CONSOLIDATION BEHAVIOR OF SOFT GROUND IMPROVED BY SOIL-CEMENT COLUMN UNDER EMBANKMENT LOADS
Soil-cement column is widely used in highway and railway embankments, earth-rock dams, and stock-yards. Especially under embankment load, the equal strain assumption of composite foundations no longer applies well. Further research on consolidation settlement characteristics is urgently needed. This paper utilizes finite ele-ment simulation to study the consolidation behavior of cement pile composite foundation under embankment load, and analyzes the influence of multiple factors. It is found that pile length has a great influence on the consolidation characteristics of composite foundations. As pile length increases, the settlement of composite foundations signifi-cantly decreases and the consolidation speed accelerates. Increasing the pile modulus and pile permeability coeffi-cient promotes the consolidation of the composite foundation. At the same time, as the pile spacing increases, the foundation consolidation speed slows down. In order to control the settlement, increasing pile length is an effective measure. This study may provide the reference for the design of soft ground improved by soil-cement column under embankment load.
万方数据
维普
