Full-scale measurement and distribution rules of surface fluctuating wind pressure of a large cooling tower
Zhao Lin1 Liu Xiaopeng1 Gao Ling2 Yao Youcheng3 Hou Xian′an3 Ge Yaojun1
1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University
2. East China Electric Power Design Institute
3. North West Electric Power Design Institute
Abstract：Abstract: The items for wind loads in Chinese Cooling Tower Codes came from the measured data of full-scale cooling tower (with a height of about 90m) in 1980′s, and only static pressure distributions with polynomial expressions on the surface of tower shaft were proposed. In fact, for superlarge cooling tower (with a height of no less than 165m), the wind vibration problem shall be closely related to the fluctuating effects of wind loads. Due to the incompleteness of simulation rules on Reynolds number in physical and mathematical test models of superlarge cooling tower, the difficulty in reproducing the rational relations between the dynamic wind loads on the surface of tower shell and those parameters such as incoming flow conditions and combination types of tower groups has become a bottleneck problem of studying the wind-resistant performance and the structural design of superlarge cooling tower. Therefore, all-weather data measurement for a superlarge cooling tower (with a height of about 166m) in Xuzhou was conducted. Based on the long-term field observation for the static and dynamic wind pressures on the surface of tower shell, the influence relations between the surface fluctuating wind pressure and the turbulence intensity of incoming flow were quantified. And, a novel simulation rule was proposed for the fluctuating wind pressure under supercritical Reynolds number (Re>6E7).
赵林 刘晓鹏 高玲 姚友成 侯宪安 葛耀君. 大型冷却塔表面脉动风压原型实测与分布准则[J]. 土木工程学报, 2017, 50(1): 1-11.
Zhao Lin Liu Xiaopeng Gao Ling Yao Youcheng Hou Xian′an Ge Yaojun. Full-scale measurement and distribution rules of surface fluctuating wind pressure of a large cooling tower. 土木工程学报, 2017, 50(1): 1-11.
