English：

Due to the special nature of the safety level of nuclear engineering construction, self-expandingmechanical anchor bolts for nuclear power engineering have been developed, for anchoring andconnecting medium and heavy structural and non-structural components in cracked and non-crackedconcrete. A digital detection system for self-expanding mechanical anchor bolts has been established. Bydigitally measuring the installation torque at 100%, the installation accuracy of the anchor bolt’sexpanding sleeve is ensured, avoiding installation quality issues caused by human factors. Through digitaldetection of the pull-out bearing capacity, the installation quality is guaranteed to be reliable. Throughmultiple experimental studies and engineering practices, it is known that this self-expanding mechanicalanchor bolt achieves high bearing capacity connections, through mechanical locking keys, and has goodand stable mechanical, anti-corrosion, seismic, anti-fatigue, and anti-impact performance. It is also easyto install, has good durability, and high reliability, and is suitable for use in the fixation and connectionof large-scale projects, such as nuclear power, bridges, tunnels, and highways.