真空预压联合强夯法处理吹填场区软土研究

Study on soft soil treatment by vacuum preloading combined with dynamic compaction in filling field

以实际工程试验区为依托,从地基的变形和承载力两方面出发,采用真空预压+强夯相结合的手段对软土地基进行处理。上部吹填砂经强夯加固处理后形成人工硬壳层,人工硬壳层可以满足工程地基承载力要求,另外,由于人工硬壳增大了附加应力的扩散路径,降低附加应力对软土的影响,在真空预压处理的基础上,进一步降低软土地基的工后沉降,为工程项目的后期使用提供保证。

In this paper, based on the actual engineering test area, from the deformation and bearing capacity of the foundation of two aspects, the use of vacuum preloading + dynamic compaction means of soft soil treatment. Upper reclaimed sand human scale to form after dynamic compaction reinforcement layer, artificial shell layer can meet the engineering requirements of subgrade bearing capacity, in addition, because human scale enlarges the diffusion path of the additional stress, reduce the effects of additional stress on the soft soil in vacuum preloading treatment, on the basis of further reducing the post-construction settlement of soft soil foundation and guarantee for the later use of the project is to improve.