基于静载荷试验的后压浆钻孔灌注桩承载性能研究

Study on Bearing Capacity of Post-Grouting Bored Pile Based on Static Load Test

后压浆技术的实施能够提高钻孔灌注桩承载能力,降低桩身位移。本文以实际工程为研究背景,采用静载荷试验作为研究方法,对后压浆钻孔灌注桩承载性能进行了深入分析。研究结果表明:通过采用静载荷试验对实际工程中单桩承载能力进行测试,发现后压浆技术能够显著降低荷载作用下的桩身位移,提升桩身在弹性阶段的承载力;此外,使用后压浆技术能够通过降低桩身轴力传递速度和增加桩端阻力来提高桩身整体承载力。本文研究结果为后压浆技术的应用提供了一定的理论支持和实践意义。

The implementation of post grouting technology can improve the bearing capacity of bored pile and reduce the displacement of piles.In this paper,based on the actual project as the research background,using the static load test as the research method,the bearing capacity of the post grouting bored pile is analyzed in depth.The results show that the static load test is used to test the bearing capacity of single pile in practical engineering,and it is found that the post grouting technology can significantly reduce the displacement of pile body under load and improve the bearing capacity of pile body in elastic stage,and in addition,the use of post-grouting technology can improve the overall bearing capacity of the pile by reducing the axial force transmission speed of the pile and increasing the pile end resistance.The research results of this paper provide some theoretical support and practical significance for the application of post grouting technology.