Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading
The offshore wind energy (OWE) pile foundation is mainly a large diameter open-ended single pile in shallow water, which has to bear long-term horizontal cyclic loads such as wind and waves during OWE project lifetime. Under the complex cyclic loads, the stress and displacement fields of the pile-so...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/18/5348 |
| _version_ | 1797553321670606848 |
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| author | Junwei Liu Zhipeng Wan Xingke Dai Dongsheng Jeng Yanping Zhao |
| author_facet | Junwei Liu Zhipeng Wan Xingke Dai Dongsheng Jeng Yanping Zhao |
| author_sort | Junwei Liu |
| collection | DOAJ |
| description | The offshore wind energy (OWE) pile foundation is mainly a large diameter open-ended single pile in shallow water, which has to bear long-term horizontal cyclic loads such as wind and waves during OWE project lifetime. Under the complex cyclic loads, the stress and displacement fields of the pile-soil system change continuously, which affects the dynamic characteristics of the pile foundation. Within the service life of the pile foundation, the pile-soil system has irreversible cumulative deformation, which further causes damage to the whole structure. Therefore, it is important to examine the overall dynamic characteristics of wind power foundation under high cycle. In this paper, in the dry sand foundation, taking the Burbo Bank 3.6 MW offshore turbine-foundation structure as the prototype, the horizontal cyclic loading model tests of the wind power pile foundation with the scale of 1:50 were carried out. Considering the factors such as loading frequency and cyclic load ratio, the horizontal dynamic characteristics of the whole OWE pile foundation are studied. The comparison results between the maximum bending moment of pile and the fitting formula are discussed. In conclusion, moment of OWE pile shaft is corresponding to the loading frequency (<i>f</i> = 9 HZ) and loading cycles by fitting formulas. The fatigue damage of the OWE pile does not occurs with low frequencies in high cycles. |
| first_indexed | 2024-03-10T16:13:41Z |
| format | Article |
| id | doaj.art-88fe74f96fd44db1a269badc878356bb |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T16:13:41Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-88fe74f96fd44db1a269badc878356bb2023-11-20T14:13:39ZengMDPI AGSensors1424-82202020-09-012018534810.3390/s20185348Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal LoadingJunwei Liu0Zhipeng Wan1Xingke Dai2Dongsheng Jeng3Yanping Zhao4College of Architecture and Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Architecture and Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Architecture and Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaCollege of Architecture and Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaShandong Bureau of China Metallurgical Geology Bureau, Jinan 250014, ChinaThe offshore wind energy (OWE) pile foundation is mainly a large diameter open-ended single pile in shallow water, which has to bear long-term horizontal cyclic loads such as wind and waves during OWE project lifetime. Under the complex cyclic loads, the stress and displacement fields of the pile-soil system change continuously, which affects the dynamic characteristics of the pile foundation. Within the service life of the pile foundation, the pile-soil system has irreversible cumulative deformation, which further causes damage to the whole structure. Therefore, it is important to examine the overall dynamic characteristics of wind power foundation under high cycle. In this paper, in the dry sand foundation, taking the Burbo Bank 3.6 MW offshore turbine-foundation structure as the prototype, the horizontal cyclic loading model tests of the wind power pile foundation with the scale of 1:50 were carried out. Considering the factors such as loading frequency and cyclic load ratio, the horizontal dynamic characteristics of the whole OWE pile foundation are studied. The comparison results between the maximum bending moment of pile and the fitting formula are discussed. In conclusion, moment of OWE pile shaft is corresponding to the loading frequency (<i>f</i> = 9 HZ) and loading cycles by fitting formulas. The fatigue damage of the OWE pile does not occurs with low frequencies in high cycles.https://www.mdpi.com/1424-8220/20/18/5348OWE pile foundationhorizontal cyclic loadinghorizontal displacementmaximum moment |
| spellingShingle | Junwei Liu Zhipeng Wan Xingke Dai Dongsheng Jeng Yanping Zhao Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading Sensors OWE pile foundation horizontal cyclic loading horizontal displacement maximum moment |
| title | Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading |
| title_full | Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading |
| title_fullStr | Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading |
| title_full_unstemmed | Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading |
| title_short | Experimental Study on Whole Wind Power Structure with Innovative Open-Ended Pile Foundation under Long-Term Horizontal Loading |
| title_sort | experimental study on whole wind power structure with innovative open ended pile foundation under long term horizontal loading |
| topic | OWE pile foundation horizontal cyclic loading horizontal displacement maximum moment |
| url | https://www.mdpi.com/1424-8220/20/18/5348 |
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