Title

Seismic Performance Of Precast Columns With Mechanically Spliced Column-Footing Connections

Keywords

Accelerated bridge construction; Cyclic loading; Ductility; Emulative; Grout sleeve; Mechanical coupler; Plastic hinge

Abstract

This paper presents the results from a large-scale experimental study that was conducted at the University of Nevada, Reno, NV. Five half-scale bridge column models were constructed and tested under reversed slow cyclic loading. The study focused on developing four new moment connections at column-footing joints for accelerated bridge construction in regions of high seismicity. The new connections were employed in precast columns, each using mechanical splices to create connectivity with reinforcing bars in a cast-in-place footing. Two different mechanical splices were studied: an upset headed coupler and a grout-filled sleeve coupler. Along with the splice type, the location of couplers within the plastic hinge zone was also a test variable. All precast models were designed with the intent to emulate conventional cast-in-place construction and, thus, were compared with a conventional cast-inplace test model. Results indicate the behavior of these new connections was similar to that of conventional cast-in-place construction with respect to key response parameters, although the plastic hinge mechanism could be significantly affected by the couplers. © 2014, American Concrete Institute.

Publication Date

1-1-2014

Publication Title

ACI Structural Journal

Volume

111

Issue

3

Number of Pages

639-650

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.14359/51686624

Socpus ID

84903946608 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84903946608

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