Numerička analiza izgradnje plitkog tunela u beogradskim glinovito-laporovitim sredinama

Abstract

The rapid urban development, in recent decades, has led to increasing demands for construction and expansion of the underground transport network in large overpopulated cities. An important task in the design of tunnels in urban areas is to adequately predict the ground surface subsidence. This paper presents the methods for 3D and 2D finite element modelling of tunnel construction. Also, the paper presents some results of analysis of the ground surface subsidence due to tunnelling in Belgrade marly clay. This is a current problem given that the start of the Belgrade metro construction is planned in the near future.

Ubrzani urbani razvoj, poslednjih decenija, doveo je do sve većih zahteva za izgradnjom i proširenjem mreže podzemnog transporta u velikim prenaseljenim gradovima. Važan zadatak pri projektovanju tunela u urbanim područjima je da se adekvatno predvide sleganja površine terena. U radu je prikazan postupak 3D i 2D modeliranja izgradnje tunela primenom metode konačnih elemenata. Prikazani su neki rezultati proračuna sleganja površine terena usled izgradnje plitkog tunela u beogradskim glinovito-laporovitim sredinama. Ovaj problem je aktuelan s obzirom da se planira početak izgradnje metroa u Beogradu u skoroj budućnosti.