Study on the Vibration Effect of Railway Tunnel Blasting on the Adjacent High Voltage(UHV)Iron Tower
In order to study the impact of tunnel blasting excavation on the adjacent high voltage(UHV)iron tower,the vibration velocity of the tower foundation was studied by combining field test and numerical simulation,and the re-lationship between the blast center distance and the peak vibration velocity was discussed in detail.Through data fit-ting,the propagation law and attenuation formula of tunnel blasting particle vibration under the engineering conditions were obtained.The results showed that the peak vibration velocity of the tower base increased with the distance be-tween the explosion source and the tower base,and the maximum vibration velocity occurred when the explosion center distance was 0 m;The vibration velocity in the vertical direction was generally higher than that in the horizontal direc-tion;The maximum axial stress of the three towers was at the tower base,and the maximum axial stress decreased grad-ually with the increase of tower height.The numerical simulation results were close to the field test results,and the re-search can provide reference for the actual project.
blastingtunnelhigh voltage iron towervibration speednumerical simulation
NETL
NSTL
万方数据
维普
