单双撑杆交错式索穹顶结构静力性能分析  

Static performance analysis of alternated cable dome with single and double brace struts

作　　者：张爱林 袁文俊[1] 张艳霞 朱莉娜 熊家鑫[1] ZHANG Ailin;YUAN Wenjun;ZHANG Yanxia;ZHU Lina;XIONG Jiaxin(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing100044,China;Beijing Engineering Research Center of High-rise and Large-span Prestressed Steel Structure,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学北京未来城市设计高精尖创新中心,北京100044 [3]北京工业大学北京市高层和大跨度预应力钢结构工程技术研究中心,北京100124

出　　处：《振动与冲击》2022年第12期321-330,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(51878025);长江学者和创新团队发展计划(IRT_17R06)。

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。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.

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 

分 类 号：TU394[建筑科学—结构工程]