According to the design requirement and geographical condition of Shanghai Waigaoqiao Port Area, and in the light of different thickness of reclaimed silty sand and different substrata, various foundation improvement measures including vibro-rolling combining with dynamic dewatering, low-energy dynamic tamping combining with dynamic dewatering, and non-filler vibro-flotation, etc.

1 testing Area in 1 stage Project of Yangshan Deepwater Harbor Area it is proved that to adopt the construction process of reasonable vibro-jet with vibration rolling so as to effectively improve the capacity of the base and reach the use requirement of the roads and stack yard in the container harbor area, at the same time, with easy and r.

To design an effectually mixture, the interaction between mixture and vibration rolling must be considered.

Combing with the sluice key project in Cao-e River,this paper analyzes stress characteristics of piles by three methods to treating soft foundation like gravel compaction by vibrating roller,compaction by vibrating roller,and vibrating and tamping method.

To analyse the behavior of PHC pipe piles un-der lateral load by three different shallow foundation treatment methods,including gravel compaction by vibrating,compaction by vibrating roller,vibrating and tamping method,field lateral static load test was carried out.