Optimized Analysis on Foundation Selection of Anchored Inverted Rib Foundations for Wind Turbines

In view of the disadvantages of high construction costs and unfriendly ecology environment for beam-slab raft foundations of wind turbines used in a certain wind farm in Liaoning Province, a novel anchored inverted rib foundation of wind turbines was proposed. Simultaneously, optimized analysis on roofs, ribbed beams, anchor bolts and other members of the foundation was conducted to solve problems such as the local damage at the connection between anchor bolts and foundations. The finite element software ABAQUS was used to verify feasibility of anchored inverted rib foundations for wind turbines by comparing mechanical performances and economy between inverted rib foundations and beam-slab raft foundations. The stress in concrete and rebars, displacement and inclination ratios of inverted rib foundations in extreme load conditions were simulated to determine the optimal selection scheme of anchor inverted rib foundations. The results indicated that against the engineering background of the wind farm, the scheme for anchor inverted rib foundation of 2 MW wind turbines with roofs, 8 ribbed beams and 24 external inclined and internal straight bolts was the optimal scheme, which had a good application prospect.