Settlement and bearing capacity of soil basis near vertical excavation

Abstract

In the present paper, there was provided development of the method determining the statement and analytical solution of a problem which evaluates stress statement, settlement and load-bearing capacity of the weighty soil layer of limited thickness that is rested upon an incompressible soil basis and the excavation pit wall on exposure to a foundation with the distributed load in the vicinity of a wall. The analytical solution for determining the stress state component in an engineering problem is based on the Ribere-Fileon trigonometric series. Analytical solutions for determining the settlements of the soil bases based on nonlinear dependencies, taking into account the nonlinear elastic-plastic deformation properties of soils, as well as nonlinear rheological properties, are presented The obtained solutions enable to assess the deformation of soil basis and load-bearing capacity with respect to non-linear properties that accurately corresponds to the actual behaviour of soil basis under the loading. The results of stress statement were verified by numerical modelling in PC PLAXIS 2D to prove their validity and accuracy.

Keywords

• soil basis
• retaining wall
• elastoplastic properties of soils
• viscosity of soil
• long-term bearing capacity