Study comparison of ground subsidence due to preloading installation of egg tray triangular vertical drains with distance variations on a small laboratory scale

Abstract

Abstract The approach to infrastructure development is conducted on soft clay soil, which introduces the threat of consolidation-induced subsidence. The construction soil must possess adequate bearing capacity and shear strength to withstand the loads imposed on it throughout the construction process. Soil with low shear strength necessitates reinforcement to enhance its bearing capacity. This study aims to investigate the effects of preloading on the settlement behavior of soft soil. Applying clay-filled test containers, the laboratory implements the method through a small-scale model approach. As preloading, an embankment load is applied to the soil. The supplementary weight was incrementally increased by 1 kg, 2 kg, 4 kg, 8 kg, and 16 kg for five days. The sample experiments that were conducted were EgVD-0, EgVD S-17, and EgVd S-29. Consolidation was observed in the outcomes of the EgVD S-17 and EgVD s-29 investigations, surpassing EgVD-0 by 53.69% and 57.19%, respectively. EgVD S-17 of 3.56 cm and EgVD S-29 of 3.92 cm were present along with an EgVD-0 decrease of 1.65 cm.