内填散料的钢框架非线性分析

对工业应用中定型化的分馏塔保冷箱进行了非线形分析，推导了无侧移情况下和有侧移情况下内填料作用的计算模式及分析方法．根据分馏塔保冷箱的特点，认为内填料对结构的作用与变密度有关，推导了无水平位移下的相关公式；对此结构在有水平位移下内填料的发育进行仿真分析，并将内填料的作用与结构的楼层柱的旋转角建立联系；最后根据得到的结论对分馏塔保冷箱在风与内填料作用下进行了非线性分析，得到结构的极限承载力．

Non-linear analysis of steel-frame with bulk inside

The nonlinear analysis of the standard cold insulation box of fractionating tower in industrial use was presented and the calculating model and analytic method were deduced under the load of inner-filling in the condition of having and not having lateral-displacement. According to the characteristics of the cold insulation box of Fractionating tower, it is considered that the effect of inner-filling on the construction is related with the variable density, then the relative formulation in the condition of not having lateral-displacement is deduced. The simulation analysis of the growing of inner-filling in the construction having horizontal displacement was carried out and connections between the effect of inner-filling and the rotation angle of story post were established. According to the result, nonlinear finite element analysis of the fractionating tower under the effect of wind and inner-filling and the ultimate bearing capacity of the construction were given.