The stress distribution at the center of an external uniformly distributed strip load on the riverbank subsoil foundation

Abstract

Mekong Delta has a soft soil stratum distributed near the surface and is often flooded. The accurate calculation of the stress distribution and deformation of soft soil for riverbank protection is one of the urgent issues today. This study focuses on analyzing the stress distribution in multi-layered riverbank soil due to external loads at depth using the Flamant method and the finite element method (Plaxis 2D). The results show that the vertical stress distribution at the center of the load due to the external load in the form of a strip distributed uniformly in the riverbank soil at depth has a hyperbolic form or a periodic function of the hyperbola; there is always a value at which the external stress approaches a constant value. The study also points out the difference in the stress distribution due to external loads at depth from two methods above; the results of the study contribute to the limitations of the analytical method as the ground is uneven and has many layers.

Keyswords: Externally induced stress; riverbank; Mekong delta; Flamant; finite element method.