Research On The Methods Of Subgrade Surface Settlement Measurements

The emergence of high-speed railway, on the subgrade deformation control with higher demand, makes the settlement of the measurement, calculation and control more important. Of the three, the settlement of the measurement is the basis and foundation for the latter two. This requires long-term and real-time monitoring for the settlement of the subgrade, to maintain the roadbed that do not meet the requirements timely and ensure the safe transportation. This paper is based on the "Study on Omni-directional and Real-time monitoring technology of the Subgrade Settlement of Passenger Dedicated Line", and developed an all-round, multi-parameter, settlement and deformation of high-precision automatic detection and real-time monitoring system on a wireless network. This thesis is based on experimental and theoretical analysis, to measure the many point of the settlement of the embankment surface, with the optical method and to achieve subgrade surface subsidence measurement system, tested in the Beijing-Shanghai high-speed rail, and advanced an improved schemes by the experimental data collection and analysis.