Reduction Of Artificial Vibration By Using Wave Barrier

With the rapid development of China's economy,there is a fierce conflict between the artificial vibration problem and the construction of an environment-friendly society.In this scenario,the study of vibration isolation measures is very important for environmental protection.In this paper,the indoor scale model test and mathematical analysis method are adopted for the continuous in-filled barrier and the WIB(Wave Impeding Block)barrier to investigate the effects of a series of parameters of the barriers on the vibration reduction.The wave equation and the law of refraction are used to derive the transmission coefficient of the continuous elastic barrier in saturated media.The accuracy of the formula was verified by comparison with published data and experimental data.The model test is used to study the vibration isolation effect of the in-filled barrier in saturated sand for vertical harmonic vibration.The sensor is used to measure the vibration amplitude at different distances from the vibration source to evaluate the vibration reduction effect.The geometrical parameters of the barrier mainly include length,depth,width and surface shape.In addition,the effect of the material properties on the vibration reduction is extensively and adequately tested at different excitation frequencies.Finally,the accuracy of the experimental results in this paper is verified by comparison with experimental data in published literature.A series of indoor model tests to study the vibration reduction of WIB under vertical excitation.The effects of different WIB parameters on the vibration reduction effect at the same frequency were investigated.The different WIB parameters mainly include the area,thickness,material properties,and buried depth.The results show that WIB can effectively reduce the vibration amplitude of the protected area.At the same time,the function relationship between different parameters and the vibration reduction ratio is obtained by data fitting analysis.In addition,a new type of toothed WIB has been proposed.Experimental results show that this toothed WIB can effectively reduce vibration.The relevant conclusions obtained in this paper provide reference value for the design and application of barriers in engineering.