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饱和软粘土地基沉桩过程中桩土挤压所引起的桩周土体超孔隙水压力效应是非常显著的 .本文从弹塑性理论出发推导出沉桩过程中桩周土体挤压应力及超孔隙水压力的计算公式 ,给出了考虑挤压应力和超孔隙水压力等影响因素的合理打桩间距的确定方法
The effect of excess pore water pressure on piles surrounding soil caused by pile-soil compaction during pile driving in saturated soft clay foundation is very significant.In this paper, the compressive stress of soils around the pile during pile driving is deduced from elasto-plastic theory The calculation formula of pore water pressure gives the method of determining the reasonable pile spacing considering the factors of squeezing stress and excess pore water pressure