Using Fiber-Optic Sensors to Assess the Strength Characteristics of Road Structures Allowing for Vehicle Speed

Kiyalbayev A. Orazbayeva D. Kiyalbay S. Sagybekova A. Espayeva G.
1 December 2025 American Society of Civil Engineers (ASCE)

Journal of Transportation Engineering Part B: Pavements
2025 #151 Issue 4

The study of the strength characteristics of road pavements is important to ensure the reliability of road infrastructure in the face of growing traffic and changing climate conditions. Understanding the mechanisms that affect strength and durability allows us to develop stable pavements that can withstand heavy loads and fluctuations in temperature and moisture. The aim of this study was to develop a system for monitoring the road surface and determining the modulus of elasticity of the road surface in moving traffic using fiber-optic sensors. The methods that were used to carry out the study were the finite-element method, Newmark direct integration method, and experiment. As a result of the study, it was proved that the monitoring system using fiber-optic sensors can provide an accuracy of up to 98.5% in determining the category of vehicles. At vehicle speeds of 8 and 70 km/h, the developed system provides reliable longitudinal sensor measurements with accuracy levels of 86.3% and 89.5%, respectively, making it a reliable and effective tool for monitoring and controlling road traffic and roadway condition. It can analyze various vehicle characteristics such as the speed, axle spacing, and number of axles, which provides additional data for optimizing road infrastructure and developing more accurate pavement maintenance and repair strategies. The practical significance of the results obtained is a significant increase in road safety, which is a critical aspect in the current conditions of growing traffic load and increasing the number of cars on the roads.

Bragg grating , Fabric durability , Field testing , Finite-element method , Infrastructure optimization , Monitoring system

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Dept. of Transport Construction and Production of Building Materials, Kazakh Automobile and Road Institute, 415B Rayymbek Ave., Almaty, 050061, Kazakhstan

Dept. of Transport Construction and Production of Building Materials

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