Characteristics of wind load on inner surface of super large cooling tower under tornado action

被引：0
|
作者：
Chen X. [1 ]
Huang L. [1 ]
Ding F. [1 ]
Han L. [1 ]
Wang T. [1 ]
Zhao L. [2 ]
机构：
[1] School of Civil Engineering, Shanghai Normal University, Shanghai
[2] State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 21期
关键词：
Inner pressure; Super large cooling tower; Swirl ratio; Tornado; Wind tunnel test;
D O I：
10.13465/j.cnki.jvs.2021.21.005
中图分类号：
学科分类号：
摘要：
Taking a 215 m high super large cooling tower planned for construction as the study object, based on the physical simulation device of tornado, wind tunnel tests for cooling tower rigid body pressure measurement under the action of tornado were conducted. Distribution laws of wind pressure on inner surface of the tower under conditions of different tornado swirl ratios were studied to propose the mathematical model for tower inner pressure distribution under tornado. The results showed that the tower inner pressure under tornado is mainly affected by tornado pressure drop, it is a negative pressure with uniform distribution and strong circumferential correlation; tower inner pressure decreases with decrease in swirl ratio within tornado vortex core radius and distance between tower center and vortex center, i.e., the inner suction of cooling tower is the maximum when the tower is located at tornado vortex core center with low swirl ratio; tower inner pressure distribution can be quantitatively expressed as a logarithmic model with respect to the relative position between cooling tower and tornado. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
收藏
页码：31 / 38
页数：7
相关论文
共 27 条
  • [1] WU Jike, Review and prospect about structural analysis of cooling towers, Mechanics in Engineering, 18, 6, pp. 1-5, (1996)
  • [2] (2003)
  • [3] (2006)
  • [4] BUSCH D, HARTE R, KRATZIG W B, Et al., New natural draft cooling tower of 200 m of height, Engineering Structures, 24, 12, pp. 1509-1521, (2002)
  • [5] ZHAO L, GE Y J., Wind loading characteristics of super-large cooling towers, Wind and Structures, 13, pp. 257-273, (2010)
  • [6] KE S T, YU W, ZHU P, Et al., Full-scale measurements and damping ratio properties of cooling towers with typical heights and configurations, Thin-Walled Structures, 124, pp. 437-448, (2018)
  • [7] FANG G S, ZHAO L, CHEN X, Et al., Normal and typhoon wind loadings on a large cooling tower: a comparative study, Journal of Fluids and Structures, 95, (2020)
  • [8] CHEN X, ZHAO L, CAO S Y, Et al., Extreme wind loads on super-large cooling towers, Journal of the IASS, 57, 1, pp. 49-58, (2016)
  • [9] HUANG Dapeng, ZHAO Shanshan, GAO Ge, Et al., Disaster characteristics of tornadoes over China during the past 30 years, Torrential Rain and Disaster, 35, 2, pp. 97-101, (2016)
  • [10] ZHANG Junfeng, GE Yaojun, ZHAO Lin, Study on global aerostatic stability of hyperboloidal cooling tower based on the wind tunnel tests, Engineering Mechanics, 29, 5, pp. 68-77, (2012)
123