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目前拱支结构在大跨度空间结构领域得到广泛应用.弦支穹顶叠合拱结构作为一种典型的拱支结构形式,已被山东茌平体育馆所采用,跨度达到196m.本文基于多点激励下的地震响应时程分析,研究了大跨度弦支穹顶叠合拱结构的行波效应.分析结果显示:当地震波速分别为300m/s、800m/s、1200m/s时,相应的地震行波效应系数分别为10.30、4.78、3.56,由此可见,对于大跨度弦支穹顶叠合拱而言,其行波效应较为显著,建议设计时适当考虑.
At present, arch structure is widely used in the field of long-span space structure.As a typical form of arch structure, the arch structure of chordal dome has been adopted by Shandong Pingping Gymnasium, reaching a span of 196m.In this paper, , The traveling wave effect of long-span suspend-dome composite arch structures is studied.The results show that when the seismic velocities are 300m / s, 800m / s and 1200m / s respectively, the corresponding seismic traveling wave The effect coefficients are 10.30, 4.78 and 3.56, respectively. Therefore, the traveling wave effect is more significant for the long-span suspend-dome superimposed arch, so proper consideration should be given to the design.