Research on Anchorage Performance of the Foundation Ring for Wind Turbines
Junjun Zhang, Hao Huang, Li Zhen, Linyuan Sun, Jiaxiang Yang, Kang Chen, Gaixin Chen
TL;DR
This paper studies how the foundation ring in wind turbines connects to the base and how different design factors affect its strength.
Contribution
The study introduces analytical expressions to estimate anchorage load-bearing capacity with low error rates compared to simulations.
Findings
The base flange contributes most to the moment capacity of the foundation ring.
The sidewall's contribution increases to 25–50% of the base flange's in later stages.
Analytical expressions have average errors of 8.2%, 9.6%, and 10.8% under different factors.
Abstract
The foundation ring (FR) is a steel component embedded within the concrete of a wind turbine foundation, playing a pivotal role in connecting the wind turbine tower to the foundation structure. In this paper, the FR–foundation connection is equivalent to the exposed foundation and the shallow foundation by analyzing the anchorage characteristics of the foundation ring. Based on the ABAQUS concrete damaged plasticity model, full-scale modeling of the wind turbine foundation is carried out. The influence of embedment depth, ring radius and base flange width of the foundation ring on moment capacity is simulated. Based on the observed stress distributions under ultimate loads, analytical expressions were proposed to estimate the variation law of anchorage load-bearing capacity in the ultimate load state. Compared with the numerical simulation, the average errors under different influencing…
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Taxonomy
TopicsGeotechnical Engineering and Soil Stabilization · Structural Load-Bearing Analysis · Structural Behavior of Reinforced Concrete