Seismic responses of two typical large-span structures to uniform vertical seismic excitation are investigated and the effects of multi-support vertical excitation on the responses are checked.
以两种典型空间结构为研究对象，考察了竖向地震作用下结构的地震反应以及竖向多点输入对结构地震反应的影响。
Therefore, it is necessary to consider the influence of the multi-support excitation in the seismic response analysis for the reasonable seismic design of such long-span structures.
因此，为合理地进行这类结构的抗震设计，在结构抗震分析中考虑地震动的多点输入的影响是非常必要的。
The mirror base and the support have single-point connection structures or multi-point connection structures to adjust the direction of the mirror surface.
镜座与支架为单点连接结构或多点连接结构，以调节镜面的方向。
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