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http://dx.doi.org/10.14481/jkges.2022.23.12.33

Numerical Approach to Predict the Long Term Behavior of Tunnel Considering the Degradation of Tunnel Members  

Hoki, Ban (Dept. of Civil Engineering, Kangwon National University)
Donggyou, Kim (Dept. of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.23, no.12, 2022 , pp. 33-39 More about this Journal
Abstract
This paper presents the long-term behavior of tunnel considering the degradation of concrete lining and surrounding soil. Tunnel is a composite structure which has supporting elements (shotcrete, lining, and rockbolt) and surrounding soils. These supporting elements and surrounding soils undergo the degradation as time goes. A proposed degradation function which has two parameters which control the residual strength and degradation shape was applied to the numerical analysis. The results showed the plastic zone was spread around tunnel due to the degradation leading to the increase in unstability of tunnel.
Keywords
Nunerical analysis; Long-term behavior; Degradation function; Stability;
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