Wedging Model of Compressive Membrane Action for a Conical-Fan Failure Mode in a Reinforced Concrete Plate with In-Plane Restraint
Publication: Journal of Structural Engineering
Volume 150, Issue 11
Abstract
The paper introduces a new model of compressive membrane action (CMA) for a conical fan failure mechanism around a patch load in a reinforced concrete plate with in-plane restraint. The new model is based on a concept of 3-dimensional wedging and it is fundamentally different from conventional arching models of CMA. The new model accounts for the effects of CMA on the bending resistance at yield lines and the complementary wedging effect of compressive membrane forces at the yield lines, considering the interaction between the radial and tangential forces acting on the wedgelike segments in a restrained fan. The model was developed in the context of an investigation of the strength of fiber reinforced shotcrete (FRS) tunnel linings, but it is readily adaptable for conventional reinforced concrete plates and slabs. The paper compares the wedging model results (predicted load-deflection curves) with field test results for FRS tunnel linings. It is shown that the wedging model provides a good approximation to the available test results.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Information
Published In
Journal of Structural Engineering
Volume 150 • Issue 11 • November 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Oct 17, 2023
Accepted: Jun 11, 2024
Published online: Sep 11, 2024
Published in print: Nov 1, 2024
Discussion open until: Feb 11, 2025
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