Stability Analysis on Overturning Resistance of Cone-Shaped Foundations for Mountain Wind Turbines

LI Shanshan; XING Guoqi

doi:10.13204/j.gyjzG20120701

Volume 52 Issue 2

Feb. 2022

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LI Shanshan, XING Guoqi. Stability Analysis on Overturning Resistance of Cone-Shaped Foundations for Mountain Wind Turbines[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 108-114. doi: 10.13204/j.gyjzG20120701

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Stability Analysis on Overturning Resistance of Cone-Shaped Foundations for Mountain Wind Turbines

doi: 10.13204/j.gyjzG20120701

Centre for Offshore Geotechnical Engineering, Weifang University, Weifang 261061, China

Received Date: 2020-12-07
Available Online: 2022-06-30
Publish Date: 2022-02-20

Abstract

Abstract

As wind turbines in mountain areas in outskirts of towns can avoid occupy a large amount of cultivated land for wind turbines on the plains and save a large number of high voltage transmission lines for wind turbines in the deserts, wind turbines in mountain areas in outskirts of towns have become effective ways to meet the electricity demand in urban energy-consumption. The cone-shaped foundation was an innovative type of the mountain wind turbine foundation, which outperformed the traditional wind turbine foundations in mountain areas in decreasing the usage of steel and concrete, in increasing the bearing capacity of foundations, and in reducing the excavation volumes of foundation and the bad effect of backfills on the environment. The calculation method of void areas between bottom surfaces of foundations and the rock masses was proposed. Combining numerical simulations with theoretical methods, the calculatioin method of void areas under bases was studied, and the influences of void ratios, mechanical indexes of weathered rock and geometric sizes of foundations on subgrade reaction, lateral displacement and the tilt rates of foundations were also disccused, respectively. Moreover, the effect of the rubber layer placed the sidewall of foundations on the rebound rates of unloaded foundations was analyzed. The stability of overturning resistance for the cone-shaped foundation was also constructed.
- mountain wind turbine,
- new type foundation,
- void under base,
- bsae reaction,
- stability of overturning resistance

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References(22)

References

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