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Three-dimensional scour hole model and scour effects on the ultimate capacity of lateral loaded rigid piles
https://orcid.org/0000-0003-3425-2313
Highlights Scour tests and lateral static load tests were conducted. A three-dimensional scour hole model under steady current and its analytical expression is proposed. The scour effect is positively related to the scour depth, and has nothing to do with the load eccentricity. A formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented.
Abstract The rigid pile with a large diameter and a small slenderness ratio is the most widely used foundation for offshore wind turbines. Scour around piles seriously threatens the safe operation of offshore wind turbines, so its effects on rigid piles need to be studied urgently. In this paper, scour tests under steady current and static lateral load tests after scour are conducted. According to the results of scour tests, a three-dimensional scour hole model suitable for engineering reality and its analytical expression are proposed. Then, the results of load tests indicate that scour reduces the ultimate lateral capacity of foundations, and the percentage of reduction is related to the current direction, whereas does not change with load eccentricity. Finally, a preliminary formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented, which can easily and quickly determine the upper and lower limits of scour effects.
Three-dimensional scour hole model and scour effects on the ultimate capacity of lateral loaded rigid piles
https://orcid.org/0000-0003-3425-2313
Highlights Scour tests and lateral static load tests were conducted. A three-dimensional scour hole model under steady current and its analytical expression is proposed. The scour effect is positively related to the scour depth, and has nothing to do with the load eccentricity. A formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented.
Abstract The rigid pile with a large diameter and a small slenderness ratio is the most widely used foundation for offshore wind turbines. Scour around piles seriously threatens the safe operation of offshore wind turbines, so its effects on rigid piles need to be studied urgently. In this paper, scour tests under steady current and static lateral load tests after scour are conducted. According to the results of scour tests, a three-dimensional scour hole model suitable for engineering reality and its analytical expression are proposed. Then, the results of load tests indicate that scour reduces the ultimate lateral capacity of foundations, and the percentage of reduction is related to the current direction, whereas does not change with load eccentricity. Finally, a preliminary formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented, which can easily and quickly determine the upper and lower limits of scour effects.
Three-dimensional scour hole model and scour effects on the ultimate capacity of lateral loaded rigid piles
https://orcid.org/0000-0003-3425-2313
Highlights Scour tests and lateral static load tests were conducted. A three-dimensional scour hole model under steady current and its analytical expression is proposed. The scour effect is positively related to the scour depth, and has nothing to do with the load eccentricity. A formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented.
Abstract The rigid pile with a large diameter and a small slenderness ratio is the most widely used foundation for offshore wind turbines. Scour around piles seriously threatens the safe operation of offshore wind turbines, so its effects on rigid piles need to be studied urgently. In this paper, scour tests under steady current and static lateral load tests after scour are conducted. According to the results of scour tests, a three-dimensional scour hole model suitable for engineering reality and its analytical expression are proposed. Then, the results of load tests indicate that scour reduces the ultimate lateral capacity of foundations, and the percentage of reduction is related to the current direction, whereas does not change with load eccentricity. Finally, a preliminary formula for evaluating the ultimate lateral capacity of rigid piles after scour is presented, which can easily and quickly determine the upper and lower limits of scour effects.
Three-dimensional scour hole model and scour effects on the ultimate capacity of lateral loaded rigid piles
Chen, Xuguang (author) / Liu, Jinzhong (author)
Applied Ocean Research ; 121
2022-02-20
Article (Journal)
Electronic Resource
English
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