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根据强夯加固某湿陷性黄土场地时实测的地面振动数据,对各振动参数作了对比分析。根据实测振动参数,指出振动速度、加速度随夯击数的增加而增大,当达到一定的夯击数时便趋于稳定,最后有所减少,振动时间随夯击数的变化呈现出先减后增的特点,夯坑深度的变化与振动参数的变化相对应。在确定强夯影响的安全范围时,应在夯击过程中综合考虑。
According to the measured data of ground vibration when consolidating a collapsible loess site by dynamic compaction, the vibration parameters are compared and analyzed. According to the measured vibration parameters, it is pointed out that the vibration velocity and acceleration increase with the increase of the number of tampons, and when the number reaches a certain number of tampons, it tends to be stable, and finally decreases. The vibration time changes with the number of tampons, Increased by the characteristics of tampered pit depth changes and vibration parameters corresponding changes. In determining the impact of dynamic compaction safety range, should be comprehensive consideration in the ramming process.