建筑结构学报2017，Vol.38Issue(10)：78-87,10.DOI:10.14006/j.jzjgxb.2017.10.009
高度200m特大型冷却塔二维风振系数取值方法及分布规律研究
Research for value obtained methods and distribution of two-dimensional wind vibration coefficient of super large cooling towers with 200 m height level
摘要
Abstract
To systematically study the wind vibration characteristics and wind vibration coefficient of super large cooling towers over 190 m height limit of standard,a domestic under-construction super large cooling tower with 200 m height was used as the research object.The large eddy simulation of numerical simulation was carried out to simulate the average and pulsating wind load,and the simulation,national code and actual measurement results were compared to verify the effectiveness of the large eddy simulation method.On this basis,the dynamic property,wind-induced response and wind vibration coefficient were analyzed systematically by finite element method.The value obtained methods of wind vibration coefficient based on meridional axial force of windward side,von Mises stress of windward side,radial displacement,meridional axial force and circumferential monent were discussed.The two-dimensional wind vibration coefficients of super large cooling tower with 200 m height level has outstanding spatial distribution characteristics and are generally larger at the bottom and lee regions of the cooling tower.The recommended values and fitting fornulas of two-dimensional wind vibration coefficient for this kind of super large cooling towers were given.The research can provide scientific basis for the wind-resistant design of super large cooling towers with 200 m height level.关键词
特大型冷却塔/大涡模拟/风振系数/取值方法/拟合公式Key words
super large cooling tower/large eddy simulation/wind vibration coefficient/value obtained method/fitting formula分类
建筑与水利引用本文复制引用
柯世堂,余文林..高度200m特大型冷却塔二维风振系数取值方法及分布规律研究[J].建筑结构学报,2017,38(10):78-87,10.基金项目
江苏省优秀青年基金项目(BK20160083),国家自然科学基金项目(51208254),中国博士后科学基金项目(2013M530255,1202006B),江苏高校青蓝工程项目. （BK20160083）
