模糊聚类在不均匀场地土分类归并中的应用

在含有砂性土、淤泥质粘土的吹填土场地建设大型储罐，采用高能级强夯置换进行地基处理。由于吹填土在块石强夯置换后，流塑状的淤泥质粘土被置换或被扰动，砂性土被振密或挤密。根据多种检测手段获得的墩间土指标，具有较大的离散性，墩间土土性分布在空间上极不均匀，难以对复合地基沉降变形作出预估分析。采用模糊聚类方法，对获得的所有测点土性指标和分布区域进行聚类归并后，得出按不同平面区域分布的场地土类别，在一定置信度上，保证了归并后的指标合理性，使储罐基础的沉降变形预估更符合实际情况。

Application of fuzzy cluster on soil classification in non-uniform ground

The soil improvement of high energy dynamic compaction displacement has been used to construct large storage tank in dredge soil ground, which contains sandy soil and muddy clay. The muddy clay in flow plastic is replaced by disturbed and sandy soil densified after the dredge soil is replaced by block stone. The index between stone columns obtained from detection and test in multi geotechnical ways, is very discreted. The results indicate that the distribution of soil properties is non uniform in space, and it is difficult to estimate the settlement for composite ground. The Fuzzy cluster method is employed in this paper. After the soil index obtained from geological detection and test, their distribution is classified in a Fuzzy cluster. The soil classification of ground soil is obtained in differently distributed plane areas. Index after classified is ensured to be reasonable to some credit degree, and the settlement estimation of tank foundation is also made to conform to realistic cases.