摘要：
This paper presents the results of analysis of soft ground improved by stone-columns wrapped with layers of geonet and needle punched geotextile by using nonlinear FEM and testing in laboratory and field. The validation of needle-punched geotextile on improving the filtrating function of crushed stone-columns is elucidated by combining with the results of laboratory test. According to the comparison between the results of calculation and measurement, and the influence of column spacing on the settlement of soft soil ground, the rationality of column arrangement scheme is expounded and proved. Besides, the reinforcing function of geonet on crushed stone-columns to resist bulging failure near the tope end of stone-column is also discussed by using limit state equilibrium theory.
