Peak Shear Strength of Flanged Reinforced Concrete Squat Walls
Publication: Journal of Structural Engineering
Volume 146, Issue 4
Abstract
Flanged RC squat walls, defined by a shear span ratio less than two, are widely used in conventional buildings and nuclear facilities. However, due to the mechanical defects and insufficient parameters included, equations available in building codes and the literature exhibit significant scatter in predicting the peak shear strength of such walls. In this paper, a modified strut-and-tie model, including effects of flanges, was developed to account for the force-resisting mechanism in flanged RC squat walls and to derive the function form of the peak shear strength equation. Nonlinear regression was conducted to obtain the magnitude of unknown coefficients in the function form using a database containing 119 walls. The finalized equation was simplified and evaluated with models available in the literature. Results revealed that the proposed equation performs much better than current methods and provides guidance for the design of flanged RC squat walls.
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Acknowledgments
The work presented in this paper was supported by the Natural Science Foundation of Zhejiang Province, China (Grant No. LQ19E080008); the National Science Foundation of China (Grant No. 51808397), and the Shanghai Pujiang Program (Grant No. 18PJ1410100).
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Published In
Journal of Structural Engineering
Volume 146 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Nov 12, 2018
Accepted: Sep 10, 2019
Published online: Feb 4, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 4, 2020
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