科研之友
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摘要
The load on the soil is transferred to piles, and the total stresses of pile and soil changed when the equal-strain composite ground under embankment is consolidated. The change of excess pore water pressure isn't equal to the change of effective stress of composite ground under includincy embankment. The influential factors of consolidation of equal-strain composite ground with piles, including total stress of soil or pile, compressibility and excess pore water pressure of vertical drain, permeability of pile and relative position of vertical drain and pile, are analyzed. The results of analytical solutions considering pore water pressure, degree of consolidation, stress ratio between pile and soil by which permeability of piles, transfer of load between piles and soil, compression and well resistance of vertical drains, is carried out. It shows that impermeable piles can increase the consolidation of ground but permeable piles maybe delay the consolidation; the consolidation of composite ground is highly influenced by the coefficient of consolidation of pile; the degree of consolidation of composite ground treated by piles with high coefficient of consolidation is larger than that with low coefficient of consolidation.
- 出版日期2009-5
- 单位华南理工大学
