Digital twin-based life-cycle seismic performance assessment of a long-span cable-stayed bridge

Long-span cable-stayed bridges often have a design service life of more than hundred years, during which they may experience multiple earthquake events and accumulate seismic damage if are located in seismic-prone regions. Earthquake occurrence is discretely randomly distributed over the cycle long-span bridge causes sudden drops structural performance instead yearly fixed degradation. This study thus proposes digital twin-based life-cycle assessment method for bridges. The major components this include: (1) hazard analysis-based generation sequence; (2) response prediction considering lifetime (3) quantification method. proposed applied to scaled with series shake table tests. results show that twin can closely reproduce under sequential earthquakes. provides intuitive presentation accumulation process accurate estimation bridge.