Three-dimensional scour hole model and scour effects on the ultimate capacity of lateral loaded rigid piles

被引：24

作者：

Chen, Xuguang ^{[1
]}

Liu, Jinzhong ^{[2
]}

机构：

[1] Ocean Univ China, Shandong Prov Key Lab Ocean Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China

[2] Shandong Univ Sci & Technol, Shandong Prov Key Lab Civil Engn Disaster Prevent, Qingdao 266590, Peoples R China

来源：

APPLIED OCEAN RESEARCH | 2022年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Rigid pile; Scour hole; Scour depth; Current direction; Load eccentricity; Ultimate capacity; VERTICAL EFFECTIVE STRESS; SOFT CLAY; HISTORY; FOUNDATIONS; BEHAVIOR; DIMENSIONS; EVOLUTION; CAISSONS; MONOPILE;

D O I：

10.1016/j.apor.2022.103115

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

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.

引用

页数：16

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