Abstract:

The response regularity and reinforcement mechanism of soft soil foundation reinforced by static and dynamic drainage consolidation method are usually obtained by analyzing the pore pressure, soil pressure, settlement, and strength variations under compaction. However there is no precise formula for the effective reinforce depth. In this research, we obtained a precise formula for the effective reinforce depth of soft soil foundation based on the principles of momentum conservation and energy conservation. The contact between hammer and soil is simplified as uniform deceleration linear motion. By comparing the calculated result with the field in-situ monitoring data of an engineering site in Guangzhou, we verified the feasibility of this formula. This research could be a reference for determining the effective reinforce depth of such soft soil foundation.

Key words: static and dynamic drainage consolidation, effective reinforce depth, conservation of momentum, conservation of energy, cone penetration test