粉质粘土中的桩承载性能分析

Pile loading capacity of silt clay

应用桩静载荷试验和数学分析的方法,对粉质粘土层中的桩的承载性能进行分析研究。结果显示,粉质粘土层中的桩的侧摩阻力标准值为37.6kPa,桩的端阻力标准值可达3.34M Pa,位于粉质粘土层中的桩端阻力占桩承载力的50%±,桩为端承摩擦桩,而非纯摩擦桩,且桩的承载力较高,沉降变形小,可以满足一般建筑物的荷载需求,设计时应充分挖掘该土层的潜力。

Research on loading capability of the pile in silt clay was performed by use of pile static load test and mathematic analysis method. The result shows that standard value of side friction resistance of the pile in silt clay is 37. 6kPa, while the standard value of pile end resistance can reach 3. 34MPa. The pile end resistance in silt clay layer takes 50%± of pile loading capability, here the pile is end load friction pile, instead of pure friction pile and the loading capability is higher with limited distortion upon sedimentation, hence it can satisfy the loading requirement for common buildings. The potential of this clay layer should be fully considered while designing.