Optimal Characteristics of Inspection Vehicle for Drive-by Bridge Inspection

• URL: http://arxiv.org/abs/2510.02658v1
• Date: Fri, 03 Oct 2025 01:29:02 GMT
• Title: Optimal Characteristics of Inspection Vehicle for Drive-by Bridge Inspection
• Authors: A. Calderon Hurtado, E. Atroshchenko, K. C. Chang, C. W. Kim, M. Makki Alamdari,
• Abstract summary: Drive-by inspection for bridge health monitoring has gained increasing attention over the past decade.<n>This study presents a framework for optimising the inspection vehicle to enhance damage sensitivity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Drive-by inspection for bridge health monitoring has gained increasing attention over the past decade. This method involves analysing the coupled vehicle-bridge response, recorded by an instrumented inspection vehicle, to assess structural integrity and detect damage. However, the vehicles mechanical and dynamic properties significantly influence detection performance, limiting the effectiveness of the approach. This study presents a framework for optimising the inspection vehicle to enhance damage sensitivity. An unsupervised deep learning methodbased on adversarial autoencoders (AAE)is used to reconstruct the frequency- domain representation of acceleration responses. The mass and stiffness of the tyre suspension system of a two-axle vehicle are optimised by minimising the Wasserstein distance between damage index distributions for healthy and damaged bridge states. A Kriging meta-model is employed to approximate this objective function efficiently and identify optimal vehicle configurations in both dimensional and non-dimensional parameter spaces. Results show that vehicles with frequency ratios between 0.3 and 0.7 relative to the bridges' first natural frequency are most effective, while those near resonance perform poorly. Lighter vehicles require lower natural frequencies for optimal detection. This is the first study to rigorously optimise the sensing platform for drive-by sensing and to propose a purpose-built inspection vehicle.

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