In this paper, ground surface settlement induced by tunneling have been studied
using 2D finite element analysis. By assuming greenfield conditions, which means that
there is no loads on the soil surface above the tunnel.
A FE study was conducted
in which an elasto-plastic constitutive model was adopted
to model the soil behavior (MC,HS).
This paper include Comparison between actual field measurements with (FEM)
results, and parametric study for the most factors that influence ground surface settlement.
In this paper, the modeling methods of tunneling and the surface subsidence induced by
that have been studied by using two-dimensional numerical analysis according to the FEM
method, assuming the green field condition، which means that there is no
load on the soil
surface above the tunnel. A FE study was conducted in which an elasto-plastic constitutive
model was adopted to model the soil behavior (HS, HSsmall).
This article includes a comparison between the results of numerical analysis and field
measurements to executed projects، and a suggested method for modeling tunnel
excavation and surface subsidence induced by that.