Prestressed Steel Grid Erected with Bent Forms

by Oren Vilnay, Lect.; Dept. of Civ. and Struct. Engrg., Univ. College, Cardiff, Wales,
Avraham Ben-Arroyo, Sr. Lect.; Faculty of Civ. Engrg., Technion-Israel Inst. of Tech., Haifa, Israel,
Eliahn Racah, Research Officer; School of Architecture and Building Engrg., Univ. of Bath, Bath, England,

Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 3, Pg. 579-590

Document Type: Journal Paper


A new method for constructing one-layer steel grids erected by prestressing with the aid of recoverable bending forms is presented, followed by an approximate structural analysis. The grid elements are joined together by cables passing through them. By stressing other cables the flat grid erects itself to a vault, the shape of which is determined by the recoverable bending forms. The preliminary analysis covers the erection stages and dead, snow and wind loads during service. Using the results of a design example it is predicted that this new method, which dispenses with special joints on the one hand, and with high scaffolding and erection cranes on the other, will not require excessive amounts of steel.

Subject Headings: Cables | Prestressing | Cold-formed steel | Grid systems | Bents (structural) | Bending (structural) | Snow loads | Wind loads

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