A Simple Estimation Method of Loose Bearing With a Gap Based on Track Geometry Using a Measurement of Unloaded Track Geometry

Key Points

• This research aims to develop an easy estimation method for detecting bearing gaps in railway structures based on track geometry.
• Numerical analysis to assess the impact of bearing gaps on track displacement.
• Use of a hand-operated track measuring device to capture static track displacement.
• Processing to subtract static displacement from measurements taken by a track measurement vehicle.
• Achieved an 81.1% accuracy rate in detecting points with bearing gaps from visual inspection data.