Experimental Study on Vibration Isolation Effect of Horizontal Row Piles with Different Diameters
This test studied the influence of pile diameter on the vibration isolation effect of horizontal row piles through the control variable method,providing a basis for construction design.Under the test conditions,the following conclusionsare drawn:concrete piles can effectively isolte vibra-tion waves.Under the condition of the same pile diameter,with the increase of the distance from the vibration source,the amplitude reduction ratio Ar value will gradually decrease,but after the distance increases to 700mm,the amplitude reduction ratio will increase Ar value will gradually in-crease,which indicates that the distance from the vibration source also affects the vibration Isola-tion effect.The optimal vibration isolation area is between 550mm and 850mm.The pile diameter of row piles is increased from 50mm to 100mm,and the minimum value of Ar is reduced from 0.37 to 0.192,which means that the vibration isolation effect of piles is improved by about 48％;The pile diameter increases from 100mm to 150mm,and the minimum value of Ar decreases from 0.192 to 0.141,which means that the vibration isolation effect of the pile is improved by about 26％.It shows that under the condition of constant pile spacing,the vibration isolation effect of row piles increases gradually with the increase of pile diameter.
Active vibration isolationPile diameterExperimental studyAmplitude reduction ratio
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