BEHAVIOR OF SEGMENTAL TUNNEL LININGS UNDER THE IMPACT OF EARTHQUAKES: A CASE STUDY FROM THE TUNNEL OF HANOI METRO SYSTEM

Abstract

The current metro systems have become an important part of the public transport system in
major cities around the world. With the development of construction technology as well as technical
requirements, the segmental tunnel lining has become the main lining used protective for tunnels. The main
effect of segmental tunnel lining when it is used for tunnels that is ability strengthened stability of tunnels
under the impact of earthquakes. This paper presents methods for calculating to effects of earthquakes on
tunnels lining in two cases: tunnel continuous lining and segmental tunnel lining by identifying internal forces
present on tunnels lining and the deformation of tunnels lining. Based on results obtained, analysis the effect
of the joints for segmental tunnel lining under seismic loads and the effect of the rotation stiffness of joints to
the segmental tunnel lining when have got the impact of earthquakes to the tunnel. This paper used parameters
of the tunnel in Hanoi metro system as a case study.