Advanced Steel Construction

Vol. 14, No. 4, pp. 606-619(2018)


STATIC AND KINEMATIC BEHAVIOUR

OF A FOLDABLE TRUSS ROOF STRUCTURE

 

J.G. Cai1, 2*, Z. Ye1, X.Y. Wang1, Y.X. Xu3 and J. Feng1

1 Key Laboratory of C & PC Structures of Ministry of Education, National Prestress Engineering Research Center, 

Southeast University, Nanjing 210096, China

2 Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xian 710126 ,China

3 Department of Mechanical Engineering, The University of Sheffield, Sheffield S10 2TN, UK

*(Corresponding author: Email: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.  / This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 18 June 2017; Revised: 18 June 2017; Accepted: 19 October 2017

 

DOI:10.18057/IJASC.2018.14.4.5

 

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ABSTRACT

In this paper, a type of foldable truss structure formed by four-bar linkages is firstly proposed as a retractable roof. Then the mechanical behavior of a fully closed roof system is  studied. The results show that the member buckling has a great effect on the ultimate capacity of foldable truss structures. The failure load of the structure is smaller if buckling is considered. It is also found that the effect of imperfections on the failure load of the foldable structure is not significant. Furthermore, the stress variation during the folding is small. However, when initial imperfections are introduced, the maximal member stress during the motion increases greatly, which is almost close to yield stress.

 

KEYWORDS

Foldable structure, four-bar linkage, moving process, mechanical behaviour, cables, imperfection


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