土木与环境工程学报（中英文）2024，Vol.46Issue(2)：117-128,12.DOI:10.11835/j.issn.2096-6717.2022.003
高耸烟囱风致响应精细化计算方法
Fine calculation method of wind-induced response of high-rise chimneys
摘要
Abstract
The wind-induced response of a high-rise chimney can be divided into along-wind response and across-wind response.The along-wind responses are dominated by buffeting vibrations caused by flow turbulence.The across-wind responses are dominated by vortex-induced vibrations(VIVs)caused by Karman vortex shedding.Accurate assessment of these two kinds of wind-induced responses is critical to the wind-resistants design and structural safety of strustures.The two-dimensional wake oscillator model established by Y.Tamura is further derived and successfully applied to the three-dimensional structure in the present study.An iterative calculation method for practical engineering structures is proposed,which provides a new field of vision for VIV predictions of chimney structures.In addition,a complete quadratic combination(CQC)method in the frequency domain is developed for buffeting predictions of high-rise chimneys.The results of frequency domain calculation are compared with those of time domain calculation.The results show that the iterative calculation method can effectively predict the VIV responses of three-dimensional chimneys,and the buffeting responses calculated in the frequency domain are in good agreement with that obtained in time-domain.关键词
高耸烟囱/结构风工程/涡激共振/抖振/有限元方法Key words
high-rise chimneys/structural wind engineering/vortex-induced vibration/buffeting/finite element method分类
土木建筑引用本文复制引用
孙梦然,刘仰昭,戴靠山,丁志斌,尹业先..高耸烟囱风致响应精细化计算方法[J].土木与环境工程学报（中英文）,2024,46(2):117-128,12.基金项目
国家自然科学基金(51878426、52108463) National Natural Science Foundation of China(Nos.51878426,52108463) （51878426、52108463）
