges and high-strength reinforcing bars on the shear strength. Test parameters were the grade of reinforcing bar, wall geometry, and reinforcement ratio. The strength and deformation capacity of the specimens with high-strength reinforcing bar were comparable to that of normal-strength reinforcing bar specimen with identical design strength. The shear strength of flanged walls was two times the nominal shear strength of ACI 318-19, regardless of the web reinforcement ratios. The test results showed that the vertical reinforcing bar and concrete in the flanges contributed to the shear strength. Shear strength was calculated using a multiple shear panel model, which included the effect of flanges. The results showed that the strength contribution of the flanges accounted for 40% of the overall shear strength. This result indicates that for the economical design of squat walls, the effect of flanges can be considered.