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Accession Number
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PB2013-102355
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Title
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Behavior of Pile to Bent Cap Connections Subjected to Seismic Forces.
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Publication Date
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Jun 2012
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Media Count
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294p
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Personal Author
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A. Larosche B. Mustain D. Rizos J. Caicedo M. ElBatanouny P. Ziehl T. Mays
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Abstract
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Currently the South Carolina Department of Transportation employs a detail of a plain pile embedment for the connection between precast prestressed piles and cast-in-place bent caps. This connection has proved beneficial in terms of time and cost associated with construction, and has been previously investigated albeit in a limited capacity. As such an improved understanding of the behavior of the connection is warranted. The University of South Carolina has concluded a research program focusing on the behavior and design of this specific connection detail. South Carolina contains the highest level of seismicity along the east coast of the United States. The state relies heavily on the transportation infrastructure and a high level of confidence in bridge design practices is essential. This research began with a focus on the evaluation and understanding of the current detail employed in the connection between precast prestressed piles and cast-in-place bent caps. The work continues with the investigation of parameters that affect this connection detail and proceeds with potential improvements to the detail. The connections are evaluated in terms of moment capacity, ductility, and damage mechanisms. Findings indicate that when constructed with an appropriate embedment length the connection at interior portions of a bent cap is able to achieve desirable response. Connections at exterior portions of bent caps are also shown to respond desirably given sufficient pile embedment depth along with appropriate detailing of the bent cap.
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Keywords
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Bent cap
Bridges(Structures)
Construction
Durability
Fabrication
Joints
Loads(Forces)
Pile foundations
Prestressed concrete
Research program
Seismic design
South Carolina
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Source Agency
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Federal Highway Administration
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NTIS Subject Category
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50A - Highway Engineering
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Corporate Author
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South Carolina Univ., Columbia. Dept. of Civil and Environmental Engineering.
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Document Type
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Technical report
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Title Note
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Final rept.
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NTIS Issue Number
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1304
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Contract Number
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SPR-672
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