Fatigue Life Evaluation of Welded Railway Bridges Based on Field Measurements
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Bibliographic Details
| Author(s): |
Ivan Lukačević
Darko Dujmovic Boris Androic |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014 | ||||
| Published in: | IABSE Symposium Madrid 2014 | ||||
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| Page(s): | 2789-2796 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2014 | ||||
| DOI: | 10.2749/222137814814070280 | ||||
| Abstract: |
Fatigue life evaluation of existing bridges is an important task especially for bridges reaching design life or subjected to increasing traffic volume. This paper presents probabilistic fatigue life assessment of welded railway bridge based on field measurement and numerical methods which can be applied to any fatigue sensitive structure. Due to the unavailability of details for setting up measuring devices, scope of the measurements etc., it is not always possible conduct measurements for all critical details. Field measurements in some critical details in the structure can give the basis for reliability analyses and fatigue life assessment in all critical details. In this paper fatigue life is defined as time when critical detail in structure reaches target reliability level. Fatigue reliability analysis is based on S-N concept and Miner’s linear damage hypothesis taking into account model uncertainties and different probability density functions of stress ranges. |
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| Keywords: |
fatigue reliability finite element method (FEM) fatigue life field measurements
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