Barrel-Vault Space Trusses Shaped by Posttensioning
Publication: Journal of Structural Engineering
Volume 121, Issue 12
Abstract
This paper is primarily concerned with the formation of barrel-vault space trusses derived from a flat configuration by posttensioning. To obtain a fairly general picture of the shape-formation process by means of posttensioning, both gently and sharply curved barrel-vault models are studied. The structures are devised to be near mechanisms during the posttensioning operation. They are considered to be near mechanisms because only the flexural stiffness of the top chords provides any appreciable resistance to deformation apart from friction and self weight. Therefore, no appreciable axial force is induced in the members of the structures during the shape-formation process. The result of experimental and theoretical work on the shape formation of barrel-vault space trusses by means of posttensioning is presented here. The shape-formation process, referred to as self-erection, can lead to significant economies in the construction of large-span lightweight structures by eliminating or minimizing the need for scaffolding and heavy cranes.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Dehdashti, G. (1994). “Shape formation and ultimate load behaviour of post-tensioned space trusses,” PhD thesis, Univ. of Wollongong, NSW, Australia, 29–119.
2.
Duncan, J. P., and Duncan, J. L. (1982). “Folded developables.”Proc. Roy. Soc., A 383, London, U.K., 191–205.
3.
Hanaor, A., and Levy, R. (1985). “Imposed lack of fit as a means of enhancing space truss design.”Int. J. Space Struct. 1, 147–154.
4.
Hanaor, A., Levy, R., and Rizzuto, N. (1987). “Investigation of prestressing in double-layer grids.”Proc., IASS Symp., Elsevier Science Publishers, Amsterdam, The Netherlands, 3, 73–80.
5.
Hoe, T. H., and Schmidt, L. C. (1986). “Ultimate load behaviour of a barrel vault space truss.”Int. J. Space Struct. 2, U.K., 1–10.
6.
Schmidt, L. C. (1985). “Single-chorded plane space trusses.”Int. J. Space Struct. 1, 69–74.
7.
Schmidt, L. C., and Dehdashti, G. (1993a). “Curved space trusses formed from single-chorded planar space trusses.”Proc., 13th Australasian Conf. on Mech. of Struct. and Mat., Univ. of Wollongong, Australia, 2, 777–784.
8.
Schmidt, L. C., and Dehdashti, G.(1993b). “Shape creation and erection of metal structures by means of post-tensioning.”Space Struct. 4, London, U.K., 1, 69–77.
9.
Whitworth, V. P. (1981). Space deck system analysis, design and construction of double-layer grids . Z. S. Makowski, ed., Applied Science Publishers, London, England, 313–330.
Information & Authors
Information
Published In
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Dec 1, 1995
Published in print: Dec 1995
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.