INFLUENCE OF HIGH TEMPERATURE HEATING ON PULL-OUT PROPERTIES OF MECHANICAL ANCHOR EMBEDDED IN CONCRETE

Abstract

Surface layer of concrete becomes the most heavily damaged part affected by high temperature heating when concrete structure is subjected to fire accident. In the surface layer of concrete structures, the anchor bolts are used for fixing the equipment or the seismic strengthening elements. This paper reports on the investigation into the influence of high temperature heating up to 1000℃ on pull-out properties of two types of mechanical anchor embedded in concrete. Relationship between the pull-out strength of anchors and the fracture energy was also investigated.