The Experimental Research And Numerical Simulation On Vibration Isolation By Rows Of Concrete Piles

With the rapid economic development of China, the impact of vibration problemscaused by transportation, construction is becoming more and more serious and bringssignificant influence to people’s normal life and the nearby buildings. It is of greatsignificance to study vibration isolation measurements under this background.Barrier isolation is an effective method through taking certain measures to change thewave propagation direction and blocking the path of the wave propagation. Aseries ofresearch has been done to study on non-continuous barrier in this paper. The effect ofvibration isolation by rows of concrete piles was studied by the experimental researchand numerical simulation. First, This paper discusses the characteristics ofpropagation of the shock wave in the soil, the mechanism of barrier isolation was alsoanalyzed. Based on these principles, isolation test of single row and double rows ofconcrete piles was carried out，and then rows of concrete isolation system wasresearch systematic by a three-dimensional model of ABAQUS, the purpose of theseexperiments is to analysis the influencing factors of isolation barrier，Finally, throughfield tests and numerical simulation results evaluate the effect of concrete isolation，and choose a suitable isolation methods.The field test and the numerical results show that:the isolation effect of Single row ofconcrete piles is mainly affected by the pile length, pile diameter，pile spacing andimpact vibration source location, the isolation effect of Multi-row piles isolation ismainly affected by the number of rows of piles，the pile length, pile diameter，pilespacing. We can conclude that as a barrier isolator，concrete piles isolation systemhave a adequate application value.