Simplified Stress Evaluations of Self-Supporting Steel Chimney Cylinders Under Wind Loading

YANG Shiqing; ZHAO Jingtong; WANG Dengfeng

doi:10.3724/j.gyjz.G22011908

Volume 55 Issue 3

Mar. 2025

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YANG Shiqing, ZHAO Jingtong, WANG Dengfeng. Simplified Stress Evaluations of Self-Supporting Steel Chimney Cylinders Under Wind Loading[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 124-133. doi: 10.3724/j.gyjz.G22011908

Citation:

YANG Shiqing, ZHAO Jingtong, WANG Dengfeng. Simplified Stress Evaluations of Self-Supporting Steel Chimney Cylinders Under Wind Loading[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 124-133. doi: 10.3724/j.gyjz.G22011908

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Simplified Stress Evaluations of Self-Supporting Steel Chimney Cylinders Under Wind Loading

doi: 10.3724/j.gyjz.G22011908

School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China

Received Date: 2022-01-19
Available Online: 2025-06-07
Publish Date: 2025-03-20

Abstract

Abstract

The failure modes and maximum stress evaluation methods of self-supporting steel chimney cylinders under static wind loading were investigated by the combined method of theoretical deduction and the nonlinear finite element analysis considering the influence of the initial circumferential welding geometrical imperfections. It was found that under the wind loading， the reinforced steel chimney cylinders with normal geometries exhibited two failure modes. One was the buckling failure caused by the wind-induced meridional compressive stresses at the bottom circumferential weld， the other was the strength failure caused by the meridional tensile stresses reaching the yielding strength in the tension area at the bottom windward meridian. The correction factors for the maximum meridional compressive stresses and tensile stresses were produced. The accurate values of the maximum stresses could be obtained by modifying the theoretical values of the maximum stresses calculated according to the cantilever beam theory. The main influencing parameters of the stress correction factors were the total height of the chimney， the overall circumferential bending stiffness of the stiffened steel chimney， the height-radius ratio and the radius-thickness ratio of the chimney cylinder. Based on a great many of computation results， the evaluation formulas of the maximum stresses of the chimney cylinder were proposed.
- chimney cylinder,
- wind loading,
- strength,
- buckling,
- maximum stress evaluation,
- nonlinear finite element,
- circumferential welding imperfection

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References(19)

References

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