Supplementary reinforcement for anchor bolts according to EN 1992-4

The thesis was written for A-Insinöörit Suunnittelu Oy. The purpose of the work was to find better and more effective solutions for anchor bolts usage, study phenomena of the supplementary reinforcement, and study how supplementary reinforcement can affect headed and post-installed anchor bolts. The theoretical part describes in general the types of anchor bolts that are applicable for this work, failure modes of fasteners, phenomena of supplementary reinforcement, and what conditions must be observed for its usage. This work is based on Eurocode 2. Design of concrete structures. Part 4: Design of fastenings for use in concrete (EN 1992-4). A big part of this work is analyze of the calculations for supplementary reinforcement and studies of the impact of each parameter of reinforcement on the design resistance of supplementary reinforcement along with requirements from the standard EN 1992-4. The design resistance of a fastener and of a supplementary reinforcement was compared. The supplementary reinforcement can be useful in the combination with anchor bolts and can improve the strength of anchor bolts in case of concrete cone failure and concrete edge failure. However, supplementary reinforcement is not always the solution for increasing the load-carrying capacity of an anchor