Method to predict consolidation settlement of ground treated by vertical drainage combining vacuum pump based on two-dimension problem

Abstract

Based on accepting that the ground settlement consists of two components due to volume and shape deformation, excess pore water pressure depends on isotropic stress, a method to predict consolidation settlement due to suction pump is proposed. Here, the isotropic compressive stress due to the vacuum pump is evaluated by the equivalent effective stress. The basis, calculation sequence, applied calculation results and comparative analysis with monitoring data show that this method can be used in practice and has the necessary reliability. The proposed calculation method is applicable and contributes to supplementing the calculation method in design of soft ground treatment.

Keywords: Consolidation settlement; vertical drainage; vacuum pump.