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Abstract

Advancements in Civil Engineering & Technology

Tensile Behavior of Single Cast-in Anchors in Plastic Hinge Zones

  • Open or Close Jian Zhao* and Zhibin Lin

    Department of Civil and Environmental Engineering, Univ of Wisconsin, USA

    *Corresponding author: Jian Zhao, Associate Prof, Dept of Civil and Environmental Engineering, Univ of Wisconsin, Milwaukee, WI

Submission: July 25, 2018; Published: September 11, 2018

DOI: 10.31031/ACET.2018.02.000535

ISSN 2639-0574
Volume2 Issue2

Abstract

This paper presents two tests of ¾-in. diameter cast-in anchors embedded in the plastic hinge zone of reinforced concrete columns. Design codes, such as ACI 318-11, do not allow concrete anchors in concrete that could be substantially damaged during an earthquake unless special reinforcement is provided. Recent studies have concluded that key role of anchor reinforcement, in addition to carrying the forces from the anchors, is to protect concrete around the anchors from splitting, breaking out, and crushing. The anchor reinforcement in this study was designed according to the recommendation. The column specimens were subjected to quasi-static cyclic loading before the test anchors were loaded in tension. Ductile steel fracture was achieved in both test anchors despite cracks and concrete spalling occurred to the concrete within the plastic hinge zones.

CE Database Subject Headings: Cast-in anchors; Anchor reinforcement; Concrete anchor; Studs; Fastening to concrete; Reinforced concrete; Embedded connections; Seismic design

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