My Thuan Cable-Stayed Bridge — FEM-Simulated Vibration Dataset for Structural Health Monitoring

My Thuan Cable-Stayed Bridge - FEM-Simulated Vibration Dataset for Structural Health Monitoring This dataset contains simulated vibration time-series for structural health monitoring (SHM) of a long-span cable-stayed bridge (My Thuan Bridge, Vinh Long Province, Vietnam). Data were generated from a calibrated finite-element method (FEM) model under realistic moving-vehicle loading and ambient/operational perturbations, then curated for supervised damage classification. Both the raw acceleration records and the windowed, classification-ready set used in the associated manuscript are provided. Structure: cable-stayed bridge, 1,535 m total length, 150–350–150 m main spans, two reinforced-concrete H-frame pylons, 128 stay cables. Modeling: MATLAB-based 3-D truss–beam FE model (Stabil toolbox) comprising deck, girders, cross beams, towers, and stay cables; calibrated against in-situ ambient vibration measurements (SSI modal identification) using a hybrid GA–improved-PSO model-updating algorithm. Loading: AASHTO two-axle truck (35 kN front / 145 kN rear, 4.3 m spacing) at 60 km/h, eight consecutive traversals with 3 s gaps; superposed impulsive, wind, and local traffic-noise perturbations to emulate operational uncertainty; response via modal superposition (first 20 modes, damping ratio 1.5%). Sensing layout: 36 virtual sensors recording vertical acceleration at lower-beam deck nodes along both side lanes. Sampling: dt = 0.002 s (500 Hz) for ~109.6 s per scenario (~54,778 time points). Scenarios: 11 structural states - one undamaged reference and ten localized damage cases (10–40% stiffness reduction of selected truss members). Raw set (per scenario): 36 acceleration channels × 54,778 time points at 500 Hz (~109.6 s). MATLAB .mat format, one file per state (MyThuan0.mat … MyThuan10.mat), each containing the variable acceleration with shape (36, 54778), float64. Overall raw corpus shape: (11, 36, 54778).