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摘要
Publisher Summary
The chapter discusses the geometrical optimum design and the anti-seismic analysis of double-layer grid shell structures. The characteristic of free vibration of grid shell structures with respect to geometric parameter is studied in the chapter. The variations of eigenfrequency of shell structures with the ratio of height-to-span, span, grid division frequency, and thickness of a shell are discussed in the chapter. The Newmark method is used to calculate the stresses and displacements of grid shell structures under earthquake action. The analysis results show that at the specified span, the eigenfrequency of the structure will increase with the increase of the height-to-span ratio at beginning and then decrease afterwards. At the specified span and height-to-span ratio, the eigenfrequency of the structure increases little with the increase of the thickness and the grid division frequency of the grid shell structures.
