基于填充沟性质的填充沟隔振措施正交试验研究

Orthogonal Experimental Study on Vibration Isolation of Filling Trench Based on Filling Trench Nature

为了研究填充沟隔振的隔振效果,本文以模型试验为基础用正交试验的方法探究了填充沟宽度、深度、填充物种类对近场填充沟隔振效果的影响,并对试验结果进行方差分析。在本文试验条件下,成果表明:填充沟对沟后一定距离土体的隔振效果显著,填充沟沟后土体振幅衰减率的范围在55. 07%-78. 57%之间;对填充沟隔振效果从大到小依次为填充沟深度、填充物材料、填充沟宽度;填充沟宽度变化对填充沟的隔振效果影响不显著,填充沟深度越深对沟后土体隔振作用越显著,空沟隔振效果要优于橡胶颗粒填充沟和砂土填充沟;本试验选出的最优方案为填充沟宽度50mm、深度400mm,无填充物。

In order to study the vibration isolation effect of the filling trench vibration isolation measures,Based on the model test, the influence of the width, depth and filler on the vibration isolation effect of the near -field filling trench was investigated by orthogonal test. The results were analyzed by variance. Under the test conditions in this paper, the results show that： Filled trench to trench isolation effect after a certain distance from the soil is very significant, The amplitude attenuation rate of the soil after filling the trench is between 55.07% and 78.57% ; The effect of the damping effect on the filling trench is from the order of the filling trench depth, the filling material, the filling trench width; The effect of the filling trench width on the vibration isolation effect of the filling trench is not significant, the deeper the depth of the filling trench, the more obvious the vibration isolation effect of the soil after the trench, the effect of cavitation vibration is better than that of rubber particles filling trench and sand filling trench ; The optimal scheme chosen for this experiment is the filling trench width of 50mm, depth of 400mm, no filler.