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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Puyang Zhang Conghuan Le Hanbo Zhai Hongyan Ding |
| Abstract | Offshore wind turbine foundations are commonly subjected to large horizontal, vertical, and bending moment loads. Marine soils have high moisture content, high compressibility, high sensitivity, and low strength, resulting in insufficient foundation bearing capacity. In order to improve the bearing capacity of wind turbine foundations and reduce foundation settlement, an internal vacuum preloading method combined with electroosmosis reinforcement is used to reinforce the soil within bucket foundations. The pore water pressure, vertical settlement, pumping quality of the soil during the reinforcement process, soil moisture content before and after the reinforcement, and undrained shear strength were analyzed. Horizontal and vertical bearing capacity model tests were carried out on the reinforced and nonreinforced soil inside the bucket foundation. Results show that vacuum preloading combined with electroosmosis reinforcement reduces soil moisture content inside the bucket foundation by approximately 20%, and the undrained shear strength of the internal soil increases by approximately 20 times. Soil reinforcement has high spatial uniformity. Results of the bucket foundation bearing capacity model show that when the soil inside the bucket foundation is strengthened, horizontal bearing capacity increased by 2.9 times and vertical bearing capacity increased by 2.1 times. Vacuum preloading combined with electroosmosis reinforcement can effectively improve the shear strength of soft soil and enhance the bearing capacity and stability of bucket foundations. |
| e-ISSN | 20763417 |
| DOI | 10.3390/app9183778 |
| Journal | Applied Sciences |
| Issue Number | 18 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI AG |
| Publisher Date | 2019-09-01 |
| Publisher Place | Switzerland |
| Access Restriction | Open |
| Subject Keyword | Technology Engineering (general). Civil Engineering (general) Biology (general) Physics Chemistry Bucket Foundation Marine Soft Soil Electroosmosis Reinforcement Offshore Wind Bearing Capacity |
| Content Type | Text |
| Resource Type | Article |
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