Title:
Load-Deflection Behavior of Cast-in-Place and Retrofit Concrete Anchors
Author(s):
R. A. Cook
Publication:
Structural Journal
Volume:
89
Issue:
6
Appears on pages(s):
639-649
Keywords:
anchors (fasteners); anchor bolts; connections; ductility; embedment; load-deflection curves; loads (forces); loads (forces); static loads; Structural Research
DOI:
10.14359/4134
Date:
11/1/1992
Abstract:
Reports on a study investigating the design and behavior of single cast-in- place and retrofit concrete anchors under static, fatigue, and impact tensile loads. The embedment lengths used in this study were designed to produce ductile behavior, which was defined as steel failure of the anchor shank. Anchor types tested were cast-in-place anchor bolts and embeds (headed anchors with an integral female-threaded coupling at the concrete surface) and four types of retrofit anchors: (a) adhesive (epoxy, polyester, and vinylester); (b) grouted; (c) expansion (torque-controlled); and (d) undercut. The study involved 178 tests of 24 products which compared the design, load- deflection behavior, and mode of failure of retrofit concrete anchors with that of cast-in-place anchors under different tensile loading conditions. Behavior modes of anchors were identified under static, fatigue, and impact tensile loads, and anchor types were categorized according to these behavior modes.