基于堤防工程地基加固高压旋喷桩优选施工参数研究

Research on Construction Parameters of High-Pressure Rotary Jet Pile Based on Foundation Reinforcement of Embankment Engineering

在南方某堤防工程中采用高压旋喷桩施工对软土地基进行加固处理,通过分析软土地基工程特性和高压旋喷桩施工原理,设置三种工况参数进行试验桩施工,对比试验桩的实际桩长、桩径、垂直度、复合地基承载力等参数,将喷浆压力25MPa、提升速度0.15m/min、水灰比0.8作为优选施工参数,对拟建场地工程桩进行指导施工,可提升高压旋喷桩工程桩整体质量和软土地基加固效果。

In a dike project in the south,high-pressure rotary pile construction was used to reinforce the soft ground foundation.By analyzing the engineering characteristics of soft soil foundation and the construction principle of high-pressure rotary jet pile,the parameters of three working conditions were set for test pile construction Comparing the actual pile length,pile diameter,verticality,composite foundation bearing capacity and other parameters of the test piles,the spraying pressure of 25MPa,lifting speed of 0.15m/min,and water-cement ratio of 0.8 were taken as the preferred construction parameters to guide the construction of the engineering piles of the proposed site,which can enhance the overall quality of the high-pressure rotary jet pile engineering piles and the effect of the soft soil foundation reinforcement.