This paper presents the analytical solutions for the responses of tunnels excavated in rock
masses exhibiting strain-softening behavior. Since previous analyses give little …

This study aims to investigate the tensile failure behaviours and corresponding fracture
mechanisms of basalt fiber reinforced lightweight-aggregate concrete (BFLAC) at various …

During the excavation of a tunnel the accumulated wall displacement and the loading of
tunnel support is the result of both the tunnel advance (round length and cycle time) and the …

The dilation angle is the most commonly used parameter to study nonlinear post-peak
dilatancy (PPD) behavior and simulate surrounding rock deformation; however, simplified or …

In this study, a three-dimensional mesoscopic numerical model considering concrete
heterogeneity and explicit modelling of basalt fibers was established to simulate the static …

A unified strain-hardening and strain-softening (UHS) elastoplastic constitutive model is
developed to capture the nonlinearity of intact rocks. Three new developments are …

The deformation capacity of tunnel will be overestimated by small strain theory especially in
high geostress and heavily squeezing rocks, the calculated wall convergence of tunnel may …

We investigated the stress–strain response of three different intact granitic rocks. To do this,
a press with servo-controlled loading was modified to control the confining pressure in …

The excavation impact (eg due to blasting, TBM drilling, etc.) induces an excavation
damaged or disturbed zone around a tunnel. In this regard, in drill and blast method, the …

We describe techniques to estimate plastic radii and longitudinal deformation profiles of
tunnels excavated in rock masses. The longitudinal deformation profile, a graph that relates …