RC Wall Plastic Hinge Out-of-Plane Buckling: Analysis Using the Nonlinear Beam-Truss Model
Publication: Journal of Structural Engineering
Volume 146, Issue 12
Abstract
The beam-truss model (BTM), developed for the nonlinear cyclic analysis of reinforced concrete components including softening, is extended to compute the out-of-plane buckling observed in plastic hinges of various slender structural walls. This is achieved by using fiber-section displacement-based elements with PDelta geometric transformation and diagonal truss-elements with Corotational transformation. The BTM is enhanced by considering strain penetration at the base of the walls. This paper discusses the BTM for three test specimens that exhibited out-of-plane buckling and whose response softened as a result of this phenomenon. The test specimens’ unsupported height-to-wall thickness ratio ranged between 10 and 25. Using the same calibration of the modeling parameters for the development of the three models, the BTM is validated by comparing measured and computed lateral force−displacement responses, out-of-plane displacements, and local strain responses. The BTM accurately computes the force−displacement responses as well as out-of-plane displacements of the test specimens and the buckling behavior.
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Data Availability Statement
Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work was fund by the “Consejo Nacional de Ciencia y Tecnologia” (CONACYT), the University of California Institute for Mexico and the United States (UCMEXUS), and the program “Becas Fulbright-Garcia Robles” (COMEXUS).
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Published In
Journal of Structural Engineering
Volume 146 • Issue 12 • December 2020
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© 2020 American Society of Civil Engineers.
History
Received: Nov 9, 2019
Accepted: Jun 19, 2020
Published online: Sep 23, 2020
Published in print: Dec 1, 2020
Discussion open until: Feb 23, 2021
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