Title:
Numerical Modeling of Squat Reinforced Concrete Shear Walls with High-Strength Materials
Author(s):
Robert D. Devine, Steven M. Barbachyn, Yahya C. Kurama, and Ashley P. Thrall
Publication:
Structural Journal
Volume:
121
Issue:
5
Appears on pages(s):
175-188
Keywords:
deep beams; high-strength concrete (HSC); high-strength steel reinforcement; low aspect ratio; nonlinear finite element modeling; shear design; shear walls; stocky walls
DOI:
10.14359/51740863
Date:
9/1/2024
Abstract:
This paper presents a numerical study that simulates the behavior
of squat reinforced concrete (RC) shear walls with high-strength
reinforcing steel and high-strength concrete. The finite element
models are critically evaluated based on previous experiments of
four deep-beam specimens and four squat shear-wall specimens
with varied material strengths, base moment-to-shear ratios,
and section shapes (rectangular and flanged). Monotonic lateral
load analyses provided reasonable predictions of the peak lateral
strength for squat walls tested under reversed-cyclic loading.
However, reversed-cyclic models were necessary for more accurate
predictions of the cyclic lateral load versus drift behavior,
including cracking, stiffness degradation, lateral load-resistance
mechanism, peak strength and corresponding drift, and energy
dissipation. Importantly, the model predictions for specimens using
high-strength materials were as good as or better than those using
normal-strength materials with the same base moment-to-shear
ratio. Thus, the use of higher-strength materials did not negatively
impact the ability of the models to predict wall behavior.
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