Analysis of collapse causes for a chimney under construction in Balco Power Plant of India
Analysis of collapse causes for a chimney under construction in Balco Power Plant of India
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发表时间：
2011
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通讯作者：
Li Chao
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作者：
Li Chao
2009年9月23日，印度中部巴尔科发电厂一座在建的大型烟囱在强风暴天气中倒塌，造成严重人员伤亡和巨大经济损失，而另一座同样建造的烟囱却幸免于难。迄今为止，对事故的原因还没有进行严格科学的分析。本文在调查研究设计、施工、现场相关资料的基础上，结果表明，烟囱破坏的初始部位是结构的顶部（特别是施工平台和烟囱筒壁局部坍塌）;然后从顶部落下的碎片与结构的下部相撞，碰撞最终导致整体坍塌，分析结果也与碎片和倾倒现场的观察以及目击者的描述相吻合，并通过对中美两国烟囱设计规范的比较，结合分析结果，沿着提出了防止烟囱工程类似事故发生的建议。
A large chimney under construction at the Balco Power Plant in central India collapsed on Sep.23,2009 in severe stormy weather,causing serious casualties and massive economic losses,while another,similarly built,survived.So far,there has been no strict and scientific analysis of causes of the accident.In this paper,the finite element method is used to simulate the effect of wind loads and the whole collapse process based on an investigation of information about the design,the construction,site related records,etc.The results show that the initial part of the chimney destroyed was the top of the structure(specifically the construction platform and the partial collapse of the cylinder wall of the chimney);then the debris from the top fell and collided with the lower part of the structure,the collision eventually leading to the whole collapse.The analysis results are also consistent with the observation of debris and the toppling scene and what the witnesses described,and scientifically clarifies the actual cause of the chimney collapse.In addition,by comparing the chimney design codes between the USA and China,along with the analysis results,some suggestions are proposed to prevent similar accidents in chimney projects.