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http://dx.doi.org/10.14481/jkges.2014.15.5.13

A Study on Earth Pressure Calculating Method about Shield TBM Tunnel Segments in the Rock  

Chun, Byungsik (Construction Industry Research Institute)
Ki, Jungsu (Korea Infrastructure Safety Corporation)
Kang, Taehee (Korea Electric Power Corporation)
Kwag, Yunehyeong (Department of Civil Engineering, Kyonggi University)
Byun, Yoseph (Korea Infrastructure Safety Corporation)
Publication Information
Journal of the Korean GEO-environmental Society / v.15, no.5, 2014 , pp. 13-21 More about this Journal
Abstract
This study analyzed the differences in the analysis techniques through a comparative analysis of the various segment's modeling techniques of Shield TBM method and proposed reasonable modeling techniques. Also, this study suggested reasonable estimating methods of load to be applicable in the field through the load analysis and three-dimensional finite element analysis by estimating model of rock mass relaxation load. Estimating method of relaxation area by rock mass rating makes no odds of output in subgrade with high rock mass rating, but so the difference of output is large, that is judged to set conservative design off. In estimating result of rock mass relaxation area by three-dimensional analysis relaxation area of subgrade with low-grade soil was predicted to be positioned at medium-range of many methods, in case of designing segment in subgrade with low-grade soil it needs to actively review estimation of relaxation area through three-dimensional analysis reflecting mechanical tunnel excavation.
Keywords
Shield TBM method; Segment; Relaxation area; Three-dimensional analysis;
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