不同桩间距对于水平排桩的隔振效果分析

Analysis of vibration isolation effect of horizontal row pile with different pile spacing

为研究不同桩间距对水平桩的隔振效果,采用控制变量法进行试验。得出以下结论:混凝土桩可以较好地隔离振动。随着振源距离的增加,Ar值逐渐减小,隔振效果明显,但当距离增加到一定值时,隔振效果变弱;不同柱间距的最佳隔振区在450mm~600mm之间。当桩距为120mm时,最佳隔振区Ar值约为0.300;当桩距为150mm时,最佳隔振区的Ar值约为0.405;在200mm处,最佳隔振区的Ar值约为0.488。随着桩间距的增大,最优隔振区域的Ar值增大,隔振效果减弱。

In order to study the vibration isolation effect of horizontal row pile with different pile spacing,the control variable method was used to conduct experiments to study the influence of different pile spacing on the vibration isolation effect of horizontal row pile.The following conclusion is drawn:concrete piles can insulate vibrations well.As the distance from the vibration source increases,the Ar value gradually decreases and the vibration isolation effect is clearly visible.However,when the distance increases to a certain value,the vibration isolation effect becomes weak.The optimal region of vibration isolation with different pile spacing is between 450mm-600mm,and the Ar value of the optimal region of vibration isolation with pile spacing of 120mm is about 0.300.The Ar value of the optimal vibration isolation region is about 0.405 when the pile spacing is 150mm.When the pile spacing is 200mm,the ideal vibration isolation area value Ar is about 0.488.As the stack distance increases,the Ar value of the ideal vibration isolation region increases,resulting in the weakening of the vibration isolation effect.