Smart Structures and Systems

  • 제26권5호
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  • Pages.619-629
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  • 2020
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Mitigation of wind-induced responses of cylinder solar tower by a tiny eddy current tuned mass damper based on elastic wind tunnel tests

  • Liu, Min (Key Laboratory for Wind and Bridge Engineering of Hunan Province, College of Civil Engineering, Hunan University) ;
  • Li, Shouying (Key Laboratory for Wind and Bridge Engineering of Hunan Province, College of Civil Engineering, Hunan University) ;
  • Chen, Zhengqing (Key Laboratory for Wind and Bridge Engineering of Hunan Province, College of Civil Engineering, Hunan University)
  • 투고 : 2019.12.02
  • 심사 : 2020.07.29
  • 발행 : 2020.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Solar towers, which often has a large aspect ratio and low fundamental natural frequency, were extremely prone to large amplitude of wind-induced vibrations, especially Vortex-Induced Vibration (VIV). A tiny Tuned Mass Damper (TMD) with conveniently adjustable eddy current damping was specially designed and manufactured for elastic wind tunnel tests of a solar tower. A series of numerical simulations by using the COMSOL software were conducted to determine three key parameters, including the thickness of the back iron plate and the conductive plate (Tb and Tc), the distance between the magnet and the conductive plate (Td). Based on the results of numerical simulations, a tiny TMD was manufactured and its structural parameters were experimentally identified. The optimized values of the tiny TMD can be conveniently realized. The tiny TMD was installed at the top of the elastic test model of a 243-meter-high solar tower, and a series of wind tunnel tests were carried out to examine the effectiveness of the TMD in suppressing wind-induced responses of the test model. The results showed that the wind-induced responses could be obviously reduced by the TMD, especially in the cross-wind direction. The cross-wind RMS and peak responses at the critical wind velocity can be reduced by about 86% and 75%, respectively. However, the maximum reduction of the responses at the design wind velocity is about 45%, obviously less than that at the critical wind velocity.

키워드

과제정보

This project is supported by the National Key Research and Development Program of China (Grant No. 2017YFC0703600 and No. 2017YFC0703604).

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피인용 문헌

  1. Wind-Induced Vibration Control of High-Rise Structures Using Compound Damping Cables vol.2021, 2020, https://doi.org/10.1155/2021/5537622