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| ANALYTICAL SOLUTION FOR COMPOSITE GROUND WITH GEOSYNTHETIC ENCASED STONE COLUMN UNDER TIME-DEPENDENT LOADING |
| ZHANG Yiping，WANG Yang |
| (College of Civil Engineering and Architecture，Zhejiang University，Hangzhou，Zhejiang 310058，China) |
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Abstract Aimed at the composite ground with geosyntetic encased stone column(GESC)，an analytical solution for its consolidation under time-dependent loading is developed. In this solution，not only the flow at radial and vertical directions within column and soil are considered，but also the deformation at radial and vertical directions of column and soil are included. Base on the general solution，the consolidation for GESC composite ground with ramp loading and trapezoidal additional stresses in depth is carried out，and compared with the existed solution by degenerated to ordinary stone column composite foundation. The comparisons show that the consolidation velocity obtained from this paper is slower than that of the previous solution since the presented method includes the complete volumetric strains of the column and the surrounding soil.
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Received: 25 June 2010
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2011, Vol. 30 
