{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T13:23:44Z","timestamp":1762867424242,"version":"3.41.2"},"reference-count":31,"publisher":"Emerald","issue":"3","license":[{"start":{"date-parts":[[2018,6,11]],"date-time":"2018-06-11T00:00:00Z","timestamp":1528675200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJSI"],"published-print":{"date-parts":[[2018,6,11]]},"abstract":"<jats:sec><jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title><jats:p>The purpose of this paper is to investigate the fatigue performance of a welded detail from a composite steel-concrete railway twin girder bridge caused by a passenger train circulating at varying speeds, by identifying the dynamic amplification scenarios induced by resonance. For this purpose, the hotspot stress method is used, instead of the traditional nominal stress methods.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title><jats:p>This paper assesses the fatigue behavior of a welded connection considering critical stress concentration locations (hotspot). Finite element analysis (FEA) is applied, utilizing both a global and a local submodel, made compatible by displacements field interpolation. The dynamic response is obtained through the modal superposition method. Stress cycles are extracted with the rainflow counting method and the fatigue damage is calculated with Palmgren-Miner\u2019s rule. The feasibility of five submodels with different mesh densities, i.e. 1, 2, 4, 8 and 20\u2009mm is verified.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Findings<\/jats:title><jats:p>An increase in the fatigue damage due to the resonance effect was found for the train traveling at a speed of 225\u2009km\/h. A good agreement between the computed fatigue damage for the submodels is achieved. However, a non-monotonic hotspot stress\/fatigue damage vs mesh density convergence was observed with a peak observed for the 4\u2009mm model, which endorses the mesh sensitivity that could occur when using the surface stress extrapolation detailed rules specified in the standards for the hotspot stress method.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title><jats:p>Advanced dynamic analyses are proposed to obtain local stresses in order to apply a local method for the fatigue assessment of a bridge\u2019s structure subjected to high-speed railway traffic on the basis of the mode superposition technique resulting in much less computing times.<\/jats:p><\/jats:sec>","DOI":"10.1108\/ijsi-11-2017-0061","type":"journal-article","created":{"date-parts":[[2018,5,10]],"date-time":"2018-05-10T07:09:35Z","timestamp":1525936175000},"page":"337-354","source":"Crossref","is-referenced-by-count":9,"title":["Fatigue assessment of a high-speed railway composite steel-concrete bridge by the hot-spot stress method"],"prefix":"10.1108","volume":"9","author":[{"given":"Guilherme","family":"Alencar","sequence":"first","affiliation":[]},{"given":"Gon\u00e7alo","family":"Ferreira","sequence":"additional","affiliation":[]},{"given":"Ab\u00edlio M.P.","family":"de Jesus","sequence":"additional","affiliation":[]},{"given":"Rui","family":"Cal\u00e7ada","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"year":"2015","key":"key2020092812124278500_ref001","article-title":"Advanced methodologies for the assessment of the fatigue behaviour of railway bridges"},{"key":"key2020092812124278500_ref002","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1016\/j.ijfatigue.2015.07.002","article-title":"An efficient methodology for fatigue damage assessment of bridge details using modal superposition of stress intensity factors","volume":"81","year":"2015","journal-title":"International Journal of Fatigue"},{"key":"key2020092812124278500_ref003","unstructured":"Alencar, G., Cal\u00e7ada, R., Silva, J.G.S. and Jesus, A.M.P. 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