Dang, CN.; Floyd, RW.; Hale, WM.; Martí Vargas, JR. (2018). Prediction of development length from free-end slip in pretensioned concrete members. Magazine of Concrete Research. 70(14):714-725. https://doi.org/10.1680/jmacr.17.00334
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/126167
Title:
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Prediction of development length from free-end slip in pretensioned concrete members
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Author:
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Dang, Canh N.
Floyd, Royce W.
Hale, W. Micah
Martí Vargas, José Rocío
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería de la Construcción y de Proyectos de Ingeniería Civil - Departament d'Enginyeria de la Construcció i de Projectes d'Enginyeria Civil
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Issued date:
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Abstract:
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[EN] Development length of prestressing strands is a significant parameter in the design of pretensioned concrete members.
The adequacy of the code equations used to predict the development length needs to be verified when ...[+]
[EN] Development length of prestressing strands is a significant parameter in the design of pretensioned concrete members.
The adequacy of the code equations used to predict the development length needs to be verified when a new
material or design parameter is introduced for precast, prestressed concrete applications. This study develops a simple
and reliable technique to quantify the development length based on the premise of the slip theory, which proposes
the free-end slip (FES) as an indicator of the development length. Twenty-five pretensioned concrete beams were cast
with 15 mm diameter strands. FES was measured at both beam ends at prestress transfer. Development length was
determined by performing bending tests at different embedment lengths. The experimental results were synthesised
to revise the slip theory. The applicability of the revised-slip theory was validated by collected experimental data
of pretensioned concrete members using various types of concrete, strand diameters and release techniques.
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Subjects:
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Beams & girders
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Bond
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Prestressed concrete
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Magazine of Concrete Research. (issn:
0024-9831
)
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DOI:
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10.1680/jmacr.17.00334
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Publisher:
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Thomas Telford Ltd.
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Publisher version:
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https://doi.org/10.1680/jmacr.17.00334
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Thanks:
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The authors would like to acknowledge the financial and technical support of the Arkansas State Highway and Transportation Department (AHTD), Mack-Blackwell Rural Transportation Center (MBTC) and Ton Duc Thang University. ...[+]
The authors would like to acknowledge the financial and technical support of the Arkansas State Highway and Transportation Department (AHTD), Mack-Blackwell Rural Transportation Center (MBTC) and Ton Duc Thang University. The contents of this paper reflect the views of the authors, and do not necessarily reflect the views of the research sponsors.
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Type:
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Artículo
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