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A platform for research: civil engineering, architecture and urbanism
Research on sinking and leveling control technology of tripod bucket foundation in sand
Abstract High capacity wind-turbines are increasingly installed offshore and further away from the coast, where strong foundations are required, and their installation is challenging. The so-called multi-bucket foundation is a promising candidate to be used for such scenarios. However, the sinking control technology, which is commonly used to ease the installation, is not very mature. In this paper, a series of theoretical studies and tests are carried out to investigate the sinking process of a wide-shallow tripod bucket foundation (WTBF). First, the mechanism of seepage-failure of a WTBF at different depths is investigated using both empirical formulas and experiments. In addition, the optimal method to calculate/predict seepage-failure of a WTBF in the sand and the value range of the kfc coefficient are determined. Then, an experiment to determine the maximum adjustable initial tilt-angle (based on seepage failure control) is conducted. This enables the improvement/determination of the control index and control methods for seepage failure as well as the tilt-angle during the sinking process. Finally, an automatic control system for the sinking and leveling of the multi-bucket foundation, which uses a dual-index control method (seepage failure, leveling angle) is developed. The feasibility of this approach is verified through experiments.
Research on sinking and leveling control technology of tripod bucket foundation in sand
Abstract High capacity wind-turbines are increasingly installed offshore and further away from the coast, where strong foundations are required, and their installation is challenging. The so-called multi-bucket foundation is a promising candidate to be used for such scenarios. However, the sinking control technology, which is commonly used to ease the installation, is not very mature. In this paper, a series of theoretical studies and tests are carried out to investigate the sinking process of a wide-shallow tripod bucket foundation (WTBF). First, the mechanism of seepage-failure of a WTBF at different depths is investigated using both empirical formulas and experiments. In addition, the optimal method to calculate/predict seepage-failure of a WTBF in the sand and the value range of the kfc coefficient are determined. Then, an experiment to determine the maximum adjustable initial tilt-angle (based on seepage failure control) is conducted. This enables the improvement/determination of the control index and control methods for seepage failure as well as the tilt-angle during the sinking process. Finally, an automatic control system for the sinking and leveling of the multi-bucket foundation, which uses a dual-index control method (seepage failure, leveling angle) is developed. The feasibility of this approach is verified through experiments.
Research on sinking and leveling control technology of tripod bucket foundation in sand
Wang, Haijun (author) / Yan, Chaojun (author) / Guo, Yaohua (author) / Yang, Xu (author) / Lian, Jijian (author) / Weng, Peiyao (author)
Applied Ocean Research ; 118
2021-12-11
Article (Journal)
Electronic Resource
English
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