单双撑杆交错式索穹顶结构静力性能分析

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摘要针对传统索穹顶结构存在的脊索易松弛、网格划分不均、环向刚度较弱等问题，提出了一种单双撑杆交错式索穹顶结构。建立Midas模型分析了该结构在全跨和半跨均布竖向荷载作用下的受力特性，进一步研究了结构基本参数对单双撑杆交错式索穹顶结构的内力和位移的影响规律。分析结果表明，单双撑杆交错式索穹顶结构在全跨和半跨均布竖向荷载作用下具有良好的静力性能，各索均不易松弛，结构整体刚度大。给出了初始预应力和矢跨比的建议取值范围，为单双撑杆交错式索穹顶结构的工程设计和应用提供参考依据。

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	张爱林1
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	袁文俊1
	张艳霞1
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	朱莉娜1
	熊家鑫1

关键词 ：单双撑杆交错式索穹顶, 静力性能, 参数分析, 初始预应力, 矢跨比, 撑杆高度

Abstract：In view of the problems existing in the traditional cable dome structure, such as easy slack of notochord, uneven meshing, weak circumferential stiffness, an alternated cable dome with single and double brace struts structure was proposed. The Midas model was formulated to analyze the mechanical characteristics of the structure under the action of full-span and half-span uniformly distributed vertical loads, and the influence of fundamental parameters of the structure on the internal force and displacement was further explored. The results show that the alternated cable dome with single and double brace struts structure reveals superior static performance and large overall stiffness,the cables are hardly subjected to slack simultaneously. The recommended ranges of initial prestress and rise-to-span ratio were given, which provided a reference for the engineering design and application of the alternated cable dome with single and double brace struts structure.

Key words： alternated cable dome with single and double brace struts static performance parameter analysis initial prestress;rise-to-span ratio strut height

收稿日期: 2021-04-08 出版日期: 2022-06-28

引用本文:

张爱林1,2,3，袁文俊1，张艳霞1,2，朱莉娜1，熊家鑫1. 单双撑杆交错式索穹顶结构静力性能分析[J]. 振动与冲击, 2022, 41(12): 321-330.
ZHANG Ailin1，2，3， YUAN Wenjun1， ZHANG Yanxia1，2， ZHU Lina1， XIONG Jiaxin1. Static performance analysis of alternated cable dome with single and double brace struts. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(12): 321-330.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I12/321

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