Research on Aerodynamic Effect on Trackside Monitoring Equipment Safety for High-speed Railway
Automatic monitoring is an important means to ensure the safety of high-speed railway operation during the construction period of adjacent high-speed railway projects.However,the installation of monitoring equipment on the trackside may have a certain impact on the safety of high-speed railway operation.This paper used the aerodynamic calculation method in the Code for Design of High-speed Railway and the calculation method of internal force of anchorage connection and the limit state of bearing capacity in the Technical Specification for Post-Installed Fastenings in Concrete Structures to calculate and analyze the impact of aerodynamic effect on the total station,protection box and monitoring prisms 3.5 m away from the line centerline on the roadbed under the condition of 350 km/h train speed.The calculation results show that under the influence of high-speed railway aerodynamic effect,the expansion bolts of the total station,protection box and monitoring prisms bear less tensile and shear forces than the design values of the bolt steel failure tensile and shear bearing capacity.The tensile forces borne by the anchor foundation concrete are all less than the design values of the concrete cone failure tensile bearing capacity,meeting the requirements of the specifications.
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