大型冷却塔风洞试验研究与结构分析

摘要

In order to research the wind effects on large cooling towers,one project under construction in India is taken as an example to illustrate the wind tunnel tests and structural analysis of the large cooling towers systematically.The wind tunnel tests mainly include simulation of Reynolds number effect for single cooling tower model,force balance wind tunnel tests of rigid models by 1∶500,and external pressure wind tunnel tests of rigid models by 1∶200.The structural analysis mainly includes finite element analysis on piles,diagonal columns,and shells of the cooling tower,global and local stability analysis,and stability analysis during construction period.Some useful conclusions are given which can be references in the design of other similar cooling towers.%为研究大型冷却塔群在风荷载作用下的受力,以印度某大型冷却塔（塔群）为工程背景,介绍了大型冷却塔（塔群）风洞试验研究和风荷载作用下的结构分析,主要包括：冷却塔单塔雷诺数效应模拟;冷却塔（塔群）1∶500刚体模型高频天平测力风洞试验;冷却塔（塔群）1∶200刚体模型测压风洞试验;冷却塔桩基、人字柱、塔筒内力分析;塔筒整体、局部和施工阶段稳定性分析.通过上述风洞试验和结构分析得到了一些有益结论,为类似工程设计提供借鉴.