Wind-Induced Fatigue Study of Bolted Flange Joints of Self-Standing Steel Chimneys

CAO Baoya; YANG Bingyi; LI Aiqun; DENG Yang; DING Youliang

doi:10.3724/j.gyjzG24071501

Volume 55 Issue 1

Jan. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(1): 75-85

CAO Baoya, YANG Bingyi, LI Aiqun, DENG Yang, DING Youliang. Wind-Induced Fatigue Study of Bolted Flange Joints of Self-Standing Steel Chimneys[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(1): 75-85. doi: 10.3724/j.gyjzG24071501

Citation:

CAO Baoya, YANG Bingyi, LI Aiqun, DENG Yang, DING Youliang. Wind-Induced Fatigue Study of Bolted Flange Joints of Self-Standing Steel Chimneys[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(1): 75-85. doi: 10.3724/j.gyjzG24071501

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Wind-Induced Fatigue Study of Bolted Flange Joints of Self-Standing Steel Chimneys

doi: 10.3724/j.gyjzG24071501

CAO Baoya^1,2,
YANG Bingyi^1,2,
LI Aiqun^{1,2,3
,
,},
DENG Yang^1,2,
DING Youliang³

1. School of Civil and Transportation Eng., Beijing Uni. of Civil Eng. and Architecture, Beijing 100044, China;
2. Multi-Functional Shaking Tables Lab., Beijing Uni. of Civil Eng. and Architecture, Beijing 100044, China;
3. School of Civil Eng., Southeast Uni., Nanjing 210096, China

Received Date: 2024-07-15
Available Online: 2025-03-28

Abstract

Abstract

The chimney of the towering steel structure is often connected by bolted flange joints, which are prone to fatigue cracks under wind loads. Firstly, an 80 m self-standing steel chimney girder-solid multi-scale finite element model was established based on ABAQUS. The wind field was simulated by MATLAB, and the fatigue life of the bolt was calculated based on the rainflow counting method and the Miner cumulative damage criterion. The influence of bolt preload on the fatigue life was discussed, and the relation curve between bolt preload and fatigue life was fitted. The fatigue life of bolted flange joints under the action of typhoons of different intensities was compared and analyzed. Tuned Liquid Damper (TLD) was designed and installed, and the effects of TLD damping on the fatigue life of steel chimneys were analyzed. The results showed that under the action of wind loads, the life of the bolted joint at the variable section was the lowest, and the life of the bolted joint at the bottom of the steel chimney of the project was the second. The fatigue life of bolted flange joints significantly decreased with the decrease of bolt preload.When the preload was lost by 40%, the fatigue life of bolts at the variable section under normal climate wind would be lower than the design service life of 50 years. The TLD damping design installed a total of 48 circular water tanks with 6 layers, which could effectively prolong the fatigue life of bolts. Under ordinary typhoons, after installing TLD, the fatigue life of bolt joints at the variable section of the steel chimney could be extended from 32 years to 54 years. When the bolt preload was lost to different degrees under typhoons, the fatigue life of bolts could increase by 50% after installing TLD.
- steel chimney,
- wind load,
- bolts,
- fatigue,
- Tuned Liquid Damper

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References(32)

References

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