Improved assessment methods for static and fatigue resistance of old metallic railway bridges

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Cremona, ChristianTechnical Centre for Bridge Engineering, Service d'Etudes sur les Transports, les Routes et leurs Aménagements (SETRA), 110 rue de Paris, F-77171 Sourdun, France (author)

Improved assessment methods for static and fatigue resistance of old metallic railway bridges

Article/chapterEnglish2013

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2013
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LIBRIS-ID:oai:DiVA.org:ltu-7380
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7380URI
https://doi.org/10.1061/(ASCE)BE.1943-5592.0000466DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Validerad; 2013; 20120823 (ysko)
A large number of the bridges in the European railway networks are metallic bridges. The increasing volume of traffic and axle weight of trains mean that for many structures the loads today are much higher than those envisaged when they were designed. This paper presents a summary of the different recommendations and advices proposed in "Guidelines for Load and Resistance Assessment of Existing European Railway Bridges" of the European Union founded project "Sustainable bridges" for assessing old metal railway bridges. The knowledge of the material properties of existing metal bridges is essential for the resistance assessment and the determination of the remaining lifetime of old metallic bridges. Furthermore, old bridges require more exact and efficient assessment methods that call for a precise description of the material. Among the problems met in metal bridges and material properties estimation, fatigue is the most common cause of failure. To be able to make accurate assessments of existing bridges, it is important to know the behaviour of bridges exposed to fatigue, and how the old materials behave due to cyclic exposure. The main question answered herein is how to make a safe estimation concerning the remaining life in service. The possible traffic load on steel rail bridges is usually limited by the fatigue resistance, but for certain situations the static resistance has also to be checked. Most design rules for steel structures, for instance those in Eurocode 3, are applicable also to riveted structures. However, some information is missing on how to deal with the special case that elements are intermittently connected in contrast welded structures that are connected continuously. As the traditional methods for assessing the resistance of steel bridges are based on elastic analysis, a method for utilizing a limited redistribution of bending moments based on beam theory is proposed.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Husbyggnad hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Building Technologies hsv//eng
TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Infrastrukturteknik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Infrastructure Engineering hsv//eng
Stålbyggnad
Steel Structures
Structural Engineering
Konstruktionsteknik

Added entries (persons, corporate bodies, meetings, titles ...)

Eichler, BjornRheinisch-Westfaelische Technische Hochschule (RWTH) Institute of Steel Construction, Mies-van-der-Rohe-Straße 1, D-52074 Aachen, Germany (author)
Johansson, BerntLuleå tekniska universitet,Byggkonstruktion och -produktion(Swepub:ltu)bernt1 (author)
Larsson, TobiasLuleå tekniska universitet,Byggkonstruktion och -produktion(Swepub:ltu)toblar (author)
Technical Centre for Bridge Engineering, Service d'Etudes sur les Transports, les Routes et leurs Aménagements (SETRA), 110 rue de Paris, F-77171 Sourdun, FranceRheinisch-Westfaelische Technische Hochschule (RWTH) Institute of Steel Construction, Mies-van-der-Rohe-Straße 1, D-52074 Aachen, Germany (creator_code:org_t)

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In:Journal of Bridge Engineering18:11, s. 1164-11731084-07021943-5592

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