Investigation of monitoring system for high-speed railway subgrade frost heave

摘要

This paper presents methods for monitoring frost heave, device requirements, testing principals, and data analysis re-quirements, such as manual leveling observation, automatic monitoring (frost heave, frost depth, and moisture), track dynamic detection, and track status detection. We focused on the requirements of subgrade frost heave monitoring for high speed railways, and the relationship of different monitoring methods during different phases of the railway. The com-prehensive monitoring system of high speed railway subgrade frost heave provided the technical support for dynamic design during construction and safe operation of the rail system.