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为研究刚性索穹顶结构的性能,以跨度为60m的肋环型刚性索穹顶结构为例,分别对其进行在满跨和半跨均布荷载作用下的静力性能和动力性能分析,得到结构的固有频率及相应的振型,并与相应的肋环型索穹顶结构相比较,总结了杆件内力和位移的变化规律。结果显示在满跨均布向下荷载作用下,肋环型刚性索穹顶结构的性能较为优越;在半跨均布向下荷载作用下,肋环型刚性索穹顶结构的性能略有改善;在满跨及半跨均布向上荷载作用下,两者性能较为相似。肋环型刚性索穹顶并没有显著改变现有肋环型索穹顶的动力性能。
In order to study the performance of the rigid cable dome structure, taking the 60 m-span rib ring-shaped rigid cable dome as an example, the static and dynamic performances of the rigid cable dome under uniform and semi- The natural frequencies and the corresponding modes of vibration, and compared with the corresponding rib ring cable dome structure, summarizes the variation of the internal force and displacement of the rod. The results show that the performance of the rib-ring-type rigid cable dome structure is superior under the full-span uniform downward-facing load. The performance of the rib-ring type rigid cable dome structure is slightly improved under the load of half-span uniform load. Full span and semi-span uniform upward load under the action of the two are more similar. The ribbed rigid cable dome does not significantly change the dynamic performance of the existing ribbed cable dome.