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http://dx.doi.org/10.14481/jkges.2017.18.5.55

The Characteristic of Earthquake Response on Middle Slab in Double-Deck Tunnel under Supporting Conditions  

Jang, Dongin (Hanseo University Department of Civil Engineering)
Kim, Jongill (Hanseo University Department of Civil Engineering)
Kwak, Changwon (Hanseo University Department of Civil Engineering)
Park, Innjoon (Hanseo University Department of Civil Engineering)
Publication Information
Journal of the Korean GEO-environmental Society / v.18, no.5, 2017 , pp. 55-60 More about this Journal
Abstract
It is critical for Korea to make effective use of limited space as it has dense population and high traffic volume compared to its terrestrial area. To resolve this issue, diverse types of underground structures have increasingly been applied so far, and one of the most representative structures is double-deck tunnel. It has upper and lower roads separated by middle slab that shows dynamic behavior according to the vehicle and earthquake loads. In case of the characteristics of earthquake response, it is necessary to have exploratory study as it has high loads, complex working mechanism, and difficult theoretical approach. In order to understand the characteristics of earthquake response based on the supporting conditions of middle slab in double-deck tunnel, this study conducts indoor shaking table test with 3 test cases: (1) fix both brackets, (2) free and fix at each bracket and (3) free at both brackets for 2 seismic waves of artificial and Gyeongju earthquake. The result shows if the middle slab is free at both brackets, the acceleration response is reduced 41% for artificial earthquake and 60% for Gyeongju earthquake compared to the one with fix at both brackets.
Keywords
Double-deck tunnel; Middle slab; Shaking table test; Artificial earthquake; Gyeongju earthquake;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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