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为了研究超大型双曲线冷却塔的抗震性能,以1/35缩尺加工微粒混凝土全塔试验模型,进行振动台试验研究,介绍了模型在不同地震动作用下的位移反应以及斜支柱等的破坏情况。基于SAP2000进行了试验模型的弹塑性数值分析,并结合试验结果对冷却塔结构在地震作用下的致灾机理进行了研究。结果表明:双曲线冷却塔模型地震作用下壳体部分呈现整体运动的特征,一字斜支柱柱底是结构的首要薄弱部位,地震波频谱特性对其地震响应影响较大,应尽量避免在软弱场地下建造大型冷却塔。
In order to study the seismic performance of very large hyperbolic cooling towers, a full-scale experimental model of granular concrete was processed at 1/35 scale, and the shaking table test was carried out. The displacement response of the model under different ground motions and the failure of inclined struts Happening. Based on SAP2000, the elasto-plastic numerical analysis of the test model was carried out and the mechanism of disaster caused by the earthquake was studied based on the experimental results. The results show that the shell part of the hyperbolic cooling tower model shows the characteristics of the whole movement. The bottom of the sloping strut pillar is the most important weak part of the structure. The spectral characteristics of the seismic wave have a great influence on the seismic response, and should be avoided in soft ground Build a large cooling tower.