TY  - JOUR
PY  - 2019//
TI  - Multi-scale fatigue damage prognosis for long-span steel bridges under vehicle loading
JO  - Structure and infrastructure engineering: maintenance, management, life-cycle design and performance
A1  - Sun, Bin
A1  - Xu, You-Lin
A1  - Wang, Feng-Yang
A1  - Li, Zhaoxia
A1  - Zhu, Qing
SP  - 524
EP  - 538
VL  - 15
IS  - 4
N2  - Fatigue damage prognosis for long-span steel bridges is of the utmost importance in bridge maintenance and management. In this study, a multi-scale fatigue damage prognosis algorithm is developed to calculate the trans-scale fatigue damage accumulation of newly-built long-span steel bridges under vehicle loading. The necessity and procedure of establishing a multi-scale finite element (FE) model of a newly-built long-span bridge for fatigue damage prognosis are first introduced. The future vehicle loading on the bridge is forecasted using the recorded weigh-in-motion (WIM) data and the agent-based traffic flow micro-simulation method. Then, the multi-scale fatigue damage prognosis algorithm is developed based on the multi-scale FE model and using the future vehicle loading. Finally, the proposed algorithm is applied to a newly-built long-span cable-stayed bridge for the time period from 2010 to 2020. The results show that the macro-scale fatigue damage accumulation and micro-scale short crack evolution of the critical components of the bridge can be simultaneously predicted and visualized. The proposed algorithm can be used as a numerical tool for fatigue damage prognosis of steel bridges where (or near where) WIM station is installed.<p />  <p>Language: en</p>
LA  - en
SN  - 1573-2479
UR  - http://dx.doi.org/10.1080/15732479.2018.1562478
ID  - ref1
ER  -