Test and analysis on the micro-vibration control ability of mass concrete slab
Large-scale scientific facilities with high precision such as high energy photon source usually have strict requirement in micro-vibration controlling.Inorder to study the properties of micro-vibration in a large-scale and high precise facility,a field test composed of shock-excitation,vehicle running excitation and ambient excitation has been finished.Root mean square values of displacement during 1 Hz to 100 Hz in 1 s has been calculated through obtained vibration data of vibration velocity.Results show that the micro-vibration level satisfies the requirement for the facility under ambient excitation,and the signals of micro-vibration on experimental hall generally distribute from 5 Hz to 30 Hz.Vehicle running has significant adverse influence on the micro-vibration level of the site.Moreover,the micro-vibration level of the whole site maintains the same under ambient excitation.It has significant theory and reference value for the anti-micro-vibration controlling of the facility as well as similar engineering project.
mass concrete layermicro-vibrationeffective value of displacementshock excitationambient excitation
万方数据
维普
