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Fatigue design and assessment guidelines for high-frequency mechanical impact treatment applied on steel bridges

التفاصيل البيبلوغرافية
العنوان: Fatigue design and assessment guidelines for high-frequency mechanical impact treatment applied on steel bridges
المؤلفون: al-Karawi, Hassan, 1993
المصدر: Welding in the World, Le Soudage Dans Le Monde. In Press
مصطلحات موضوعية: Bearbetnings, yt- och fogningsteknik, Manufacturing, Surface and Joining Technology, Infrastrukturteknik, Infrastructure Engineering, Farkostteknik, Vehicle Engineering, Fatigue, Fatigue load model, IIW, Stress ratio, Design, Eurocode, Railway bridges, Road bridges, High-frequency mechanical impact, DASt, Bridge design, HFMI, Mean stress, Steel bridges
الوصف: Structural design of bridges in Europe should be carried out in accordance with Eurocode regulations. However, there is no guideline demonstrating how the fatigue design is to be conducted when high-frequency mechanical impact (HFMI) is used to enhance welded joints in steel bridges. The aim of this paper is to present the different design rules and equations and apply them to some example bridges enhanced by HFMI treatment. Fatigue verification of some welded details in these bridges is carried out via either “damage accumulation” or “λ-coefficients” methods in the Eurocode. Four fatigue load models are used in the fatigue verification (FLM3 and FLM4 for road bridge assessment, and LM71 and traffic mix, for railway bridge assessment). The effect of steel grade, mean stresses, self-weight, variation in stress ratios, and maximum stress on the treatment efficiency is considered in both examples. It is found that HFMI treatment causes a significant increase in fatigue lives in all studied cases.
وصف الملف: electronic
URL الوصول: https://research.chalmers.se/publication/535425
https://research.chalmers.se/publication/535425/file/535425_Fulltext.pdf
قاعدة البيانات: SwePub
الوصف
تدمد:18786669
00432288
DOI:10.1007/s40194-023-01522-6