Predicting Shear Strength of Reinforced Concrete Knee Joints in Closing and Opening Actions
Publication: Journal of Structural Engineering
Volume 146, Issue 6
Abstract
The shear capacity of reinforced concrete knee joints in closing and opening actions are determined in this paper using the framework of the softened strut-and-tie model. The proposed model considers the closing and opening actions separately and takes into account the differences in joint behavior to accurately predict the joint capacity in closing and opening actions. The proposed model satisfies force equilibrium, strain compatibility, and the constitutive relationship of the cracked concrete. The predicted shear capacity values in both actions are compared with the experimental results of 59 knee joint specimens reported by various researchers. The gathered dataset consists of specimens with a wide range of geometric and reinforcement variations. The comparison showed an excellent correlation between the predicted shear capacity values and the available experimental results in both closing and opening actions of knee joints.
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Acknowledgments
The support of the Research Grants Council of Hong Kong under Grant No. 16209115 is gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 6 • June 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 19, 2019
Accepted: Nov 4, 2019
Published online: Mar 30, 2020
Published in print: Jun 1, 2020
Discussion open until: Aug 30, 2020
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