In-Service Bridge Monitoring Time Series Dataset (Raw Signals + Bridge Crossing Event Identifiers)

In-Service Bridge Monitoring Time-Series Dataset (Raw Signals) Summary This dataset contains raw time-series measurement data collected from bridges in service under normal traffic conditions. The data is categorized by signal type, including strain, support force, and acceleration. Each file provides approximately 10 minutes of data, encompassing multiple vehicle crossing events, facilitating independent research. Additionally, the final column of each data record indicates whether a vehicle is currently traversing the bridge deck, helping to determine whether a given signal was triggered by a vehicle. These signals are provided as unfiltered, un-trended, and unsampled raw records (containing only basic header metadata). Data Collection & Instrumentation 1) strain Highway bridge: A bidirectional six-lane bridge with separated dual carriageways; a three-span continuous steel box-girder bridge (variable depth only).Sensors: Surface-resistance strain gauges at the midpoint of the side span, mounted at the midpoint of the top plate and on the web.Sampling rate: 200 Hz. Railway bridge: An eight-span continuous steel truss bridge. During acquisition, only the high-speed railway was operational.Sensors: Fiber Bragg grating (FBG) strain gauges installed at the bottom of the lower chords of the three main trusses at midspan.Sampling rate: 50 Hz. 2) support force Bridge: A three-span continuous steel box-girder bridge with variable width and variable depth.Sensors: A wireless smart force-measuring bearing on pier top, acquiring vertical bearing reaction in real time and uploading to a cloud server for storage.(Acquisition/transfer details are summarized in file headers.)Sampling rate: 10 Hz. 3) acceleration Railway bridge: Vertical accelerometer at midspan, 50 Hz sampling. Highway bridge: Vertical accelerometer at midspan, 100 Hz sampling. Note: To protect site confidentiality, precise coordinates and certain identifiers are anonymized without affecting research usability. File Organization There are no subfolders; the file name itself encodes the category (signal type) and bridge class. The naming pattern is: <SignalType>-<BridgeClass>-labeled.txt <SignalType> ∈ {Acceleration, Strain, SupportForce} <BridgeClass> typically ∈ {railway, highway} Formats & Metadata Text format: first column is time (s) or relative time (s), followed by channel columns, with the last column indicating whether a vehicle is currently on the bridge; headers include sampling rate, channel names, and units. Units (see file header): Strain: microstrain (με). Support force: reaction force (kN). Acceleration: m/s². Data Quality & Notes Records reflect true operational variability (non-stationarity due to traffic, ambient noise, temperature effects).