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http://dx.doi.org/10.11112/jksmi.2012.16.4.099

An Estimation of the Temperature-dependent Thermal Conductivity for Hybrid-fiber Reinforced Shield Tunnel Lining  

Lee, Chang Soo (서울시립대학교 토목공학과)
Kim, Yong Hyok (서울시립대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.4, 2012 , pp. 99-106 More about this Journal
Abstract
This study presents estimation method of temperature-dependent thermal conductivity by using solution of inverse heat conduction problem. Time and depth temperature distribution data from full-scale fire test were used for estimating temperature-dependent thermal conductivity on hybrid-fiber reinforced shield tunnel lining. At short heating time, estimated thermal conductivity sharply decreased within $100^{\circ}C$. On the other hand, it reflected thermal properties of concrete and effect of steel fiber at heating time of measured maximum heating temperature. Thus arbitrary time should be determined to estimate temperature-dependent thermal conductivity in time zone of measured maximum heating temperature. Estimated temperature-dependent thermal conductivity is similar to results of other study.
Keywords
Hybrid-fiber reinforced shield tunnel lining; Inverse heat conduction problem; Temperature-dependent thermal conductivity;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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