The dynamic compaction method is relatively commonFoundation treatmentOne of the methods, it is to use a few tons to dozens of tons of heavy hammer falling from height, repeatedly ramming the ground, the foundation for strong tamping.

This powerful ramming force in the foundation middle vivid stress and vibration, from the ramming point sent out longitudinal wave and transverse wave, to the depth of the foundation direction propagation, so that the foundation shallow and deep layer of different degrees of reinforcement.

The dynamic compaction method is mainly used for sandy soil, unsaturated cohesive soil and miscellaneous fill soil foundation. For unsaturated cohesive soil foundation, the methods of continuous or intermittent ramming are generally adopted. And according to the engineering needs through the field test to determine the number of tamping and effective tamping depth. Existing experience shows that in100～200Ton of rice tamping energy, generally available3～6Effective tamping depth in meters.

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