火电厂悬挂式钢内筒烟囱地震反应分析

Seismic response analysis on chimney with suspensory inner steel cylinder of thermal power plants

火电厂悬挂式钢内筒烟囱因经济的用钢量和日趋成熟的建造技术,在国内外工程中得到越来越多的应用。但目前,对此类烟囱的地震反应研究还较欠缺,本文就此类烟囱的自振特性及地震反应分析作了初步研究,讨论了计算模型、自振特性、反应谱和时程分析等问题。相关结果可供有关研究人员和工程技术人员参考。

Suspensory inner steel cylinder chimney has increasingly been applied both in domestic and abroad in thermal power plants because of its economical usage of steel material and mature construction technology.But now,the research on seismic response of this kind of chimney is not efficient.Thus,preliminary research is conducted on free vibration characteristics and seismic response analysis of this kind of chimney in this paper.Results are discussed and can be referenced by researchers and engineers.