Alternative layout for the prestressing of slab bridges

Stavridis, LT

dc.contributor.author	Stavridis, LT	en
dc.date.accessioned	2014-03-01T01:16:07Z
dc.date.available	2014-03-01T01:16:07Z
dc.date.issued	2001	en
dc.identifier.issn	10840702	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13924
dc.subject.other	Bending moments	en
dc.subject.other	Prestressed materials	en
dc.subject.other	Prestressing	en
dc.subject.other	Reinforcement	en
dc.subject.other	Stress analysis	en
dc.subject.other	Structural analysis	en
dc.subject.other	Structural loads	en
dc.subject.other	Bending resistances	en
dc.subject.other	Slab bridges	en
dc.subject.other	Bridges	en
dc.title	Alternative layout for the prestressing of slab bridges	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)1084-0702(2001)6:5(324)	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)1084-0702(2001)6:5(324)	en
heal.publicationDate	2001	en
heal.abstract	On the basis of a statically admissible moment redistribution in rectangular and skew slab bridges with free edges parallel to the bridge axis, an alternative positioning of the prestressing tendons concentrated at the outer edge regions is studied, with regard to the fulfillment of the respective strength conditions. The moment redistribution is adapted to the available bending resistances across the slab and is accomplished not only through the inherent statically indeterminate plate response, but also through the use of an additional fictitious loading achieving a self-equilibrating state-of-stress condition. It is shown that with the selection of appropriate values for some nondimensionalized design parameters that are introduced herein, a substantial economy in the use of prestressing steel can be attained as compared to the uniform arrangement of prestressing tendons across the whole slab, resulting in a clear savings in total material cost. The partial prestressing that has been implicitly adopted shows an acceptable performance at the service level.	en
heal.journalName	Journal of Bridge Engineering	en
dc.identifier.doi	10.1061/(ASCE)1084-0702(2001)6:5(324)	en
dc.identifier.volume	6	en
dc.identifier.issue	5	en
dc.identifier.spage	324	en
dc.identifier.epage	332	en