Form-finding analysis for a new type of cable-strut tensile structures generated by semi-regular tensegrity

被引：17

作者：

Lu, JinYu ^{[1
,2
]}

Dong, Xiao ^{[2
]}

Zhao, XiLei ^{[3
]}

Wu, XiaoLong ^{[2
]}

Shu, GanPing ^{[1
,2
]}

机构：

[1] Southeast Univ, Minist Educ, Key Lab Concrete & Prestressed Concrete Struct, Nanjing 210096, Jiangsu, Peoples R China

[2] Southeast Univ, Sch Civil Engn, Nanjing, Jiangsu, Peoples R China

[3] Johns Hopkins Univ, Dept Civil Engn, Baltimore, MD 21218 USA

来源：

ADVANCES IN STRUCTURAL ENGINEERING | 2017年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

cable dome; form finding; half-octahedron tensegrity; semi-regular tensegrity; tensegrity torus; SYSTEMS; STRESS; DESIGN;

D O I：

10.1177/1369433216661335

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A tensegrity structure is a type of self-balancing tensile structure, which consists of tension cables surrounding compression struts. Based on the geometry and topology of the classic half-octahedron tensegrity, this article presents a form-finding analysis of semiregular tensegrity units using singular value decomposition of the equilibrium matrix. We propose the design formulas for the unit geometric transformation, obtain its internal self-stress modes and inextensional mechanism modes, and verify its geometric stability. Then, we devise a design method and compute the overall feasible self-stress of a tensegrity torus. A novel cable-strut tensile structural system is generated through combining a tensegrity torus and a Levy-type cable dome. Finally, a physical model is constructed to verify the feasibility of this structural system. This work enriches existing forms of tensegrity structures and contributes to further practical applications of tensegrity systems.

引用

页码：772 / 783

页数：12