蜂窝单撑杆型索穹顶的构形及预应力态的简捷计算法  

Study on the Configuration and Prestressing Distribution Simplified Calculation Method of Honeycomb-Type Cable Dome with Single Strut

作　　者：董石麟[1] 郑晓清 涂源 陈伟刚 DONG Shilin;ZHENG Xiaoqing;TU Yuan;CHEN Weigang(Space Structures Research Center,Zhejiang University,Hangzhou 310058,China;The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310058,China;Zhejiang Southeast Space Frame Co.,Ltd.,Hangzhou 311200,China)

机构地区：[1]浙江大学空间结构研究中心,杭州310058 [2]浙江大学建筑设计研究院有限公司,杭州310058 [3]浙江东南网架股份有限公司,杭州311200

出　　处：《建筑钢结构进展》2020年第4期1-9,共9页Progress in Steel Building Structures

基　　金：国家自然科学基金(51478420)。

摘　　要：研讨了一种新型的蜂窝单撑杆型索穹顶结构,它的几何构形为上弦索,是一种蜂窝形网格布置,整个结构仍属于“拉索海洋和压杆孤岛”张拉整体的Fuller构想,但并不要求压杆垂直于水平面,而在径向平面内有一倾角,故可称为蜂窝单撑杆型索穹顶结构。采用节点平衡方程,对蜂窝单撑杆型索穹顶结构的预应力态提出了简捷分析法,详细推导了预应力索杆内力的一般性递推计算公式,并根据若干参数给出了大量的算例计算结果,以了解索穹顶预应力态的分布规律和受力特性。研究工作可为索穹顶结构的选型和设计提供参考。A novel single-strut honeycomb-type cable dome,in which upper chords form a honeycomb-shaped grid structure,is discussed in this paper.It follows the Fuller's Idea that tensegrity is the ocean of tensile cables and island of compressed strut,and it does not require the strut to be perpendicular to horizontal plane,while there is an angle of inclination in the radial plane.The simplified calculation formulas are presented to determine the prestressing distribution of honeycomb-type cable dome based on the equilibrium equation of each nodal point.The calculation table and many examples of cable dome structures with different parameters are given to fully understand the prestressing distribution and the mechanical behavior of honeycomb-type cable dome.This study can provide reference for the type selection and design of cable domes.

关 键 词：蜂窝单撑杆型索穹顶 结构构形 预应力态 简捷计算法 受力性能 计算表格 

分 类 号：TU393.3[建筑科学—结构工程]