Abstract: The improvement of wind turbine foundation bearing capacity plays an important role in ensuring the safe operation of wind turbines and wind power efficiency. The pull-out test of the anchoring effect between the foundation steel ring and concrete was carried out to study the mechanical properties and failure characteristics of the foundation steel ring anchorage under different combinations of end plates and transverse ribs. The test results show that for the stress state of the concrete of the wind turbine foundation, the transverse rib structure is better than the end plate structure. The end plate and transverse rib structure are set in the wind turbine foundation at the same time, which can give full play to the protective effect of the end plate structure and significantly improve the ultimate bearing capacity of the wind turbine foundation. The research results can provide a reference for the design and construction of relevant wind turbine foundation project.

Key words: wind turbine foundation, foundation ring, end plate, transverse rib, pull-out test