The influence of concrete bridge span on vehicle traffic safety
Y.J. Liang, J. Yi
Pages: 31-42
Abstract:
The dynamic loads generated on
bridges during vehicle travel are complex and varied, making it difficult to
accurately evaluate the bearing capacity of bridges under dynamic loads,
resulting in poor accuracy in analyzing the impact of concrete bridge span
size on vehicle traffic safety. Therefore, research is conducted on the
impact of concrete bridge span on vehicle traffic safety. Considering the
interaction between vehicles and bridges, a vehicle bridge coupling vibration
equation is constructed to simulate the stress state of bridges under dynamic
loads, accurately analyze the stress between concrete bridges and vehicles,
and obtain the key factors affecting the safety of vehicle passage in the
span of concrete bridges, Based on this, calculate the bearing capacity
coefficient of concrete bridge span and determine the bearing capacity of
vehicle passing bridge span, Finally, based on the bearing capacity of the
bridge span, the cumulative fatigue damage of the bridge is calculated, and
the stress ratio is used as the benchmark for bridge load limit and vehicle
traffic judgment, to achieve the study of the impact of concrete bridge span
on vehicle traffic safety. The experimental results show that the span of
concrete bridges has a certain impact on the dynamic impact coefficient, and
for concrete beam bridges with different spans, as the vehicle speed
increases, the overall trend of the impact coefficient of the fulcrum bending
moment increases, thereby affecting the safety of vehicle passage. Moreover,
the method proposed in this article can achieve a maximum estimation accuracy
of 99.8% for the maximum carrying capacity of vehicles passing through
concrete bridges, indicating that the method can accurately estimate whether
vehicles can safely pass through concrete bridges and accurately analyze
traffic safety.
Keywords: stress ratio; concrete
bridges; span size; vehicle bridge coupling vibration; bridge bearing
capacity coefficient
2025 ISSUES
2024 ISSUES
LXII - April 2024LXIII - July 2024LXIV - November 2024Special 2024 Vol1Special 2024 Vol2Special 2024 Vol3Special 2024 Vol4
2023 ISSUES
LIX - April 2023LX - July 2023LXI - November 2023Special Issue 2023 Vol1Special Issue 2023 Vol2Special Issue 2023 Vol3
2022 ISSUES
LVI - April 2022LVII - July 2022LVIII - November 2022Special Issue 2022 Vol1Special Issue 2022 Vol2Special Issue 2022 Vol3Special Issue 2022 Vol4
2021 ISSUES
LIII - April 2021LIV - July 2021LV - November 2021Special Issue 2021 Vol1Special Issue 2021 Vol2Special Issue 2021 Vol3
2020 ISSUES
2019 ISSUES
Special Issue 2019 Vol1Special Issue 2019 Vol2Special Issue 2019 Vol3XLIX - November 2019XLVII - April 2019XLVIII - July 2019
2018 ISSUES
Special Issue 2018 Vol1Special Issue 2018 Vol2Special Issue 2018 Vol3XLIV - April 2018XLV - July 2018XLVI - November 2018
2017 ISSUES
Special Issue 2017 Vol1Special Issue 2017 Vol2Special Issue 2017 Vol3XLI - April 2017XLII - July 2017XLIII - November 2017
2016 ISSUES
Special Issue 2016 Vol1Special Issue 2016 Vol2Special Issue 2016 Vol3XL - November 2016XXXIX - July 2016XXXVIII - April 2016
2015 ISSUES
Special Issue 2015 Vol1Special Issue 2015 Vol2XXXV - April 2015XXXVI - July 2015XXXVII - November 2015
2014 ISSUES
Special Issue 2014 Vol1Special Issue 2014 Vol2Special Issue 2014 Vol3XXXII - April 2014XXXIII - July 2014XXXIV - November 2014
2013 ISSUES
2012 ISSUES
2011 ISSUES
2010 ISSUES
2009 ISSUES
2008 ISSUES
2007 ISSUES
2006 ISSUES
2005 ISSUES
2004 ISSUES
2003 ISSUES