针对规范和风洞试验作用下冷却塔的风荷载和风致响应差异进行研究，对比中、英、德三国规范给出的冷却塔平均风压分布系数，以某冷却塔为例比较试验和规范的风荷载差异，建立“塔筒－支柱－环基－桩”的冷却塔一体化有限元模型，进行不同的表面风压分布对冷却塔风致响应和局部稳定性的影响研究。研究表明：风洞试验得到的平均风压分布系数在顶部和底部存在三维流分布；规范和试验风荷载作用下冷却塔各响应的最值情况各有差异，其中对于人字柱和桩基轴力风洞试验的计算结果最大；中、英、德规范计算的局部稳定性系数非常接近，风洞试验结果总体上大于规范结果，其最小值比规范结果大37．8％。%The differences between wind-induced response of a cooling tower and its wind loads obtained from codes and those under wind tunnel tests were studied.A comparison was made among wind pressure distribution coefficients derived from Chinese,British and Germany codes.The wind loads on a large cooling tower obtained from tests and codes were compared.A finite element model for a tower shell-herringbone column-circular foundation-pile integration tower system was established.The influences of wind pressure distributions on wind-induced responses and local stability coefficients of the integration tower system were studied.The results showed that the wind pressure distribution coefficients on the top and bottom of the system are quite different from those on the middle of the system due to three-dimensional flow effects;the biggest values of wind-induced responses under tests and those from codes have differences,for example,the axial forces of herringbone columns and piles reach their biggest values under wind tunnel tests;the local stability coefficients of the system from Chinese,British and Germany codes are quite close to each other;the results of wind tunnel tests are larger than those of codes as a whole,the former's minimum values are 37.8% larger than those of the latter.
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