为探究强夯振动速度的衰减规律及设置双减振沟对强夯振动速度的衰减效果,在施工现场进行了设置无减振沟与设置单减振沟的对比实验以及设置单减振沟与双减振沟的对比实验,通过检测不同情况下强夯引起的地面振动速度及频率,对比分析了无减振沟、单减振沟、双减振沟三种情况振动速度的衰减规律.实验研究表明,在设置单减振沟基础上再设置一条减振沟能更大幅度削减振动速度,双减振沟的减振规律与单减振沟减振规律相似,且其减振效果是在单减振沟基础上再降低 70%以上.%In order to study the attenuation law of dynamic vibration velocity and double vibration reduc-tion trench on its role in the reduction,two comparison experiments were carried out at the construction site,respectively,the experiment of no vibration reduction trench and single vibration reduction trench and the experiment of single vibration reduction trench and double vibration reduction trench.By detec-ting the ground vibration velocity and frequency caused by dynamic compaction in different cases,com-pared and analyzed the attenuation law of dynamic vibration velocity in three cases of no trench,single trench and double trench.Experimental results show that setting the second vibration reduction trench on the basis of the single vibration reduction trench can significantly reduce the vibration velocity,vibra-tion reduction effect of double vibration reduction trench is based on single vibration reduction trench and then cut more than 70%.
展开▼
