超高冷却塔风振响应特性研究
CSTR:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家重点研发计划项目(2025YFF0519700),湖南省科技创新计划资助(2023RC1036)


Wind-Induced Response Characteristics of a Super High Cooling Tower
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    以一座242.4 m高的钢筋混凝土双曲线自然通风冷却塔为研究对象,开展刚性模型风洞测压试验,并通过表面粗糙度控制实现雷诺数模拟,获得与《工业循环水冷却设计规范》中光滑塔与K1.0有肋塔的体型系数设计曲线高度一致的风压分布.将测得风压时程按相似关系换算至原型结构,建立包含壳体与人字柱体系的有限元模型,计算冷却塔在基准风作用下的风振位移响应与风振系数.结果表明,超高冷却塔沿高度方向的风振系数呈单调增大趋势,喉部区域约为1.48,显著低于规范取值1.9;当阻尼比由5%降至2%时,风振系数增幅不足1%,结构风振响应主要受脉动风主导,对阻尼变化不敏感;考虑电厂周边建筑后,风压分布与风振系数整体变化较小,但在部分风向角下风振系数显著增大至1.66.

    Abstract:

    A 242.4 m high reinforced concrete hyperbolic natural-draft cooling tower is taken as the engineering prototype. Rigid-model wind tunnel pressure tests are conducted, and Reynolds number effects are simulated by controlling the surface roughness of the model. With an appropriate roughness arrangement, the measured shape coefficients agree very well with the design curves for the smooth tower and the K1.0 ribbed tower specified in the Code for Design of Industrial Circulating Cooling Water. The measured pressure time histories are then converted to the prototype scale according to similarity laws and applied to a finite element model that includes both the shell and the V-shaped concrete-filled steel tube columns. The wind-induced radial displacement responses and wind vibration coefficients of the cooling tower under the basic wind action are obtained. The results show that the wind vibration coefficient increases monotonically along the height, reaching about 1.48 near the throat, which is significantly lower than the code value of 1.9. When the structural damping ratio decreases from 5% to 2%, the increase in wind vibration coefficient is less than 1%, indicating that the response is mainly governed by buffeting produced by turbulent wind and is not sensitive to damping within this range. Considering the surrounding buildings of the power plant, the overall changes in wind pressure distribution and wind vibration coefficients are small, and only for several unfavorable wind directions does the maximum wind vibration coefficient increase slightly to about 1.66.

    参考文献
    相似文献
    引证文献
引用本文

叶俊辰,侯宪安,牛华伟,李红星.超高冷却塔风振响应特性研究[J].动力学与控制学报,2026,24(4):75~85; Ye Junchen, Hou Xianan, Niu Huawei, Li Hongxing. Wind-Induced Response Characteristics of a Super High Cooling Tower[J]. Journal of Dynamics and Control,2026,24(4):75-85.

复制
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2025-12-19
  • 最后修改日期:2025-12-28
  • 录用日期:
  • 在线发布日期: 2026-04-24
  • 出版日期:
文章二维码

微信公众号二维码

手机版网站二维码