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Abstract

Reticulated self-stressed space structures developped by R.B.Fuller as "Tensegrity Systems" are non conventional systems in which "a discontinuous set of compressive components interacts with a continuous set of tensile components to define a stable volume in space".

These systems have mainly been studied under the geometrical point of vue and they constitute now a field of study for mathematicians and structural engineers. We developed a comprehensive set of mathematical models: definition of the relational structure by the theory of graphs, form-finding by application of dynamic relaxation and statical and dynamical behaviour. We are able now to use the principle of tensegrity systems in the constitution of architectural realizations.

Our contribution shows how double layer systems can be achieved on the basis of a square prismatic tensegrity system. Equilibrium of the modulus, possible combinations, geometrical features, technical measures are first described. Simple and double curvature systems can be obtained with an elementary modulus: the length of the compressed members is always the same; the geometry is the result of the choice of the cable length. Some drawings illustrate this proposed system for double-layer constructions; the folding principle is demonstrated.

The main-interest of Tensegrity Systems is to add a prestress to lightweight cable structures without using heavy anchorage devices. With suitable folding principles, these systems will be of main interest in architectural applications specially for "ephemeral architecture" and for orbital stations needed in the space conquest.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 7/8 PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON THE DESIGN AND CONSTRUCTION OF NON-CONVENTIONAL STRUCTURES Edited by: B.H.V. Topping Paper XIV.2 Tensegrity Systems for Double-Layer Space Structures R. Motro Department of Civil Engineering, University Institute of Technology - Montpellier, France doi:10.4203/ccp.7.14.2 purchase the full-text of this paper Full Bibliographic Reference for this paper R. Motro, "Tensegrity Systems for Double-Layer Space Structures", in B.H.V. Topping, (Editor), "Proceedings of the International Conference on the Design and Construction of Non-Conventional Structures", Civil-Comp Press, Edinburgh, UK, pp 43-51, 1987. doi:10.4203/ccp.7.14.2 Abstract Reticulated self-stressed space structures developped by R.B.Fuller as "Tensegrity Systems" are non conventional systems in which "a discontinuous set of compressive components interacts with a continuous set of tensile components to define a stable volume in space". These systems have mainly been studied under the geometrical point of vue and they constitute now a field of study for mathematicians and structural engineers. We developed a comprehensive set of mathematical models: definition of the relational structure by the theory of graphs, form-finding by application of dynamic relaxation and statical and dynamical behaviour. We are able now to use the principle of tensegrity systems in the constitution of architectural realizations. Our contribution shows how double layer systems can be achieved on the basis of a square prismatic tensegrity system. Equilibrium of the modulus, possible combinations, geometrical features, technical measures are first described. Simple and double curvature systems can be obtained with an elementary modulus: the length of the compressed members is always the same; the geometry is the result of the choice of the cable length. Some drawings illustrate this proposed system for double-layer constructions; the folding principle is demonstrated. The main-interest of Tensegrity Systems is to add a prestress to lightweight cable structures without using heavy anchorage devices. With suitable folding principles, these systems will be of main interest in architectural applications specially for "ephemeral architecture" and for orbital stations needed in the space conquest. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £78 +P&P)
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