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旋喷桩加固软土地基的方法目前在各种地基处理工程中得到了越来越广泛的应用。对旋喷桩的研究多数集中在其施工工法的改进上,而在地基土参数对旋喷群桩的承载特性影响方面则研究不多。本文根据工程实际情况,采用基于MIDAS-GTS的三维有限元分析技术,通过改变旋喷群桩复合地基中桩土接触面系数以及地基土的弹性模量、内摩擦角和粘聚力等相关材料参数,对旋喷群桩复合地基随这些参数变化而表现出来的承载特性进行了研究。通过本文的研究,可为实际工程中进行旋喷桩复合地基处理提供参考。
Jet grouting pile reinforcement method of soft ground is currently in a variety of foundation treatment project has been more and more widely used. Most of the research on the jet grouting pile is focused on the improvement of the construction method. However, there is not much research on the influence of the parameters of the foundation soil on the bearing characteristics of the jet grouting pile. Based on the actual situation of the project, the 3D finite element analysis technology based on MIDAS-GTS is adopted. By changing the coefficient of contact surface between pile and soil and the elastic modulus, internal friction angle and cohesion of foundation soil, Parameters of the rotating jet grouting pile composite foundation with the changes of these parameters showed the bearing characteristics were studied. Through the study of this article, it can provide a reference for the treatment of composite foundation with jet grouting pile in practical engineering.