粉土中预应力管桩的承载力时效性试验研究

通过系列载荷试验，该文研究了粉土中预应力管桩的单桩极限承载力的变化规律及时间效应，采用现场标准贯入试验，分析了粉土中预应力管桩的土塞特性、不同沉桩方式对桩周土力学性能的影响，得到了一些有益的结论。

Study on Effective Test of Bearing Capacity of Pre-stressed Pipe Pile in Silt

Through a series of load test,the article studies the changing law and the time effect of the ultimate bearing capacity of single pre-stressed pipe pile in the silt.The article uses the filed standard penetration test to analyze the soil blocking characteristic of pre-stressed pipe pile in silt and the influences of the different pile sinking methods on the mechanics performance of soil around the pipe pile.Some useful conclusions are obtained.