Research on Application of Self-locking Anchor Rods in the Improvement of wind turbine generator tower foundation

This article provides a solution to replace the upper equipment while retaining the foundation during the technical transformation of wind power generation. Due to load changes and the damage and defects of the original foundation ring, the connection method to connect the new wind turbine tower and the existing foundation should be redesigned, and the original wind turbine generator tower foundation should be reinforced accordingly. This paper introduces the scheme of using common self-locking anchor rod and prestressed self-locking anchor rod to connect the upper tower and foundation, and compares the advantages and disadvantages of the two schemes. Two schemes for increasing the foundation and strengthening the foundation with prestressed rock bolts are proposed and compared. Both the ordinary bolt scheme and the prestressed bolt can meet the mechanical properties, but the ordinary bolt construction is convenient and economical; the foundation reinforcement using the prestressed rock anchor scheme is more economical and environmentally friendly.