基于Eurocode 3标准的某塔设备稳定性分析
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摘要
有限元方法较高的计算能力为其在实际应用中提供了更多可能,介绍了Eurocode 3标准中公式法和数值模拟LBA-MNA方法。通过真实案例,根据Eurocode 3标准中的公式法对轴向弯矩作用下的塔设备进行稳定性分析,并与LBA-MNA法分析结果进行比较。结果表明,通过延长单筒节来进行多筒节的失稳分析是偏保守的。
The high computational ability of the finite element method provided more possibilities for its practical application. The middle formula method in Eurocode 3 standard and the numerical simulation LBA-MNA method were introduced. Through a real case, the stability of tower equipment under axial bending moment was analyzed according to the formula method in Eurocode 3 standard, and the results were compared with those of LBA-MNA method. The results showed that it was conservative to analyze the instability of multiple cylinder joints by extending single cylinder joints.
The high computational ability of the finite element method provided more possibilities for its practical application. The middle formula method in Eurocode 3 standard and the numerical simulation LBA-MNA method were introduced. Through a real case, the stability of tower equipment under axial bending moment was analyzed according to the formula method in Eurocode 3 standard, and the results were compared with those of LBA-MNA method. The results showed that it was conservative to analyze the instability of multiple cylinder joints by extending single cylinder joints.
引文
[1]郭易,刘博.薄壁圆筒结构轴向受压失稳分析[J].四川水泥,2017(3):365.
[2]顾明剑,张其林.引入一阶屈曲模态作为初始缺陷的研究[C]//中国钢结构协会.第五届全国现代结构工程学术研讨会论文集, 2005.
[3]郑浣琪,陈冰冰,梁力锦,等. EN 1993-1-6标准汇总的壳体失稳设计方法简述[J].压力容器, 2013, 30(9):45-53.
[2]顾明剑,张其林.引入一阶屈曲模态作为初始缺陷的研究[C]//中国钢结构协会.第五届全国现代结构工程学术研讨会论文集, 2005.
[3]郑浣琪,陈冰冰,梁力锦,等. EN 1993-1-6标准汇总的壳体失稳设计方法简述[J].压力容器, 2013, 30(9):45-53.