Safety Assessment for Stability of High-Railway Soft Loadbed Based on Rheological

Pointed to character of rheological mechanics and safety assessment method, a new viso-elasto-plastic rheological model is builded with correlation on safety assessment basic events,including minimal cut sets solution and primary events on loadbed stability abtained. In order to compare with safety assessment, the numerical calculation is applied to analyze CFG piles compound ground on high railway soft loadbed as plastic region including cushion and upside surrounding soil. Based on calculated results and safety assessment fault tree method, plenty of key factors, named cohesion,friction angl and load capacity, on whole mound struct and CFG piles compound groud are studied.Lastly.the conclusions show the numerical calculation is coincident with safety assessment method in engineering application,so that the safety assessment method is provided for effective traffic engineering.