混凝土板尺寸对主动隔振效果影响的试验研究

Experimental Study on the Effect of Concrete Slab Size on Active Vibration Isolation

采用室外试验的方法来测试混凝土板的尺寸变化对主动隔振效果的影响,主要通过加速度传感器测定振源振动时地表加速度的变化,以此对比有无隔振措施时相同区域的加速度值,进而得到了混凝土板的厚度、宽度对隔振效果的影响。从试验结果来看,混凝土板厚度的增加对隔振起到有利作用,换用较厚的混凝土板后相同测试点加速度值有所降低;混凝土板宽度增加时隔振效果也随之加强,在相同测试区域宽度较大的混凝土板可降低更多的加速度值。

This test uses an outdoor test method to verify the effect of the size change of the precast concrete slab on the active vibration isolation effect.The acceleration sensor is mainly used to measure the change of the ground acceleration when the vibration source vibrates,so as to compare the same area with or without vibration isolation measures.The acceleration value,and then the influence of the thickness and width of the concrete slab on the vibration isolation effect.From the test results,the increase in the thickness of the concrete slab has a beneficial effect on vibration isolation.After the thicker concrete slab is used,the acceleration value at the same test point is reduced;when the width of the concrete slab is increased,the vibration isolation effect is also strengthened.A concrete slab with a larger width in the same test area can reduce more acceleration values.