• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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Volume 59 Issue 1
Jan.  2024
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Article Contents
LEI Wei, WANG Qi, LI Mingshui, LI Zhiguo. Experimental Study on Wind-Induced Characteristics of Tall Double Chimneys with Large Spacing[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 104-112. doi: 10.3969/j.issn.0258-2724.20230056
Citation: LEI Wei, WANG Qi, LI Mingshui, LI Zhiguo. Experimental Study on Wind-Induced Characteristics of Tall Double Chimneys with Large Spacing[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 104-112. doi: 10.3969/j.issn.0258-2724.20230056

Experimental Study on Wind-Induced Characteristics of Tall Double Chimneys with Large Spacing

doi: 10.3969/j.issn.0258-2724.20230056
  • Received Date: 15 Feb 2023
  • Rev Recd Date: 11 Sep 2023
  • Available Online: 15 Nov 2023
  • Publish Date: 28 Sep 2023
  • Double-chimney structure has aerodynamic interference effects under natural wind, which will induce large wind-induced vibrations, further threatening the safety of the structure. Reasonable calculation and prediction of wind-induced vibration responses are essential for wind resistance design of double-chimney structures. A double-chimney structure with a center distance equal to eight times its average diameter was experimentally tested. The wind tunnel tests of force measurement with a rigid model and vibration measurement with an elastic model were carried out. The test results were compared with the calculated values of the Chinese code, European code, and International Committee on Industrial Construction (CICIND) code to explore the wind-induced response characteristics of the double chimneys under different wind angles. The results demonstrate that in tandem arrangement, the chimney on the windward side shows the shielding and interference effects. Therefore, the bending moment at the bottom of the chimney on the leeward side is reduced, and the across-wind displacement is greater than that at other wind angles. The calculated values of wind-induced vibration coefficients are close to the test values due to the interference effects of the power station. When the height of the chimney exceeds the station, the calculated values are greater than the test values. In terms of the across-wind responses, the values calculated by the Chinese code are 37.1% larger than the test values. The values calculated by the European code are close to and only 6.9% smaller than the test values, but the values calculated by the CICIND code are 17.1% smaller than the test values.

     

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