@Article{sdhm.2020.08997,
AUTHOR = {Rongfeng Chen, Changqing Miao},
TITLE = {Fatigue Performance Evaluation for Welded Details in Orthotropic Steel Deck Bridges Using Multi-Scale Finite Element Method},
JOURNAL = {Structural Durability \& Health Monitoring},
VOLUME = {14},
YEAR = {2020},
NUMBER = {3},
PAGES = {205--228},
URL = {http://www.techscience.com/sdhm/v14n3/40135},
ISSN = {1930-2991},
ABSTRACT = {In order to study the fatigue properties of rib-to-deck welded connection
and rib-to-rib welded connection in orthotropic steel bridge decks, a multi-scale
finite element model was set up to analyze the stress distribution characteristics
and the load test was conducted on the Taizhou Yangtze River Bridge. Comparing
the vehicle test results with the multi-scale finite element model results to verify the
accuracy of the finite element simulation for the stress response of two welded
details. The results indicated that: The stress at the rib-to-deck welded connection
and the rib-to-rib welded connection are the bending stress and the membrane
stress, respectively; the stress response of the two welded connection has strong
local characteristics; the lateral stress influence line of the two welded connection
is relatively short and the length of the lateral stress influence line is greatly affected
by the longitudinal ribs; increasing the thickness of the roof and longitudinal ribs
can reduce the stress response and improve the stress performance of the heavy
lanes. For the two welded details, the fatigue damage increment of the ordinary lane
is greater than the heavy lane. The thickened roof and longitudinal ribs at the
position of the heavy lane still cannot balance the fatigue damage caused by the
heavy truck. Therefore, it is necessary to strictly control the fatigue effect of
overloaded vehicles on steel box girders.},
DOI = {10.32604/sdhm.2020.08997}
}