Research on the One-Dimensional Rheological Consolidation Theory That Considers Secondary Consolidation Effect

摘要

As reclamation project is widely applied in Tianjin Binhai New Area, it is very significant to research the consolidation and creep properties of soft soil foundation. One-dimensional Secondary consolidation experiment on the soft soil with vacuum preloading treatment in Tianjin Marine Economic Area was carried out. Based on Terzaghi consolidation theory, secondary consolidation coefficient and modified Singh-Mitchell empirical creep model were used to establish and new one-dimension rheological consolidation equations. The calculation results about different stress levels and different depth of specimens are very close to the experiment results. Compaing the results of the two equations, it indicates that this new one-dimension rheological consolidation equation improved by Singh-Mitchell empirical creep model can reflect the stress-strain-time relationship of soft soil, and it is applicable for the soft soil foundation in Tianjin Binhai New Area.