| Title |
Analysis of the Bearing Behavior of a Tripod Bucket Installed in Clay |
| Authors |
김성렬(Kim, Sung-Ryul) ; 정재욱(eong, Jae-Uk) ; 오명학(Oh, Myounghak) ; 권오순(Kwon, Osoon) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3C.105 |
| Keywords |
지지력;유한요소해석;Tripod 버켓기초;점성토 bearing capacity;finite element analysis;tripod bucket foundation;clay |
| Abstract |
Bucket foundations, which are used in the foundations of offshore wind turbines, should be able to withstand large amounts of horizontal and moment loads. Tripod bucket foundation, which combines three single buckets, has been used to increase horizontal and moment capacities. This study performed numerical analysis using ABAQUS (2010), to analyze the group effect and the bearing capacity of a tripod bucket in clay. Parametric studies were performed varying the bucket spacing ratio S/D (S=spacing between the centers of the bucket and the tower; D=diameter of the bucket) and depth ratio L/D (L=embedded length of skirt). The applied constitutive models were a linear elastic perfectly plastic model with Tresca yield criteria for normally consolidated clay and an elastic model for buckets. Loading in the vertical, horizontal, and moment directions was simulated with an increase in each movement at a reference point. The bearing behavior and the capacities of a single and a tripod bucket were compared. Capacity evaluation method of the tripod bucket was suggested using the capacity of a single bucket. |