吹填土地基双面真空预压施工工艺与加固效果研究

Construction Technology and Improvement Effect of Double-Vacuum Preloading for Compaction Treatment of Hydraulically-Filled Ground

双面真空预压是在常规单面真空预压基础上,在地基深层增设一个真空面,预压时双层真空同时作用,适用于吹填土地基的加固处理。文章结合现场试验,通过分析对比监测数据,完成了双面真空预压施工工艺总结、双面预压与单面预压加固效果的对比以及双面预压的加固机理分析等工作,得出双面预压各项指标均优于单面预压的结论。

The double-vacuum preloading method adds a vacuum underground based on normal vacuum preloading, and the two vacuum work at the same time when compacting soft soil. So it is effective to improve the dredge-fill foundation. By filed monitoring and experimental data analysis, this paper completes the con- struction technology summary, comparison of the reinforcement effect between the two methods and mechanism analysis and so on, concluding that the effect of double-vacuum preloading is better than normal single-vacu- um preloading in every respect.