This paper presents a series of laboratory tests on cemented soil with high water content, and the water content of cemented soil samples were all larger than the liquid limit. A group of model PHC pile-cemented soil interface shear tests were then conducted to investigate the interface frictional capacity. Finally, a group of full-scale tests on PHC pile-cemented soil columns were conducted to study the frictional capacity of cemented soil-soil interface. The test results show that: the cohesion of cemented soil with high water content had a linear relationship with the unconfined compressive strength; the cemented soil strength had a large effect on the frictional capacity of PHC pile-cemented soil interface, and the peak skin friction of PHC pile-cemented soil interface increased linearly with the increasing cemented soil strength; the frictional capacity of cemented soil-soil interface was better than the frictional capacity of conventional pile-soil interface.

本文介绍了一系列高含水量胶结土的室内试验，胶结土样品的含水量均大于液限。然后进行了一组模型 PHC 桩-胶结土界面剪切试验，以研究界面摩擦能力。最后，对PHC桩-胶结土柱进行了一组全尺寸试验，研究了胶结土-土界面的摩擦承载力。试验结果表明：高含水胶结土的黏聚力与无侧限抗压强度呈线性关系；胶结土强度对PHC桩-胶结土界面的摩擦承载力影响较大，PHC桩-胶结土界面摩擦峰值随胶结土强度的增加而线性增加；