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http://dx.doi.org/10.9711/KTAJ.2012.14.2.141

A study on cross sectional characteristics and available area for using the lower space in TBM road tunnels  

Kim, Hyun-Soo ((주)평화엔지니어링 지반공학부)
Kim, Hong-Moon ((주)평화엔지니어링 지반공학부)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.14, no.2, 2012 , pp. 141-157 More about this Journal
Abstract
For the application TBM tunneling method, Both tunnel design standard and case study designed & constructed in domestic and foreign have been conducted. According to the study, the number of lane and inner shape (single or duplex) vary depending on the volume of traffic. Also extra space located in the top and bottom of tunnel is used for a multipurpose such as ventilation, disaster prevention, maintenance and administration. To find area ratio according to the components of road TBM tunnel, a standard section was considered as a two-lane road. Then, the analysis of area ratio of this section which consists of components for clearance, extra space in upper and lower tunnel was carried on two widths of shoulder. In addition, after a structural analysis, a thickness requirement of lower slab which is essential for road tunnel was derived on a few supporting types. Through correlation analysis, the ranges of available cross-sectional area between slab thickness and lower extra space of the tunnel was presented.
Keywords
TBM; road tunnel; tunnel cross section; available cross-sectional area;
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