Numerical Investigation of the In-Plane Performance of Masonry-Infilled RC Frames with Sliding Subpanels
Publication: Journal of Structural Engineering
Volume 143, Issue 2
Abstract
A number of construction techniques have been proposed to improve the seismic performance of infilled RC frames by increasing the strength and stiffness of the infill and/or the frame. The increase of the seismic capacity of infilled frames with these techniques can improve substantially their seismic performance as long as the demand does not exceed the capacity, but it can eventually lead to brittle failures once the capacity is exceeded. This study assesses numerically a new construction technique that introduces flexibility to the system to ensure its ductile behavior and minimal damage by splitting the infill in subportions and allowing the sliding along the horizontal joints connecting these subportions. A numerical model, validated with data from tests on the components of the proposed structural system and able to capture the interaction between them, has been developed to provide insight into the load-transfer mechanism that develops, and to optimize the proposed detailing. A parametric study investigates the sensitivity of the system to the design parameters, infill’s geometry, and material properties, so that design recommendations can be made.
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Acknowledgments
The research presented in this study is the result of an exchange program between the Department of Civil, Environmental, Architectural Engineering, and Mathematics of the University of Brescia (Italy) and the department of Civil, Structural, and Environmental Engineering of the University at Buffalo (United States). The program was supported by the “Structural Rehabilitation of Historical and Modern Buildings” Ph.D. program of the University of Brescia. The presented study has been developed in the research program financed by the “Presidenza del Consiglio dei Ministri Dipartimento della Protezione Civile”; the present publication, however, does not necessarily represent the department’s position and judgments.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 2 • February 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 4, 2015
Accepted: Jul 15, 2016
Published online: Sep 6, 2016
Published in print: Feb 1, 2017
Discussion open until: Feb 6, 2017
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