基于ANSYS的压密注浆桩半径与注浆压力关系的研究

采用ANSYS数值模拟软件和Drucker-Prager屈服准则,进行合理的假设并建立压密注浆桩在土体中的压密模型;在工程中常用的压力范围内,通过改变注浆压力的大小,模拟注浆压力对压密注浆桩半径的影响,研究压密半径随注浆压力的变化规律,并采用曲线拟合得到压密半径与注浆压力的关系式。结合现场压密注浆桩试验,得到与数值模拟基本一致的结论,所得的成果可为现场施工提供理论参考。

Study on relationship between radius of compaction grouting pile and grouting pressure based on ANSYS

The paper used ANSYS numerical simulation software and Drucker-Prager yield criterion and carried out reasonable assumption so as to establish compaction model of compaction grouting pile in the soil; it studied the influence of grouting pressure on compaction grouting pile radius through changing the grouting pressure within the common scope of the pressure used in engineering,and obtained the relation between the compaction radius with grouting pressure by means of curve fitting.Combining the field test of compaction grouting pile, the paper got the conclusion which is basically consistent with the numerical simulation.The results can provide a reference for site construction.