旋喷桩在深厚填土（含卵石）地基中的应用研究

Application of Jet Grouting Pile in Deep Filled Soil(Including Pebble) Foundation

针对某深厚含卵石填土地基中灌注桩施工过程中存在严重的塌孔、缩径现象,采用高压旋喷桩进行地基加固。阐述了旋喷桩加固原理及特色,进行了旋喷桩方案的设计。旋喷桩加固地基后,灌注桩施工效率和效果大幅提高,达到了预期处理效果。为其他类似地质条件的项目提供一定的参考。

In view of the serious phenomenon of hole collapsing and diameter shrinking in the construction process of filling pile in a deep cobble filled soil foundation,jet grouting pile is adopted to reinforce the foundation.The strengthening principle and characteristic of jet grouting pile are expounded,and the scheme of jet grouting pile is designed.After the foundation is strengthened by the jet grouting pile,the construction efficiency and effect of the filling pile are greatly improved,and the expected treatment effect is achieved.Provide some reference for the other project with similar geological conditions.