DOI QR코드

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Design and behavior of 160 m-tall post-tensioned precast concrete-steel hybrid wind turbine tower

  • Wu, Xiangguo (College of Civil Engineering, Fuzhou University) ;
  • Zhang, Xuesen (CGN New Holdings Co., Ltd) ;
  • Zhang, Qingtan (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of the Industry and Information Technology, Harbin Institute of Technology) ;
  • Zhang, Dong (College of Civil Engineering, Fuzhou University) ;
  • Yang, Xiaojing (College of Civil Engineering, Fuzhou University) ;
  • Qiu, Faqiang (JianYan Test Group Co., Ltd) ;
  • Park, Suhyun (Department of Architecture & Architectural Engineering, Seoul National Univ.) ;
  • Kang, Thomas H.K. (Department of Architecture & Architectural Engineering, Seoul National Univ.)
  • 투고 : 2022.01.26
  • 심사 : 2022.08.01
  • 발행 : 2022.08.10

초록

Prefabricated hybrid wind turbine towers (WTTs) are promising due to height increase. This study proposes the use of ultra-high performance concrete (UHPC) to develop a new type of WTT without the need to use reinforcement. It is demonstrated that the UHPC WTT structure without reinforcing bars could achieve performance similar to that of reinforced concrete WTTs. To simplify the design of WTT, a design approach for the calculation of stresses at the horizontal joints of a WTT is proposed. The stress distribution near the region of the horizontal joint of the WTT structure under normal operating conditions and different load actions is studied using the proposed approach, which is validated by the finite element method. A further parametric study shows that the degree of prestressing and the bending moment both significantly affect the principal stress. The shear-to-torsion ratio also shows a significant influence on the principal tensile stress.

키워드

과제정보

This work was supported by the National Natural Science Foundation of China (52178195), the Xiamen Construction Science and Technology plan project (XJK2020-1-9), the project sponsored by Harbin city science and technology innovation talents special funds (2011RFLXG014), and the National Foundation of Korea (NRF-2021R1A5A1032433).

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