新型马鞍形索杆张力结构研究  

Research of new saddle-shaped cable-strut structure

作　　者：冯越 袁行飞[2,3] 艾科热木江·塞米 董永灿 FENG Yue;YUAN Xingfei;AKRAM Samy;DONG Yongcan(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310000,China;Center for Balance Architecture,Zhejiang University,Hangzhou 310000,China;The Architectural Design and Research Institute Co.Ltd.,Zhejiang University,Hangzhou 310000,China)

机构地区：[1]浙江大学建筑工程学院,浙江杭州310000 [2]浙江大学平衡建筑研究中心,浙江杭州310000 [3]浙江大学建筑设计研究有限公司,浙江杭州310000

出　　处：《华中科技大学学报（自然科学版）》2022年第2期7-12,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51878600).

摘　　要：提出一种基于马鞍面的新型索杆张力结构拓扑,结构整体形态更加稳定.进一步对形态分析中的迭代找力方法进行优化改进,在保证计算精度的前提下提高计算效率.应用改进的迭代找力方法对提出的新型马鞍形索杆张力结构进行了预应力设计.对跨度为36 m的马鞍形索杆张力结构进行静动力性能分析,计算结果显示结构在0.8 kg/m^(2)面荷载作用下,最大节点位移小于跨度的1/250,最大索应力小于索抗拉强度的50%.研究结果表明:所提出的马鞍形索杆张力结构在拓扑构型上具有独特的优势,以及较好的力学性能,能应用在实际工程中.Based on the saddle surface,a saddle-shaped cable-strut structure with innovative topology was proposed,which overall shape is more stable.Based on the iterative force-finding method in shape analysis,an optimized method was proposed and improved,and the calculation efficiency increases under the premise of ensuring the accuracy of calculation.The improved iterative force-finding method was used to carry out the pre-stress design of the proposed saddle-shaped cable-strut structure.The static and dynamic performances of a saddle-shaped cable dome with a span of 36 m was performed.Calculation results show that the maximum node displacement is less than 1/250 of the span and the maximum cable stress is less than 50%of the tensile strength under a surface load of 0.8 kg/m^(2).Research indicates that the proposed saddle-shaped cable-strut structure has its advantages in topological configuration and satisfied properties,which means it can be applied in actual projects.

关 键 词：马鞍形索杆张力结构 负高斯曲面 拓扑构型 改进的迭代找力法 整体预应力设计 

分 类 号：TU394[建筑科学—结构工程]