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http://dx.doi.org/10.9711/KTAJ.2017.19.5.717

Dynamic response of middle slab in double-deck tunnel due to vehicle load  

Kim, Hyo-Beom (VE-Tech Corporation)
Kwak, Chang-Won (Civil&Architecture Design Group, Korea District Heating Engineering Co. Ltd)
Park, Inn-Joon (Department of Civil Engineering, Hanseo University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.19, no.5, 2017 , pp. 717-732 More about this Journal
Abstract
Recently, the construction of underground structure such as a double-deck tunnel is increasing to manage rapid growth of roadway traffic volume. Double-deck tunnel includes middle slab to separate upper and lower road inside, and various sources affect the dynamic behaviour of middle slab due to dynamic loading of vehicle. Therefore, it is important to investigate the dynamic response of middle slab precisely to apply it to design and analysis of double-deck tunnel. In this study, dynamic analysis model of middle slab considering structural type, design velocity, vehicle load, and surface roughness, etc. is built. 3-dimensional dynamic analysis is performed to assess dynamic response of middle slab. Consequently, Dynamic Magnification Factor which represents dynamic response of middle slab shows maximum in case of elastomeric bearings (EB) and average roughness (Grade C). It is also expected that dynamic response can be reduced under the condition of good roughness (Grade B) and fixed bearings (FB).
Keywords
Double-deck tunnel; Middle slab; Vehicle load; Surface roughness; Dynamic Magnification Factor;
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