Research on Collapse Mechanism and Failure Criterion of Superlarge Cooling Tower under Downburst Effect
Publication: Journal of Structural Engineering
Volume 148, Issue 10
Abstract
The world’s highest cooling tower (228 m), which is under construction in Northwest China, was chosen to study the response characteristics and collapse mechanism of a superlarge cooling tower under the downburst effect. A structural multiscale finite-element model was constructed using the layered shell element method. Fluctuating wind pressures on the internal and external surfaces of the superlarge cooling tower at four typical working conditions under the downburst effect were obtained based on large-eddy simulation (LES). The variation laws of the wind-induced collapse of superlarge cooling tower were analyzed using incremental dynamic analysis. The collapse mechanisms of the superlarge cooling tower under downburst effect were determined. The collapse failure criterion of the superlarge cooling tower under the downburst driving effect were established. Results demonstrated that the wind pressure distribution mode on the tower body surface under downburst was significantly different from that under normal wind. The collapse mechanism of the superlarge cooling tower changed from an inward mechanism to an outward mechanism with the increase of the distance to the downburst center. When the energy failure criterion index was , the superlarge cooling tower collapsed.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This project is jointly supported by the National Natural Science Foundation (51878351 and 51761165022), the Natural Science Foundation of Jiangsu Province (BK20211518 and BK20210309), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX21_0234), and the Postgraduate Research & Practice Innovation Program of Nanjing University of Aeronautics and Astronautics (XCXJH20210719). The opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 10 • October 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Apr 14, 2021
Accepted: Jun 6, 2022
Published online: Aug 1, 2022
Published in print: Oct 1, 2022
Discussion open until: Jan 1, 2023
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Cited by
- Wenjie Li, Shitang Ke, Xu Chen, Lin Zhao, Yaojun Ge, Collapse Mechanism and Failure Criterion of Superlarge Cooling Tower under Tornado, Journal of Structural Engineering, 10.1061/JSENDH.STENG-12838, 150, 3, (2024).