Journal of
Faculty of Civil Engineering

CONFERENCE PROCEEDINGS INTERNATIONAL CONFERENCE
"CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2015 "
FACULTY OF CIVIL ENGINEERING SUBOTICA , 2015.y., pp. 393-401

	DOI: 10.14415/konferencijaGFS 2015.049
	UDC: 624.19:624.042.7
	CC-BY-SA 4.0 license
	Author : Lukić, Dragan; Petronijević, Predrag; Zlatanović, Elefterija
	Summary:
	The paper describes a 3D numerical model of structural response of a circular tunnel tube in a medium (soil/rock) in case of a seismic action in the direction of the longitudinal axis of the tunnel. The model simulates interaction of the structure and rock mass in seismic conditions. The analysis includes nonlinear effects of interaction of the tunnel structure – rock mass system. For illustration of a seismic behavior of the applied model, two cases were analyzed, using variation of four different seismograms. The first case presents a tunnel where unrestrained displacement of portal points in the direction of the tunnel axis is facilitated. In the second case, the model simulates a very long tunnel whose portal points are joined with elastic supports.
	Keywords:
	numerical model, dynamic response, tunnel structure, analysis in longitudinal direction