Computer-aided analysis on scale-down group pile model of offshore wind turbine subjected to wind and wave loadings
碩士 === 國立成功大學 === 土木工程學系 === 102 === This research is focus on responses of scale-down offshore wind turbine foundation that subjected to wind and wave loadings. Finite element method is adopted to analyze both static and dynamic behaviors of group piles of offshore wind turbines that suffer complic...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/jza487 |
| Summary: | 碩士 === 國立成功大學 === 土木工程學系 === 102 === This research is focus on responses of scale-down offshore wind turbine foundation that subjected to wind and wave loadings. Finite element method is adopted to analyze both static and dynamic behaviors of group piles of offshore wind turbines that suffer complicated loadings. The Abaqus code is used in this study to solve complicated and highly non-linear problem including soil-structure-soil interaction that is the center part of pile foundation analysis. Both scale-down and non-scale-down model analyses with the same loadings and boundary conditions are performed and compared to investigate the scaling effect. The results show that the numerical model of single pile under lateral loading is close to the results of LPILE based on p-y method. Scaling down model with different stiffness change the displacement and moment distribution of the pile in same soil property and slightly increase the soil lateral ultimate capacity. Results of group pile under extreme wind and wave loadings reveal that the responses of piles is dominated by wind force and the wave loadings only induces minor effect on the overall system. Last, this research recommends the stiffness reduction ratios for scale-down group pile model design.
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