Multi-parameter monitoring and early warning system for high-speed rail roadbed

Abstract

The invention provides a multi-parameter monitoring and early warning system for a high-speed railway roadbed. The multi-parameter monitoring and early warning system comprises a multi-core optical fiber sensing module, a signal monitoring and processing module and a comprehensive early warning module, the multi-core optical fiber sensing module is used for acquiring multi-parameter monitoring data of a high-speed rail roadbed and a ballast bed structure based on a multi-core optical fiber; the multi-parameter monitoring data comprises temperature, rail longitudinal strain, railway ballast displacement, steel rail vertical bending and transverse deformation and rail micro vibration; the signal monitoring and processing module is used for determining the predicted frost heaving amount based on the temperature, the rail longitudinal strain and the constructed frost heaving prediction model, and determining the rail smoothness evaluation value based on the rail micro-vibration, the railway ballast displacement, the steel rail vertical bending and transverse deformation and the temperature; and the comprehensive early warning module is used for determining a comprehensive evaluation value based on the predicted frost heaving amount and the track smoothness evaluation value, and generating an early warning scheme based on the comprehensive evaluation value. According to the invention, through multi-parameter and multi-dimensional early warning evaluation, the early warning accuracy is improved.

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