Field Measurement and Analysis of Train Vibration of Qingdao New Airport High-speed Railway
In recent years,comprehensive transportation hubs centered around airports have emerged and played an increasingly important role in the transportation system.In order to improve design quality,reduce vibration impact and noise pollution,it is particularly important to conduct numerical simulation analysis and on-site vibration testing of vehicle induced vibration at airport transportation hubs where high-speed trains or subways pass through underground.This article conducts on-site measurement of the structural vibration response of the central area of the terminal building,GTC,and E corridor,when a high-speed train passes through Qingdao Jiaodong International Airport.Based on the measured results of vibration control points in each area,statistical analysis is conducted on the extreme values,time history distribution,and spectral characteristics of vibration acceleration response and displacement response.A comparison between the measured vibration results and finite element simulation calculation results is provided.The results indicate that the measured vibration magnitude on site is similar to the peak value of the finite element simulation calculation results,and their distribution pattern is consistent.This verifies that the simulation calculation results meet the engineering requirements in numerical terms,and the finite element simulation calculation method for vehicle induced vibration response is applicable.This article conducts on-site measurement of the vibration response of high-speed trains passing through stations at Qingdao Jiaodong International Airport,and compares it with numerical simulation results to verify the correctness of the simulation results of vehicle induced vibration during the design phase.The research results have certain reference value for other airport hub projects,especially in terms of actual measurement point layout,working condition selection,comfort evaluation,data processing,and comparative analysis.
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