中文摘要：

基于比奥固结理论和ADINA有限元程序，分析了打桩完成后土中超孔隙水压力的消散和桩周土随时间固结沉降情况；然后结合荷载传递函数法，编制计算程序，对某一具体工程桩周土体重固结引起的在挤土桩上产生的负摩擦力及其时效性进行了研究。结果表明：沉桩引起的超孔隙水压力在3个月内基本上完全消散，桩周土重固结沉降在挤土桩上产生负摩擦力；在沉桩完成100d后负摩擦力占桩基设计值的23．8％；所得结论为该工程桩基间歇期的确定提供了参考。

英文摘要：

A finite element procedure ADINA coupled with the Blot＇s consolidation theory was worked out to calculate the dissipation of the excess pore pressure and the settlement of soil around the displacement pile after driving the pile. Another procedure was compiled based on the load transfer function method to calculate the negative friction on the displacement pile which was induced by the soil reconsolidation around the pile. The results indicate that the dissipation of the excess pore pressure approximately finishes in three months after driving piles. The negative friction accounts for23.8% of pile foundation design value under driving piles after 100 d. The conclusion provides reference for determining of pile foundation diapause.