FINITE ELEMENT ANALYSIS OF UNDERGROUND METRO TUNNELS

With buildings roads and railways occupying most spaces in cities, there is a constant increase in traffic congestion and pollution. An underground express-way/metro tunnel below such central business districts serves as an effective sustainable option. Along with longer service life, they can optimize the energy usage, minimize CO 2 emissions, reduce carbon footprint and thus co- exist as an integral part of a sustainable infrastructure system. In this paper, we address the challenge of analyzing one such Underground metro tunnel in Bangalore. The paper high lights the elastic and elasto-plastic analysis of the twin tunnel system subjected to gravity, hydrostatic pressure condition s combined with blast induced pressures.