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依据某工程三根混凝土预制静压桩的单桩竖向抗压静载试验及桩身轴力的测试,通过对其静载试验Q～s曲线的特性、桩身轴力传递机理、桩侧阻力和桩端阻力发挥性状的分析,结合高应变动力试验结果及静压桩成桩工艺的分析,揭示了该场地预制静压桩的承载性状和破坏机理模式,并和利用地质资料估算的承载力进行了比较,指出了地质资料估算承载力误差的原因,对预制静压桩的设计、检测和深入研究具有一定的意义。
According to the test of vertical compressive static load and axial load of single pile of three precast concrete prestressed piles of an engineering project, the characteristics of Q s curve of static load test, the transmission mechanism of pile axial force, Based on the analysis of high-strain dynamic test results and pile-forming process of static pressure pile, the bearing behavior and failure mechanism of pre-stressed pile under static pressure are revealed. And the bearing capacity estimated by using geological data The reasons for the error of bearing capacity of geological data are pointed out, which is of great significance to the design, testing and further research of precast static pile.