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摘要: 对于大型自然通风冷却塔的抗震计算常采用有限元法进行模拟分析,由于冷却塔体型较大,精细的模型计算耗时长,较稀疏的单元划分的计算结果无法保证准确性。本文在对某大型冷却塔进行整体有限元分析的基础上,将结构的薄弱部位取出,对其进行精细的结构细部有限元分析。计算结果表明,地震荷载作用下冷却塔的变形集中在支柱位置。Abstract: Finite element analysis will be chosen to do the anti-seismic calculation of large natural draft cooling tower in most conditions.Due to the large size of cooling tower, however, it will take a long time to calculate with a fine meshed modal.At the same time, a thin meshed modal will not guarantee the accuracy of the results. In this paper, methods of finite element analysis with a fine meshed modal which focus on the week part of the structure is proposed. It is based on the holistic finite element analysis of a large natural draft cooling tower.This paper proves that deformation of the cooling tower appears mainly on the pillars.
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Keywords:
- large natural draft cooling tower /
- anti-seismic /
- simulation
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