抄録
Inner concrete lining and inner reinforcement lining are typical reinforcement methods for deformed tunnels. The effectiveness of inner reinforcement lining against the load type which generates compressive forces on the tunnel lining and reaches compressive collapse or shear collapse has not been clarified. In this study full-scaled loading tests and analyses considering the development of cracks for steel-plate and liner-plate as inner reinforcement lining were carried out. The following conclusion were obtained. 1) The maximum loading capacity of liner-plate reinforcement depends on the existing lining concrete strength. Liner-plate does not have much effect on the reinforcement. 2) Steel-plate become one with the existing tunnel lining and has much effect on the restriction of deformation. Exfoliation, however, was occurred between the steel plate and the exiting lining at almost the same maximum load as no reinforcement.
