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http://dx.doi.org/10.9711/KTAJ.2018.20.2.347

Seismic response characteristics according to the supporting conditions of middle slab of double-deck undersea tunnel using the centrifuge testing  

Um, Ki-Yoon (Dept. of Civil Engineering, Hanseo University)
Park, Inn-Joon (Dept. of Civil Engineering, Hanseo University)
Kwak, Chang-Won (Korea District Heating Engineering Co., Ltd.)
Jang, Dong-In (Dept. of Civil Engineering, Hanseo University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.20, no.2, 2018 , pp. 347-360 More about this Journal
Abstract
Due to the concentration and congestion of traffic in Seoul metropolitan area, effective utilization of underground space is required, and construction of various underground structures such as a double deck tunnel is increasing. Double deck tunnels are divided into upper and lower runways, and the most important part is middle slab. To investigate seismic behavior of middle slab, experimental study is required because of the complexity of the load and the mechanism of earthquake. In this study, centrifugal model tests were conducted to investigate the response characteristics of earthquake response according to the support conditions of the middle slab of a double deck tunnel. Artificial, Ofunato (short period) and Hachinohe (long period) seismic waves were employed in the experimental study. As a result, it was confirmed that the acceleration attenuation of elastomeric bearings condition was 10.6% in artificial earthquake, 13.6% in Ofunato earthquake, and 10.3% in Hachinohe earthquake. The results indicate that elastomeric bearings have some advantages in the viewpoint of seismic behaviors.
Keywords
Double deck tunnel; Middle slab; Elastomeric bearings; Centrifugal model test;
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Times Cited By KSCI : 2  (Citation Analysis)
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