Centrifuge test of new pile-plate structure embankment settlement of soft soil of high-speed railway

Pile-plate structure is a new technology dealing with the soft soil foundation in high-speed railway practice in order to adapt to the strict deformation standards.This structure is composed of rigid pile like CFG,PHC and 50cm plate on the top of piles;it can be used to control the embankment settlement of soft soil.Two centrifuge tests were done about the plate on the top of the piles to analyze the function of the plate for soft soil embankment settlement of high-speed railway.The results show:While the concrete plate is covered on the top of the piled-foundation,the soft soil embankment settlement is reduced about 12% and its settlement is more uniform.The soft soil changes from soft-plastic condition to hard-plastic;and the density and water content are changed obviously;the depth of the engineering load affected is over 40m.