THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Fangqin Zhao

,

Qinghua Liao

FATIGUE EVALUATION OF HOT SPOT STRESS IN FATIGUE VULNERABLE AREA OF BRIDGE DECK STRUCTURE BASED ON THERMAL ENERGY MODELLING

ABSTRACT
The paper takes a Yangtze River bridge as the object, establishes a finite element model of the highway orthotropic steel deck structure, calculates and analyzes the fatigue stress of specific structural details based on the hot spot stress method, and obtains the fatigue vulnerable area of this type of bridge deck structure. Based on the bridge's actual use, the thesis calculates and evaluates the fatigue life of the typical welding details of the bridge deck based on the American Highway Bridge Design Code. The results show that the fatigue stress amplitude calculation of the five types of fatigue vulnerable structure details under the Fatigue Ⅰ and Fatigue Ⅱ limit states. The values are all less than the allowable value, and the fatigue life meets the design requirements.
KEYWORDS
highway bridge, orthotropic steel bridge deck, fatigue stress, hot spot stress, fatigue assessment
PAPER SUBMITTED: 2020-12-06
PAPER REVISED: 2021-01-18
PAPER ACCEPTED: 2021-02-02
PUBLISHED ONLINE: 2021-07-31
DOI REFERENCE: https://doi.org/10.2298/TSCI2104093Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 4, PAGES [3093 - 3101]
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Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence