|Table of Contents|

Study on wind vibration performance of concrete-filled double skin steel tubular wind turbine tower(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2023年02期
Page:
26-39
Research Field:
建筑结构
Publishing date:

Info

Title:
Study on wind vibration performance of concrete-filled double skin steel tubular wind turbine tower
Author(s):
WANG Wenda;  ZHANG Lili;  JI Sunhang;  SHI Yanli
(School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China)
Keywords:
wind turbine;  concrete-filled double skin steel tubular tower;  aerodynamic load;  vibration characteristic;  dynamic response
PACS:
TU355
DOI:
10.19815/j.jace.2021.10076
Abstract:
The conical single tube steel thin-walled slender structure is usually adopted in traditional wind turbine towers, which is prone to large deformation and vibration under the blade rotation and wind loads. In order to overcome the development limitations of the traditional steel towers and utilize the excellent mechanical properties of the concrete-filled double skin steel tube(CFDST)structure, a CFDST tower structure based on a certain conical steel tower tube was designed through the bearing capacity equivalence. Using ABAQUS software, the finite element models of the wind-induced vibration performance of the two towers were established and the vibration modes were compared. The dynamic response characteristics of the two towers under different load conditions were compared and analyzed in the time domain and frequency domain, and the vibrations of the tower and blades under transient impact load were also studied. The results show that the CFDST tower can reduce the bottom section size by 25.6% while ensuring the bending capacity and stiffness of the original steel tower tube and will not resonate with the harmonic excitation generated by the rotation of the blades. Damping has a significant impact on displacement, velocity, acceleration, and stress response amplitudes of the wind turbine tower. Compared with the steel tower, the peak displacement, acceleration amplitude and maximum equivalent stress of the CFDST tower under normal operating load conditions are reduced by 21.1%, 30.2% and 41.6%, while decreased by 14.4%, 32.2% and 36.3% under storm load condition. The research findings can provide references for the design and optimization of relevant CFDST towers.

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Last Update: 2023-03-20