Method for Vibration Frequencies Inspection of Medium and Small Bridges Using Smartphone-Based Accelerometers

This study proposes a bridge structural vibration frequency inspection method based on built-in smartphone accelerometers. The uploaded data consists of the raw acceleration data acquired. The file naming convention is: "Bridge Type & Measurement Point - Mounting Method - Sampling Frequency - Sampling Duration - Acquisition Device". "JZ" represents a simply-supported beam bridge, "GG" represents a rigid-frame bridge. For simply-supported beam bridges, the measurement point is at the mid-span. For the four-span rigid-frame bridge, numbers 1, 2, and 3 denote the mid-span of the second span, the quarter-point of the third span, and the mid-span of the third span, respectively. "GD" indicates fixed mounting, "ZY" indicates free placement. Sampling frequencies are 200 Hz, 100 Hz, and 50 Hz. Files ending with "SJ" contain data collected by smartphones; files ending with "XT" contain data collected by the health monitoring system. This data can be used for investigating the performance parameters of smartphone accelerometers and for research related to structural natural vibration frequencies.