Fundamental Study on Static Deformation Behavior of Tunnel Lining

Evaluation of spalling of concrete pieces from tunnel lining employing joint shear model

“…Some studies have investigated the anomalies of tunnel linings caused by outer force, such as squeezing earth pressure, uneven earth pressure, loosening earth pressure, etc. For example, Asakura et al (1994) carried out loading tests with 1/30 scaled lining models and arranged the relationship between the loading patterns and the configurations of the cracks observed in the tunnel lining. He et al (2009) investigated the failure mechanism of deformed tunnels.…”

Non-linear Stiffness Behavior and Analysis of Tunnel Lining with Reinforcing Bars

“…To this end, we made RC lining models assuming a double-track tunnel with concrete having two layered reinforcing bar (referred to below as rebar) and plain concrete lining models, and performed tests using a tunnel lining loading test unit [2][3][4] . The results confirmed that RC lining achieves a satisfactory and stabilized structure by appropriate stress redistribution, although cracks in the lining impair the durability of the overall structural system.…”