饱和软土中打入式预制桩单桩承载力时效性探讨

Bearing Capacity’s Time Effectiveness of Single Prefabricated Pile Hammered into Saturated Soft Soil

依据实测静载荷试验资料,对杭州地区饱和软黏土层打入式预制桩的休止时间对单桩极限承载力的影响进行了分析,对预制桩静载荷试验的间歇时间进行了探讨。实测资料表明,在特定的地质条件下,打入式预制桩沉桩4个星期后单桩极限承载力仍会有较大幅度的增长。

An analysis was made of the impact of repose time of prefabricated pile hammered into the saturated soft clay in Hangzhou area on the bearing capacity of the pile, based on dead load test data. Studies were also conducted on the intervals of the dead load test. Measured data shows that four weeks after the piles were hammered into the soil, the bearing capacity of single pile still increases substantially under some geographical conditions.