双向搅拌粉喷桩在地下综合管廊地基处理中的应用

Application of Two-way Mixing Powder Jetting Pile in Foundation Treatment of Underground Integrated Pipe Gallery

以连云港徐圩新区地下综合管廊一期工程为例,介绍了双向搅拌粉喷桩在海相软土地基处理中的应用,该工程位于典型的海相软土场地,地基承载力不能满足工程需要。通过现场变形监测,结果显示管廊结构施工过程中及施工完成后的地基沉降均在控制范围内,采用双向搅拌粉喷桩处理软土地基的效果显著,可供类似工程参考。

Taking the first-stage underground comprehensive pipe gallery project of Xujing New District in Lianyungang as an example,the application of two-way mixing powder jetting pile in the treatment of marine soft soil foundation is introduced.The project is located in a typical marine soft soil site,bearing capacity of foundation.Can not meet the needs of the project.Through the on-site deformation monitoring,the results show that the foundation settlement during the construction process of the pipe gallery structure and after the completion of the construction is within the control range.The effect of using the two-way mixing powder spray pile to treat the soft soil foundation is significant,which can be used for similar engineering reference.