抄録
Post-installed adhesive anchor bolts are commonly used on all types projects, from standard buildings to bridges and nuclear power plants. They are exposed to varying and diverse environmental conditions which are significant successfully to make connections to concrete structures for many years. With the failure of adhesive anchors in the Boston I-90 Tunnel Project, the use of these types of anchors has been called into question in America. On the other hand, also in Japan, a section of the SASAGO tunnel's suspended concrete ceiling with adhesive anchor bolts became detached from the tunnel roof and fell onto the vehicles, 2012. In order to maintain the safety and reliability of concrete structures such as buildings or bridges on higher level over a long period time, we developed a new non-destructive inspection system of adhesive anchor bolts based on hammering tests using AE (acoustic emission) sensor. By adjusting the amount of resin of adhesive anchors, the model bolts with poor construction quality were made on concrete blocks and finite element analysis was carried out to evaluate performance of this inspection system.
