Non-Linear Analysis and Remaining Fatigue Life of Reinforced Concrete Bridges [Elektronisk resurs] Sustainable Bridges Background document D4.5
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Plos, Mario (författare)
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Lundgren, Karin (författare)
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Rempling, Rasmus (författare)
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Gylltoft, Kent, 1945- (författare)
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Cervenka, Jan (författare)
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Thelandersson, Sven (författare)
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Elfgren, Lennart, 1942- (författare)
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Herwig, Andrin (författare)
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Brühwiler, Eugen (författare)
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Rosell, Ebbe (författare)
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Gillesen, Cecilia (författare)
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Luleå tekniska universitet Institutionen för samhällsbyggnad och naturresurser (utgivare)
- Publicerad: 2007
- Engelska 192
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Ingår i:
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- Relaterad länk:
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http://www.ltu.se/ (Värdpublikation)
Sammanfattning
Ämnesord
Stäng
- The work provides methods for non-linear structural analysis and fatigue safety evaluation in assessment of existing railway bridges. The use of non-linear analysis leads to higher load carrying capacities, but also to improved understanding of the structural response, forming a better basis for decisions in the assessment. The methods for fatigue assessment lead to increased remaining service life of reinforced concrete railway bridges. The achievements of the work are: • Models for assessment of concrete bridges by non-linear analysis are described, and examples and general recommendations for practical application of the methods aregiven. • An overview of the effect of corrosion on the bond properties has been developed through non-linear analyses and tests found in literature. Recommendations for practical assessment of anchorage capacity in corroded railway concrete bridges are presented. • The determination of reliable in-situ material properties in old concrete bridges is described,including properties for fully probabilistic analysis. A particular aim was to develop better methods to describe development of concrete properties with age and degree of hydration. • Recommendations are given regarding re-distribution of sectional forces and moments, obtained through linear structural analysis (with FEM). In a case study, a typical slab bridge was designed using different methods, and its response evaluated through nonlinearanalyses. • A good understanding of the load-carrying mechanisms in combined bending-shear-torsion gives a possibility to make more accurate assessments than with standard code methods. Methods and examples are presented. • A state-of-the-art review of fatigue behaviour of reinforced concrete railway bridges is presented and a methodology to assess the remaining fatigue life of existing reinforced concrete bridges subjected to railway traffic is developed.
Ämnesord
- Engineering and Technology (hsv)
- Civil Engineering (hsv)
- Infrastructure Engineering (hsv)
- Teknik och teknologier (hsv)
- Samhällsbyggnadsteknik (hsv)
- Infrastrukturteknik (hsv)
- Byggkonstruktion (ltu)
- Structural Engineering (ltu)
Genre
- government publication (marcgt)
Indexterm och SAB-rubrik
- Non-linear analysis of bridges
- Fatigue of concrete bridges
Inställningar
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