结构跨度对非一致输入下大跨空间网格结构地震响应的影响

The influence of structural span on seismic response of space lattice structures under non-uniform excitation

以非一致输入法对不同跨度的大跨空间网格结构进行竖向和水平地震计算,综合分析不同跨度下杆件内力、危险杆件的数量以及不同非一致输入方法引起的结构响应差异,最终分别推断出在竖向与水平地震作用下可以不考虑空间相关性的结构最小跨度.

Several space lattice structures with various span are studied under non-uniform excitation. Based on the force of members, the number of dangerous members and the difference of structures response caused by variant non-uniform excitations, the smallest span of the structure which needn't take into account the spatial correlativity under horizontal or vertical earthquake is deduced.