Analytical study on fracture mechanisms ruling resistant load of post‐installed adhesive anchor

Abstract

Abstract Experimental and FEM‐based analytical studies revealed the following aspects regarding post‐installed adhesive anchors set with epoxy or UHPFRC adhesive. The experimental and FEM results agreed in regard to maximum load, load–displacement curve, crack pattern, failure mode, and the location of failure. The load‐bearing mechanisms were discussed employing a model with a conic surface and an interface layer below it, which revealed the contribution of a conic surface to the maximum load was low, and that of an interface layer was very high. The mechanisms of combined failure with cone‐shaped fracture of concrete and interface slipping were also discussed.

Keywords

• adhesive anchor
• bond failure
• combined failure
• FEM analysis
• post‐installed anchor
• UHPFRC