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http://dx.doi.org/10.9711/KTAJ.2017.19.5.749

A study on the occurrence of cracks in the tunnel pavement in the soil under use  

Kim, Nag-Young (Korea Expressway Corporation)
Lee, Kang-Hyun (Korea Expressway Corporation)
Cho, Nam-Hun (Korea Expressway Corporation)
You, Kwang-Ho (Dept. of Civil and Environment Engineering, Suwon University)
Baek, Seung-Chol (Dept. of Civil and Environment Engineering, Andong National University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.19, no.5, 2017 , pp. 749-760 More about this Journal
Abstract
Recently, the proportion of tunnel structures in roads and railways has increased rapidly. Along with this trend, the rate of occurrence of cracks and dropouts in concrete lining of tunnel structures is increasing. Generally, maintenance of such concrete lining is normalized and managed as the core of maintenance work in tunnel maintenance. However, the maintenance of the tunnel pavement is important in securing driver in the tunnel. In the design of tunnels, the underground condition of the tunnel is designed to be in good rock condition, so there have not been many cases of cracks in the tunnel pavement in the past. Recently, the construction of tunnel structures has been rapidly increased, and the length of the tunnels has become longer.Tunnel pavement installed in these ground conditions is increasing the occurrence of cracks in the pavement due to decrease of bearing capacity of the pavement after a long time. In this study, FWD and GPR were conducted to analyze the types of cracks and the reduction of bearing capacity in the tunnel.
Keywords
Tunnel pavement; Falling weight deflectormeter; Ground penetrating radar; Pavement crack;
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  • Reference
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