（浙江大学建筑设计研究院， 杭州 310028）

 

［摘要］根据某拟建的大型双曲冷却塔实际尺寸按照1∶300的比例制作了刚性模型，在其外表面沿高度由上至下布置5道环向测层，每层36个测点，将其放在边界层风洞中进行三塔干扰试验。测试结果表明，在三塔受风荷载作用时，前塔的阻挡作用明显，后塔的时均风力显著减小，但脉动风压却明显增大，使得极值干扰系数增大。同时得到了极值干扰系数最大时的响应干扰系数，给出了考虑三塔干扰的工程设计的干扰系数建议值。

［关键词］大型双曲冷却塔； 风荷载； 三塔干扰； 风致响应； 干扰系数

中图分类号：TU312+.1      文献标识码：A      文章编号：1002-848X(2013)15-0091-06

 

Bao Kanyuan

 (Architectural Design and Research Institute of Zhejiang University, Hangzhou 310028, China)

 

Abstract: The wind-tunnel experiments of rigid model of large hyperbolic cooling towers based on 1∶300 scale was carried out. The five test hoops were disposed from top to bottom, each hoop has 36 test points along the circle. The results show that the wind-pressure of the tower in the rear is seriously influenced by its front tower, the average part of wind-pressure on rear tower is relatively smaller, but the fluctuation part is relatively larger compared to the situation of isolated tower, so the maximum of wind-pressure which is the sum of average part and fluctuation part is relatively larger. The coefficients of wind-pressure and structural response of rear tower under influence of front towers is proposed for structural design.

Keywords: large hyperbolic cooling tower; wind load; three towers; wind-induced response; interference coefficient

作者简介：鲍侃袁，工学博士，工程师,Email: beckham8@zju.edu.cn。

 

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