Analytical study of the verification of the performance improvement of the strengthening systems for the open cut tunnel

개착식터널의 내진성능보강 효과분석에 대한 해석적 연구

Recently the design specification has been advanced with preventing earthquake disaster in Korea because of increasing occurrence of large size earthquake. A composite plate with ductile fiber is proposed, which can enhance the performance of built tunnel in both strength and ductility. This study is to focus to verify the effect of strengthening of existing tunnels which is built without earthquake type load scenario, so that it can provide the safety of existing urban subway system against earthquakes.