Title: Chemically Bonded Anchors Subjected to Rapid Pullout Loading

Author(s): Kazunori Fujikake, Jun Nakayama, Hiroshi Sato, Sidney Mindess, and Takeshi Ishibashi

Publication: Materials Journal

Volume: 100

Issue: 3

Appears on pages(s): 246-252

Keywords: anchor; bond; cone; load; resistance

DOI: 10.14359/12626

Date: 5/1/2003

Abstract:
This study investigates the effect of loading rate on the ultimate pullout resistance of chemically bonded anchors subjected to rapid tensile load. It is well known that when the anchor bolt itself has enough strength, a chemically bonded anchor subjected to tensile loading usually exhibits a combined failure mode consisting of a shallow concrete cone with a bond failure below the cone. The effects of loading rate on the dynamic ultimate resistance under each failure mode of cone, bond, and combined cone and bond were experimentally examined. It was found that the dynamic ultimate pullout resistance increases with an increase of the loading rate. The dynamic ultimate resistance in the combined failure mode can be evaluated from the resistance of each mode contributing to the failure.