钢结构模块化单元吊装受力性能分析

MECHANICAL PROPERTIES ANALYSIS ON LIFTED MODULAR UNITS OF STEEL STRUCTURE

利用有限元分析软件,选取2种典型的钢结构模块单元进行吊装数值模拟,分析吊点位置的变化对模块单元的变形和应变能的影响,确定典型钢结构模块化单元的吊点位置;根据模块化单元在吊装过程中的传力路径,确定模块化单元吊装计算简图,结合力学分析,提出了确定模块化单元吊点位置的理论计算方法。研究表明:吊点位置的不同对模块化单元的应变和整体应变能影响较大,提出的吊点位置理论计算结果与数值模拟计算结果吻合较好,该方法可为制定合理的钢结构模块化单元吊装方案提供理论依据。

Two kinds of typical modular units of steel structure were selected and simulated in the lifting process by using the finite element analysis software. The effect of the change of the lifting point location on deformation and strain energy of modular units of steel structure were analyzed. The lifting point location of typical modular units of steel structure was determined. According to the force transmission path in the process of modular units lifting,the lifting calculation diagram was determined. Combining mechanics analysis,the theoretical calculation method of lifting position of module unit was proposed. The results showed that the changes of lifting point location had a great influence on the strain and the whole strain energy of modular units. The theoretical calculated results had a good agreement with the simulated results,and the method could provide theoretical basis for the reasonable lifting scheme of modular units of steel structure.