Experimental Study On Shallow Foundation Treatment Of Dredger Fill

The using of dredger fill Land Reclamation has been a very common thing, due to the needs of economic development. However, due to the high moisture content and low ground bearing capacity, the newly dredger fill is not able to use directly, and has to get foundation treatment. There are many different methods for foundation treatment. As well as each method will get different effectiveness, economic efficiency, choose the appropriate foundation treatment method is particularly important. In practical project, we should use field experiment to discriminate the effectiveness of foundation treatment and find the proper construction technology for the latter part of construction.To find a suitable method of foundation treatment and construction technology, Da Tang Group Jiangsu Lvsi Harbor Power Plant use vibroflotation, dynamic compaction and HVDM to have a field experiment. This paper based around this project and combines each theory to research these three methods of foundation treatment. Discuss the application of vibroflotation, dynamic compact and HVDM in this construction site: Based on inspection of a large number of references circumstances, this article conclude the foundation strengthening mechanism of vibroflotation, dynamic compaction and HVDM; Conclude the construction technology of this three foundation treatment methods; Research the variation regularity of the soil parameter, by using the monitoring data, such as the settlement of the ground, the exceed pore water pressure and so on; Through the standard penetration test and static cone penetration and plate load test, to analysis the bearing capacity of the foundation and the performance of anti Earthquake liquefaction; Discuss the effective reinforcement depth of each technology, though the data of exceed pore water and static cone penetration; Make some research of effective range of influence of vibroflotation from the view of wave theory, and use the exceed pore water pressure to verify; Analyze the reasons which make the effectiveness of HVDM is not very good; At last the paper gives same suggests of latter foundation treatment.