| Popis: |
Vertical drains are widely used to expediate the consolidation of clay soil. During the installation of the drains, the clay is disturbed due to penetration of mandrel, which negatively affects much the rate of consolidation. Therefore it is very important to understand the installation procedure and its effect to reasonably assess the performance of vertical drains. In this article, the elliptical cavity expansion theory is developed in an attempt to simulate the installation of rectangular mandrel. As the suggested elliptical cavity expansion theory is analyzed in numerical modelling framework, it can easily be used with any constitutive model required, which is not the case of the analytical solution framework. The developed elliptical cavity expansion theory was utilized with the Modified Cam-Clay model, and the installation procedure of vertical drain was successfully simulated. |
