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本文提出一套完整的方法预测超大型冷却塔倒塌引起的地面振动。文章简要介绍了冷却塔在偶然荷载作用下的倒塌过程,基于“夯锤落地-土体”模型,建立一个“冷却塔-土体”模型用以预测冷却塔在两种不同形式倒塌情况下引起的地面振动。计算中,采用合适的建模方式建立了“冷却塔-土体”模型从而减少了计算量。结果表明冷却塔倒塌时其附近区域会产生强烈的振动,但振动随着距离的增加而衰减。
This article presents a complete set of methods for predicting ground vibrations caused by the collapse of very large cooling towers. In this paper, the collapse process of cooling tower under accidental load is briefly introduced. Based on the model of “rammer landing - soil”, a model of “cooling tower - soil” is established to predict the cooling tower in two different forms Ground vibration caused by collapse. In the calculation, the model of “cooling tower - soil” is established by appropriate modeling method to reduce the amount of calculation. The results show that when the cooling tower collapses, there is a strong vibration in the vicinity of the tower, but the vibration decays with the increase of the distance.