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A platform for research: civil engineering, architecture and urbanism
Experimental study of the accumulative deformation effect on wide-shallow composite bucket foundation for offshore wind turbines
In this study, a new type of foundation for offshore wind turbines (OWTs), called wide-shallow composite bucket foundation (WSCBF), in which the bucket is divided into seven rooms by steel bulkheads, was developed and further studied. The influence of the bulkheads on the long-term performance of the WSCBF for OWTs is investigated in cyclic loading model tests. A new type of cyclic loading device is used in model tests. Neutral axis vertical displacement is introduced as a unified standard to measure accumulative deformation results. Test results show that the bulkheads are utilized not only to delay the appearance of plastic deformation for potential engineering applications but also to effectively reduce the final value of accumulative deformation and long-term settlement of WSBCF. Moreover, the natural frequency of the whole structural system is shown to increase under long-term cycle loading. Nevertheless, the accumulative deformation based on WSCBF has a limited effect on the safety of an OWT throughout its operational life. These conclusions are useful for engineering applications and provide guidance for OWT foundation design.
Experimental study of the accumulative deformation effect on wide-shallow composite bucket foundation for offshore wind turbines
In this study, a new type of foundation for offshore wind turbines (OWTs), called wide-shallow composite bucket foundation (WSCBF), in which the bucket is divided into seven rooms by steel bulkheads, was developed and further studied. The influence of the bulkheads on the long-term performance of the WSCBF for OWTs is investigated in cyclic loading model tests. A new type of cyclic loading device is used in model tests. Neutral axis vertical displacement is introduced as a unified standard to measure accumulative deformation results. Test results show that the bulkheads are utilized not only to delay the appearance of plastic deformation for potential engineering applications but also to effectively reduce the final value of accumulative deformation and long-term settlement of WSBCF. Moreover, the natural frequency of the whole structural system is shown to increase under long-term cycle loading. Nevertheless, the accumulative deformation based on WSCBF has a limited effect on the safety of an OWT throughout its operational life. These conclusions are useful for engineering applications and provide guidance for OWT foundation design.
Experimental study of the accumulative deformation effect on wide-shallow composite bucket foundation for offshore wind turbines
Wang, Xuyue (author) / Zhang, Puyang (author) / Ding, Hongyan (author) / Liu, Run (author)
2017-11-01
23 pages
Article (Journal)
Electronic Resource
English
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