The Study And Application Of Automation Monitoring System Of The Underline Engineering Deformation For The High-speed Railway

Abstract:The deformation observation of the underline engineering during the operation of high-speed railway can only be carried out in a limited "skylight time", and the density of settlement measuring point is so high, which call for heavy workload. If a rapid feedback is needed in contrast with the measured data to release a timely warn, lots of human and financial resources will be occupied. Therefore, under the premise to ensure accuracy, the study of remote wireless monitoring system integrated automation for deformation monitoring of high-speed railway underline engineering can greatly reduce human input and interference of construction, achieve all-weather monitoring and real-time feedback monitoring information, contribute to the security warning during operations, and have important engineering significance for the current high-speed railway and the passenger dedicated high-speed rail construction.Based on the topic of the Ministry of Railways science and technology research and development program "Research of Remote Automated Monitoring System for the Deformation of High-speed Railway Underline Engineering in Steep Mountains"(2010G018-E-3), the article focused on the overall design for automatic monitoring system, research development and calibration of high-speed rail differential settlement instrument, and improvement studies of stability of electric level, using laboratory and field test methods, combining the long-term monitoring on site for a more in-depth study. The main work and results were as follows:On the basis of in-depth study of the deformation monitoring the status quo at home and abroad, the overall design scheme of automatic monitoring system was proposed.Analysis the principle of work, test precision, long-term stability and service life of the equipment used for automated monitoring, combined with the deformation characteristics of the project, select the appropriate monitoring device, automated collection devices and remote data transmission system.A differential settlement instrument for high-speed railway was developed and calibrated indoor considering the tiny settlement of the substructure of the high-speed railway and strict control features of differential settlement, and its indoor calibration results showed linearity, stability and accuracy of the test requirements were met.The internal structure and installation process of the electric level at the highest test accuracy were explored under different environmental conditions through eight trials.Remote wireless automatic monitoring system was applied to engineering, based on the monitoring data, differential settlement rule in the road-culvert transition section are analyzed.Using ABAQUS finite element analysis software, the numerical analysis model of road-culvert transition section was established, and the differential settlement rule of the road-culvert transition section roadbed was analyzed, and was consistent with the measured results.