The Effects of Different Surcharge Pressures on 3-D Consolidation of Soil

摘要

The aim of the study is to predict precisely consolidation characteristics and their effects based on 3-D consolidation of soil under different surcharge pressures. In this study a 3-D consolidation apparatus is developed and performed a series of 3-D consolidation test under different surcharge pressures. During the 3-D consolidation test, vertical and lateral strains of the soil and vertical and lateral movements of pore water are allowed. In this study, two different types of soil are used to perform the 3-D consolidation tests under different surcharge pressures. It is observed that the 3-D consolidation settlement of a same soil changed with the change of surcharge pressure. With the increase of surcharge pressure, lateral strain of soil reduces during the consolidation process and due to this, compression index and coefficient of consolidation also reduced. By using developed apparatus, 3-D consolidation characteristics of soil can be evaluated under different surcharge pressures. As this apparatus allows vertical and lateral strain with vertical and lateral pore water movement under different surcharge pressures, it is possible to correlate with in-situ field conditions during the consolidation process.