旋喷桩复合地基加固技术应用研究

Application research of composite foundation reinforcement technology of rotary jet pile

计算确定了旋喷桩复合地基布设参数及承载力,基于现场检测与试验确定了桩身强度及承载力,并对比了地基处理前后桩周土体的沉降变形量。结果表明,采用旋喷桩复合地基技术可提高地基承载力和变形模量,满足桩周地基沉降的要求,保障桥梁结构安全。

In this paper, the layout parameters and bearing capacity of rotary jet pile composite foundation were calculated and determined. The pile strength and bearing capacity were determined based on the field test and test, and the settlement deformation of soil around the pile before and after foundation treatment was compared. The result shows that the application of rotary jet pile composite foundation technology can improve the bearing capacity and deformation modulus of the foundation, and meet the requirements of foundation settl ement around the pile, and guarantee the safety of bridge structure.