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采用有限单元法,建立有限元模型进行模拟计算。通过对薄壳穹顶进行不同跨度的地震作用计算,将计算得到的地震组合应力、地震组合位移进行分析,得出不同跨度的薄壳穹顶结构在受地震力作用时应力、位移变化规律。研究了这种新型结构的力学性能和应用范围,说明了有限元方法对薄壳穹顶进行分析计算的可行性;也为薄壳穹顶结构的力学性能的研究提供新的研究方法。其中薄壳穹顶结构做为空间结构的新型结构,跨度是影响它的稳定性的一个重要因素。跨度因素的研究,对薄壳穹顶结构的稳定性应用有一定的价值。
The finite element method is used to establish the finite element model for simulation calculation. By calculating the seismic action of the thin domes with different span, the calculated combination of seismic stresses and seismic displacements is analyzed, and the stress and displacement of the thin-walled dome with different span are obtained. The mechanical properties and application range of the new structure are studied. The feasibility of the finite element method for the analysis and calculation of the thin-walled dome is demonstrated. The new research method is also provided for the research of the mechanical properties of the thin-walled dome structure. Among them, the thin-shell dome structure as a new structure of the space structure, span is an important factor affecting its stability. The research on span factor has some value to the stability of the thin-walled dome structure.