Research On New Embankment Constructed Of Pile-plate In Deep Soft-clay Region

The problem that the settlement of constructed embankment must be less than 15mm was studied about high-speed railway. These methods of geological survey, theory analysis, centrifuge test, numerical simulation, site monitoring, were used, the engineering characteristic of soft-clay was summarized; the key technical and the new type embankment structure were set up to adapt to the strict deformation standards. The main results were introduced as followed:(1) The engineering characteristics of soft-clay in some region were summarized which provides the basis for special geotechnical engineering study.(2) Based on the key technical of the settlement of soft-clay embankment, new pile-plate structure was set up according to the 15mm deformation criterion on high-speed railway.(3) The effects, applications and limitations of PHC pile-plate, CFG pile-plate and bored pile-plate were compared and studied.(4)The theory calculation method of the settlement of pile-plate structure was obtained based on the studied results.(5) The application of reinforced concrete plate of pile-plate was researched by Centrifuge test.(6) The disciplines of settlement and pore water pressure and stresses of the pile-plate structure embankment were obtained by numerical stimulation and site monitoring.