TY - JOUR
TI - Fatigue evaluation of hot spot stress in fatigue vulnerable area of bridge deck structure based on thermal energy modelling
AU - Zhao Fangqin
AU - Liao Qinghua
JN - Thermal Science
PY - 2021
VL - 25
IS - 4
SP - 3093
EP - 3101
PT - Article
AB - 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.