饱和软土中预制桩承载力时效的研究

为研究饱和软土中预制打入单桩承载性能的时间效应,结合天津大港电厂二期工程的静力试桩,对混凝土预制桩和钢管模型桩分别进行了沉桩不同休止时间、不同加荷程序的静载试验,并对桩身荷载传递进行了测试。通过试验结果分析,对饱和软土中预制打入单桩的时效特性提出了一些见解,并对如何考虑时效特性来确定单桩承载力的方法提出了建议。

Time Effect of Bearing Capacity of Driven Pile in Saturated Soft Soil

In order to study the time effect on the bearing capacity of single driven pile, experiment of pile foundation in Da Gang power plant was conducted. Experiments of models with different scales of steel tube piles and concrete piles have been carried out with various time, various loading program. Based on the results of the experiments views on the behaviors of time effect of single pile in saturated soft soil and sugestions for determining the bearing capacity of pile with consideration of time effect are presented.