Based on the stress mechanism with composite foundation and rigid foundation,and the accuracy grade of pile positioning,the author believes that the existing technical standards for pile displacement in soil-cement mixed pile foundation are unreasonably rigorous.

The practice about joint application of the sand cushion and the composite foundation of cement mixing piles;

Application of the cement-soil mixing pile in the soft foundation processing;

Seismic response of cement-soil mixing pile composite foundation with time-history analysis;

Research on the cement-soil mixing pile for marine soft soil foundation improvement and it s application;

Analyses about the engineering case of cement deep mixing pile in soft ground improvement;

In this paper, the layer of gravel soil with soft lens is treated using the cement deep mixing piles (CDMP).

By comparing the results of static loading test with calculating results, the actual situation of cement deep mixing pile s loading is proved, At the same time, it proposes the parameters of designing and of construction in application of cement deep mising pile in soft soil foundation.

Test study on the composite foundation with cement-soil pile;

Discussion on Test and inspection of cement-soil pile;

Through comparing static pressure of the PHC Tubular Piles the new guiding hole technology using the cement-soil pile to the normal technology for the static pressure of PHC tubular piles by the static loading test.