Research On Stratigraphy And Buildings Vibrating Characters Caused By Dynamic Compaction And Its Vibration Control

In this paper, based upon the dynamic consolidation construction in the roadproject of Shenzhen city, that effects of the dynamic compaction vibration upon softsoil stratum and structures and human and environment, has been researched by fieldtest and vibration monitoring and theoretical analysis. The main research results areas follows:1. The field test and vibration monitoring and its results analysis has beencompleted to obtain the vibration characteristics of the foundation and stratum anddifferent floors, and guide dynamic consolidation, and which ensure the relatedhuman and environment and building safety.2. Combined theoretical analysis with field test and vibration monitoring and itsresults comparative analysis, this dynamic compaction vibration characteristicparameter such as the particle vibration velocity and acceleration and displacementand their main vibration frequency and vibration duration, are studied to analysisvibration characteristics of soft soil stratum and structures. Which refers to Safetyevaluation of the dynamic consolidation construction.3. Based on the dynamic consolidation vibration calculation model andcorresponding calculation formula, the attenuation calculation formula of the particlevibration velocity and acceleration have been obtained, which could be referredto resemble dynamic consolidation construction and the dynamic consolidationvibration controlling. At the same time, it is show that vibration velocity amplitudeincrease non-linearly with increasing of drop height. The greater the drop diameter is,the greater the vertical particle vibration velocity is if the drop height and dropweight remain constant. Therefore, if the dynamic consolidation vibration wanted tobe reduced or controlled, it is reasonable to select large density drop to limit itsdiameter considering controlling its diameter Sufficient to satisfy a requirement ormeet construction need.4. The effects analysis of the dynamic consolidation vibration to structures andhuman and environment, has been completed. The affection forms and extent ofstructures are discussed systematically. Further, it has come to the effects onprecision instruments and Equipments. And the effects on human being are discussedtoo in four aspects which are labor protection and working conditions andPsychological and environment.5. Based on field test and vibration monitoring, active Vibration Control has beenresearched. Focused on the comparative analysis of damping groove vibrationreduction effect. It comes to the conclusion that the damping groove vibrationreduction effect is very good.