In general, the accurate analysis method of stress-strain behaviour of tunnel is not developed yet because of the following difficulties in (1) the estimation of loading conditions around tunnel, (2) the determination of ground-support system interact...
In general, the accurate analysis method of stress-strain behaviour of tunnel is not developed yet because of the following difficulties in (1) the estimation of loading conditions around tunnel, (2) the determination of ground-support system interaction. and (3) the selection of relative ground material properties.
In NATM, these problem can be complemented by design modification during tunnel excavation.
In this study, two FORTRAN programs based upon ground response curve are developed for the estimation of the tunnel crown deformation.
And the results are compared with FLAC analysis results.
As a results of the study, the ground response curve analysis method using FORTRAN programs are recommended for the simple circular tunnel in homogeneous ground.