On the basis of recent developments in post-tensioned multi-st orey timber buildings using un bonded tendons, this paper aimed at investigating the potential of implementing a similar technology for innovative solutions for timber bridges. In particular, several technological solutions are proposed for future development, using several different cross sections and longitudinal profiles suitable for shortto- medium bridge spans, with both internal and external longitudinal ten dons, in some cases supplemented by transverse post-tensioning. In add ition, a feasibility study of a short-span timber brid ge is presented, with longitudinally posttensioned lami nated veneer lumber (LVL) hollow core beams as an alternative to the existing concrete solution. The discussion includes a comparison between newly proposed and traditional solutions based on the evaluation of long-term post-tensioning losses, a cost analysi s and some considerations on sustainability issues.

Potential of longitudinal post-tensioning for short-to-medium span timber bridges / Palermo, Alessandro; Giorgini, Simona; Pampanin, Stefano; Buchanan, Andrew H.. - In: STRUCTURAL ENGINEERING INTERNATIONAL. - ISSN 1016-8664. - STAMPA. - 21:3(2011), pp. 349-355. [10.2749/101686611X13049248220320]

Potential of longitudinal post-tensioning for short-to-medium span timber bridges

PAMPANIN, STEFANO;
2011

Abstract

On the basis of recent developments in post-tensioned multi-st orey timber buildings using un bonded tendons, this paper aimed at investigating the potential of implementing a similar technology for innovative solutions for timber bridges. In particular, several technological solutions are proposed for future development, using several different cross sections and longitudinal profiles suitable for shortto- medium bridge spans, with both internal and external longitudinal ten dons, in some cases supplemented by transverse post-tensioning. In add ition, a feasibility study of a short-span timber brid ge is presented, with longitudinally posttensioned lami nated veneer lumber (LVL) hollow core beams as an alternative to the existing concrete solution. The discussion includes a comparison between newly proposed and traditional solutions based on the evaluation of long-term post-tensioning losses, a cost analysi s and some considerations on sustainability issues.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/822361
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