地震作用下烟气脱硫吸收塔稳定计算分析

The Buckling Analysis of Thermal Power Plant Smoking Desulfuration Absorber Tower under Earthquakes

建立了烟气脱硫吸收塔的三维有限元分析模型,采用时程分析法计算出了El-Centro波和Taft波作用下的压应力,用壳体屈曲问题的状态方程计算出了烟气脱硫吸收塔局部屈曲的临界应力,结果发现,在多遇地震下塔体均不会发生稳定破坏,罕遇地震下一些应力集中部位超过了临界承载力.

By establishing the finite element 3 - D model of smoking desulfuration absorber tower and by the time - history analysis, this paper analyzes the compressive stress, El - Centro and Taft wave as the excitation. The structure of the desulfuration meets the demand of the stability and will not lose steadiness under frequent earthquakes and in unusual earthquakes the compressive stress exceeds critical bearing capacity in the stress concentration position.