Abstract
In this paper, the engineering characteristics of the soft soil in Guan-Yun section of Lian-Yan railway were evaluated based on the CPTU test. The soil layer and classification of soil were performed by using the multi-functional CPTU test. On the basis of results of the CPTU test, the in-situ state parameters including the over consolidation ratio and the undrained shear strength were provided. Simultaneously, the consolidation and permeability characteristics were studied. The results showed that the silt and mucky soil was slightly overconsolidated and the clay was overconsolidated. Moreover, the coefficient of permeability was small and the rate of settlement consolidation was slow. The results revealed that the site engineering conditions were evaluated more accurately by the multi-function CPTU test technology.
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